/* VARIABLES & THEMES */
:root {
    --font:
        -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
        system-ui, sans-serif;
    --mono: "SF Mono", Consolas, Monaco, monospace;
}

[data-theme="ocean"] {
    --bg: #0f1419;
    --elevated: #1a1f2e;
    --panel: #222838;
    --text: #f0f4f8;
    --text-dim: #a8b3c5;
    --border: rgba(107, 159, 235, 0.2);
    --accent: #5b8fd9;
    --accent-dark: #4a7dc8;
    --glow: rgba(91, 143, 217, 0.25);
    --grad1: #5b8fd9;
    --grad2: #4a7dc8;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="sunset"] {
    --bg: #1a0f0f;
    --elevated: #2d1b1f;
    --panel: #3a2329;
    --text: #fff8f5;
    --text-dim: #e0b8a8;
    --border: rgba(255, 107, 107, 0.2);
    --accent: #ff6b6b;
    --accent-dark: #ee5253;
    --glow: rgba(255, 107, 107, 0.25);
    --grad1: #ff6b6b;
    --grad2: #ffa502;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="forest"] {
    --bg: #0f1a0f;
    --elevated: #1a2318;
    --panel: #222d20;
    --text: #f0f8f0;
    --text-dim: #b5d5b6;
    --border: rgba(102, 187, 106, 0.2);
    --accent: #66bb6a;
    --accent-dark: #4caf50;
    --glow: rgba(102, 187, 106, 0.25);
    --grad1: #66bb6a;
    --grad2: #43a047;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="lavender"] {
    --bg: #130f1a;
    --elevated: #231a2d;
    --panel: #2e2238;
    --text: #f8f0ff;
    --text-dim: #d5b8e0;
    --border: rgba(186, 104, 200, 0.2);
    --accent: #ba68c8;
    --accent-dark: #ab47bc;
    --glow: rgba(186, 104, 200, 0.25);
    --grad1: #ba68c8;
    --grad2: #9c27b0;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="midnight"] {
    --bg: #0a0d12;
    --elevated: #0d1117;
    --panel: #161b22;
    --text: #e6edf3;
    --text-dim: #a0a8b8;
    --border: rgba(88, 166, 255, 0.2);
    --accent: #58a6ff;
    --accent-dark: #1f6feb;
    --glow: rgba(88, 166, 255, 0.25);
    --grad1: #58a6ff;
    --grad2: #1f6feb;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="rose"] {
    --bg: #1a0f14;
    --elevated: #2d1a24;
    --panel: #3a2230;
    --text: #fff0f5;
    --text-dim: #f5b8c8;
    --border: rgba(251, 113, 133, 0.2);
    --accent: #fb7185;
    --accent-dark: #f43f5e;
    --glow: rgba(251, 113, 133, 0.25);
    --grad1: #fb7185;
    --grad2: #ec4899;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="candy"] {
    --bg: #1a0f14;
    --elevated: #2d1a24;
    --panel: #3a2230;
    --text: #fff0f5;
    --text-dim: #f5b8c8;
    --border: rgba(246, 109, 157, 0.2);
    --accent: #f66d9d;
    --accent-dark: #e64980;
    --glow: rgba(246, 109, 157, 0.25);
    --grad1: #f66d9d;
    --grad2: #e64980;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="gold"] {
    --bg: #14120a;
    --elevated: #221e12;
    --panel: #2d2818;
    --text: #fffdf0;
    --text-dim: #d4c9a0;
    --border: rgba(255, 215, 0, 0.2);
    --accent: #ffd700;
    --accent-dark: #e6be00;
    --glow: rgba(255, 215, 0, 0.25);
    --grad1: #ffd700;
    --grad2: #e6be00;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="slate"] {
    --bg: #0e1215;
    --elevated: #1a1f24;
    --panel: #232a30;
    --text: #e8edf0;
    --text-dim: #9aacb8;
    --border: rgba(108, 122, 137, 0.2);
    --accent: #6c7a89;
    --accent-dark: #566573;
    --glow: rgba(108, 122, 137, 0.25);
    --grad1: #6c7a89;
    --grad2: #566573;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="cherry"] {
    --bg: #140a0a;
    --elevated: #241212;
    --panel: #301818;
    --text: #fff0f0;
    --text-dim: #d4a0a0;
    --border: rgba(220, 20, 60, 0.2);
    --accent: #dc143c;
    --accent-dark: #c01030;
    --glow: rgba(220, 20, 60, 0.25);
    --grad1: #dc143c;
    --grad2: #c01030;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="mint"] {
    --bg: #0a1412;
    --elevated: #12221e;
    --panel: #1a2d28;
    --text: #f0fff8;
    --text-dim: #a8d5c5;
    --border: rgba(0, 184, 148, 0.2);
    --accent: #00b894;
    --accent-dark: #00a381;
    --glow: rgba(0, 184, 148, 0.25);
    --grad1: #00b894;
    --grad2: #00a381;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="tangerine"] {
    --bg: #14100a;
    --elevated: #221a12;
    --panel: #2d2218;
    --text: #fff8f0;
    --text-dim: #d4bca0;
    --border: rgba(255, 140, 66, 0.2);
    --accent: #ff8c42;
    --accent-dark: #e67a2e;
    --glow: rgba(255, 140, 66, 0.25);
    --grad1: #ff8c42;
    --grad2: #e67a2e;
    --surface: rgba(255, 255, 255, 0.03);
}

