:root {
    --bg-color: #0b1121;
    --surface-color: #151e32;
    --surface-hover: #1e293b;
    --primary-color: #00e5ff;
    --primary-hover: #00b8cc;
    --danger-color: #ff3366;
    --success-color: #00ff9d;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --glass-bg: rgba(21, 30, 50, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', sans-serif;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #2979ff);
    color: #0b1121;
    box-shadow: 0 4px 14px 0 rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(0, 229, 255, 0.5);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: rgba(0, 229, 255, 0.1);
}

.card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

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

.gap-4 {
    gap: 16px;
}

.gap-8 {
    gap: 32px;
}

.grid {
    display: grid;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

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

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.text-center {
    text-align: center;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.text-4xl {
    font-size: 2.25rem;
}

.font-bold {
    font-weight: 700;
}

.text-primary {
    color: var(--primary-color);
}

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

.w-full {
    width: 100%;
}

.mt-4 {
    margin-top: 16px;
}

.mt-8 {
    margin-top: 32px;
}

.mb-4 {
    margin-bottom: 16px;
}

.p-4 {
    padding: 16px;
}

.py-12 {
    padding-top: 48px;
    padding-bottom: 48px;
}

/* Header */
header {
    background: rgba(11, 17, 33, 0.8);
    backdrop-filter: blur(12px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

nav {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    color: var(--primary-color);
}

/* Hero */
.hero {
    padding-top: 160px;
    padding-bottom: 80px;
    text-align: center;
    background: radial-gradient(circle at 50% 50%, rgba(0, 229, 255, 0.1) 0%, transparent 50%);
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Forms */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: left;
}

label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

input[type="text"],
input[type="url"],
select {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-group {
    display: flex;
    gap: 12px;
    align-items: center;
    cursor: pointer;
    background: var(--surface-hover);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: 0.2s;
}

.checkbox-group:hover {
    border-color: var(--primary-color);
}

input[type="checkbox"] {
    accent-color: var(--primary-color);
    width: 18px;
    height: 18px;
}

/* Dashboard */
.stat-card {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin: 8px 0;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.chart-container {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    height: 300px;
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    gap: 8px;
}

.bar {
    width: 100%;
    background: var(--primary-color);
    opacity: 0.7;
    border-radius: 4px 4px 0 0;
    transition: height 1s ease;
    position: relative;
}

.bar:hover {
    opacity: 1;
}

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

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

.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* Mobile */
@media (max-width: 768px) {

    .grid-cols-2,
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    nav {
        padding: 0 16px;
    }
}