:root {
    /* Premium Color Palette - HSL */
    --primary-hue: 250;
    /* Deep Purple/Blue */
    --secondary-hue: 190;
    /* Cyan/Teal */
    --accent-hue: 320;
    /* Pink/Magenta */

    --color-bg: hsl(var(--primary-hue), 20%, 8%);
    --color-surface: hsl(var(--primary-hue), 15%, 12%);
    --color-surface-glass: hsla(var(--primary-hue), 15%, 12%, 0.7);
    --color-text: hsl(0, 0%, 95%);
    --color-text-muted: hsl(250, 10%, 70%);

    --color-primary: hsl(var(--primary-hue), 80%, 60%);
    --color-secondary: hsl(var(--secondary-hue), 80%, 60%);
    --color-accent: hsl(var(--accent-hue), 80%, 60%);

    --gradient-main: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    --gradient-glass: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);

    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --border-glass: 1px solid rgba(255, 255, 255, 0.1);

    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    background-image:
        radial-gradient(circle at 10% 20%, hsla(var(--primary-hue), 60%, 20%, 0.3) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, hsla(var(--accent-hue), 60%, 20%, 0.3) 0%, transparent 40%);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #fff;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 1rem;
}

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

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

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: var(--border-glass);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    margin-right: 20px;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-primary);
    transition: width 0.3s;
}

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

.icon-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    margin-right: 15px;
    transition: var(--transition);
}

.icon-btn:hover {
    color: var(--color-accent);
    transform: scale(1.1);
}

.icon-btn.liked {
    color: #ef4444;
    /* Red 500 */
}

.icon-btn.liked i {
    font-weight: 900;
    /* Solid heart */
    animation: heartBeat 0.3s ease-in-out;
}

@keyframes heartBeat {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.3);
    }

    100% {
        transform: scale(1);
    }
}

/* Hero Section */
.hero {
    padding: 100px 0 60px;
    text-align: center;
    position: relative;
}

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

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* Glass Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    padding: 40px 0;
}

.card {
    background: var(--color-surface-glass);
    backdrop-filter: blur(12px);
    border: var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glass);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-main);
    opacity: 0;
    transition: var(--transition);
}

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

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(100, 100, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(100, 100, 255, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-secondary i {
    margin-right: 8px;
}

/* Footer */
footer {
    margin-top: 80px;
    padding: 40px 0;
    border-top: var(--border-glass);
    text-align: center;
    color: var(--color-text-muted);
}

/* Utilities */
.text-center {
    text-align: center;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero {
        padding: 60px 0 40px;
    }
}