body.study-focus {
    --accent: #ef5350 !important;
    --accent-dark: #e53935 !important;
    --glow: rgba(239, 83, 80, 0.25) !important;
    --grad1: #ef5350 !important;
    --grad2: #c62828 !important;
}

body.study-break {
    --accent: #66bb6a !important;
    --accent-dark: #4caf50 !important;
    --glow: rgba(102, 187, 106, 0.25) !important;
    --grad1: #66bb6a !important;
    --grad2: #388e3c !important;
}

body.no-glow {
    --glow: transparent !important;
}

/* LIGHT MODE — Generic fallback for custom themes & base */
body.light-mode {
    --bg: #f5f7fa;
    --elevated: #ffffff;
    --panel: #e8ecf0;
    --text: #1a1d23;
    --text-dim: #6b7a8f;
    --border: rgba(0, 0, 0, 0.1);
    --surface: rgba(0, 0, 0, 0.02);
}

/* ─── PER-THEME LIGHT MODE VARIANTS ───────────────────────── */

[data-theme="ocean"].light-mode {
    --bg: #f0f4f8;
    --elevated: #ffffff;
    --panel: #e2e8f0;
    --text: #0f172a;
    --text-dim: #64748b;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #3b82f6;
    --accent-dark: #2563eb;
    --glow: rgba(59, 130, 246, 0.15);
    --grad1: #3b82f6;
    --grad2: #2563eb;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="sunset"].light-mode {
    --bg: #fff8f5;
    --elevated: #ffffff;
    --panel: #ffe8e0;
    --text: #1a0f0f;
    --text-dim: #b89484;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #f97316;
    --accent-dark: #ea580c;
    --glow: rgba(249, 115, 22, 0.15);
    --grad1: #f97316;
    --grad2: #ea580c;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="forest"].light-mode {
    --bg: #f0faf0;
    --elevated: #ffffff;
    --panel: #dcedc8;
    --text: #0f1a0f;
    --text-dim: #558b2f;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #4caf50;
    --accent-dark: #388e3c;
    --glow: rgba(76, 175, 80, 0.15);
    --grad1: #4caf50;
    --grad2: #388e3c;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="lavender"].light-mode {
    --bg: #f8f0ff;
    --elevated: #ffffff;
    --panel: #ede5f5;
    --text: #130f1a;
    --text-dim: #9c7ab5;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #a855f7;
    --accent-dark: #9333ea;
    --glow: rgba(168, 85, 247, 0.15);
    --grad1: #a855f7;
    --grad2: #9333ea;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="midnight"].light-mode {
    --bg: #f0f4f8;
    --elevated: #ffffff;
    --panel: #d0d7de;
    --text: #0a0d12;
    --text-dim: #6e7681;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #0969da;
    --accent-dark: #0550ae;
    --glow: rgba(9, 105, 218, 0.15);
    --grad1: #0969da;
    --grad2: #0550ae;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="rose"].light-mode {
    --bg: #fff0f5;
    --elevated: #ffffff;
    --panel: #ffe0eb;
    --text: #1a0f14;
    --text-dim: #c48a99;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #e11d48;
    --accent-dark: #be123c;
    --glow: rgba(225, 29, 72, 0.15);
    --grad1: #e11d48;
    --grad2: #be123c;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="candy"].light-mode {
    --bg: #fff0f5;
    --elevated: #ffffff;
    --panel: #ffe0eb;
    --text: #1a0f14;
    --text-dim: #c48a99;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #ec4899;
    --accent-dark: #db2777;
    --glow: rgba(236, 72, 153, 0.15);
    --grad1: #ec4899;
    --grad2: #db2777;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="gold"].light-mode {
    --bg: #fffdf0;
    --elevated: #ffffff;
    --panel: #fef3c7;
    --text: #14120a;
    --text-dim: #a08a40;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --glow: rgba(245, 158, 11, 0.15);
    --grad1: #f59e0b;
    --grad2: #d97706;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="slate"].light-mode {
    --bg: #f0f2f5;
    --elevated: #ffffff;
    --panel: #dde1e5;
    --text: #0e1215;
    --text-dim: #6b7a8a;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #4a5568;
    --accent-dark: #2d3748;
    --glow: rgba(74, 85, 104, 0.15);
    --grad1: #4a5568;
    --grad2: #2d3748;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="cherry"].light-mode {
    --bg: #fff5f5;
    --elevated: #ffffff;
    --panel: #fed7d7;
    --text: #140a0a;
    --text-dim: #b07070;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #dc2626;
    --accent-dark: #b91c1c;
    --glow: rgba(220, 38, 38, 0.15);
    --grad1: #dc2626;
    --grad2: #b91c1c;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="mint"].light-mode {
    --bg: #f0faf8;
    --elevated: #ffffff;
    --panel: #d0f0e8;
    --text: #0a1412;
    --text-dim: #3b8a7a;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #059669;
    --accent-dark: #047857;
    --glow: rgba(5, 150, 105, 0.15);
    --grad1: #059669;
    --grad2: #047857;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="tangerine"].light-mode {
    --bg: #fff8f0;
    --elevated: #ffffff;
    --panel: #ffedd0;
    --text: #14100a;
    --text-dim: #a08060;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #f97316;
    --accent-dark: #ea580c;
    --glow: rgba(249, 115, 22, 0.15);
    --grad1: #f97316;
    --grad2: #ea580c;
    --surface: rgba(0, 0, 0, 0.02);
}

