/* ========================================
   KragaAI - Retro Neon Theme v3
   ======================================== */

/* ---- CSS Variables ---- */
:root {
    --bg-deep: #07070e;
    --bg-primary: #0a0a14;
    --bg-secondary: #0e0e1a;
    --bg-tertiary: #131320;
    --bg-elevated: #161628;
    --bg-hover: rgba(0, 240, 255, 0.04);

    --neon-cyan: #00f0ff;
    --neon-cyan-dim: #00a8b3;
    --neon-magenta: #ff2d78;
    --neon-magenta-dim: #b3204f;
    --neon-purple: #b44dff;
    --neon-purple-dim: #7a35b0;
    --neon-yellow: #ffe156;
    --neon-green: #00e676;

    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --text-accent: var(--neon-cyan);

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.1);
    --border-neon: rgba(0, 240, 255, 0.2);

    --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.3), 0 0 40px rgba(0, 240, 255, 0.1);
    --glow-cyan-sm: 0 0 8px rgba(0, 240, 255, 0.25);
    --glow-magenta: 0 0 15px rgba(255, 45, 120, 0.3), 0 0 40px rgba(255, 45, 120, 0.1);
    --glow-purple: 0 0 15px rgba(180, 77, 255, 0.3);

    --sidebar-width: 280px;
    --topbar-height: 56px;
    --input-max-width: 780px;
    --message-max-width: 780px;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Orbitron', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ---- Themes ---- */
[data-theme="midnight-blue"] {
    --bg-deep: #030712;
    --bg-primary: #0b1120;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-elevated: #374151;
    --neon-cyan: #3b82f6;
    --neon-magenta: #ec4899;
    --neon-purple: #8b5cf6;
    --neon-yellow: #eab308;
    --neon-green: #10b981;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-subtle: rgba(148, 163, 184, 0.1);
    --border-default: rgba(148, 163, 184, 0.2);
    --border-neon: rgba(59, 130, 246, 0.3);
    --glow-cyan: 0 0 15px rgba(59, 130, 246, 0.3), 0 0 40px rgba(59, 130, 246, 0.1);
    --glow-cyan-sm: 0 0 8px rgba(59, 130, 246, 0.25);
}

[data-theme="emerald-dark"] {
    --bg-deep: #020805;
    --bg-primary: #06120e;
    --bg-secondary: #0a1f17;
    --bg-tertiary: #112e22;
    --bg-elevated: #1a4232;
    --neon-cyan: #10b981;
    --neon-magenta: #f43f5e;
    --neon-purple: #8b5cf6;
    --neon-yellow: #fbbf24;
    --neon-green: #34d399;
    --text-primary: #ffffff;
    --text-secondary: #a7f3d0;
    --text-muted: #6ee7b7;
    --border-subtle: rgba(74, 222, 128, 0.15);
    --border-default: rgba(74, 222, 128, 0.3);
    --border-neon: rgba(16, 185, 129, 0.4);
    --glow-cyan: 0 0 15px rgba(16, 185, 129, 0.4), 0 0 40px rgba(16, 185, 129, 0.2);
    --glow-cyan-sm: 0 0 8px rgba(16, 185, 129, 0.3);
}

[data-theme="sunset-warm"] {
    --bg-deep: #0f0502;
    --bg-primary: #170905;
    --bg-secondary: #220e08;
    --bg-tertiary: #30140c;
    --bg-elevated: #421c11;
    --neon-cyan: #f97316;
    --neon-magenta: #e11d48;
    --neon-purple: #a855f7;
    --neon-yellow: #f59e0b;
    --neon-green: #84cc16;
    --text-primary: #ffffff;
    --text-secondary: #ffedd5;
    --text-muted: #fdba74;
    --border-subtle: rgba(253, 186, 116, 0.15);
    --border-default: rgba(253, 186, 116, 0.25);
    --border-neon: rgba(249, 115, 22, 0.4);
    --glow-cyan: 0 0 15px rgba(249, 115, 22, 0.4), 0 0 40px rgba(249, 115, 22, 0.2);
    --glow-cyan-sm: 0 0 8px rgba(249, 115, 22, 0.3);
}

[data-theme="dracula"] {
    --bg-deep: #282a36;
    --bg-primary: #2b2d39;
    --bg-secondary: #313342;
    --bg-tertiary: #383a59;
    --bg-elevated: #44475a;
    --neon-cyan: #8be9fd;
    --neon-magenta: #ff79c6;
    --neon-purple: #bd93f9;
    --neon-yellow: #f1fa8c;
    --neon-green: #50fa7b;
    --text-primary: #f8f8f2;
    --text-secondary: #bfbfbf;
    --text-muted: #6272a4;
    --border-subtle: rgba(255,255,255,0.06);
    --border-default: rgba(255,255,255,0.12);
    --border-neon: rgba(189,147,249,0.3);
    --glow-cyan: 0 0 15px rgba(139,233,253,0.3), 0 0 40px rgba(139,233,253,0.1);
    --glow-cyan-sm: 0 0 8px rgba(139,233,253,0.25);
}

[data-theme="synthwave"] {
    --bg-deep: #0d0413;
    --bg-primary: #150920;
    --bg-secondary: #1e0e2d;
    --bg-tertiary: #2a143d;
    --bg-elevated: #3c1c57;
    --neon-cyan: #00f0ff;
    --neon-magenta: #ff2a6d;
    --neon-purple: #b537f2;
    --neon-yellow: #f7a400;
    --neon-green: #05d59e;
    --text-primary: #ffffff;
    --text-secondary: #e6d4ed;
    --text-muted: #be9acb;
    --border-subtle: rgba(255,42,109,0.15);
    --border-default: rgba(255,42,109,0.25);
    --border-neon: rgba(255,42,109,0.4);
    --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.5), 0 0 40px rgba(255, 42, 109, 0.3);
    --glow-cyan-sm: 0 0 8px rgba(0, 240, 255, 0.4);
}

[data-theme="minimal-light"] {
    --bg-deep: #f8fafc;
    --bg-primary: #ffffff;
    --bg-secondary: #f1f5f9;
    --bg-tertiary: #e2e8f0;
    --bg-elevated: #ffffff;
    --bg-hover: rgba(0,0,0,0.04);
    --neon-cyan: #0284c7;
    --neon-magenta: #db2777;
    --neon-purple: #7c3aed;
    --neon-yellow: #d97706;
    --neon-green: #059669;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-subtle: rgba(0,0,0,0.06);
    --border-default: rgba(0,0,0,0.12);
    --border-neon: rgba(2,132,199,0.2);
    --glow-cyan: 0 0 8px rgba(2,132,199,0.15);
    --glow-cyan-sm: 0 0 4px rgba(2,132,199,0.1);
}

[data-theme="minimal-light"] .bg-grid,
[data-theme="minimal-light"] .bg-scanlines,
[data-theme="minimal-light"] .bg-glow {
    display: none;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-body); background: var(--bg-deep); color: var(--text-primary); overflow: hidden; height: 100vh; height: 100dvh; width: 100vw; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; outline: none; }
input, textarea { font-family: inherit; border: none; outline: none; background: none; color: inherit; }
a { color: var(--neon-cyan); text-decoration: none; }

