/* ===================================
   CSS RESET & BASE STYLES
   =================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===================================
   CSS VARIABLES
   =================================== */
:root {
    /* Colors */
    --color-bg-primary: #121212;
    --color-bg-secondary: #1E1E1E;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B0B0B0;
    --color-accent-orange: #FF6D00;
    --color-accent-orange-hover: #FF8A33;
    --color-accent-orange-light: rgba(255, 109, 0, 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-regular: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 32px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-orange: 0 8px 24px rgba(255, 109, 0, 0.25);
    --shadow-orange-hover: 0 12px 32px rgba(255, 109, 0, 0.35);
}

/* ===================================
   GLOBAL STYLES
   =================================== */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-extrabold);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    letter-spacing: -0.02em;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.fade-in {
    animation: fadeInUp 1s ease forwards;
}

.fade-in-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===================================
   HEADER & NAVIGATION
   =================================== */
.header {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-black);
    color: var(--color-accent-orange);
    letter-spacing: -0.02em;
}

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

.nav-links a {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-block;
    padding: 16px 40px;
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent-orange) 0%, #FF8A33 100%);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-orange);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-orange-hover);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(0);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent-orange-light) 0%, transparent 70%);
    top: -300px;
    right: -300px;
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero .btn-primary {
    margin-bottom: var(--spacing-2xl);
}

/* ===================================
   SCREENSHOTS CAROUSEL
   =================================== */
.screenshots-carousel {
    margin-top: var(--spacing-2xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
}

.carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.screenshot-item {
    min-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
}

.screenshot-item img {
    width: 100%;
    max-width: 350px;
    height: auto;
    border-radius: var(--radius-2xl);
    box-shadow: 
        var(--shadow-lg),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        0 0 60px rgba(255, 109, 0, 0.15);
    transition: transform var(--transition-normal);
}

.screenshot-item:hover img {
    transform: scale(1.02);
}

.screenshot-caption {
    margin-top: var(--spacing-md);
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent-orange);
    text-align: center;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    opacity: 0.4;
}

.dot.active {
    background: var(--color-accent-orange);
    opacity: 1;
    transform: scale(1.2);
}

.dot:hover {
    opacity: 0.8;
}

/* ===================================
   FEATURES SECTION
   =================================== */
.features {
    background: var(--color-bg-primary);
}

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

.feature-card {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent-orange);
    box-shadow: 0 12px 40px rgba(255, 109, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-accent-orange) 0%, #FF8A33 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--color-text-primary);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
}

.feature-desc {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===================================
   INSTALLATION SECTION
   =================================== */
.installation {
    background: var(--color-bg-secondary);
}

.install-steps {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.install-step {
    background: var(--color-bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    border-left: 4px solid var(--color-accent-orange);
    transition: all var(--transition-normal);
}

.install-step:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-accent-orange) 0%, #FF8A33 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-black);
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===================================
   PRIVACY PAGE
   =================================== */
.privacy-page {
    padding: var(--spacing-3xl) 0;
    min-height: 70vh;
}

.privacy-container {
    max-width: 900px;
}

.privacy-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.privacy-updated {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-accent-orange);
}

.privacy-section {
    margin-bottom: var(--spacing-xl);
}

.privacy-section h2 {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-orange);
}

.privacy-section p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.privacy-section ul {
    list-style: disc;
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.privacy-section li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.privacy-section strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-bold);
}

.contact-info {
    background: var(--color-bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent-orange);
}

.contact-info a {
    color: var(--color-accent-orange);
    text-decoration: underline;
}

.contact-info a:hover {
    color: var(--color-accent-orange-hover);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-brand {
    font-size: 1.5rem;
    font-weight: var(--font-weight-black);
    color: var(--color-accent-orange);
    margin-bottom: var(--spacing-xs);
}

.footer-contact {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.footer-contact a {
    color: var(--color-accent-orange);
    text-decoration: underline;
}

.footer-contact a:hover {
    color: var(--color-accent-orange-hover);
}

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

.footer-links a {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-semibold);
    transition: color var(--transition-fast);
}

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

.footer-copyright {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    :root {
        --spacing-3xl: 3rem;
        --spacing-2xl: 2.5rem;
    }

    .hero {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .nav-links {
        gap: var(--spacing-md);
    }

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

    .screenshot-item img {
        max-width: 280px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

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

    .install-step {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

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

    .screenshot-item {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.25rem;
    }

    .nav-links a {
        font-size: 0.875rem;
    }

    .btn {
        padding: 14px 32px;
        font-size: 1rem;
    }

    .screenshot-item img {
        max-width: 240px;
    }

    .carousel-dots {
        gap: var(--spacing-xs);
    }

    .dot {
        width: 10px;
        height: 10px;
    }
}