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

:root {
    /* Colors - Vintage Theme */
    --primary-color: #C9A882;
    --secondary-color: #8B7355;
    --accent-color: #D4AF6A;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --bg-light: #fbfbfd;
    --bg-white: #ffffff;
    --border-color: #d2d2d7;

    /* Typography */
    --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-display: "SF Pro Display", -apple-system, sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;

    /* Effects */
    --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 32px rgba(0, 0, 0, 0.16);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-system);
    color: var(--text-primary);
    background-color: var(--bg-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(251, 251, 253, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 44px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.nav-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    opacity: 0.8;
    transition: var(--transition);
    padding: 8px 12px;
    border-radius: 6px;
}

.nav-menu a:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.05);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    padding-top: 120px;
    padding-bottom: var(--spacing-xxl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    min-height: calc(100vh - 44px);
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(48px, 6vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: clamp(20px, 2vw, 28px);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 980px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease-out;
}

.phone-mockup {
    position: relative;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 9 / 19.5;
    background: linear-gradient(135deg, #D4AF6A 0%, #C9A882 50%, #B89968 100%);
    border-radius: 50px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(201, 168, 130, 0.3);
}

.mockup-screen {
    width: 100%;
    height: 100%;
    border-radius: 40px;
    object-fit: cover;
    background: var(--bg-white);
}

/* ===== Features Section ===== */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-white);
}

.section-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -1.5px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: clamp(18px, 2vw, 24px);
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-lg);
    background: var(--bg-light);
    border-radius: 24px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-color);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
}

/* ===== Gallery Section ===== */
.gallery {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-light);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 9 / 16;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: var(--spacing-md);
    color: white;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay p {
    font-size: 18px;
    font-weight: 500;
}

/* ===== Download Section ===== */
.download {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
}

.download .section-title,
.download .section-subtitle {
    color: white;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.store-button {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: white;
    text-decoration: none;
    transition: var(--transition);
    min-width: 200px;
}

.store-button:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.store-button svg {
    width: 32px;
    height: 32px;
}

.store-button div {
    text-align: left;
}

.store-button small {
    display: block;
    font-size: 11px;
    opacity: 0.8;
}

.store-button strong {
    display: block;
    font-size: 18px;
    font-weight: 600;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-primary);
    color: #f5f5f7;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-section p {
    font-size: 14px;
    color: #a1a1a6;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #a1a1a6;
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    color: #a1a1a6;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
        padding-top: 100px;
    }

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

    .hero-image {
        order: -1;
    }

    .phone-mockup {
        max-width: 320px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 32px;
        --spacing-xl: 48px;
        --spacing-xxl: 64px;
    }

    .nav-menu {
        position: fixed;
        top: 44px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: var(--spacing-sm);
        width: 100%;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding-top: 80px;
        min-height: auto;
    }

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

    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .store-button {
        width: 100%;
        max-width: 300px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--spacing-sm);
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }

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

    .hero-subtitle {
        font-size: 18px;
    }

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

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

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .phone-mockup {
        max-width: 280px;
    }

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

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #8B6914;
        --secondary-color: #5C4A0A;
    }
}