/* ─── NEW THEMES ──────────────────────────────────────────── */

[data-theme="nebula"] {
    --bg: #0d0a1a;
    --elevated: #1a1530;
    --panel: #251f3d;
    --text: #f0ecff;
    --text-dim: #a898c8;
    --border: rgba(124, 58, 237, 0.2);
    --accent: #7c3aed;
    --accent-dark: #6d28d9;
    --glow: rgba(124, 58, 237, 0.25);
    --grad1: #7c3aed;
    --grad2: #6d28d9;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="nebula"].light-mode {
    --bg: #f5f0ff;
    --elevated: #ffffff;
    --panel: #ede5ff;
    --text: #1a1028;
    --text-dim: #7c5cb8;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #7c3aed;
    --accent-dark: #6d28d9;
    --glow: rgba(124, 58, 237, 0.15);
    --grad1: #7c3aed;
    --grad2: #6d28d9;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="autumn"] {
    --bg: #1a120a;
    --elevated: #2a1f14;
    --panel: #352818;
    --text: #fff8f0;
    --text-dim: #d4b088;
    --border: rgba(217, 119, 6, 0.2);
    --accent: #d97706;
    --accent-dark: #b45309;
    --glow: rgba(217, 119, 6, 0.25);
    --grad1: #d97706;
    --grad2: #b45309;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="autumn"].light-mode {
    --bg: #fff8f0;
    --elevated: #ffffff;
    --panel: #ffedd5;
    --text: #1a120a;
    --text-dim: #a08040;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #d97706;
    --accent-dark: #b45309;
    --glow: rgba(217, 119, 6, 0.15);
    --grad1: #d97706;
    --grad2: #b45309;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="arctic"] {
    --bg: #0a121a;
    --elevated: #122230;
    --panel: #1a2d3d;
    --text: #f0faff;
    --text-dim: #88b8d0;
    --border: rgba(6, 182, 212, 0.2);
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --glow: rgba(6, 182, 212, 0.25);
    --grad1: #06b6d4;
    --grad2: #0891b2;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="arctic"].light-mode {
    --bg: #f0faff;
    --elevated: #ffffff;
    --panel: #cffafe;
    --text: #0a121a;
    --text-dim: #4a8898;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --glow: rgba(6, 182, 212, 0.15);
    --grad1: #06b6d4;
    --grad2: #0891b2;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="neon"] {
    --bg: #0a0a0a;
    --elevated: #1a1a1a;
    --panel: #262626;
    --text: #f0fff0;
    --text-dim: #88cc88;
    --border: rgba(16, 185, 129, 0.2);
    --accent: #10b981;
    --accent-dark: #059669;
    --glow: rgba(16, 185, 129, 0.25);
    --grad1: #10b981;
    --grad2: #059669;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="neon"].light-mode {
    --bg: #f0fff0;
    --elevated: #ffffff;
    --panel: #d1fae5;
    --text: #0a0a0a;
    --text-dim: #4a9a6a;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #10b981;
    --accent-dark: #059669;
    --glow: rgba(16, 185, 129, 0.15);
    --grad1: #10b981;
    --grad2: #059669;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="coffee"] {
    --bg: #120c0a;
    --elevated: #221a14;
    --panel: #2d2218;
    --text: #faf0e8;
    --text-dim: #c0a888;
    --border: rgba(161, 98, 7, 0.2);
    --accent: #a16207;
    --accent-dark: #854d0e;
    --glow: rgba(161, 98, 7, 0.25);
    --grad1: #a16207;
    --grad2: #854d0e;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="coffee"].light-mode {
    --bg: #faf0e8;
    --elevated: #ffffff;
    --panel: #fef3c7;
    --text: #120c0a;
    --text-dim: #8a7a60;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #a16207;
    --accent-dark: #854d0e;
    --glow: rgba(161, 98, 7, 0.15);
    --grad1: #a16207;
    --grad2: #854d0e;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="plum"] {
    --bg: #120a14;
    --elevated: #22142a;
    --panel: #2d1a35;
    --text: #faf0ff;
    --text-dim: #b898d0;
    --border: rgba(168, 85, 247, 0.2);
    --accent: #a855f7;
    --accent-dark: #9333ea;
    --glow: rgba(168, 85, 247, 0.25);
    --grad1: #a855f7;
    --grad2: #9333ea;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="plum"].light-mode {
    --bg: #faf0ff;
    --elevated: #ffffff;
    --panel: #f3e8ff;
    --text: #120a14;
    --text-dim: #8878a0;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #a855f7;
    --accent-dark: #9333ea;
    --glow: rgba(168, 85, 247, 0.15);
    --grad1: #a855f7;
    --grad2: #9333ea;
    --surface: rgba(0, 0, 0, 0.02);
}