/* ---- Animated Background ---- */
.bg-grid {
    position: fixed; inset: 0; z-index: 0;
    background-image:
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridPulse 8s ease-in-out infinite;
}
@keyframes gridPulse { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }

.bg-scanlines {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 0, 0, 0.03) 2px, rgba(0, 0, 0, 0.03) 4px);
    opacity: 0.4;
}

.bg-glow {
    position: fixed; width: 500px; height: 500px; border-radius: 50%;
    filter: blur(120px); z-index: 0; pointer-events: none; opacity: 0.12;
}
.bg-glow-1 { background: var(--neon-cyan); top: -150px; right: -100px; animation: glowFloat1 12s ease-in-out infinite; }
.bg-glow-2 { background: var(--neon-magenta); bottom: -200px; left: -150px; animation: glowFloat2 15s ease-in-out infinite; }

@keyframes glowFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-40px, 60px) scale(1.1); }
    66% { transform: translate(30px, -30px) scale(0.95); }
}
@keyframes glowFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    40% { transform: translate(50px, -40px) scale(1.15); }
    70% { transform: translate(-30px, 30px) scale(0.9); }
}

/* ---- App Layout ---- */
.app { display: flex; height: 100vh; height: 100dvh; width: 100vw; position: relative; z-index: 1; }

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width); height: 100vh; display: flex; flex-direction: column;
    background: rgba(10, 10, 20, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-neon); position: relative; z-index: 10;
    transition: transform var(--transition-slow);
}
.sidebar::after {
    content: ''; position: absolute; top: 0; right: 0; width: 1px; height: 100%;
    background: linear-gradient(to bottom, transparent, var(--neon-cyan) 20%, var(--neon-purple) 50%, var(--neon-magenta) 80%, transparent);
    opacity: 0.4;
}

.sidebar-header { padding: 20px 16px 12px; flex-shrink: 0; }
.logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.logo-icon {
    display: flex; align-items: center; justify-content: center; width: 36px; height: 36px;
    color: var(--neon-cyan); filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5));
    animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5)); }
    50% { filter: drop-shadow(0 0 16px rgba(0, 240, 255, 0.8)); }
}
.logo-text {
    font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; letter-spacing: 2px;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.new-chat-btn {
    display: flex; align-items: center; gap: 8px; width: 100%; padding: 10px 14px;
    border-radius: var(--radius-md); border: 1px solid var(--border-neon);
    color: var(--neon-cyan); font-size: 0.875rem; font-weight: 500;
    transition: all var(--transition-normal); background: rgba(0, 240, 255, 0.03);
}
.new-chat-btn:hover {
    background: rgba(0, 240, 255, 0.08); border-color: var(--neon-cyan);
    box-shadow: var(--glow-cyan-sm); transform: translateY(-1px);
}

.sidebar-divider { height: 1px; margin: 0 16px; background: linear-gradient(90deg, transparent, var(--border-neon), transparent); }
.sidebar-label { padding: 12px 16px 6px; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; color: var(--text-muted); }

.sidebar-conversations { flex: 1; overflow-y: auto; padding: 4px 8px; }
.sidebar-conversations::-webkit-scrollbar { width: 4px; }
.sidebar-conversations::-webkit-scrollbar-track { background: transparent; }
.sidebar-conversations::-webkit-scrollbar-thumb { background: rgba(0, 240, 255, 0.15); border-radius: 4px; }

.conv-item {
    display: flex; align-items: center; gap: 8px; padding: 10px 12px; margin: 2px 0;
    border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition-fast);
    position: relative; border: 1px solid transparent;
}
.conv-item:hover { background: var(--bg-hover); border-color: rgba(0, 240, 255, 0.08); }
.conv-item.active { background: rgba(0, 240, 255, 0.06); border-color: rgba(0, 240, 255, 0.15); }
.conv-item.active::before {
    content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 3px; height: 60%; background: var(--neon-cyan); border-radius: 0 3px 3px 0;
    box-shadow: 0 0 8px var(--neon-cyan);
}
.conv-icon { flex-shrink: 0; color: var(--text-muted); opacity: 0.7; }
.conv-title {
    flex: 1; font-size: 0.85rem; color: var(--text-secondary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color var(--transition-fast);
}
.conv-item:hover .conv-title, .conv-item.active .conv-title { color: var(--text-primary); }
.conv-item.pinned {
    border-left: 2px solid var(--neon-yellow);
}
.conv-pin {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 4px;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}
.conv-item:hover .conv-pin,
.conv-pin.pinned {
    opacity: 1;
}
.conv-pin:hover {
    color: var(--neon-yellow);
    background: rgba(255, 225, 86, 0.1);
}
.conv-item .conv-pin[data-pin-id] svg[fill='currentColor'] {
    color: var(--neon-yellow);
    opacity: 1;
}
.conv-delete {
    flex-shrink: 0; opacity: 0; width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 6px; color: var(--text-muted); transition: all var(--transition-fast);
}
.conv-item:hover .conv-delete { opacity: 1; }
.conv-delete:hover { background: rgba(255, 45, 120, 0.15); color: var(--neon-magenta); }
.conv-empty { padding: 20px 16px; text-align: center; color: var(--text-muted); font-size: 0.8rem; }

.sidebar-footer { flex-shrink: 0; padding: 8px; border-top: 1px solid var(--border-subtle); display: flex; flex-direction: column; gap: 2px; }
.sidebar-footer-btn {
    display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px;
    border-radius: var(--radius-sm); font-size: 0.85rem; color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.sidebar-footer-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-footer-btn.settings-trigger:hover { color: var(--neon-cyan); }

/* ===== MAIN AREA ===== */
.main { flex: 1; display: flex; flex-direction: column; height: 100vh; min-width: 0; position: relative; }

/* ===== TOP BAR ===== */
.topbar {
    height: var(--topbar-height); flex-shrink: 0; display: flex; align-items: center; gap: 12px;
    padding: 0 20px; background: rgba(10, 10, 20, 0.6); backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-subtle); z-index: 5;
}
.topbar.streaming { border-bottom-color: var(--neon-cyan); box-shadow: 0 1px 12px rgba(0, 240, 255, 0.1); }

.sidebar-toggle {
    display: none; width: 36px; height: 36px; align-items: center; justify-content: center;
    border-radius: var(--radius-sm); color: var(--text-secondary); transition: all var(--transition-fast);
}
.sidebar-toggle:hover { background: var(--bg-hover); color: var(--neon-cyan); }

.topbar-title {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 600;
    letter-spacing: 1.5px; color: var(--text-secondary);
}

.thinking-status {
    display: none; align-items: center; gap: 8px; padding: 4px 14px;
    border-radius: 20px; background: rgba(0, 240, 255, 0.06);
    border: 1px solid rgba(0, 240, 255, 0.15);
    animation: thinkingFadeIn 0.3s ease;
}
.thinking-status.active { display: flex; }
@keyframes thinkingFadeIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

.thinking-pulse-ring {
    width: 10px; height: 10px; border-radius: 50%; background: var(--neon-cyan);
    animation: pulseRing 1.5s ease-in-out infinite;
    box-shadow: 0 0 6px var(--neon-cyan);
}
@keyframes pulseRing {
    0%, 100% { transform: scale(1); opacity: 1; box-shadow: 0 0 6px var(--neon-cyan); }
    50% { transform: scale(1.3); opacity: 0.6; box-shadow: 0 0 14px var(--neon-cyan), 0 0 24px rgba(0, 240, 255, 0.3); }
}

