/* ================================================
   PulseFocus Landing Page - Design System CSS
   ================================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-bg: #000000;
    --color-surface: rgba(255, 255, 255, 0.06);
    --color-surface-elevated: rgba(255, 255, 255, 0.08);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.15);

    /* Text */
    --color-text: #FFFFFF;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-tertiary: rgba(255, 255, 255, 0.5);
    --color-text-muted: rgba(255, 255, 255, 0.4);
    --color-text-disabled: rgba(255, 255, 255, 0.3);

    /* Accents */
    --color-accent: #FFFFFF;
    --color-premium: #FFD60A;
    --color-premium-alt: #FF9500;

    /* Feature colors */
    --color-red: #FF3B30;
    --color-green: #32D74B;
    --color-blue: #007AFF;
    --color-purple: #AF52DE;
    --color-cyan: #00D4FF;
    --color-orange: #FF9500;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 20px;
    --space-2xl: 24px;
    --space-3xl: 32px;
    --space-4xl: 40px;
    --space-5xl: 50px;
    --space-6xl: 80px;
    --space-7xl: 120px;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-pill: 28px;
    --radius-full: 9999px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ================================================
   Navigation
   ================================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-lg) 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-icon {
    font-size: 24px;
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
    align-items: center;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-text);
}

/* ================================================
   Buttons
   ================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    padding: var(--space-lg) var(--space-2xl);
    border-radius: var(--radius-pill);
    border: none;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-primary:hover {
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
}

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

.btn-premium {
    background: var(--color-premium);
    color: var(--color-bg);
    box-shadow: 0 5px 20px rgba(255, 214, 10, 0.3);
    width: 100%;
    margin-top: var(--space-xl);
}

.btn-premium:hover {
    box-shadow: 0 5px 30px rgba(255, 214, 10, 0.5);
}

.btn-small {
    padding: var(--space-sm) var(--space-lg);
    font-size: 14px;
}

.btn-large {
    padding: var(--space-xl) var(--space-3xl);
    font-size: 18px;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ================================================
   Hero Section
   ================================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--space-6xl);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5xl);
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.hero-title {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-premium), var(--color-premium-alt));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-3xl);
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 214, 10, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

/* Timer Mockup */
.timer-mockup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2xl);
}

.timer-ring {
    position: relative;
    width: 280px;
    height: 280px;
}

.timer-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.timer-bg {
    fill: none;
    stroke: var(--color-surface);
    stroke-width: 8;
}

.timer-progress {
    fill: none;
    stroke: var(--color-text);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 565.48;
    stroke-dashoffset: 141.37;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.3));
    }

    50% {
        filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.5));
    }
}

.timer-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.timer-time {
    display: block;
    font-size: 48px;
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    letter-spacing: -1px;
}

.timer-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
    color: var(--color-text-muted);
}

.timer-sessions {
    display: flex;
    gap: var(--space-sm);
}

.session-dot {
    width: 32px;
    height: 5px;
    border-radius: 3px;
    background: var(--color-surface);
}

.session-dot.active {
    background: var(--color-text);
}

/* ================================================
   Features Section
   ================================================ */
.features {
    padding: var(--space-7xl) 0;
}

.section-header {
    margin-bottom: var(--space-5xl);
}

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

.section-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    position: relative;
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card[data-color="cyan"] .feature-icon {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.25), rgba(0, 212, 255, 0.1));
    color: var(--color-cyan);
}

.feature-card[data-color="red"] .feature-icon {
    background: linear-gradient(135deg, rgba(255, 59, 48, 0.25), rgba(255, 59, 48, 0.1));
    color: var(--color-red);
}

.feature-card[data-color="green"] .feature-icon {
    background: linear-gradient(135deg, rgba(50, 215, 75, 0.25), rgba(50, 215, 75, 0.1));
    color: var(--color-green);
}

.feature-card[data-color="purple"] .feature-icon {
    background: linear-gradient(135deg, rgba(175, 82, 222, 0.25), rgba(175, 82, 222, 0.1));
    color: var(--color-purple);
}

.feature-card[data-color="orange"] .feature-icon {
    background: linear-gradient(135deg, rgba(255, 149, 0, 0.25), rgba(255, 149, 0, 0.1));
    color: var(--color-orange);
}

.feature-card[data-color="blue"] .feature-icon {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.25), rgba(0, 122, 255, 0.1));
    color: var(--color-blue);
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-desc {
    font-size: 14px;
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

