/*
 * Computer Chronicles Episode Guide
 * Theme: Terminal Green (CRT Aesthetic)
 *
 * This stylesheet can be replaced with an alternative theme.
 * The HTML uses semantic class names that describe content, not appearance.
 */

/* ============================================
   CSS Custom Properties (Theme Variables)
   ============================================ */
:root {
    --color-primary: #33ff33;
    --color-primary-dim: #1a8c1a;
    --color-primary-glow: #00ff00;
    --color-background: #0a0a0a;
    --color-background-light: #141414;
    --color-background-lighter: #1a1a1a;
    --color-border: #1a3d1a;
    --color-text: #33ff33;
    --color-text-dim: #1a8c1a;
    --color-missing: #666633;

    --font-display: 'VT323', 'Courier New', monospace;
    --font-body: 'IBM Plex Mono', 'Consolas', monospace;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --border-radius: 0;
    --transition-speed: 0.2s;
}

/* ============================================
   Font Loading
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=VT323&family=IBM+Plex+Mono:wght@400;600&display=swap');

/* ============================================
   Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-background);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.5;
    position: relative;
    overflow-x: hidden;
}

/* CRT Scanline Effect */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15),
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 1000;
    animation: flicker 0.15s infinite;
}

/* Subtle CRT Flicker - applied to scanline overlay only, not body */
@keyframes flicker {
    0% { opacity: 0.97; }
    50% { opacity: 1; }
    100% { opacity: 0.98; }
}

/* ============================================
   Utility Classes
   ============================================ */
.hidden {
    display: none !important;
}

/* ============================================
   Site Header
   ============================================ */
.site-header {
    background: var(--color-background-light);
    border-bottom: 1px solid var(--color-primary-dim);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.site-logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 2rem;
    text-shadow: 0 0 10px var(--color-primary-glow);
    white-space: nowrap;
}

.logo-cursor {
    display: inline-block;
    width: 0.6em;
    height: 1.2em;
    background: var(--color-primary);
    animation: blink 1s step-end infinite;
    vertical-align: middle;
    margin-left: 0.2em;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ============================================
   Search
   ============================================ */
.search-container {
    flex: 1;
    max-width: 300px;
    min-width: 200px;
}

.search-input {
    font-family: var(--font-body);
    background: var(--color-background);
    border: 1px solid var(--color-primary-dim);
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    width: 100%;
    font-size: 0.9rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary-glow);
}

.search-input::placeholder {
    color: var(--color-text-dim);
}

/* ============================================
   Navigation
   ============================================ */
.main-nav {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.nav-button {
    font-family: var(--font-body);
    background: transparent;
    border: 1px solid var(--color-primary-dim);
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    font-size: 0.9rem;
}

.nav-button:hover,
.nav-button.active {
    background: var(--color-primary);
    color: var(--color-background);
    box-shadow: 0 0 15px var(--color-primary-glow);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    padding: var(--spacing-xl);
    min-height: calc(100vh - 200px);
}

.view {
    max-width: 1400px;
    margin: 0 auto;
}

.view-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 5px var(--color-primary-glow);
}

.section-title::before {
    content: "> ";
    color: var(--color-text-dim);
}

.view-intro {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-background-light);
    border: 1px solid var(--color-border);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--color-text-dim);
}

.view-intro:empty {
    display: none;
}

.view-intro p {
    margin-bottom: var(--spacing-sm);
}

.view-intro p:last-child {
    margin-bottom: 0;
}

.view-intro a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-speed);
}

.view-intro a:hover {
    text-shadow: 0 0 10px var(--color-primary-glow);
}

.back-button {
    font-family: var(--font-body);
    background: transparent;
    border: 1px solid var(--color-primary-dim);
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.back-button:hover {
    background: var(--color-primary);
    color: var(--color-background);
}

/* ============================================
   Index List (Seasons, Guests, Companies, Tags)
   ============================================ */
.index-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.index-item {
    background: var(--color-background-light);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.index-item:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 15px rgba(51, 255, 51, 0.3);
}

.index-item-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.index-item-count {
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

/* ============================================
   Episode Grid
   ============================================ */
.episode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.episode-card {
    background: var(--color-background-light);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
}

.episode-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(51, 255, 51, 0.3);
}

/* CCRP (Recently Digitized) Episodes */
.episode-card.ccrp {
    animation: ccrp-pulse 2s ease-in-out infinite;
}