.thinking-label {
    font-size: 0.78rem; font-weight: 500; color: var(--neon-cyan); letter-spacing: 0.5px;
    animation: thinkingTextPulse 2s ease-in-out infinite;
}
@keyframes thinkingTextPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }

.thinking-timer {
    font-family: var(--font-mono); font-size: 0.72rem; color: var(--neon-cyan-dim);
    min-width: 28px; text-align: right;
}

.topbar-stats { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.stat-chip {
    display: flex; align-items: center; gap: 5px; padding: 4px 10px;
    border-radius: 14px; background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle); font-size: 0.75rem;
    color: var(--text-muted); transition: all var(--transition-fast);
    font-family: var(--font-mono); white-space: nowrap;
}
.stat-chip:hover { border-color: var(--border-neon); color: var(--text-secondary); }
.stat-chip svg { opacity: 0.6; }
.stat-chip span:not(.stat-label) { color: var(--text-secondary); font-weight: 600; }
.stat-label { font-family: var(--font-body); font-size: 0.68rem; }

.context-bar-wrapper { display: none; align-items: center; gap: 6px; padding: 0 4px; }
.context-bar-wrapper.active { display: flex; }
.context-bar-track { width: 60px; height: 5px; border-radius: 5px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
.context-bar-fill {
    height: 100%; border-radius: 5px; width: 0%;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
    transition: width 0.5s ease, background 0.5s ease;
    box-shadow: 0 0 6px rgba(0, 240, 255, 0.3);
}
.context-bar-fill.warning { background: linear-gradient(90deg, var(--neon-yellow), #ff9800); box-shadow: 0 0 6px rgba(255, 225, 86, 0.4); }
.context-bar-fill.critical { background: linear-gradient(90deg, #ff9800, var(--neon-magenta)); box-shadow: 0 0 6px rgba(255, 45, 120, 0.4); animation: criticalPulse 1s ease-in-out infinite; }
@keyframes criticalPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.7; } }
.context-bar-text { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); min-width: 28px; }

.topbar-status { font-size: 0.75rem; color: var(--text-muted); }
.topbar-status.connected { color: var(--neon-green); }

/* ===== CONTEXT WARNING BANNER ===== */
.context-warning {
    display: none; align-items: center; gap: 10px;
    padding: 10px 20px; background: rgba(255, 45, 120, 0.06);
    border-bottom: 1px solid rgba(255, 45, 120, 0.15);
    color: var(--neon-magenta); font-size: 0.82rem; flex-shrink: 0;
    animation: warningSlideIn 0.3s ease;
}
.context-warning.active { display: flex; }
.context-warning svg { flex-shrink: 0; }
@keyframes warningSlideIn { from { opacity: 0; transform: translateY(-100%); } to { opacity: 1; transform: translateY(0); } }

.context-warning-btn {
    margin-left: auto; padding: 5px 14px; border-radius: 6px; font-size: 0.78rem; font-weight: 600;
    background: rgba(0, 240, 255, 0.1); border: 1px solid var(--border-neon);
    color: var(--neon-cyan); transition: all var(--transition-fast); white-space: nowrap;
}
.context-warning-btn:hover { background: rgba(0, 240, 255, 0.2); box-shadow: var(--glow-cyan-sm); }
.context-warning-close {
    width: 24px; height: 24px; display: flex; align-items: center; justify-content: center;
    border-radius: 4px; font-size: 0.75rem; color: var(--text-muted); transition: all var(--transition-fast);
}
.context-warning-close:hover { background: rgba(255, 45, 120, 0.15); color: var(--neon-magenta); }

/* ===== CHAT CONTAINER ===== */
.chat-container { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.chat-container::-webkit-scrollbar { width: 6px; }
.chat-container::-webkit-scrollbar-track { background: transparent; }
.chat-container::-webkit-scrollbar-thumb { background: rgba(0, 240, 255, 0.1); border-radius: 4px; }
.chat-container::-webkit-scrollbar-thumb:hover { background: rgba(0, 240, 255, 0.2); }

.chat-container.streaming-active {
    border-left: 2px solid transparent;
    animation: streamBorder 2s linear infinite;
}
@keyframes streamBorder {
    0% { border-image: linear-gradient(to bottom, var(--neon-cyan), transparent) 1; }
    50% { border-image: linear-gradient(to bottom, transparent, var(--neon-cyan), transparent) 1; }
    100% { border-image: linear-gradient(to bottom, transparent, var(--neon-cyan)) 1; }
}

/* ===== WELCOME SCREEN ===== */
.welcome {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 100%; padding: 40px 24px; text-align: center; animation: fadeInUp 0.6s ease;
}
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.welcome-icon {
    width: 88px; height: 88px; display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px; color: var(--neon-cyan); position: relative;
    animation: welcomeIconFloat 4s ease-in-out infinite;
}
.welcome-icon::before {
    content: ''; position: absolute; inset: -8px; border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
    animation: welcomeGlow 3s ease-in-out infinite;
}
@keyframes welcomeIconFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes welcomeGlow { 0%, 100% { opacity: 0.5; transform: scale(1); } 50% { opacity: 1; transform: scale(1.15); } }

.welcome-title {
    font-family: var(--font-display); font-size: 2.2rem; font-weight: 900; letter-spacing: 4px;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple), var(--neon-magenta));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    background-size: 200% 200%; animation: gradientShift 6s ease-in-out infinite;
}
@keyframes gradientShift { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

.welcome-subtitle { font-size: 1rem; color: var(--text-secondary); margin-bottom: 32px; }

.welcome-setup { margin-bottom: 28px; }
.setup-alert {
    display: flex; align-items: center; gap: 10px; padding: 12px 18px;
    border-radius: var(--radius-md); background: rgba(255, 225, 86, 0.06);
    border: 1px solid rgba(255, 225, 86, 0.2); color: var(--neon-yellow); font-size: 0.875rem;
    margin-bottom: 14px;
}
.setup-btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.12), rgba(180, 77, 255, 0.12));
    border: 1px solid var(--border-neon); color: var(--neon-cyan); font-size: 0.9rem;
    font-weight: 500; transition: all var(--transition-normal);
}
.setup-btn:hover {
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(180, 77, 255, 0.2));
    box-shadow: var(--glow-cyan-sm); transform: translateY(-2px);
}

.welcome-hints { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; max-width: 520px; width: 100%; }
.hint-card {
    display: flex; align-items: center; gap: 10px; padding: 14px 16px;
    border-radius: var(--radius-md); background: rgba(14, 14, 26, 0.6);
    border: 1px solid var(--border-subtle); cursor: pointer;
    transition: all var(--transition-normal); text-align: left;
}
.hint-card:hover {
    background: rgba(0, 240, 255, 0.04); border-color: var(--border-neon);
    transform: translateY(-2px); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.hint-icon { font-size: 1.3rem; flex-shrink: 0; }
.hint-text { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.4; }
.hint-card:hover .hint-text { color: var(--text-primary); }

/* ===== MESSAGES ===== */
.messages { padding: 24px 0; }
.message { padding: 16px 24px; animation: msgFadeIn 0.35s ease; }
@keyframes msgFadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.message-inner { max-width: var(--message-max-width); margin: 0 auto; display: flex; gap: 16px; }

