/* ============================================
   BASE STYLES — Reset, Typography, Layout
   ============================================ */

/* === Reset === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--accent-cyan);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

p {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.text-gradient {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-accent {
    color: var(--accent-cyan);
}

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

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

.container--narrow {
    max-width: var(--container-narrow);
}

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

/* === Section Header === */
.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: var(--fs-h2);
    margin-bottom: var(--space-xs);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-brand);
    border-radius: 2px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: var(--fs-body);
    margin-top: var(--space-sm);
}

/* === Page Transition === */
.page-transition {
    animation: fadeInPage 0.5s ease forwards;
}

@keyframes fadeInPage {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.5);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-secondary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
    box-shadow: var(--glow-primary);
}
/* === Selection === */
::selection {
    background: var(--accent-primary);
    color: #000000;
}