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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg);
    min-height: 100vh;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-24);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--weight-bold);
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: var(--font-5xl);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--font-4xl);
    letter-spacing: -0.01em;
}

h3 {
    font-size: var(--font-2xl);
}

p {
    color: var(--text-secondary);
    line-height: 1.7;
}

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

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

/* Button Styles */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-sm);
    font-weight: var(--weight-medium);
    background: var(--text-primary);
    color: var(--bg);
    border: 1px solid var(--text-primary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.button:hover::before {
    left: 100%;
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.button:active {
    transform: translateY(0);
}

.button-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border);
}

.button-outline:hover {
    background: var(--bg-secondary);
    border-color: var(--border-light);
}

.button-gradient {
    background: var(--gradient-primary);
    border: none;
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.button-gradient:hover {
    box-shadow: var(--shadow-xl);
    filter: brightness(1.1);
}

/* Glassmorphism Card */
.glass-card {
    background: rgba(23, 23, 23, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
    border-color: rgba(99, 102, 241, 0.3);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    border-color: rgba(245, 158, 11, 0.3);
}

/* Divider */
.divider {
    height: 1px;
    background: var(--border);
    margin: var(--space-64) 0;
}

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Selection */
::selection {
    background: rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-800);
    border-radius: var(--radius-full);
    border: 3px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-700);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid rgba(99, 102, 241, 0.5);
    outline-offset: 2px;
}

/* Image Optimization */
img {
    max-width: 100%;
    height: auto;
    display: block;
}