/* =====================================================
   Aivolo Design System
   ===================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-bg-primary: #0d0d0e;
    --color-bg-secondary: #1a1a1b;
    --color-bg-tertiary: #141415;
    --color-accent: #f5a623;
    --color-accent-hover: #ffb740;
    --color-text-primary: #ffffff;
    --color-text-secondary: #8a8a8a;
    --color-text-muted: #5a5a5a;
    --color-border: #2a2a2b;
    --color-code-green: #4ade80;
    --color-code-orange: #f5a623;
    --color-code-blue: #60a5fa;
    --color-code-purple: #a78bfa;

    /* Gradients */
    --gradient-accent: linear-gradient(135deg, #f5a623 0%, #ff6b35 100%);
    --gradient-border: linear-gradient(135deg, #f5a623 0%, #a855f7 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(245, 166, 35, 0.15) 0%, transparent 70%);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(245, 166, 35, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

/* =====================================================
   Navigation
   ===================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--spacing-md) 0;
    background: rgba(13, 13, 14, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
}

.logo-img {
    height: 112px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

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

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

.btn-connect {
    background: var(--color-accent) !important;
    color: var(--color-bg-primary) !important;
    padding: var(--spacing-sm) var(--spacing-lg) !important;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.btn-connect:hover {
    background: var(--color-accent-hover) !important;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition-fast);
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-xl) var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glow);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    background: rgba(245, 166, 35, 0.1);
    border: 1px solid rgba(245, 166, 35, 0.3);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    margin-bottom: var(--spacing-xl);
    overflow: visible;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 480px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-text-muted);
}

.btn-icon {
    width: 16px;
    height: 16px;
}

/* Code Window */
.hero-code {
    position: relative;
    z-index: 1;
}

.code-window {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.code-header {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.red {
    background: #ff5f56;
}

.code-dot.yellow {
    background: #ffbd2e;
}

.code-dot.green {
    background: #27c93f;
}

.code-content {
    padding: var(--spacing-xl);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.8;
    min-height: 180px;
}

.code-content pre {
    margin: 0;
}

.code-content code {
    color: var(--color-text-secondary);
}

.code-keyword {
    color: var(--color-code-purple);
}

.code-function {
    color: var(--color-code-blue);
}

.code-string {
    color: var(--color-code-green);
}

.code-variable {
    color: var(--color-code-orange);
}

.code-comment {
    color: var(--color-text-muted);
}

/* =====================================================
   About Section
   ===================================================== */
.about-section {
    padding: var(--spacing-4xl) var(--spacing-xl);
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.about-container {
    max-width: 700px;
    margin: 0 auto;
}

.about-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-accent);
}

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

.about-title {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.about-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* =====================================================
   Products Section
   ===================================================== */
.products-section {
    padding: var(--spacing-4xl) var(--spacing-xl);
    background: var(--color-bg-primary);
}

.products-container {
    max-width: 1200px;
    margin: 0 auto;
}

.products-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.products-title {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.products-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    max-width: 400px;
}

.products-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

/* Product Card */
.product-card {
    position: relative;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
    overflow: hidden;
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.product-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 1px;
    background: var(--gradient-border);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.product-card:hover::before {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-4px);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: rgba(245, 166, 35, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

.card-link-icon {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.product-card:hover .card-link-icon {
    color: var(--color-accent);
}

.card-link-icon svg {
    width: 20px;
    height: 20px;
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.card-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.card-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    font-weight: 500;
    transition: gap var(--transition-fast);
}

.card-cta:hover {
    gap: var(--spacing-md);
}

.card-cta svg {
    width: 16px;
    height: 16px;
}

/* =====================================================
   Stats Section
   ===================================================== */
.stats-section {
    padding: var(--spacing-4xl) var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.infinity-icon {
    width: 40px;
    height: 40px;
    color: var(--color-text-primary);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: var(--color-bg-primary);
    padding: var(--spacing-4xl) var(--spacing-xl) 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-4xl);
    padding-bottom: var(--spacing-3xl);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-lg);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    max-width: 280px;
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: var(--spacing-4xl);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-column a {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
}

.footer-bottom-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

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

.footer-legal a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer-legal a:hover {
    color: var(--color-text-secondary);
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .hero-code {
        max-width: 500px;
    }

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

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

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-primary);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding-top: calc(80px + var(--spacing-2xl));
    }

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

    .btn {
        justify-content: center;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-2xl);
    }

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

    .hero-tag {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        max-width: 100%;
        padding: var(--spacing-sm) var(--spacing-lg);
    }

    .hero-tag span {
        word-break: keep-all;
    }
}

@media (max-width: 480px) {
    .stats-container {
        grid-template-columns: 1fr;
    }

    .hero-tag {
        font-size: var(--font-size-xs);
        max-width: 100%;
        white-space: normal;
        text-align: center;
        line-height: 1.4;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: var(--color-accent);
    margin-left: 2px;
    animation: blink 1s infinite;
    vertical-align: text-bottom;
}

/* =====================================================
   Language Switcher
   ===================================================== */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-family: inherit;
}

.lang-switcher:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.lang-icon {
    font-size: var(--font-size-base);
}

.lang-text {
    font-weight: 500;
}

@media (max-width: 768px) {
    .lang-switcher {
        position: absolute;
        top: var(--spacing-md);
        right: 60px;
    }
}