/* ============================================
   BASE STYLES - APEIRON
   Estilos globales y tipografía
   ============================================ */

/* ----------------------------------------
   Body Base
---------------------------------------- */
body {
    font-family: var(--font-mono);
    background-color: var(--color-bg-dark);
    color: var(--color-text-primary);
    overflow-x: hidden;
}

/* ----------------------------------------
   Grid Background
---------------------------------------- */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-grid);
    background-image:
        linear-gradient(var(--color-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-grid-line) 1px, transparent 1px);
    background-size: var(--grid-size) var(--grid-size);
    z-index: var(--z-behind);
    pointer-events: none;
}

.grid-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 40vmin;
    height: 40vmin;
    background: var(--gradient-stripe);
    clip-path: polygon(100% 0, 0% 100%, 100% 100%);
    opacity: 0.15;
}

/* ----------------------------------------
   Typography - Headings
---------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-primary);
    line-height: 1.1;
}

h1 {
    font-size: var(--text-hero);
}

h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-md);
}

h3 {
    font-size: var(--text-2xl);
    color: var(--color-accent-yellow);
}

h4 {
    font-size: var(--text-xl);
}

/* ----------------------------------------
   Typography - Body Text
---------------------------------------- */
p {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    line-height: 1.8;
}

p + p {
    margin-top: var(--space-sm);
}

/* ----------------------------------------
   Typography - Links
---------------------------------------- */
a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

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

/* ----------------------------------------
   Typography - Emphasis
---------------------------------------- */
strong,
b {
    font-weight: 700;
}

em,
i {
    font-style: italic;
}

/* ----------------------------------------
   Typography - Accents in Headings
---------------------------------------- */
h2 span {
    color: var(--color-accent-red);
}

/* ----------------------------------------
   Lists
---------------------------------------- */
ul,
ol {
    padding-left: var(--space-md);
}

li {
    margin-bottom: var(--space-xs);
}

/* ----------------------------------------
   Images
---------------------------------------- */
img {
    object-fit: cover;
}

/* ----------------------------------------
   Placeholder Text (for images)
---------------------------------------- */
.placeholder-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    z-index: 1;
    pointer-events: none;
}

/* Hide placeholder when image loads */
img:not([src='']):not([src*='placeholder']) + .placeholder-text {
    display: none;
}

/* ----------------------------------------
   Main Content Area
---------------------------------------- */
main {
    position: relative;
    z-index: var(--z-base);
}

/* ----------------------------------------
   Section Base
---------------------------------------- */
section {
    padding: var(--space-xl) 0;
    position: relative;
}

/* ----------------------------------------
   Horizontal Rules
---------------------------------------- */
hr {
    border: none;
    height: 1px;
    background: var(--color-grid-line);
    margin: var(--space-md) 0;
}

/* ----------------------------------------
   Code/Pre (if needed)
---------------------------------------- */
code,
pre {
    font-family: var(--font-mono);
    background: var(--color-bg-card);
    padding: var(--space-2xs) var(--space-xs);
    border-radius: var(--radius-sm);
}

pre {
    padding: var(--space-sm);
    overflow-x: auto;
}