/* Sleep Debt Recovery Planner - Complete Stylesheet */

:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #1e1e3a;
    --bg-input: #252545;
    --text-primary: #e8e8f0;
    --text-secondary: #b0b0c8;
    --text-muted: #7878a0;
    --accent-primary: #7b8cff;
    --accent-secondary: #ffd166;
    --accent-glow: rgba(123, 140, 255, 0.2);
    --border-color: #2a2a4a;
    --success: #6fcf97;
    --warning: #f2c94c;
    --danger: #eb5757;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'Cascadia Code', 'Fira Code', monospace;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

.logo svg {
    flex-shrink: 0;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: 0.95rem;
    font-weight: 500;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.main-nav a.active {
    color: var(--accent-primary);
}

/* Hero */
.hero {
    padding: 4rem 0 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(123, 140, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 50%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.hero-moon {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Planner Tool */
.planner-tool {
    padding: 3rem 0;
}

.planner-tool h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-align: center;
}

.tool-intro {
    text-align: center;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.recovery-form {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 550px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: var(--shadow-card);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.form-group input {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, #5a6ae0 100%);
    color: #fff;
    border: none;
    padding: 0.9rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-smooth);
    letter-spacing: 0.01em;
    box-shadow: 0 4px 15px rgba(123, 140, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(123, 140, 255, 0.45);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Results */
.results-container {
    margin-top: 2.5rem;
    transition: all var(--transition-smooth);
}

.results-container.hidden {
    display: none;
}

.results-header {
    text-align: center;
    margin-bottom: 2rem;
}

.results-header h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-primary);
}

#results-summary {
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.schedule-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.schedule-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.schedule-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.schedule-card .card-type {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.schedule-card .card-duration {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-secondary);
    line-height: 1.2;
}

.schedule-card .card-time {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.schedule-card .card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
    line-height: 1.5;
}

.results-tips {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.results-tips h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--accent-secondary);
}

.results-tips ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.results-tips li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.results-tips li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

/* Ad Section */
.ad-section {
    padding: 1.5rem 0;
    text-align: center;
}

.ad-section .container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 120px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--border-color);
}

/* How It Works */
.how-it-works {
    padding: 4rem 0;
}

.how-it-works h2 {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.step-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: transform var(--transition-fast);
}

.step-card:hover {
    transform: translateY(-4px);
}

.step-icon {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
}

.step-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--accent-primary);
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Science Section */
.science-section {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
}

.science-section h2 {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.science-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.science-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.75;
}

/* FAQ */
.faq-section {
    padding: 4rem 0;
}

.faq-section h2 {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1rem;
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-item:hover {
    border-color: var(--accent-primary);
}

.faq-item summary {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.3rem;
    color: var(--accent-primary);
    font-weight: 700;
    transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-item p {
    margin-top: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Footer */
.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-disclaimer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    max-width: 600px;
    margin: 0 auto 1rem;
    line-height: 1.5;
}

.footer-copy {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* About Page */
.about-page {
    padding: 4rem 0;
}

.about-page h1 {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
}

/* Privacy & Terms Pages */
.legal-page {
    padding: 4rem 0;
}

.legal-page h1 {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
}

.legal-content {
    max-width: 750px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Responsive */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        align-items: flex-start;
    }

    .main-nav ul {
        gap: 0.2rem;
    }

    .main-nav a {
        padding: 0.4rem 0.75rem;
        font-size: 0.85rem;
    }

    .hero {
        padding: 3rem 0 2rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .recovery-form {
        padding: 1.5rem;
    }

    .schedule-cards {
        grid-template-columns: 1fr;
    }

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

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

    .about-content,
    .legal-content {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .btn-primary {
        font-size: 1rem;
        padding: 0.75rem 1.25rem;
    }

    .schedule-card .card-duration {
        font-size: 1.5rem;
    }
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}