/**
 * PFAD: /css/landing.css
 * Version: 1.0.0
 * Marketing Landing Page - DayDO Style
 */

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

:root {
    --color-primary: #6200EE;
    --color-primary-light: #7C4DFF;
    --color-primary-bg: #F3E5F5;
    --color-success: #4CAF50;
    --text-primary: #212121;
    --text-secondary: #666;
    --text-tertiary: #999;
    --bg-primary: #F7F7F7;
    --bg-secondary: #fff;
    --border-color: #eee;
    --shadow-soft: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(98,0,238,0.15);
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.6;
}

.landing-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    z-index: 1000;
    box-shadow: var(--shadow-soft);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.nav-logo {
    width: 36px;
    height: 36px;
    background: var(--color-primary-bg);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.nav-name {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn-nav {
    background: var(--color-primary);
    color: #fff;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-nav:hover {
    background: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
}

/* Hero Section */
.hero-section {
    padding-top: 120px;
    padding-bottom: 80px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: var(--color-primary-bg);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    padding: 16px 32px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    box-shadow: 0 8px 30px rgba(98,0,238,0.3);
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(98,0,238,0.4);
}

.btn-primary.btn-lg {
    padding: 18px 40px;
    font-size: 18px;
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 16px 32px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    box-shadow: var(--shadow-soft);
    transition: all 0.2s;
}

.btn-secondary:hover {
    box-shadow: var(--shadow-lg);
}

.hero-note {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: 16px;
}

/* Phone Mockup */
.hero-phone {
    display: flex;
    justify-content: center;
}

.phone-frame {
    width: 320px;
    background: linear-gradient(145deg, #ffffff, #f0e8ff);
    border-radius: 32px;
    padding: 16px;
    box-shadow: var(--shadow-lg);
}

.phone-frame > * {
    background: var(--bg-secondary);
    border-radius: 24px;
    padding: 16px;
}

.phone-header {
    margin-bottom: 12px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
}

.phone-tagline {
    font-size: 12px;
    color: var(--text-tertiary);
    width: 100%;
}

.phone-title {
    font-size: 15px;
    font-weight: 600;
    flex: 1;
}

.phone-streak {
    font-size: 12px;
    padding: 4px 10px;
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    color: #fff;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.phone-task {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 12px;
    margin-bottom: 10px;
}

.phone-task-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.phone-task-title {
    font-size: 14px;
    font-weight: 500;
}

.phone-pill {
    font-size: 11px;
    padding: 4px 10px;
    background: var(--color-primary-bg);
    color: var(--color-primary);
    border-radius: var(--radius-full);
}

.phone-task-meta {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--text-tertiary);
}

.phone-points {
    color: var(--color-success);
    font-weight: 600;
}

.phone-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.phone-link {
    color: var(--color-primary);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 560px;
    margin-bottom: 48px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-soft);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary-bg);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* How Grid */
.how-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.how-content .section-subtitle {
    margin-bottom: 32px;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 28px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border-color);
}

.timeline-step {
    position: relative;
    padding-bottom: 24px;
}

.timeline-step:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -24px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--color-primary);
}

.timeline-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
}

.timeline-text {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Balance Card */
.balance-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-soft);
}

.balance-badge {
    display: inline-block;
    font-size: 12px;
    padding: 6px 12px;
    background: var(--color-primary-bg);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-weight: 500;
    margin-bottom: 16px;
}

.balance-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.balance-text {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.balance-list {
    list-style: none;
}

.balance-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.balance-list li:last-child {
    margin-bottom: 0;
}

.balance-icon {
    font-size: 20px;
    width: 32px;
    text-align: center;
}

.balance-list strong {
    display: block;
    font-size: 14px;
    margin-bottom: 2px;
}

.balance-list span {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* CTA Section */
.cta-section {
    padding: 80px 0 100px;
}

.cta-card {
    background: linear-gradient(135deg, #6200EE 0%, #9C4DFF 100%);
    border-radius: 28px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 12px 40px rgba(98,0,238,0.3);
}

.cta-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #fff;
}

.cta-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 32px;
}

.cta-card .btn-primary {
    background: #fff;
    color: var(--color-primary);
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}

.cta-card .btn-primary:hover {
    background: #f5f5f5;
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.cta-note {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-top: 16px;
}

/* Footer */
.landing-footer {
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    font-size: 13px;
    color: var(--text-tertiary);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-tertiary);
    text-decoration: none;
}

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

/* Responsive */
@media (max-width: 900px) {
    .hero-grid,
    .how-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 32px;
    }

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

    .nav-links {
        display: none;
    }
}

@media (max-width: 600px) {
    .hero-section {
        padding-top: 100px;
        padding-bottom: 60px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }

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

    .section-title {
        font-size: 26px;
    }

    .cta-card {
        padding: 40px 24px;
    }

    .cta-title {
        font-size: 24px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}