/* =============================================
   Taskear — Landing Page Styles
   ============================================= */

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

:root {
    --color-bg: #FAFBFF;
    --color-surface: #FFFFFF;
    --color-text: #1A1A2E;
    --color-text-secondary: #6B7280;
    --color-primary: #4F6EF7;
    --color-primary-dark: #3B5BDB;
    --color-accent-pink: #FF6B9D;
    --color-accent-green: #4ECDC4;
    --color-accent-purple: #A78BFA;
    --color-accent-yellow: #FBBF24;
    --color-accent-red: #FF6B6B;
    --color-border: #E5E7EB;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

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

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-xl {
    padding: 18px 36px;
    font-size: 1.1rem;
    border-radius: var(--radius-lg);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-purple));
    color: #fff;
    box-shadow: 0 4px 16px rgba(79, 110, 247, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(79, 110, 247, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* --- Nav --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: all 0.3s ease;
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 0;
}

.nav-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo {
    width: 36px;
    height: 36px;
}

.nav-name {
    font-weight: 700;
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color 0.2s;
}

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

.nav-links .btn {
    color: #fff;
    background: var(--color-text);
}

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

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    top: -10%;
    right: -5%;
    opacity: 0.15;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--color-accent-pink);
    bottom: -5%;
    left: -5%;
    opacity: 0.12;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: var(--color-accent-yellow);
    top: 40%;
    left: 30%;
    opacity: 0.1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(79, 110, 247, 0.1);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-pink), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 480px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

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

.hero-icon-wrapper {
    position: relative;
}

.hero-icon {
    width: 320px;
    height: 320px;
    border-radius: 64px;
    filter: drop-shadow(0 30px 60px rgba(0,0,0,0.2));
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

/* --- Sections Common --- */
.section-header {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Features --- */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

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

/* --- Screenshots --- */
.screenshots {
    padding: 80px 0 100px;
    background: linear-gradient(180deg, transparent 0%, rgba(79, 110, 247, 0.03) 50%, transparent 100%);
}

.screenshots-wrapper {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.screenshot-card {
    position: relative;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 20px 20px 12px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 320px;
}

.screenshot-card:hover {
    transform: translateY(-8px) scale(1.02);
}

.screenshot-label {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

.screenshot-img {
    width: 100%;
    border-radius: var(--radius-md);
}

/* --- CTA --- */
.cta {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.cta-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.shape-4 {
    width: 600px;
    height: 600px;
    background: var(--color-accent-purple);
    top: -20%;
    left: -10%;
    opacity: 0.08;
}

.shape-5 {
    width: 500px;
    height: 500px;
    background: var(--color-accent-green);
    bottom: -20%;
    right: -10%;
    opacity: 0.08;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 32px;
    padding: 60px 40px;
    box-shadow: var(--shadow-lg);
}

.cta-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.cta-content h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 12px;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    margin-bottom: 16px;
}

.cta-note {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

/* --- Footer --- */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
}

.footer-logo {
    width: 28px;
    height: 28px;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* --- Scroll Animations --- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

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

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

    .hero-icon {
        width: 220px;
        height: 220px;
        border-radius: 48px;
    }

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

    .screenshots-wrapper {
        gap: 24px;
    }

    .screenshot-card {
        max-width: 280px;
    }

    .cta-content {
        padding: 40px 24px;
        border-radius: 24px;
    }

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

@media (max-width: 480px) {
    .nav-links a:not(.btn) {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg, .btn-xl {
        width: 100%;
        justify-content: center;
    }
}