/* ============================================
   Base Styles - Reset & Typography
   ============================================ */

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

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

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    font-weight: var(--weight-regular);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

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

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

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

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

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

/* Images */
img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Form Elements */
input, button, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

/* Lists */
ul, ol {
    list-style: none;
}

/* Selection */
::selection {
    background-color: rgba(127, 255, 127, 0.3);
    color: var(--color-text-primary);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

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

/* Section Spacing */
section {
    padding: var(--space-24) var(--content-padding);
}

@media (min-width: 768px) {
    section {
        padding: var(--space-32) var(--content-padding);
    }
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: var(--container-md);
    margin: 0 auto var(--space-16);
}

.section-eyebrow {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--color-accent-primary);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-tighter);
    line-height: var(--leading-tight);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: #000;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.btn-primary:hover {
    color: #000;
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    color: var(--color-text-primary);
    background: var(--color-bg-card);
    border: var(--border-card);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.btn-secondary:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-card-hover);
    border-color: rgba(127, 255, 127, 0.2);
}

.btn-secondary code, .btn-secondary span {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-text-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
}