[data-theme="coral"] {
    --bg: #140a0a;
    --elevated: #281414;
    --panel: #331a1a;
    --text: #fff8f5;
    --text-dim: #d4a090;
    --border: rgba(249, 115, 22, 0.2);
    --accent: #f97316;
    --accent-dark: #ea580c;
    --glow: rgba(249, 115, 22, 0.25);
    --grad1: #f97316;
    --grad2: #ea580c;
    --surface: rgba(255, 255, 255, 0.03);
}

[data-theme="coral"].light-mode {
    --bg: #fff8f5;
    --elevated: #ffffff;
    --panel: #ffedd5;
    --text: #140a0a;
    --text-dim: #a07860;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #f97316;
    --accent-dark: #ea580c;
    --glow: rgba(249, 115, 22, 0.15);
    --grad1: #f97316;
    --grad2: #ea580c;
    --surface: rgba(0, 0, 0, 0.02);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    transition:
        background 0.6s ease,
        color 0.6s ease;
    overflow-x: hidden;
}

/* Subtle background texture overlay */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(ellipse at 20% 50%, var(--surface) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, var(--surface) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, var(--surface) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* APP LAYOUT */
.app {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: clamp(16px, 4vw, 32px);
    position: relative;
    z-index: 1;
}

/* NAVIGATION */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    gap: 16px;
    flex-wrap: wrap;
}

.nav-tabs {
    display: flex;
    gap: 8px;
    background: var(--elevated);
    padding: 6px;
    border-radius: 18px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(12px);
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    background: transparent;
    border: none;
    color: var(--text-dim);
    padding: 12px 26px;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 90px;
    position: relative;
}

.tab-btn svg {
    width: 26px;
    height: 26px;
}

.tab-btn span {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.tab-btn:hover:not(.active) {
    background: var(--panel);
    color: var(--text);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: 0 8px 20px var(--glow);
    animation: tabPulse 2s ease-in-out infinite;
}

@keyframes tabPulse {
    0%,
    100% {
        box-shadow: 0 8px 20px var(--glow);
    }
    50% {
        box-shadow:
            0 8px 30px var(--glow),
            0 0 40px var(--glow);
    }
}

.nav-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    background: var(--elevated);
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 10px 18px;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 75px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(12px);
}

.action-btn svg {
    width: 22px;
    height: 22px;
}

.action-btn span {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.action-btn:hover {
    color: var(--text);
    background: var(--panel);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    border-color: var(--accent);
}

.action-btn:active {
    transform: translateY(-1px);
}

/* STUDY BANNER */
.study-banner {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    padding: 18px 26px;
    border-radius: 18px;
    margin-bottom: 24px;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideDown 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 8px 24px var(--glow);
    position: relative;
    overflow: hidden;
}

.study-banner::before {
    content: "";
    position: absolute;
    left: 20px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: white;
    animation: pulse-dot 2s ease-in-out infinite;
}

.study-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-left: 30px;
}

.study-phase {
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.01em;
}

.study-session {
    font-size: 13px;
    opacity: 0.9;
    font-weight: 500;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse-dot {
    0%,
    100% {
        opacity: 1;
        transform: scale(1);
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
    }
    50% {
        opacity: 0.6;
        transform: scale(0.85);
        box-shadow: 0 0 5px rgba(255, 255, 255, 0.4);
    }
}

/* MAIN CONTENT */
.main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0;
}

.view {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 36px;
    width: 100%;
    max-width: 650px;
}

.ring {
    position: relative;
    width: clamp(320px, 60vw, 440px);
    height: clamp(320px, 60vw, 440px);
}

.ring-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    filter: drop-shadow(0 0 20px var(--glow));
    animation: ringGlow 3s ease-in-out infinite;
}