.message-avatar {
    flex-shrink: 0; width: 32px; height: 32px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; font-weight: 700; margin-top: 2px;
}
.message.user .message-avatar {
    background: linear-gradient(135deg, var(--neon-magenta), var(--neon-purple));
    box-shadow: 0 0 12px rgba(255, 45, 120, 0.2);
}
.message.assistant .message-avatar {
    background: linear-gradient(135deg, var(--neon-cyan), #00a0ff);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.2); color: var(--bg-deep);
}

.message-content {
    flex: 1; min-width: 0; line-height: 1.7; font-size: 0.938rem;
    color: var(--text-primary);
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
}
.message.assistant { background: rgba(0, 240, 255, 0.015); }

.message-content p { margin-bottom: 12px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content strong { font-weight: 600; color: var(--neon-cyan); }
.message-content em { color: var(--neon-purple); font-style: italic; }

.message-content h1, .message-content h2, .message-content h3 {
    font-family: var(--font-display); letter-spacing: 0.5px; margin: 20px 0 10px; color: var(--text-primary);
}
.message-content h1 { font-size: 1.3rem; }
.message-content h2 { font-size: 1.15rem; }
.message-content h3 { font-size: 1rem; }
.message-content ul, .message-content ol { margin: 8px 0 12px 20px; }
.message-content li { margin-bottom: 4px; }
.message-content a { color: var(--neon-cyan); text-decoration: underline; text-underline-offset: 2px; }
.message-content a:hover { color: var(--neon-purple); }
.message-content code:not(.code-block code) {
    background: rgba(0, 240, 255, 0.08); border: 1px solid rgba(0, 240, 255, 0.12);
    padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono);
    font-size: 0.85em; color: var(--neon-cyan);
}

.message-content img { max-width: 100%; border-radius: 8px; margin: 8px 0; }

.user-images { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.user-image-thumb {
    max-width: 200px; max-height: 200px; object-fit: cover;
    border-radius: 8px; border: 1px solid var(--border-subtle);
}

/* Code blocks */
.code-block-wrapper {
    position: relative; margin: 14px 0; border-radius: var(--radius-md);
    overflow: hidden; border: 1px solid rgba(0, 240, 255, 0.1); background: rgba(6, 6, 14, 0.8);
}
.code-block-header {
    display: flex; align-items: center; justify-content: space-between; padding: 8px 14px;
    background: rgba(0, 240, 255, 0.04); border-bottom: 1px solid rgba(0, 240, 255, 0.08);
}
.code-language {
    font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px;
}
.code-actions { display: flex; gap: 4px; }
.code-copy-btn, .code-download-btn {
    display: flex; align-items: center; gap: 5px; padding: 4px 10px;
    border-radius: 6px; font-size: 0.72rem; color: var(--text-muted);
    transition: all var(--transition-fast); font-family: var(--font-mono);
}
.code-copy-btn:hover, .code-download-btn:hover { background: rgba(0, 240, 255, 0.1); color: var(--neon-cyan); }
.code-copy-btn.copied { color: var(--neon-green); }

.code-block {
    padding: 16px; overflow-x: auto;
    font-family: var(--font-mono); font-size: 0.84rem;
    line-height: 1.65; color: var(--text-primary);
    tab-size: 4; white-space: pre-wrap; word-wrap: break-word;
}
.code-block::-webkit-scrollbar { height: 4px; }
.code-block::-webkit-scrollbar-track { background: transparent; }
.code-block::-webkit-scrollbar-thumb { background: rgba(0, 240, 255, 0.15); border-radius: 4px; }

/* Thinking Block */
.thinking-block {
    margin: 12px 0; border-radius: var(--radius-md); border: 1px solid rgba(180, 77, 255, 0.15);
    background: rgba(180, 77, 255, 0.04); overflow: hidden;
}
.thinking-block-toggle {
    display: flex; align-items: center; gap: 8px; width: 100%; padding: 10px 14px;
    cursor: pointer; color: var(--neon-purple); font-size: 0.82rem; font-weight: 500;
    transition: background 0.15s; background: none; border: none; font-family: inherit;
}
.thinking-block-toggle:hover { background: rgba(180, 77, 255, 0.06); }
.thinking-block-toggle svg { transition: transform 0.2s; }
.thinking-block-toggle.open svg { transform: rotate(90deg); }
.thinking-block-content {
    padding: 0 14px 12px; font-size: 0.85rem; color: var(--text-secondary);
    line-height: 1.6; display: none; border-top: 1px solid rgba(180, 77, 255, 0.1); padding-top: 10px;
}
.thinking-block-content.open { display: block; }
.thinking-block-label { font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 1px; }

/* Typing Indicator */
.typing-indicator { display: flex; align-items: center; gap: 5px; padding: 8px 0; }
.typing-dot {
    width: 7px; height: 7px; border-radius: 50%; background: var(--neon-cyan);
    opacity: 0.4; animation: typingBounce 1.4s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-8px); opacity: 1; box-shadow: 0 0 8px var(--neon-cyan); }
}

/* Error message */
.message-error {
    padding: 14px 18px; border-radius: var(--radius-md);
    background: rgba(255, 45, 120, 0.06); border: 1px solid rgba(255, 45, 120, 0.2);
    color: var(--text-primary); font-size: 0.875rem;
}
.error-header {
    display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
    font-weight: 600; color: var(--neon-magenta); font-size: 0.85rem;
}
.error-detail { color: var(--text-secondary); font-size: 0.82rem; line-height: 1.5; margin-bottom: 10px; }
.error-actions { display: flex; gap: 8px; }
.retry-btn {
    display: flex; align-items: center; gap: 5px; padding: 6px 14px; border-radius: 6px;
    font-size: 0.78rem; font-weight: 600; background: rgba(0, 240, 255, 0.08);
    border: 1px solid var(--border-neon); color: var(--neon-cyan); transition: all var(--transition-fast);
}
.retry-btn:hover { background: rgba(0, 240, 255, 0.15); box-shadow: var(--glow-cyan-sm); }

/* ===== INPUT AREA ===== */
.input-area { flex-shrink: 0; padding: 12px 24px 16px; background: linear-gradient(to top, var(--bg-deep) 40%, transparent); }

.image-preview-area {
    display: flex; flex-wrap: wrap; gap: 8px;
    max-width: var(--input-max-width); margin: 0 auto 8px;
}
.image-preview-item {
    position: relative; border-radius: 8px; overflow: hidden;
    border: 1px solid var(--border-default); max-width: 120px; max-height: 120px;
}
.image-preview-item img { width: 100%; height: 100%; object-fit: cover; display: block; }
.image-preview-remove {
    position: absolute; top: 4px; right: 4px; width: 22px; height: 22px;
    border-radius: 50%; background: rgba(0, 0, 0, 0.7); color: white;
    display: flex; align-items: center; justify-content: center; font-size: 12px;
    cursor: pointer; border: none; transition: background 0.15s;
}
.image-preview-remove:hover { background: var(--neon-magenta); }

.input-wrapper {
    max-width: var(--input-max-width); margin: 0 auto;
    display: flex; flex-direction: column; border-radius: var(--radius-lg);
    background: var(--bg-tertiary); border: 1px solid var(--border-default);
    transition: all var(--transition-normal);
}
.input-wrapper:focus-within {
    border-color: var(--neon-cyan);
    box-shadow: var(--glow-cyan-sm), inset 0 0 30px rgba(0, 240, 255, 0.02);
}

