/* Pastio Design System */
:root {
    /* Color Palette */
    /* Color Palette */
    --bg-dark: #F7F9FC;
    --bg-dark-depth: #E2E8F0;
    --accent-violet: #7F5AF0;
    --accent-violet-hover: #6b46c1;
    --text-white: #1A365D;
    --text-gray: #4A5568;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.4);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-gray);
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
}

.btn-primary {
    background-color: var(--accent-violet);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(127, 90, 240, 0.4);
}

.btn-primary:hover {
    background-color: var(--accent-violet-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(127, 90, 240, 0.6);
}

.section-padding {
    padding: var(--spacing-xl) 0;
}

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

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition-medium);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-white);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a:hover {
    color: var(--accent-violet);
}

/* Footer */
footer {
    background: var(--bg-dark-depth);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--glass-border);
    margin-top: var(--spacing-xl);
}