@keyframes ringGlow {
    0%,
    100% {
        filter: drop-shadow(0 0 20px var(--glow));
    }
    50% {
        filter: drop-shadow(0 0 35px var(--glow))
            drop-shadow(0 0 50px var(--glow));
    }
}

.ring-bg {
    fill: none;
    stroke: var(--border);
    opacity: 0.5;
    stroke-width: 14;
}

.ring-progress {
    fill: none;
    stroke: url(#gradient);
    stroke-width: 14;
    stroke-dasharray: 942;
    stroke-dashoffset: 0;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.3s ease;
}

.time-display {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.time-input {
    font-family: var(--mono);
    font-size: clamp(60px, 11vw, 88px);
    font-weight: 300;
    color: var(--text);
    background: transparent;
    border: none;
    text-align: center;
    width: clamp(220px, 40vw, 320px);
    padding: 20px;
    border-radius: 16px;
    cursor: text;
    transition: all 0.3s ease;
    letter-spacing: -0.02em;
    caret-color: var(--accent);
}

.time-input:hover:not(:disabled) {
    background: var(--surface);
}

.time-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 4px var(--glow);
}

.time-input:disabled {
    cursor: default;
}

.ms-text {
    font-family: var(--mono);
    font-size: clamp(26px, 5vw, 36px);
    font-weight: 500;
    color: var(--text-dim);
    margin-top: -24px;
    text-align: center;
    letter-spacing: 0.05em;
}

/* PRESETS */
.presets {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
}

.preset-group {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--elevated);
    padding: 6px;
    border-radius: 18px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    transition: all 0.3s ease;
    backdrop-filter: blur(8px);
}

.preset-group:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    border-color: var(--accent);
}

.preset-adj {
    background: transparent;
    border: none;
    color: var(--text-dim);
    width: 36px;
    height: 36px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
}

.preset-adj svg {
    width: 16px;
    height: 16px;
}

.preset-adj:hover {
    color: var(--text);
    background: var(--panel);
    transform: scale(1.15);
}

.preset-adj:active {
    transform: scale(0.95);
}

.preset-add {
    background: var(--panel);
    border: none;
    color: var(--text);
    padding: 12px 24px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    font-family: var(--mono);
    min-width: 80px;
    position: relative;
    overflow: hidden;
}

.preset-add::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 14px;
    pointer-events: none;
}

.preset-add:hover {
    color: white;
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--glow);
}

.preset-add:hover::after {
    opacity: 1;
}

.preset-add span {
    position: relative;
    z-index: 1;
}

.preset-add:active {
    transform: translateY(-2px);
}

/* LAP CONTROLS */
.lap-controls {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.lap-btn {
    background: var(--elevated);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 16px 32px;
    border-radius: 18px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.lap-btn:hover:not(:disabled) {
    background: var(--panel);
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
    border-color: var(--accent);
}

.lap-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.lap-btn svg {
    width: 20px;
    height: 20px;
}

.lap-list {
    background: var(--elevated);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 16px;
    max-height: 280px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.lap-list:empty {
    display: none;
}

.lap-item {
    display: flex;
    justify-content: space-between;
    padding: 14px 18px;
    background: var(--panel);
    border-radius: 12px;
    font-family: var(--mono);
    font-size: 15px;
    animation: lapSlide 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.lap-item:hover {
    background: var(--elevated);
    transform: translateX(6px);
    border-color: var(--accent);
}

@keyframes lapSlide {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.lap-num {
    color: var(--text-dim);
    font-weight: 700;
}

.lap-time {
    color: var(--text);
    font-weight: 600;
}

/* PLAY BUTTON */
.play-zone {
    padding: 28px;
    display: flex;
    justify-content: center;
    gap: 20px;
    position: relative;
    z-index: 1;
}

.play-btn,
.reset-play-btn {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 40px var(--glow);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    animation: playPulse 3s ease-in-out infinite;
    position: relative;
}

@keyframes playPulse {
    0%,
    100% {
        box-shadow: 0 12px 40px var(--glow);
    }
    50% {
        box-shadow:
            0 12px 50px var(--glow),
            0 0 60px var(--glow);
    }
}

.play-btn::before {
    content: "";
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    opacity: 0;
    animation: playRing 3s ease-in-out infinite;
}

@keyframes playRing {
    0%,
    100% {
        opacity: 0;
        transform: scale(1);
    }
    50% {
        opacity: 0.3;
        transform: scale(1.05);
    }
}

.play-btn:hover,
.reset-play-btn:hover {
    transform: scale(1.1) translateY(-6px);
    box-shadow:
        0 18px 60px var(--glow),
        0 0 80px var(--glow);
}

.play-btn:active,
.reset-play-btn:active {
    transform: scale(1.05) translateY(-3px);
}

.play-btn svg,
.reset-play-btn svg {
    width: 48px;
    height: 48px;
    position: relative;
    z-index: 1;
}

