/* ========================================
   Hold Steady - Redesigned Home Page
   Light & Dark Themes
   ======================================== */

/* ========================================
   CSS Variables - Dark Theme (Default)
   ======================================== */
:root,
:root[data-theme="dark"] {
    /* Dark theme colors */
    --bg-deep: #0a0e17;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --glow-primary: #6366f1;
    --glow-soft: rgba(99, 102, 241, 0.15);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-subtle: rgba(99, 102, 241, 0.15);

    /* Legacy mappings for compatibility */
    --color-bg-primary: #0a0e17;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #1a2332;
    --color-text-primary: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-accent-primary: #6366f1;
    --color-accent-warm: #6366f1;
    --color-accent-calm: #6366f1;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

    /* Canvas opacity */
    --canvas-opacity: 0.2;
}

/* ========================================
   Light Theme
   ======================================== */
:root[data-theme="light"] {
    /* Light theme colors */
    --bg-deep: #fef6e4;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f9fa;
    --glow-primary: #6366f1;
    --glow-soft: rgba(99, 102, 241, 0.08);
    --text-primary: #2d2d2d;
    --text-secondary: #5a5a5a;
    --text-muted: #8a8a8a;
    --border-subtle: rgba(99, 102, 241, 0.12);

    /* Legacy mappings for compatibility */
    --color-bg-primary: #fef6e4;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f8f9fa;
    --color-text-primary: #2d2d2d;
    --color-text-secondary: #5a5a5a;
    --color-text-muted: #8a8a8a;
    --color-accent-primary: #6366f1;
    --color-accent-warm: #6366f1;
    --color-accent-calm: #6366f1;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);

    /* Canvas opacity */
    --canvas-opacity: 0.15;
}

/* ========================================
   Typography & Spacing
   ======================================== */
:root {
    --spacing-xs: 0.4rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1rem;
    --spacing-xl: 2rem;

    --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-serif: 'Cormorant Garamond', serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    --font-size-2xl: 28px;

    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 14px;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* ========================================
   Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    font-family: var(--font-family);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100%;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ========================================
   Background Gradient
   ======================================== */
.bg-gradient {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 0%, var(--glow-soft) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(79, 70, 229, 0.05) 0%, transparent 40%),
        var(--bg-deep);
    z-index: 0;
    transition: background var(--transition-normal);
}

/* ========================================
   Container
   ======================================== */
.container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem;
}

.main-content {
    padding-top: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

/* ========================================
   Header Bar
   ======================================== */
.header-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 1.5rem;
    margin-left: -1.5rem;
    margin-right: -1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

:root[data-theme="light"] .header-bar {
    background: rgba(254, 246, 228, 0.95);
}

.logo {
    font-family: var(--font-family-serif);
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.header-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border-subtle);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.header-btn:hover {
    border-color: var(--glow-primary);
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.1);
}

.header-btn svg {
    width: 18px;
    height: 18px;
}

/* ========================================
   Hero Section with Mini Orb
   ======================================== */
.hero-section {
    text-align: center;
    padding: 2rem 0 2.5rem;
    position: relative;
    animation: fadeUp 0.5s ease-out;
}

/* Mini breathing orb */
.mini-orb-container {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
}

.mini-orb-glow {
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, transparent 70%);
    animation: breathe 4s ease-in-out infinite;
    filter: blur(8px);
}

.mini-orb-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(99, 102, 241, 0.4);
    animation: breathe 4s ease-in-out infinite;
}

.mini-orb-inner {
    position: absolute;
    inset: 8px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.15), transparent 60%);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* Mini waveform inside orb */
.mini-waveform {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
}

.mini-wave-bar {
    width: 3px;
    background: var(--glow-primary);
    border-radius: 2px;
    animation: waveBar 1.2s ease-in-out infinite;
}

.mini-wave-bar:nth-child(1) { height: 12px; animation-delay: 0s; }
.mini-wave-bar:nth-child(2) { height: 20px; animation-delay: 0.15s; }
.mini-wave-bar:nth-child(3) { height: 16px; animation-delay: 0.3s; }
.mini-wave-bar:nth-child(4) { height: 22px; animation-delay: 0.45s; }
.mini-wave-bar:nth-child(5) { height: 14px; animation-delay: 0.6s; }

@keyframes waveBar {
    0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
    50% { transform: scaleY(1); opacity: 1; }
}

@keyframes breathe {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.08); opacity: 1; }
}

.hero-tagline {
    font-family: var(--font-family-serif);
    font-size: 1.35rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.hero-title {
    font-family: var(--font-family-serif);
    font-size: 1.65rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.3;
}