.input-wrapper textarea {
    width: 100%; resize: none; border: none; background: none;
    color: var(--text-primary); font-size: 0.938rem; line-height: 1.5;
    padding: 14px 18px 8px; max-height: 180px; min-height: 24px;
    font-family: var(--font-body); outline: none !important;
}
.input-wrapper textarea:focus { outline: none !important; }
.input-wrapper textarea::placeholder { color: var(--text-muted); }

.input-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 4px 8px 8px;
}
.input-tools-left { display: flex; align-items: center; gap: 2px; }
.input-tools-right { display: flex; align-items: center; gap: 6px; }

.tool-btn {
    width: 34px; height: 34px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); transition: all var(--transition-fast);
}
.tool-btn:hover { background: var(--bg-hover); color: var(--text-secondary); }

.thinking-chip {
    width: auto; padding: 4px 12px; gap: 5px; font-size: 0.78rem;
    border: 1px solid transparent; border-radius: 16px;
}
.thinking-chip span { display: inline; }
.thinking-chip.active {
    background: rgba(180, 77, 255, 0.1); border-color: rgba(180, 77, 255, 0.3);
    color: var(--neon-purple); box-shadow: 0 0 8px rgba(180, 77, 255, 0.15);
}

.send-btn, .stop-btn {
    width: 38px; height: 38px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center; transition: all var(--transition-normal);
}
.send-btn { background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple)); color: var(--bg-deep); opacity: 0.3; pointer-events: none; }
.send-btn.active { opacity: 1; pointer-events: auto; }
.send-btn.active:hover { transform: scale(1.05); box-shadow: var(--glow-cyan); }
.stop-btn { background: var(--neon-magenta); color: white; }
.stop-btn:hover { transform: scale(1.05); box-shadow: var(--glow-magenta); }

.input-disclaimer {
    text-align: center; font-size: 0.72rem; color: var(--text-muted); margin-top: 8px;
    max-width: var(--input-max-width); margin-left: auto; margin-right: auto;
}

/* ===== SETTINGS MODAL ===== */
.modal-overlay {
    position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center;
    background: rgba(4, 4, 10, 0.8); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    opacity: 0; pointer-events: none; transition: opacity var(--transition-normal);
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal {
    width: 90%; max-width: 520px; max-height: 88vh; overflow-y: auto;
    border-radius: var(--radius-xl); background: var(--bg-secondary);
    border: 1px solid var(--border-neon); box-shadow: 0 0 30px rgba(0, 240, 255, 0.08), 0 24px 48px rgba(0, 0, 0, 0.5);
    transform: scale(0.92) translateY(20px); transition: transform var(--transition-slow);
}
.modal::-webkit-scrollbar { width: 4px; }
.modal::-webkit-scrollbar-track { background: transparent; }
.modal::-webkit-scrollbar-thumb { background: rgba(0, 240, 255, 0.15); border-radius: 4px; }
.modal-overlay.active .modal { transform: scale(1) translateY(0); }

.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px 16px; border-bottom: 1px solid var(--border-subtle); }
.modal-title { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 0.95rem; font-weight: 600; letter-spacing: 1px; color: var(--neon-cyan); }
.modal-close { width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; border-radius: 8px; color: var(--text-muted); transition: all var(--transition-fast); }
.modal-close:hover { background: rgba(255, 45, 120, 0.1); color: var(--neon-magenta); }

.modal-body { padding: 20px 24px; display: flex; flex-direction: column; gap: 20px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--text-secondary); }
.optional-tag { font-size: 0.65rem; font-weight: 400; color: var(--text-muted); text-transform: none; letter-spacing: 0; margin-left: 6px; }
.form-group input, .form-group textarea {
    padding: 11px 14px; border-radius: var(--radius-sm); background: var(--bg-tertiary);
    border: 1px solid var(--border-default); color: var(--text-primary); font-size: 0.9rem; transition: all var(--transition-fast);
}
.form-group textarea { resize: vertical; min-height: 70px; line-height: 1.5; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--neon-cyan); box-shadow: var(--glow-cyan-sm); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }

.input-with-action { display: flex; position: relative; }
.input-with-action input { flex: 1; padding-right: 44px; width: 100%; }
.input-action-btn { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: 6px; color: var(--text-muted); transition: all var(--transition-fast); }
.input-action-btn:hover { background: rgba(0, 240, 255, 0.1); color: var(--neon-cyan); }
.form-hint { font-size: 0.72rem; color: var(--text-muted); line-height: 1.4; }

.model-selector { position: relative; }
.model-input-row { display: flex; gap: 6px; }
.model-input-row input { flex: 1; padding: 11px 14px; border-radius: var(--radius-sm); background: var(--bg-tertiary); border: 1px solid var(--border-default); color: var(--text-primary); font-size: 0.9rem; transition: all var(--transition-fast); }
.model-input-row input:focus { border-color: var(--neon-cyan); box-shadow: var(--glow-cyan-sm); }
.fetch-models-btn { display: flex; align-items: center; gap: 5px; padding: 0 14px; border-radius: var(--radius-sm); background: rgba(0, 240, 255, 0.06); border: 1px solid var(--border-neon); color: var(--neon-cyan); font-size: 0.78rem; font-weight: 500; transition: all var(--transition-fast); white-space: nowrap; }
.fetch-models-btn:hover { background: rgba(0, 240, 255, 0.12); box-shadow: var(--glow-cyan-sm); }
.fetch-models-btn.loading svg { animation: spin 1s linear infinite; }
.fetch-models-btn.loading { opacity: 0.7; pointer-events: none; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.model-dropdown { display: none; position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 20; border-radius: var(--radius-md); background: var(--bg-elevated); border: 1px solid var(--border-neon); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5); max-height: 260px; overflow: hidden; animation: dropdownIn 0.2s ease; }
.model-dropdown.active { display: block; }
@keyframes dropdownIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.model-dropdown-header { padding: 8px; border-bottom: 1px solid var(--border-subtle); }
.model-search { width: 100%; padding: 8px 12px; border-radius: 6px; background: var(--bg-tertiary); border: 1px solid var(--border-subtle); color: var(--text-primary); font-size: 0.82rem; }
.model-search:focus { border-color: var(--border-neon); }
.model-dropdown-list { overflow-y: auto; max-height: 200px; padding: 4px; }
.model-dropdown-list::-webkit-scrollbar { width: 4px; }
.model-dropdown-list::-webkit-scrollbar-thumb { background: rgba(0, 240, 255, 0.15); border-radius: 4px; }
.model-option { padding: 9px 12px; border-radius: 6px; cursor: pointer; font-size: 0.82rem; font-family: var(--font-mono); color: var(--text-secondary); transition: all var(--transition-fast); display: flex; align-items: center; justify-content: space-between; }
.model-option:hover { background: rgba(0, 240, 255, 0.06); color: var(--text-primary); }
.model-option.selected { background: rgba(0, 240, 255, 0.1); color: var(--neon-cyan); }
.model-option-owner { font-size: 0.68rem; font-family: var(--font-body); color: var(--text-muted); }
.model-dropdown-empty { padding: 20px; text-align: center; color: var(--text-muted); font-size: 0.82rem; }
.model-dropdown-error { padding: 12px; text-align: center; color: var(--neon-magenta); font-size: 0.8rem; }

.modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 24px 20px; border-top: 1px solid var(--border-subtle); }
.modal-cancel-btn { padding: 10px 20px; border-radius: var(--radius-sm); font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); transition: all var(--transition-fast); }
.modal-cancel-btn:hover { background: rgba(255, 255, 255, 0.05); color: var(--text-primary); }
.modal-save-btn { display: flex; align-items: center; gap: 6px; padding: 10px 24px; border-radius: var(--radius-sm); background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple)); color: var(--bg-deep); font-size: 0.875rem; font-weight: 600; transition: all var(--transition-normal); }
.modal-save-btn:hover { transform: translateY(-1px); box-shadow: var(--glow-cyan); }

/* ===== LARGE MODAL & SIDEBAR ===== */
.modal-large { display: flex; flex-direction: row; max-width: 800px; height: 80vh; padding: 0; overflow: hidden; background: var(--bg-primary); }
.modal-sidebar { width: 220px; background: rgba(14, 14, 26, 0.8); border-right: 1px solid var(--border-subtle); display: flex; flex-direction: column; }
.modal-sidebar-header { padding: 24px 20px 16px; font-family: var(--font-display); font-size: 1.1rem; color: var(--text-primary); font-weight: 600; letter-spacing: 1px; }
.modal-nav { display: flex; flex-direction: column; padding: 0 10px; gap: 4px; }
.modal-nav-item { padding: 10px 14px; text-align: left; border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; transition: all var(--transition-fast); }
.modal-nav-item:hover { background: rgba(255, 255, 255, 0.03); color: var(--text-primary); }
.modal-nav-item.active { background: rgba(0, 240, 255, 0.08); color: var(--neon-cyan); font-weight: 600; }
.modal-content-area { flex: 1; display: flex; flex-direction: column; overflow-y: auto; position: relative; }
.modal-content-area::-webkit-scrollbar { width: 6px; }
.modal-content-area::-webkit-scrollbar-thumb { background: rgba(0, 240, 255, 0.1); border-radius: 4px; }
.modal-tab { display: none; }
.modal-tab.active { display: flex; animation: tabFadeIn 0.3s ease; }
@keyframes tabFadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ===== USAGE DASHBOARD ===== */
.usage-container { display: flex; flex-direction: column; }
.usage-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.usage-header h3 { font-size: 1.2rem; font-weight: 600; color: var(--text-primary); font-family: var(--font-display); }
.refresh-btn { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--neon-cyan); background: rgba(0, 240, 255, 0.08); padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border-neon); transition: all 0.2s; }
.refresh-btn:hover { background: rgba(0, 240, 255, 0.15); }
.refresh-btn.spinning svg { animation: spin 1s linear infinite; }
.usage-desc { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 24px; }
.usage-warning { display: flex; align-items: flex-start; gap: 8px; background: rgba(255, 225, 86, 0.08); border: 1px solid rgba(255, 225, 86, 0.3); padding: 12px; border-radius: var(--radius-md); color: var(--neon-yellow); font-size: 0.8rem; margin-bottom: 20px; line-height: 1.4; }
.usage-warning svg { flex-shrink: 0; margin-top: 2px; }

.usage-card { background: rgba(255, 255, 255, 0.02); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); overflow: hidden; }
.usage-card-inner { padding: 16px 20px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.usage-card h4 { font-size: 0.95rem; color: var(--text-primary); font-weight: 600; margin-bottom: 4px; }
.usage-sub { font-size: 0.8rem; color: var(--text-muted); }
.usage-upgrade-btn { background: #4da6ff; color: #000; font-weight: 600; font-size: 0.8rem; padding: 6px 16px; border-radius: 6px; transition: transform 0.2s; }
.usage-upgrade-btn:hover { transform: scale(1.05); }

.mt-3 { margin-top: 20px; }
.usage-card-header { padding: 14px 20px; border-bottom: 1px solid var(--border-subtle); }
.usage-card-header h4 { margin: 0; font-size: 0.9rem; }
.usage-ring-row { padding: 16px 20px; display: flex; justify-content: space-between; align-items: center; }
.usage-ring-info h5 { font-size: 0.9rem; font-weight: 500; color: var(--text-primary); margin-bottom: 4px; }
.usage-ring-info p { font-size: 0.8rem; color: var(--text-secondary); }

.usage-ring-container { position: relative; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; }
.usage-ring-pct { position: absolute; font-family: var(--font-mono); font-size: 0.8rem; font-weight: 600; color: var(--text-primary); }
.usage-ring-svg { transform: rotate(-90deg); }
.usage-ring-bg { fill: none; stroke: rgba(255, 255, 255, 0.05); stroke-width: 4; }
.usage-ring-fill { fill: none; stroke: var(--neon-green); stroke-width: 4; stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
.usage-ring-fill.warning { stroke: var(--neon-yellow); }
.usage-ring-fill.danger { stroke: var(--neon-magenta); }

/* ===== FORM SELECT & SETTINGS INFO ===== */
.form-select {
    width: 100%; padding: 10px 14px; border-radius: var(--radius-sm);
    background: var(--bg-tertiary); border: 1px solid var(--border-default);
    color: var(--text-primary); font-size: 0.9rem; font-family: var(--font-body);
    outline: none; transition: border-color var(--transition-fast);
    appearance: none; -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238888a0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 12px center;
    cursor: pointer;
}
.form-select:focus { border-color: var(--neon-cyan); }
.form-select option { background: var(--bg-secondary); color: var(--text-primary); }

.settings-info-line {
    font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-secondary);
    padding: 10px 14px; background: rgba(0, 240, 255, 0.03);
    border: 1px solid var(--border-subtle); border-radius: var(--radius-sm);
    margin-bottom: 16px; letter-spacing: 0.3px;
}

.modal-save-btn {
    background: var(--neon-cyan) !important; color: var(--bg-deep) !important;
    border: none !important; padding: 7px 18px !important; border-radius: var(--radius-sm) !important;
    font-weight: 700 !important; font-size: 0.85rem !important; cursor: pointer;
    transition: all var(--transition-fast); font-family: var(--font-body);
}
.modal-save-btn:hover { box-shadow: var(--glow-cyan-sm); transform: scale(1.03); }