.reset-play-btn {
    width: 90px;
    height: 90px;
    background: var(--elevated);
    border: 2px solid var(--border);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    animation: none;
}

.reset-play-btn svg {
    width: 38px;
    height: 38px;
    stroke: var(--text-dim);
}

.reset-play-btn:hover svg {
    stroke: var(--text);
}

/* NOTIFICATION */
.notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    padding: 32px 56px;
    border-radius: 28px;
    font-size: 24px;
    font-weight: 700;
    z-index: 10000;
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    gap: 18px;
    box-shadow:
        0 24px 80px rgba(0, 0, 0, 0.7),
        0 0 100px var(--glow);
    white-space: nowrap;
}

.notification.show {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    animation: notifPulse 0.5s ease-in-out 3;
}

@keyframes notifPulse {
    0%,
    100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05);
    }
}

.notification svg {
    width: 36px;
    height: 36px;
}

/* SETTINGS PANEL */
.settings {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    padding: 20px;
}

.settings.show {
    opacity: 1;
    pointer-events: all;
}

.settings-panel {
    background: var(--elevated);
    border: 1px solid var(--border);
    border-radius: 28px;
    width: 100%;
    max-width: 700px;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    animation: panelPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.9);
}

@keyframes panelPop {
    from {
        opacity: 0;
        transform: scale(0.85) translateY(50px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 32px 36px;
    border-bottom: 1px solid var(--border);
    background: var(--panel);
    border-radius: 28px 28px 0 0;
}

.panel-header h2 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.close-btn {
    background: var(--elevated);
    border: 1px solid var(--border);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 22px;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close-btn:hover {
    transform: rotate(90deg) scale(1.1);
    color: var(--text);
    border-color: var(--accent);
}

.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px 36px;
}

.settings-section {
    margin-bottom: 44px;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h3 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 22px;
}

/* THEME GRID */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 14px;
}

.theme-card {
    background: var(--panel);
    border: 2px solid var(--border);
    padding: 16px;
    border-radius: 14px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.theme-card.active {
    border-color: var(--accent);
    background: var(--accent);
    color: white;
    box-shadow: 0 10px 30px var(--glow);
}

.theme-swatch {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.ocean-swatch {
    background: linear-gradient(135deg, #5b8fd9, #4a7dc8);
}
.sunset-swatch {
    background: linear-gradient(135deg, #ff6b6b, #ffa502);
}
.forest-swatch {
    background: linear-gradient(135deg, #66bb6a, #43a047);
}
.lavender-swatch {
    background: linear-gradient(135deg, #ba68c8, #9c27b0);
}
.midnight-swatch {
    background: linear-gradient(135deg, #58a6ff, #1f6feb);
}
.rose-swatch {
    background: linear-gradient(135deg, #fb7185, #ec4899);
}
.candy-swatch {
    background: linear-gradient(135deg, #f66d9d, #e64980);
}
.gold-swatch {
    background: linear-gradient(135deg, #ffd700, #e6be00);
}
.slate-swatch {
    background: linear-gradient(135deg, #6c7a89, #566573);
}
.cherry-swatch {
    background: linear-gradient(135deg, #dc143c, #c01030);
}
.mint-swatch {
    background: linear-gradient(135deg, #00b894, #00a381);
}
.tangerine-swatch {
    background: linear-gradient(135deg, #ff8c42, #e67a2e);
}
.custom-swatch {
    background: conic-gradient(red, yellow, lime, cyan, blue, magenta, red);
}
.nebula-swatch {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
}
.autumn-swatch {
    background: linear-gradient(135deg, #d97706, #b45309);
}
.arctic-swatch {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}
.neon-swatch {
    background: linear-gradient(135deg, #10b981, #059669);
}
.coffee-swatch {
    background: linear-gradient(135deg, #a16207, #854d0e);
}
.plum-swatch {
    background: linear-gradient(135deg, #a855f7, #9333ea);
}
.coral-swatch {
    background: linear-gradient(135deg, #f97316, #ea580c);
}

.theme-card span {
    font-size: 14px;
    font-weight: 600;
}

/* TOGGLE SETTINGS */
.toggle-row {
    margin-bottom: 14px;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 18px 20px;
    background: var(--panel);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.toggle-label:hover {
    background: var(--elevated);
    border-color: var(--border);
    transform: translateX(4px);
}

.toggle-label input {
    display: none;
}

.toggle-switch {
    width: 56px;
    height: 32px;
    background: var(--elevated);
    border: 2px solid var(--border);
    border-radius: 9999px;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.toggle-switch::before {
    content: "";
    position: absolute;
    width: 24px;
    height: 24px;
    background: var(--text-dim);
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.toggle-label input:checked + .toggle-switch {
    background: var(--accent);
    border-color: var(--accent);
}

.toggle-label input:checked + .toggle-switch::before {
    left: 26px;
    background: white;
}