.feature-badge {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-xs) var(--space-sm);
    background: linear-gradient(135deg, var(--color-premium), var(--color-premium-alt));
    color: var(--color-bg);
    font-size: 10px;
    font-weight: 700;
    border-radius: var(--radius-sm);
}

/* ================================================
   Highlight Section (App Blocking)
   ================================================ */
.highlight {
    padding: var(--space-7xl) 0;
    background: linear-gradient(180deg, transparent, rgba(255, 59, 48, 0.03), transparent);
}

.highlight-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6xl);
    align-items: center;
}

.highlight-visual {
    display: flex;
    justify-content: center;
}

.blocking-demo {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3xl);
}

.blocked-apps {
    display: flex;
    gap: var(--space-lg);
}

.app-icon {
    position: relative;
    width: 64px;
    height: 64px;
    background: var(--color-surface-elevated);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.app-icon.blocked::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 59, 48, 0.3);
    border-radius: var(--radius-lg);
}

.block-overlay {
    position: absolute;
    font-size: 20px;
    z-index: 1;
}

.shield-icon {
    font-size: 80px;
    filter: drop-shadow(0 10px 30px rgba(255, 59, 48, 0.3));
}

.highlight-text .section-title {
    margin-bottom: var(--space-xl);
}

.highlight-desc {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.7;
}

.highlight-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.highlight-list li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 15px;
    color: var(--color-text-secondary);
}

.check-icon {
    color: var(--color-green);
    font-weight: 600;
}

/* ================================================
   Stats Preview
   ================================================ */
.stats-preview {
    padding: var(--space-7xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-5xl);
}

.stat-card {
    text-align: center;
    padding: var(--space-4xl) var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.stat-value {
    display: block;
    font-size: 56px;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, var(--color-text), var(--color-text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-tertiary);
}

/* ================================================
   Pricing Section
   ================================================ */
.pricing {
    padding: var(--space-7xl) 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-5xl);
    align-items: start;
}

.pricing-card {
    position: relative;
    padding: var(--space-3xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.pricing-card.featured {
    background: var(--color-surface-elevated);
    border-color: var(--color-premium);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: calc(-1 * var(--space-md));
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-xs) var(--space-lg);
    background: var(--color-premium);
    color: var(--color-bg);
    font-size: 12px;
    font-weight: 700;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
}

.pricing-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-xs);
}

.price {
    font-size: 40px;
    font-weight: 700;
}

.period {
    font-size: 16px;
    color: var(--color-text-tertiary);
}

.monthly-equiv {
    display: block;
    margin-top: var(--space-sm);
    font-size: 13px;
    color: var(--color-premium);
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.pricing-features li.disabled {
    color: var(--color-text-disabled);
}

.pricing-features .check {
    color: var(--color-green);
}

.pricing-features .x {
    color: var(--color-text-disabled);
}

/* ================================================
   CTA Section
   ================================================ */
.cta {
    padding: var(--space-7xl) 0;
    background: radial-gradient(ellipse at center, rgba(255, 214, 10, 0.08) 0%, transparent 60%);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.cta-subtitle {
    font-size: 18px;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-3xl);
}

/* ================================================
   Footer
   ================================================ */
.footer {
    padding: var(--space-5xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 18px;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: var(--space-2xl);
}

.footer-links a {
    font-size: 14px;
    color: var(--color-text-tertiary);
    transition: color 0.2s ease;
}

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

.footer-copyright {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* ================================================
   Responsive
   ================================================ */
@media (max-width: 1024px) {

    .features-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-card.featured {
        transform: none;
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        margin-top: var(--space-3xl);
    }

    .timer-ring {
        width: 220px;
        height: 220px;
    }

    .timer-time {
        font-size: 36px;
    }

    .features-grid,
    .pricing-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .highlight-content {
        grid-template-columns: 1fr;
        gap: var(--space-4xl);
    }

    .highlight-visual {
        order: -1;
    }

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

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-lg);
    }

    .hero-title {
        font-size: 36px;
    }

    .btn-large {
        padding: var(--space-lg) var(--space-xl);
        font-size: 16px;
    }

    .stat-value {
        font-size: 40px;
    }
}

/* ================================================
   Animations
   ================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.fade-in-up.visible {
    opacity: 1;
}