/* ===== TOASTS ===== */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column; gap: 8px; }
.toast { display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: var(--radius-md); background: var(--bg-elevated); border: 1px solid var(--border-default); color: var(--text-primary); font-size: 0.85rem; box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4); animation: toastIn 0.35s ease, toastOut 0.3s ease forwards; animation-delay: 0s, 3.5s; min-width: 250px; max-width: 400px; }
@keyframes toastIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(30px); } }
.toast.success { border-left: 4px solid var(--neon-green); border-color: rgba(0, 230, 118, 0.3); }
.toast.success .toast-icon { color: var(--neon-green); }
.toast.error { border-left: 4px solid var(--neon-magenta); border-color: rgba(255, 45, 120, 0.3); }
.toast.error .toast-icon { color: var(--neon-magenta); }
.toast.info { border-left: 4px solid var(--neon-cyan); border-color: var(--border-neon); }
.toast.info .toast-icon { color: var(--neon-cyan); }
.toast.warning { border-left: 4px solid var(--neon-yellow); border-color: rgba(255, 225, 86, 0.3); }
.toast.warning .toast-icon { color: var(--neon-yellow); }
@keyframes toastIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(30px); } }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar { position: fixed; left: 0; top: 0; bottom: 0; transform: translateX(-100%); z-index: 50; box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5); }
    .sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: flex; }
    .welcome-hints { grid-template-columns: 1fr; }
    .welcome-title { font-size: 1.6rem; }
    .message-inner { gap: 10px; }
    .message { padding: 12px 16px; }
    .input-area { padding: 8px 12px 12px; }
    .topbar-stats { gap: 4px; }
    .stat-chip { padding: 3px 7px; font-size: 0.68rem; }
    .stat-label { display: none; }
    .context-bar-wrapper { display: none !important; }
    .fetch-models-text { display: none; }
    .thinking-chip span { display: none; }
}

.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5); z-index: 40; }
.sidebar-overlay.active { display: block; }
::selection { background: rgba(0, 240, 255, 0.2); color: var(--text-primary); }
:focus-visible { outline: 2px solid var(--neon-cyan); outline-offset: 2px; }

/* ===== CLAUDE-STYLE THINKING POPOVER ===== */
.input-tools-left { position: relative; }
.thinking-popover {
    position: absolute; bottom: 100%; left: 0; margin-bottom: 8px;
    width: 320px; background: #222228; border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px; padding: 12px 0; box-shadow: 0 8px 32px rgba(0,0,0,0.6);
    display: none; flex-direction: column; z-index: 100; font-family: var(--font-body);
}
.thinking-popover.show { display: flex; animation: popIn 0.2s cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes popIn { from { opacity: 0; transform: translateY(10px) scale(0.95); } to { opacity: 1; transform: translateY(0) scale(1); } }
.popover-text { padding: 0 16px 12px; font-size: 0.8rem; color: #a0a0a0; line-height: 1.4; border-bottom: 1px solid rgba(255,255,255,0.06); margin-bottom: 8px; }
.effort-list { display: flex; flex-direction: column; }
.effort-item { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; cursor: pointer; color: #c0c0c0; font-size: 0.9rem; transition: background 0.15s; }
.effort-item:hover { background: rgba(255,255,255,0.04); }
.effort-item.active { color: #fff; }
.effort-item .check-icon { width: 16px; height: 16px; color: #4da6ff; opacity: 0; }
.effort-item.active .check-icon { opacity: 1; }
.default-badge { background: rgba(255,255,255,0.1); color: #a0a0a0; font-size: 0.65rem; padding: 2px 6px; border-radius: 4px; margin-left: 8px; text-transform: uppercase; font-weight: 600; }
.info-icon { width: 12px; height: 12px; color: #777; margin-left: 6px; vertical-align: middle; }
.popover-divider { height: 1px; background: rgba(255,255,255,0.06); margin: 8px 0; }
.thinking-switch-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 16px 4px; }
.thinking-switch-info { display: flex; flex-direction: column; }
.switch-title { font-size: 0.95rem; color: #fff; font-weight: 500; }
.switch-desc { font-size: 0.75rem; color: #888; margin-top: 2px; }

.toggle-switch { position: relative; display: inline-block; width: 40px; height: 22px; margin: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(255,255,255,0.15); transition: .3s; border-radius: 22px; }
.slider:before { position: absolute; content: ""; height: 16px; width: 16px; left: 3px; bottom: 3px; background-color: white; transition: .3s; border-radius: 50%; box-shadow: 0 2px 4px rgba(0,0,0,0.2); }
.toggle-switch input:checked + .slider { background-color: #4da6ff; }
.toggle-switch input:checked + .slider:before { transform: translateX(18px); }

.chevron { margin-left: 4px; transition: transform 0.2s; opacity: 0.7; }
.thinking-chip.open .chevron { transform: rotate(180deg); }
.thinking-chip.active { background: rgba(77,166,255,0.1); border-color: rgba(77,166,255,0.3); color: #4da6ff; box-shadow: 0 0 8px rgba(77,166,255,0.15); }

/* ===== MCP SECTION ===== */
.mcp-section { padding: 4px 0; }
.mcp-desc { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.5; }
.mcp-add-btn {
    display: flex; align-items: center; gap: 8px; width: 100%;
    padding: 12px 16px; border-radius: var(--radius-md);
    background: var(--bg-tertiary); border: 1px dashed var(--border-default);
    color: var(--text-secondary); font-size: 0.9rem;
    transition: all var(--transition-fast); margin-bottom: 16px;
}
.mcp-add-btn:hover { border-color: var(--neon-cyan); color: var(--neon-cyan); background: var(--bg-hover); }
.mcp-list { display: flex; flex-direction: column; gap: 8px; }
.mcp-empty { text-align: center; padding: 32px 16px; color: var(--text-muted); font-size: 0.85rem; }
.mcp-server-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 16px; border-radius: var(--radius-md);
    background: var(--bg-tertiary); border: 1px solid var(--border-subtle);
    transition: border-color var(--transition-fast);
}
.mcp-server-item:hover { border-color: var(--border-default); }
.mcp-server-name { font-size: 0.9rem; font-weight: 500; color: var(--text-primary); }
.mcp-server-url { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); margin-top: 2px; }
.mcp-server-delete {
    width: 28px; height: 28px; border-radius: 6px; display: flex;
    align-items: center; justify-content: center; color: var(--text-muted);
    font-size: 12px; transition: all var(--transition-fast);
}
.mcp-server-delete:hover { background: rgba(255,45,120,0.1); color: var(--neon-magenta); }
.mcp-advanced { margin-top: 12px; }
.mcp-advanced summary {
    cursor: pointer; font-size: 0.9rem; font-weight: 500;
    color: var(--text-primary); padding: 8px 0;
}
.mcp-advanced summary:hover { color: var(--neon-cyan); }
.mcp-modal-overlay { z-index: 300; }

/* ===== AUTH & PROFILE ===== */
.user-profile-area {
    padding: 8px 12px;
    border-top: 1px solid var(--border-subtle);
    margin-bottom: 4px;
}

.login-btn {
    width: 100%;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px !important;
    border-radius: var(--radius-md) !important;
    background: linear-gradient(135deg, rgba(0,240,255,0.08), rgba(180,77,255,0.08)) !important;
    border: 1px solid var(--border-neon) !important;
    color: var(--neon-cyan) !important;
    font-weight: 500;
    transition: all var(--transition-fast);
}
.login-btn:hover {
    background: linear-gradient(135deg, rgba(0,240,255,0.15), rgba(180,77,255,0.15)) !important;
    box-shadow: var(--glow-cyan-sm);
}

.user-profile-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: var(--radius-md);
    cursor: default;
    position: relative;
    transition: background var(--transition-fast);
}
.user-profile-card:hover { background: var(--bg-hover); }

.user-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.9rem;
    color: #fff;
    background: #3b82f6;
    flex-shrink: 0;
    text-transform: uppercase;
}
.user-avatar-lg {
    width: 64px; height: 64px;
    font-size: 1.5rem;
    margin: 0 auto;
}