.toggle-info {
    flex: 1;
}

.toggle-info strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 3px;
}

.toggle-info small {
    font-size: 13px;
    color: var(--text-dim);
}

/* SLIDERS */
.slider-box {
    margin: 18px 0;
}

.slider-box label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 14px;
}

.slider-label-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.vol-icon {
    width: 20px;
    height: 20px;
    color: var(--accent);
    flex-shrink: 0;
}

.slider-box span:last-child {
    color: var(--accent);
    font-family: var(--mono);
}

input[type="range"] {
    width: 100%;
    height: 10px;
    border-radius: 9999px;
    background: var(--elevated);
    border: 1px solid var(--border);
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

input[type="range"]:hover {
    border-color: var(--accent);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    cursor: pointer;
    box-shadow: 0 4px 14px var(--glow);
    transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 6px 20px var(--glow);
}

input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 14px var(--glow);
    transition: all 0.3s ease;
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 6px 20px var(--glow);
}

/* PANEL FOOTER */
.panel-footer {
    display: flex;
    gap: 14px;
    padding: 28px 36px;
    border-top: 1px solid var(--border);
    background: var(--panel);
    border-radius: 0 0 28px 28px;
}

.btn-primary,
.btn-secondary {
    flex: 1;
    padding: 16px 28px;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: 0 8px 24px var(--glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px var(--glow);
}

.btn-secondary {
    background: var(--elevated);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--panel);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* CUSTOM THEME EDITOR */
.theme-editor {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: var(--panel);
    border-radius: 16px;
    border: 1px solid var(--border);
    animation: fadeSlideIn 0.3s ease;
}

.theme-editor.open {
    display: block;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.theme-editor h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.color-picker-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 18px;
}

.color-picker-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.color-picker-item label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.color-picker-item input[type="color"] {
    width: 100%;
    height: 42px;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--elevated);
    cursor: pointer;
    padding: 2px;
    -webkit-appearance: none;
    appearance: none;
}

.color-picker-item input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-picker-item input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 8px;
}

.theme-editor-actions {
    display: flex;
    gap: 10px;
}

.theme-editor-actions button {
    flex: 1;
    padding: 12px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.theme-editor-actions .btn-apply {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
}

.theme-editor-actions .btn-apply:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--glow);
}

.theme-editor-actions .btn-cancel {
    background: var(--elevated);
    color: var(--text);
    border: 1px solid var(--border);
}

.theme-editor-actions .btn-cancel:hover {
    background: var(--panel);
    border-color: var(--accent);
}

/* SCROLLBAR */
.panel-content::-webkit-scrollbar,
.lap-list::-webkit-scrollbar {
    width: 8px;
}

.panel-content::-webkit-scrollbar-track,
.lap-list::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 10px;
}

.panel-content::-webkit-scrollbar-thumb,
.lap-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}

.panel-content::-webkit-scrollbar-thumb:hover,
.lap-list::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* RUNNING ANIMATION */
body.running .time-input {
    animation: timeGlow 2s ease-in-out infinite;
}

@keyframes timeGlow {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.75;
    }
}

body.running .ring-svg {
    animation: ringRunning 1s ease-in-out infinite;
}

@keyframes ringRunning {
    0%,
    100% {
        filter: drop-shadow(0 0 20px var(--glow)) brightness(1);
    }
    50% {
        filter: drop-shadow(0 0 40px var(--glow))
            drop-shadow(0 0 60px var(--glow)) brightness(1.1);
    }
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .tab-btn {
        min-width: 75px;
        padding: 10px 20px;
    }
    .tab-btn svg {
        width: 22px;
        height: 22px;
    }
    .tab-btn span {
        font-size: 11px;
    }
    .action-btn {
        min-width: 65px;
        padding: 8px 14px;
    }
    .action-btn svg {
        width: 18px;
        height: 18px;
    }
    .action-btn span {
        font-size: 10px;
    }
    .panel-header,
    .panel-content,
    .panel-footer {
        padding-left: 24px;
        padding-right: 24px;
    }
    .theme-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
    .play-btn,
    .reset-play-btn {
        width: 90px;
        height: 90px;
    }
    .play-btn svg,
    .reset-play-btn svg {
        width: 38px;
        height: 38px;
    }
    .reset-play-btn {
        width: 74px;
        height: 74px;
    }
    .reset-play-btn svg {
        width: 30px;
        height: 30px;
    }
    .notification {
        padding: 24px 36px;
        font-size: 20px;
    }
    .settings-panel {
        max-height: 96vh;
        border-radius: 20px;
    }
    .panel-header {
        padding: 24px 24px;
        border-radius: 20px 20px 0 0;
    }
    .panel-header h2 {
        font-size: 24px;
    }
    .panel-footer {
        padding: 20px 24px;
        border-radius: 0 0 20px 20px;
    }
}

