/* Glassmorphism Theme System with White/Black Light-Dark Mode */

/* Global System Variables */
:root {
    --blur-backdrop: 25px;
    --saturate: 180%;
    --animations-enabled: 1;
    --transition-duration: 0.3s;
    --levitation-distance: 8px;
    --levitation-duration: 0.3s;
    --haptic-scale: 0.97;

    /* Light Mode Defaults */
    --bg-primary: #f8f8f8;
    --bg-secondary: rgba(255, 255, 255, 0.72);
    --bg-tertiary: #f0f0f0;
    --bg: #f8f8f8;
    --surface: rgba(255, 255, 255, 0.65);
    --surface-dark: rgba(245, 245, 245, 0.64);
    --border: rgba(255, 255, 255, 0.35);
    --glass-border: rgba(255, 255, 255, 0.35);
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-dark: rgba(0, 0, 0, 0.14);
    --hover-glow: 0 12px 30px rgba(0, 0, 0, 0.14), 0 0 22px rgba(255, 255, 255, 0.08);
    --fg: #101010;
    --fg-muted: #575757;
    --fg-subtle: #7a7a7a;
    --dim: #4f4f4f;
    --accent: #000000;
    --button-text: #f8f8f8;
    --accent-light: #1a1a1a;
    --accent-dark: #0a0a0a;
    --liquid-color-1: rgba(0, 0, 0, 0.08);
    --liquid-color-2: rgba(0, 0, 0, 0.05);
    --liquid-color-3: rgba(0, 0, 0, 0.03);
}

:root[data-mode="dark"] {
    --bg-primary: #050505;
    --bg-secondary: rgba(15, 15, 20, 0.86);
    --bg-tertiary: #111111;
    --bg: #050505;
    --surface: rgba(15, 15, 20, 0.88);
    --surface-dark: rgba(20, 20, 26, 0.72);
    --border: rgba(255, 255, 255, 0.09);
    --glass-border: rgba(255, 255, 255, 0.09);
    --shadow: rgba(0, 0, 0, 0.55);
    --shadow-dark: rgba(0, 0, 0, 0.8);
    --hover-glow: 0 12px 30px rgba(255, 255, 255, 0.16), 0 0 22px rgba(255, 255, 255, 0.12);
    --fg: #f7f7f7;
    --fg-muted: #b5b5b5;
    --fg-subtle: #a0a0a0;
    --dim: #c2c2c2;
    --accent: #ffffff;
    --button-text: #050505;
    --accent-light: #f5f5f5;
    --accent-dark: #e9e9e9;
    --liquid-color-1: rgba(255, 255, 255, 0.12);
    --liquid-color-2: rgba(255, 255, 255, 0.08);
    --liquid-color-3: rgba(255, 255, 255, 0.04);
}

/* Liquid Flow Background Animation */
@keyframes liquidFlow {
    0%, 100% {
        transform: translate(-50%, -50%) rotate(0deg) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(-30%, -70%) rotate(90deg) scale(1.1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-70%, -30%) rotate(180deg) scale(0.9);
        opacity: 0.4;
    }
    75% {
        transform: translate(-40%, -60%) rotate(270deg) scale(1.05);
        opacity: 0.6;
    }
}

/* Liquid Background Container */
.liquid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--bg-primary);
    overflow: hidden;
}

.liquid-background::before,
.liquid-background::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    filter: blur(60px);
    animation: liquidFlow 30s ease-in-out infinite;
}

.liquid-background::before {
    top: 20%;
    left: 10%;
    background: radial-gradient(circle, var(--liquid-color-1), transparent);
}

.liquid-background::after {
    bottom: 20%;
    right: 15%;
    background: radial-gradient(circle, var(--liquid-color-2), transparent);
    animation-delay: 5s;
}

/* Glassmorphic Surface */
.glass-surface {
    background: var(--surface);
    backdrop-filter: blur(var(--blur-backdrop)) saturate(var(--saturate));
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 
        inset 0 1px 0 var(--border),
        0 8px 32px var(--shadow);
}

.glass-surface-alt {
    background: var(--surface-dark);
    backdrop-filter: blur(calc(var(--blur-backdrop) * 0.8)) saturate(var(--saturate));
    border: 1px solid var(--border);
    border-radius: 12px;
}

/* Control Cards */
.control-card {
    background: var(--surface);
    backdrop-filter: blur(var(--blur-backdrop)) saturate(var(--saturate));
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 
        inset 0 1px 0 var(--border),
        0 4px 16px var(--shadow);
}

.control-card:hover {
    transform: scale(1.02);
    background: rgba(var(--rgb-accent, 255, 123, 0), 0.05);
}

.control-card:active {
    transform: scale(0.97);
}

/* iOS-Style Toggle Switch */
.ios-toggle {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    cursor: pointer;
}

.ios-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(200, 200, 200, 0.3);
    border-radius: 14px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px) saturate(150%);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 22px;
    width: 22px;
    left: 3px;
    top: 2px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

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

.ios-toggle input:checked + .toggle-slider::before {
    transform: translateX(22px);
}

/* Theme Toggle Controls */
.theme-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.theme-option {
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--surface-dark);
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s;
    color: var(--fg);
}

.theme-option:hover {
    border-color: var(--accent);
    transform: scale(0.97);
}

.theme-option.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* Haptic Button Press */
button {
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

button:active {
    transform: scale(0.97);
}

/* Card Elements */
.card {
    background: var(--surface);
    backdrop-filter: blur(var(--blur-backdrop)) saturate(var(--saturate));
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 
        inset 0 1px 0 var(--border),
        0 8px 24px var(--shadow);
}

.card:active {
    transform: scale(0.97);
}

/* Modal Elements */
.auth-modal {
    background: var(--surface);
    backdrop-filter: blur(var(--blur-backdrop)) saturate(var(--saturate));
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 
        inset 0 1px 0 var(--border),
        0 20px 60px var(--shadow);
}

/* Input Fields */
.auth-field input {
    background: var(--surface-dark);
    border: 1px solid var(--border);
    color: var(--fg);
    backdrop-filter: blur(10px);
}

.auth-field input:focus {
    background: var(--surface);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--rgb-accent, 255, 123, 0), 0.1);
}

/* Button Primary */
.btn-fill {
    background: var(--accent);
    color: var(--button-text);
    border: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-fill:active {
    transform: scale(0.97);
}

/* Button Secondary */
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--fg);
    backdrop-filter: blur(10px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-ghost:active {
    transform: scale(0.97);
}

/* Text Colors */
body {
    background: var(--bg-primary);
    color: var(--fg);
}

.nav-link {
    color: var(--fg-muted);
}

.wordmark {
    color: var(--fg);
}

.tag {
    color: var(--fg-muted);
}

.sub {
    color: var(--fg-muted);
}

/* Accent Colors */
.accent {
    color: var(--accent);
}

.status-dot {
    background: var(--accent);
}

/* Loading Spinner Animation */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    animation: spin 1.2s linear infinite;
}

/* Transition for Theme Changes */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Media Queries */
@media (max-width: 600px) {
    .liquid-background::before,
    .liquid-background::after {
        width: 200px;
        height: 200px;
        filter: blur(40px);
    }

    .control-card {
        padding: 16px;
    }

    .glass-surface {
        border-radius: 12px;
    }
}