:root {
    /* Colors - Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-blue: #3b82f6;
    --accent-pink: #f472b6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #f472b6 100%);
    --nav-bg: rgba(255, 255, 255, 0.8);
    --border-color: #e2e8f0;
    --card-bg: #ffffff;

    /* Shapes */
    --shape-blue: rgba(59, 130, 246, 0.5);
    --shape-pink: rgba(244, 114, 182, 0.5);

    --accent-teal: #008888;
    --transition-speed: 0.3s;
}

body.dark-mode {
    --bg-primary: #020617;
    --bg-secondary: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --nav-bg: rgba(2, 6, 23, 0.8);
    --border-color: #1e293b;
    --card-bg: #0f172a;

    --shape-blue: rgba(59, 130, 246, 0.15);
    --shape-pink: rgba(244, 114, 182, 0.15);

    --accent-teal: #00aaaa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

h1,
h2,
h3,
.logo span {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
}

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

/* Background Shapes */
.background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.6;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--shape-blue);
    top: -200px;
    right: -100px;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: var(--shape-pink);
    bottom: -100px;
    left: -100px;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: var(--shape-blue);
    top: 40%;
    left: 10%;
    opacity: 0.3;
}

#background-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.reveal {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
}

.logo img {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.icon-button {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.2s;
}

.icon-button:hover {
    background: var(--border-color);
}

.lang-selector {
    position: relative;
    user-select: none;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
}

.lang-toggle:hover {
    border-color: var(--accent-blue);
    background: var(--bg-primary);
    transform: translateY(-1px);
}

.lang-toggle .chevron {
    font-size: 1.25rem;
    opacity: 0.5;
    transition: transform 0.2s ease;
}

.lang-selector.active .chevron {
    transform: rotate(180deg);
}

.lang-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 160px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    z-index: 1000;
}

.lang-selector.active .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-item {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.lang-item:hover {
    background: var(--bg-secondary);
    color: var(--accent-blue);
}

.lang-item.active {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.05);
}

body.dark-mode .lang-menu {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Main Layout */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 5rem;
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.8rem 1.8rem;
    border-radius: 12px;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.button:active {
    transform: scale(0.98);
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.button.primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.button.primary:hover {
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

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

.button.secondary:hover {
    border-color: var(--accent-pink);
}

/* Hero Section */
#hero {
    min-height: 80vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    padding: 4rem 2rem;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--bg-secondary);
    color: var(--accent-teal);
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

#hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

#hero h1 span {
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.cta-group {
    display: flex;
    gap: 1.5rem;
}

.hero-image {
    position: relative;
}

.main-screenshot {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.glow-effect {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.2);
    transition: box-shadow 0.5s ease;
}

body.dark-mode .glow-effect {
    box-shadow: 0 0 50px rgba(59, 130, 246, 0.3);
}

/* Feature Pages */
.feature-page {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 6rem;
    padding: 8rem 2rem;
}

.feature-page.reverse {
    direction: rtl;
}

.feature-page.reverse .feature-content {
    direction: ltr;
}

.number {
    font-family: 'Outfit', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    opacity: 0.1;
    margin-bottom: -1rem;
}

.feature-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.feature-content ul {
    list-style: none;
}

.feature-content li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.feature-content li span {
    color: var(--accent-pink);
}

.feature-visual {
    width: 100%;
}

.feature-shot {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

/* Placeholders */
.placeholder-img {
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.placeholder-img::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--shape-blue) 25%, transparent 25%, transparent 50%, var(--shape-blue) 50%, var(--shape-blue) 75%, transparent 75%, transparent);
    background-size: 40px 40px;
    opacity: 0.5;
}

.placeholder-img span {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    z-index: 1;
    background: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem;
    margin-top: 4rem;
    background: var(--bg-secondary);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    max-width: 40rem;
}

.logo.small img {
    height: 24px;
}

.footer-links {
    display: flex;
    gap: 2.5rem;
}

.footer-links a {
    font-weight: 600;
    font-size: 0.9rem;
}

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

/* Responsive */
@media (max-width: 968px) {

    #hero,
    .feature-page {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    #hero h1 {
        font-size: 3rem;
    }

    .hero-content p {
        justify-self: center;
    }

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

    .feature-page.reverse {
        direction: ltr;
    }

    .footer-container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .nav-links a {
        display: none;
        /* Hide text links on small mobile, keep repo/theme icon if needed or just simplify */
    }

    .nav-container {
        padding: 0.8rem 1rem;
    }

    .logo span {
        font-size: 1rem;
    }
}

/* Animations */
@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(30px, -50px) rotate(5deg);
    }

    66% {
        transform: translate(-20px, 20px) rotate(-5deg);
    }
}

.shape-1 {
    animation: float 20s infinite ease-in-out;
}

.shape-2 {
    animation: float 25s infinite ease-in-out reverse;
}

.shape-3 {
    animation: float 18s infinite ease-in-out;
}

.hero-image {
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

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