@media (max-width: 480px) {
    .nav {
        flex-direction: column;
        align-items: stretch;
    }
    .nav-tabs {
        justify-content: center;
    }
    .nav-actions {
        justify-content: center;
    }
    .presets {
        gap: 12px;
    }
    .preset-group {
        width: 100%;
        justify-content: center;
    }
    .play-zone {
        padding: 20px;
        gap: 16px;
    }
    .ring {
        width: clamp(280px, 85vw, 340px);
        height: clamp(280px, 85vw, 340px);
    }
}

/* ─── COLOR WHEEL MODAL ────────────────────────────────────── */

.color-wheel-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    padding: 20px;
}

.color-wheel-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.color-wheel-modal {
    background: var(--elevated);
    border: 1px solid var(--border);
    border-radius: 28px;
    width: 100%;
    max-width: 520px;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    animation: panelPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.9);
    overflow: hidden;
}

.color-wheel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border);
    background: var(--panel);
}

.color-wheel-header h3 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.color-wheel-body {
    padding: 28px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.cw-top {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.cw-wheel-wrap {
    position: relative;
    flex-shrink: 0;
}

#cwWheel {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    cursor: crosshair;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    display: block;
}

.cw-sliders {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.cw-slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cw-slider-row label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    min-width: 20px;
}

.cw-slider-track {
    position: relative;
    flex: 1;
    height: 24px;
    border-radius: 12px;
    cursor: pointer;
    border: 1px solid var(--border);
    overflow: hidden;
}

.cw-slider-track .cw-slider-fill {
    position: absolute;
    inset: 0;
    border-radius: 12px;
}

.cw-slider-thumb {
    position: absolute;
    top: 50%;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border);
    transform: translate(-50%, -50%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    z-index: 2;
}

.cw-preview-section {
    display: flex;
    gap: 24px;
    align-items: center;
}

.cw-preview {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    border: 2px solid var(--border);
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    transition: background 0.15s ease;
}

.cw-values {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.cw-value {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cw-value span {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.cw-value input {
    font-family: var(--mono);
    font-size: 12px;
    padding: 6px 8px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    width: 100%;
    outline: none;
    transition: border-color 0.2s ease;
}

.cw-value input:focus {
    border-color: var(--accent);
}

.color-wheel-footer {
    display: flex;
    gap: 12px;
    padding: 20px 28px;
    border-top: 1px solid var(--border);
    background: var(--panel);
}

.color-wheel-footer button {
    flex: 1;
    padding: 14px 24px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: none;
}

.cw-btn-apply {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: 0 8px 24px var(--glow);
}

.cw-btn-apply:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px var(--glow);
}

.cw-btn-cancel {
    background: var(--elevated);
    color: var(--text);
    border: 1px solid var(--border) !important;
}

.cw-btn-cancel:hover {
    background: var(--panel);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* Color wheel picker row in theme editor */
.cw-trigger-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.cw-trigger-row label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    min-width: 70px;
}

.cw-trigger-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    border-radius: 10px;
    border: 2px solid var(--border);
    background: var(--elevated);
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
}

.cw-trigger-btn:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.cw-trigger-swatch {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.cw-trigger-btn span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    font-family: var(--mono);
}

.cw-trigger-btn .cw-wheel-icon {
    margin-left: auto;
    width: 20px;
    height: 20px;
    color: var(--accent);
}

/* ─── AUDIO URL INPUT ──────────────────────────────────────── */

.audio-url-box {
    margin-top: 16px;
    padding: 16px 18px;
    background: var(--panel);
    border-radius: 14px;
    border: 1px solid var(--border);
}

.audio-url-box label {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.audio-url-box .audio-url-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 8px;
}

.audio-url-input-row {
    display: flex;
    gap: 8px;
}

.audio-url-input-row input[type="text"] {
    flex: 1;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--elevated);
    color: var(--text);
    font-size: 14px;
    font-family: var(--mono);
    outline: none;
    transition: border-color 0.2s ease;
}

.audio-url-input-row input[type="text"]:focus {
    border-color: var(--accent);
}

.audio-url-input-row input[type="text"]::placeholder {
    color: var(--text-dim);
    opacity: 0.6;
}

.audio-url-btn {
    padding: 10px 16px;
    border-radius: 10px;
    border: none;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.audio-url-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--glow);
}

.audio-url-status {
    font-size: 12px;
    color: var(--text-dim);
    margin-top: 6px;
    min-height: 18px;
}

.audio-url-status.success {
    color: var(--accent);
}

.audio-url-status.error {
    color: #ef4444;
}

@media (max-width: 480px) {
    .cw-top {
        flex-direction: column;
        align-items: center;
    }
    .cw-preview-section {
        flex-direction: column;
        align-items: center;
    }
    .cw-values {
        width: 100%;
    }
    #cwWheel {
        width: 160px;
        height: 160px;
    }
}