/* ========================================
   Categories Grid
   ======================================== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.875rem;
}

@media (min-width: 640px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
}

@media (min-width: 900px) {
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1rem;
    }
}

@media (min-width: 1200px) {
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.25rem;
    }
}

.category-card {
    background: var(--bg-card);
    border: 1px solid transparent;
    border-radius: 16px;
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    position: relative;
    overflow: hidden;
    animation: fadeUp 0.4s ease-out backwards;
    min-height: 140px;
    display: flex;
    flex-direction: column;
}

/* Ensure child elements don't block clicks */
.category-card * {
    pointer-events: none;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.15s; }
.category-card:nth-child(3) { animation-delay: 0.2s; }
.category-card:nth-child(4) { animation-delay: 0.25s; }
.category-card:nth-child(5) { animation-delay: 0.3s; }
.category-card:nth-child(6) { animation-delay: 0.35s; }
.category-card:nth-child(7) { animation-delay: 0.4s; }
.category-card:nth-child(8) { animation-delay: 0.45s; }
.category-card:nth-child(9) { animation-delay: 0.5s; }
.category-card:nth-child(10) { animation-delay: 0.55s; }
.category-card:nth-child(11) { animation-delay: 0.6s; }

.category-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-subtle);
    transform: translateY(-2px);
}

.category-card:hover .card-waveform {
    opacity: 1;
}

.category-card:active {
    transform: translateY(0);
}

/* Subtle waveform icon on cards */
.card-waveform {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
    gap: 2px;
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.card-wave-bar {
    width: 2px;
    background: var(--glow-primary);
    border-radius: 1px;
}

.card-wave-bar:nth-child(1) { height: 6px; }
.card-wave-bar:nth-child(2) { height: 10px; }
.card-wave-bar:nth-child(3) { height: 8px; }
.card-wave-bar:nth-child(4) { height: 12px; }
.card-wave-bar:nth-child(5) { height: 7px; }

.category-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.category-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
    line-height: 1.3;
}

.category-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ========================================
   Beta Banner (Floating)
   ======================================== */
.beta-banner-floating {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-size: 0.7rem;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
    z-index: 100;
}

/* ========================================
   Settings Panel
   ======================================== */
.settings-dropdown {
    position: fixed;
    top: 4.5rem;
    right: 1rem;
    z-index: 60;
}

@media (min-width: 1200px) {
    .settings-dropdown {
        right: calc((100vw - 1200px) / 2 + 1rem);
    }
}

.settings-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    min-width: 280px;
    box-shadow: var(--shadow-lg);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.settings-panel.hidden {
    display: none;
}

.setting-item {
    margin-bottom: var(--spacing-md);
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.setting-item select {
    width: 100%;
    background: var(--bg-deep);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.setting-item select:hover {
    background: var(--bg-card-hover);
}

.setting-item input[type="range"] {
    width: 100%;
    height: 4px;
    background: var(--bg-deep);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
}

.setting-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--glow-primary);
    border-radius: 50%;
    cursor: pointer;
}

.setting-item input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--glow-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.range-with-value {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.range-with-value input[type="range"] {
    flex: 1;
}

.range-with-value span {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    min-width: 30px;
}

.secondary-btn {
    width: 100%;
    background: transparent;
    border: 1px solid var(--text-muted);
    border-radius: var(--border-radius-sm);
    color: var(--text-muted);
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-sm);
}

.secondary-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--text-primary);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Mobile Adjustments
   ======================================== */
@media (max-width: 639px) {
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .main-content {
        max-width: 100%;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 400px) {
    .header-bar {
        padding: 0.875rem 1rem;
        margin-left: -1rem;
        margin-right: -1rem;
    }

    .container {
        padding: 0 1rem 5rem;
    }

    .categories-grid {
        gap: 0.75rem;
    }

    .category-card {
        padding: 1rem;
    }

    .category-name {
        font-size: 0.875rem;
    }

    .mini-orb-container {
        width: 70px;
        height: 70px;
    }
}

/* ========================================
   Immersive Player Mode
   ======================================== */
.immersive-player {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease;
    background: var(--color-bg-primary);
}

.immersive-player.active {
    display: block;
    opacity: 1;
}

/* Background gradient */
.immersive-bg-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 30%, var(--color-accent-primary) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 80%, var(--color-accent-calm) 0%, transparent 40%);
    opacity: 0.2;
    z-index: 1;
}

.immersive-stars {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 2;
    pointer-events: none;
}