@keyframes ccrp-pulse {
    0%, 100% { box-shadow: 0 0 5px var(--color-primary-glow); }
    50% { box-shadow: 0 0 25px var(--color-primary-glow), 0 0 50px rgba(51, 255, 51, 0.3); }
}

.episode-card.ccrp::after {
    content: "NEW";
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 0.8rem;
    background: var(--color-primary);
    color: var(--color-background);
    padding: 0.1rem 0.4rem;
    animation: blink 1s step-end infinite;
}

/* Missing Episodes */
.episode-card.missing {
    opacity: 0.5;
    border-style: dashed;
}

.episode-card.missing .thumbnail::before {
    content: "[MISSING]";
    color: var(--color-text-dim);
    position: absolute;
    z-index: 1;
}

/* Thumbnail */
.thumbnail {
    background: var(--color-background);
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border);
    color: var(--color-text-dim);
    font-size: 0.8rem;
    overflow: hidden;
    position: relative;
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* CRT green effect */
    filter: sepia(100%) saturate(300%) hue-rotate(80deg) brightness(0.7);
}

/* CRT scanline overlay on thumbnails */
.thumbnail::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.3) 2px,
        rgba(0, 0, 0, 0.3) 4px
    );
    pointer-events: none;
}

/* Card Content */
.card-number {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.card-title {
    font-size: 1rem;
    margin: var(--spacing-sm) 0;
    text-shadow: 0 0 5px var(--color-primary-glow);
}

.card-date {
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-top: var(--spacing-sm);
}

.tag {
    font-size: 0.7rem;
    padding: 0.1rem 0.3rem;
    border: 1px solid var(--color-border);
    color: var(--color-text-dim);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.tag:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

/* ============================================
   Episode Detail View
   ============================================ */
.episode-detail {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

@media (min-width: 900px) {
    .episode-detail {
        grid-template-columns: 2fr 1fr;
    }
}

.video-container {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Remove CRT effects from video player */
.video-container {
    position: relative;
    z-index: 1001;
}

.episode-player {
    position: relative;
    z-index: 1001;
}

.video-container.missing-video {
    color: var(--color-text-dim);
    font-family: var(--font-display);
    font-size: 1.2rem;
}

.episode-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.episode-header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
}

.episode-number {
    font-family: var(--font-display);
    color: var(--color-text-dim);
    font-size: 1rem;
}

.episode-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin: var(--spacing-sm) 0;
    text-shadow: 0 0 10px var(--color-primary-glow);
}

.episode-dates {
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.episode-description {
    line-height: 1.6;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
}

/* Metadata Sections */
.metadata-section {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
}

.metadata-section:empty {
    display: none;
}

.metadata-section:last-child {
    border-bottom: none;
}

.metadata-label {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-xs);
}

.metadata-label::before {
    content: "// ";
}

.metadata-value {
    font-size: 0.95rem;
}

.metadata-list {
    list-style: none;
}

.metadata-list li {
    padding: var(--spacing-xs) 0;
}

.metadata-list li::before {
    content: "- ";
    color: var(--color-text-dim);
}

.metadata-link {
    color: var(--color-primary);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.metadata-link:hover {
    text-shadow: 0 0 10px var(--color-primary-glow);
}

.guest-role,
.product-company {
    color: var(--color-text-dim);
    font-size: 0.85rem;
}

/* Random Access Headlines */
.random-access-list {
    list-style: none;
}

.random-access-list li {
    padding: var(--spacing-xs) 0;
    font-size: 0.9rem;
}

.random-access-list li::before {
    content: ">> ";
    color: var(--color-text-dim);
}

/* Notes */
.episode-notes {
    white-space: pre-wrap;
    font-size: 0.85rem;
    color: var(--color-text-dim);
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    text-align: center;
    padding: var(--spacing-xl);
    font-size: 0.8rem;
    color: var(--color-text-dim);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xl);
}

.site-footer a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-speed);
}

.site-footer a:hover {
    text-shadow: 0 0 10px var(--color-primary-glow);
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 768px) {
    .site-header {
        flex-direction: column;
        align-items: stretch;
    }

    .site-logo {
        justify-content: center;
    }

    .search-container {
        max-width: none;
    }

    .main-nav {
        justify-content: center;
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .episode-grid {
        grid-template-columns: 1fr;
    }

    .logo-text {
        font-size: 1.5rem;
    }
}

/* ============================================
   No Results Message
   ============================================ */
.no-results {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-dim);
    font-family: var(--font-display);
    font-size: 1.2rem;
}

.no-results::before {
    content: "ERROR: ";
    color: var(--color-primary);
}