@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Dark Theme (Default) */
    --bg-color: #0F172A;
    --text-color: #E2E8F0;
    --text-muted: #94A3B8;
    --primary-color: #8B5CF6;
    --primary-hover: #7C3AED;
    --secondary-color: #3B82F6;
    --accent-color: #F472B6;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --nav-bg: rgba(15, 23, 42, 0.8);
    --card-hover-bg: rgba(255, 255, 255, 0.05);
    
    --nav-height: 70px;
    --transition-speed: 0.3s;
    --container-width: 1200px;
}

[data-theme="light"] {
    --bg-color: #F8FAFC;
    --text-color: #1E293B;
    --text-muted: #64748B;
    --primary-color: #7C3AED;
    --primary-hover: #6D28D9;
    --secondary-color: #2563EB;
    --accent-color: #DB2777;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.05);
    --nav-bg: rgba(255, 255, 255, 0.8);
    --card-hover-bg: rgba(255, 255, 255, 0.9);
}

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

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

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-color);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

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

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

/* Navigation */
.navbar {
    height: var(--nav-height);
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
    list-style: none;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
    position: relative;
    padding: 5px 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
}

.theme-toggle:hover {
    background-color: var(--glass-border);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
    z-index: 1001;
}

.bar {
    width: 24px;
    height: 2px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: var(--transition-speed);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--nav-height);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    pointer-events: none;
}

[data-theme="light"] .hero-bg {
    opacity: 0.05;
    filter: invert(1);
}

.hero-content {
    max-width: 650px;
    z-index: 1;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all var(--transition-speed);
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    color: #fff;
}

/* Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 2rem;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px;
    transition: transform var(--transition-speed), background-color var(--transition-speed), border-color var(--transition-speed);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    transform: translateY(-4px);
    background: var(--card-hover-bg);
    border-color: var(--primary-color);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.card-link {
    margin-top: auto;
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.card-link:hover {
    gap: 8px;
}

/* Footer */
footer {
    background: var(--glass-bg);
    padding: 60px 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    margin-top: auto;
}

footer p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 75%;
        max-width: 300px;
        background: var(--bg-color);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 24px;
        transform: translateX(100%);
        transition: transform var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
        border-left: 1px solid var(--glass-border);
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        transform: translateX(0);
    }

    .hero-content {
        text-align: center;
        margin: 0 auto;
    }
    
    .hero {
        padding-top: 100px; /* More space for mobile */
        align-items: flex-start;
    }
}