.user-info {
    flex: 1; min-width: 0;
    display: flex; flex-direction: column;
}
.user-name {
    font-size: 0.85rem; font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.user-email {
    font-size: 0.72rem;
    color: var(--text-muted);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.profile-menu-btn {
    width: 28px; height: 28px; border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); transition: all var(--transition-fast);
}
.profile-menu-btn:hover { background: rgba(255,255,255,0.06); color: var(--text-secondary); }

.profile-dropdown {
    display: none;
    position: absolute;
    bottom: calc(100% + 6px); left: 8px; right: 8px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    box-shadow: 0 -8px 32px rgba(0,0,0,0.4);
    z-index: 50;
    padding: 4px;
    animation: dropdownIn 0.15s ease;
}
.profile-dropdown.active { display: block; }

.profile-dropdown-item {
    display: flex; align-items: center; gap: 8px;
    width: 100%; padding: 8px 12px;
    font-size: 0.84rem; color: var(--text-secondary);
    border-radius: 6px; transition: all var(--transition-fast);
}
.profile-dropdown-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.profile-dropdown-item.logout-item:hover { background: rgba(255,45,120,0.08); color: var(--neon-magenta); }

.sidebar-footer-btns {
    display: flex; flex-direction: column; gap: 2px;
}

/* Auth Modal */
.auth-tabs {
    display: flex; gap: 0; margin-bottom: 20px;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    padding: 3px;
}
.auth-tab {
    flex: 1; padding: 8px 16px;
    font-size: 0.85rem; font-weight: 500;
    border-radius: 6px; color: var(--text-muted);
    transition: all var(--transition-fast);
    text-align: center;
}
.auth-tab.active {
    background: var(--bg-elevated);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.auth-tab:hover:not(.active) { color: var(--text-secondary); }

.auth-form { display: none; }
.auth-form.active { display: block; }

.auth-error {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255,45,120,0.08);
    border: 1px solid rgba(255,45,120,0.2);
    color: var(--neon-magenta);
    font-size: 0.82rem;
    margin-bottom: 14px;
    line-height: 1.4;
}

.auth-submit-btn {
    width: 100%; padding: 11px 20px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    color: var(--bg-deep); font-weight: 700;
    font-size: 0.9rem; margin-top: 8px;
    transition: all var(--transition-fast);
    border: none; cursor: pointer;
}
.auth-submit-btn:hover {
    transform: scale(1.02);
    box-shadow: var(--glow-cyan);
}
.auth-submit-btn:disabled {
    opacity: 0.5; cursor: not-allowed; transform: none;
    box-shadow: none;
}

.auth-link-btn {
    display: block; width: 100%; text-align: center;
    padding: 10px; margin-top: 8px;
    font-size: 0.82rem; color: var(--text-muted);
    transition: color var(--transition-fast);
}
.auth-link-btn:hover { color: var(--neon-cyan); }

/* Avatar Color Picker */
.avatar-color-picker {
    display: flex; gap: 8px; flex-wrap: wrap;
}
.color-swatch {
    width: 32px; height: 32px;
    border-radius: 50%; border: 2px solid transparent;
    cursor: pointer; transition: all var(--transition-fast);
}
.color-swatch:hover { transform: scale(1.15); }
.color-swatch.active {
    border-color: #fff;
    box-shadow: 0 0 0 2px var(--bg-deep), 0 0 12px currentColor;
}

/* Adjust form group spacing */
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    margin-bottom: 6px;
    font-size: 0.85rem;
}
.form-group input {
    padding: 10px 14px;
    font-size: 0.95rem;
}

/* Success Overlay */
.success-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg-tertiary);
    z-index: 100;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    border-radius: inherit;
    animation: fadeIn 0.3s ease;
}

/* Checkmark Animation */
.success-checkmark {
    width: 80px; height: 80px;
    margin: 0 auto;
}
.check-icon {
    width: 80px; height: 80px;
    position: relative;
    border-radius: 50%;
    box-sizing: content-box;
    border: 4px solid var(--neon-green);
    box-shadow: 0 0 15px rgba(0, 230, 118, 0.4);
}
.check-icon::before {
    top: 3px; left: -2px;
    width: 30px; transform-origin: 100% 50%;
    border-radius: 100px 0 0 100px;
}
.check-icon::after {
    top: 0; left: 30px;
    width: 60px; transform-origin: 0 50%;
    border-radius: 0 100px 100px 0;
    animation: rotatePlaceholder 4.25s ease-in;
}
.check-icon::before, .check-icon::after {
    content: ''; height: 100px;
    position: absolute; background: var(--bg-tertiary);
    transform: rotate(-45deg);
}
.icon-line {
    height: 5px; background-color: var(--neon-green);
    display: block; border-radius: 2px;
    position: absolute; z-index: 10;
}
.icon-line.line-tip {
    top: 46px; left: 14px; width: 25px;
    transform: rotate(45deg);
    animation: icon-line-tip 0.75s;
}
.icon-line.line-long {
    top: 38px; right: 8px; width: 47px;
    transform: rotate(-45deg);
    animation: icon-line-long 0.75s;
}
.icon-circle {
    top: -4px; left: -4px; z-index: 10;
    width: 80px; height: 80px;
    border-radius: 50%; position: absolute;
    box-sizing: content-box;
    border: 4px solid rgba(0, 230, 118, 0.2);
}
.icon-fix {
    top: 8px; width: 5px; left: 26px;
    z-index: 1; height: 85px;
    position: absolute; transform: rotate(-45deg);
    background-color: var(--bg-tertiary);
}
@keyframes icon-line-tip { 0% { width: 0; left: 1px; top: 19px; } 54% { width: 0; left: 1px; top: 19px; } 70% { width: 50px; left: -8px; top: 37px; } 84% { width: 17px; left: 21px; top: 48px; } 100% { width: 25px; left: 14px; top: 46px; } }
@keyframes icon-line-long { 0% { width: 0; right: 46px; top: 54px; } 65% { width: 0; right: 46px; top: 54px; } 84% { width: 55px; right: 0px; top: 35px; } 100% { width: 47px; right: 8px; top: 38px; } }

/* ===== MOBILE RESPONSIVE FIXES ===== */
@media (max-width: 768px) {
    .modal-large {
        flex-direction: column !important;
        height: 95vh !important;
        max-width: 100% !important;
        width: 100% !important;
        border-radius: 12px !important;
    }
    .modal-sidebar {
        width: 100% !important;
        min-height: auto !important;
        max-height: none !important;
        border-right: none !important;
        border-bottom: 1px solid var(--border-default) !important;
        padding: 12px !important;
    }
    .modal-nav {
        flex-direction: row !important;
        overflow-x: auto !important;
        gap: 4px !important;
        flex-wrap: nowrap !important;
    }
    .modal-nav-item {
        white-space: nowrap !important;
        padding: 8px 14px !important;
        font-size: 0.8rem !important;
    }
    .modal-content-area {
        flex: 1 !important;
        overflow-y: auto !important;
    }
    
    input, textarea, select { font-size: 16px !important; }
}

@media (max-width: 480px) {
    .stat-chip:nth-child(n+3) { display: none !important; }
    .topbar-stats { gap: 4px !important; }
    .thinking-popover { width: 280px !important; left: auto !important; right: 0 !important; }
}

#langToggleBtn {
    font-size: 0.82rem;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}
#langToggleBtn:hover {
    background: var(--bg-hover);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}