/* CSS Custom Properties - Theme Colors */
:root {
    --color-primary: #ee2b5b;
    --color-primary-dark: #C2185B;
    --color-primary-light: #F48FB1;
    --color-background: #221015;
    --color-background-card: #271c1e;
    --color-background-secondary: #2D2D2D;
    --color-text: #FFFFFF;
    --color-text-secondary: #CCCCCC;
    --color-text-tertiary: #999999;
    --color-border: #3A3A3A;
    --color-border-light: #4A4A4A;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-xxl: 32px;
    --spacing-xxxl: 48px;
    
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 9999px;
    
    --transition-fast: 150ms ease-out;
    --transition-base: 300ms ease-out;
    --transition-slow: 600ms ease-out;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(238, 43, 91, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #1a0a0f 0%, #2d0f1a 25%, #3d1525 50%, #2d0f1a 75%, #1a0a0f 100%),
                radial-gradient(circle at 20% 50%, rgba(238, 43, 91, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(244, 143, 177, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 20%, rgba(194, 24, 91, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
    min-height: 100vh;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

/* Stagger animation delays */
.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(34, 16, 21, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-lg);
    min-height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
}

.nav-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
}

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

.nav-link {
    color: var(--color-text-secondary);
    font-size: 15px;
    transition: color var(--transition-base);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    color: var(--color-primary);
    font-weight: 600;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-base);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--spacing-lg) var(--spacing-xxxl);
    text-align: center;
    /* Background uses main body gradient */
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: clamp(32px, 6vw, 56px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xxxl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--color-primary);
    color: var(--color-text);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 44px;
    min-width: 140px;
    justify-content: center;
    will-change: transform;
}

.btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-glow);
    background-color: var(--color-primary-dark);
}

.btn:active {
    transform: translateY(0) scale(1);
}

.btn svg {
    width: 20px;
    height: 20px;
}

.btn-large {
    padding: var(--spacing-xl) var(--spacing-xxl);
    font-size: 18px;
    min-height: 60px;
}

.btn-large svg {
    width: 24px;
    height: 24px;
}

.btn-label {
    display: block;
    font-size: 12px;
    font-weight: 400;
    opacity: 0.9;
}

.btn-text {
    display: block;
    font-size: 18px;
    font-weight: 600;
}

/* Sections */
section {
    padding: var(--spacing-xxxl) 0;
}

.section-title {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 18px;
    margin-bottom: var(--spacing-xxxl);
}

/* Features Section */
.features {
    /* Background uses main body gradient */
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xxxl);
}

.feature-card {
    background-color: var(--color-background);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition-base);
    will-change: transform;
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xxxl);
}

.screenshot-item {
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition-base);
    will-change: transform;
}

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

.screenshot-image {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin: 0 auto var(--spacing-lg);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
}

.screenshot-item:hover .screenshot-image {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.screenshot-caption {
    color: var(--color-text-secondary);
    font-size: 16px;
    font-weight: 500;
}

/* How It Works Section */
.how-it-works {
    /* Background uses main body gradient */
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xxl);
    margin-top: var(--spacing-xxxl);
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-text);
    font-size: 28px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-glow);
    animation: scaleIn 0.6s ease-out;
}

.step-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.step-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Download Section */
.download {
    /* Background uses main body gradient */
    text-align: center;
}

.download-content {
    max-width: 700px;
    margin: 0 auto;
}

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

.download-description {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xxxl);
}

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

/* Footer */
.footer {
    /* Background uses main body gradient */
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xxxl) 0 var(--spacing-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--color-text-secondary);
    font-size: 14px;
    transition: color var(--transition-base);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

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

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-link-small {
    color: var(--color-text-tertiary);
    font-size: 14px;
    transition: color var(--transition-base);
}

.footer-link-small:hover {
    color: var(--color-text-secondary);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 48px;
    cursor: pointer;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-full);
    transition: background-color var(--transition-base);
    z-index: 2001;
}

.lightbox-close:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.lightbox-img {
    max-width: 90%;
    max-height: 90vh;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    animation: scaleIn 0.3s ease-out;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-background);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        border-top: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero {
        padding: 100px var(--spacing-lg) var(--spacing-xxl);
        min-height: auto;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .features-grid,
    .screenshots-grid,
    .steps {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .btn-large {
        width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-nav {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    section {
        padding: var(--spacing-xxl) 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .feature-card,
    .step {
        padding: var(--spacing-lg);
    }
    
    .screenshot-image {
        max-width: 100%;
    }
}

/* Tablet Responsive */
@media (min-width: 769px) and (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* Focus Styles */
a:focus,
button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .nav-toggle {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}