.immersive-star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    opacity: 0;
    animation: twinkle 4s ease-in-out infinite;
    box-shadow:
        0 0 2px rgba(255, 255, 255, 0.8),
        0 0 4px rgba(99, 102, 241, 0.4),
        0 0 6px rgba(99, 102, 241, 0.2);
}

@keyframes twinkle {
    0%, 100% {
        opacity: 0;
        transform: scale(1);
    }
    50% {
        opacity: var(--star-brightness, 0.8);
        transform: scale(1.2);
    }
}

/* Main container */
.immersive-container {
    position: relative;
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    z-index: 10;
}

/* Category label */
.immersive-category-label {
    position: absolute;
    top: 2rem;
    padding-top: 5px;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    opacity: var(--controls-opacity, 1);
    transition: opacity 0.8s ease;
}

/* The orb container */
.immersive-orb-container {
    position: relative;
    width: min(80vw, 360px);
    height: min(80vw, 360px);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Outer glow ring - more focused and organic */
.immersive-orb-glow {
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    opacity: 0.6;
    animation: breathe 4s ease-in-out infinite;
    filter: blur(20px);
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.08);
        opacity: 1;
    }
}

/* Main orb ring - lighter and more subtle */
.immersive-orb-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(99, 102, 241, 0.3);
    opacity: 1;
    animation: breathe 4s ease-in-out infinite;
}

/* Inner orb - more subtle gradient */
.immersive-orb-inner {
    position: absolute;
    inset: 20px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.08), transparent 60%);
    opacity: 1;
    border: 1px solid rgba(99, 102, 241, 0.15);
    animation: breathe 4s ease-in-out infinite;
    animation-delay: 0.5s;
}

/* Waveform canvas - blob morphing visualization */
.immersive-waveform-canvas {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    z-index: 3; /* Above orb rings, below mantra text */
    filter: blur(1px) drop-shadow(0 0 20px rgba(99, 102, 241, 0.6)) drop-shadow(0 0 40px rgba(99, 102, 241, 0.3));
    animation: blobSpin 20s linear infinite;
}

@keyframes blobSpin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Mantra rays container */
.immersive-mantra-rays {
    position: absolute;
    inset: -160px;
    pointer-events: none;
}

.immersive-ray {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 2px;
    height: 40px;
    background: linear-gradient(to top, transparent, var(--color-accent-primary), transparent);
    transform-origin: center center;
    opacity: 0;
    border-radius: 2px;
}

.immersive-ray.active {
    animation: rayShoot 3s ease-out forwards;
}

@keyframes rayShoot {
    0% {
        opacity: 0;
        transform: var(--ray-rotation) translateY(-140px);
    }
    8% {
        opacity: 0.6;
    }
    100% {
        opacity: 0;
        transform: var(--ray-rotation) translateY(-320px);
    }
}

/* Mantra text */
.immersive-mantra-text {
    position: relative;
    z-index: 5;
    font-family: var(--font-family-serif);
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    font-weight: 300;
    font-style: normal;
    line-height: 1.5;
    text-align: center;
    max-width: 280px;
    color: var(--color-text-primary);
    text-shadow: 0 0 40px var(--color-accent-primary);
    animation: textFade 0.8s ease-out;
}

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

/* Controls */
.immersive-controls {
    position: absolute;
    bottom: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    opacity: var(--controls-opacity, 1);
    transition: opacity 0.8s ease;
}

/* Secondary controls */
.immersive-secondary-controls {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.immersive-control-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.immersive-control-label {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.immersive-control-value {
    font-size: 0.85rem;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    border: 1px solid var(--color-accent-primary);
    border-opacity: 0.2;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 80px;
    text-align: center;
}

.immersive-control-value:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-accent-primary);
}

/* Tap hint */
.immersive-tap-hint {
    position: absolute;
    bottom: 1rem;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.immersive-container.idle .immersive-tap-hint {
    opacity: 0.5;
}

/* End session button - X icon in upper left */
.immersive-end-session {
    position: absolute;
    top: 1.25rem;
    left: 2rem;
    font-size: 2rem;
    line-height: 1;
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    opacity: var(--controls-opacity, 1);
    transition: all 0.3s ease;
    padding: 0.5rem;
    font-weight: 300;
}

.immersive-end-session:hover {
    color: var(--color-text-primary);
    transform: scale(1.1);
}

/* Idle state - fade controls */
.immersive-container.idle {
    --controls-opacity: 0;
}

/* Mobile optimizations */
@media (max-width: 480px) {
    .immersive-orb-container {
        width: 85vw;
        height: 85vw;
    }

    .immersive-controls {
        bottom: 2rem;
    }

    .immersive-secondary-controls {
        gap: 1rem;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}