/*
 * Turbo 8bit - Commodore 64 Color Palette Theme
 * 
 * C64 Colors:
 * - Black: #000000
 * - White: #FFFFFF
 * - Red: #880000
 * - Cyan: #AAFFEE
 * - Purple: #CC44CC
 * - Green: #00CC55
 * - Blue: #0000AA
 * - Yellow: #EEEE77
 * - Orange: #DD8855
 * - Brown: #664400
 * - Light Red: #FF7777
 * - Dark Grey: #333333
 * - Grey: #777777
 * - Light Green: #AAFF66
 * - Light Blue: #0088FF
 * - Light Grey: #BBBBBB
 */

:root {
    --c64-black: #000000;
    --c64-white: #FFFFFF;
    --c64-red: #880000;
    --c64-cyan: #AAFFEE;
    --c64-purple: #CC44CC;
    --c64-green: #00CC55;
    --c64-blue: #0000AA;
    --c64-yellow: #EEEE77;
    --c64-orange: #DD8855;
    --c64-brown: #664400;
    --c64-light-red: #FF7777;
    --c64-dark-grey: #333333;
    --c64-grey: #777777;
    --c64-light-green: #AAFF66;
    --c64-light-blue: #0088FF;
    --c64-light-grey: #BBBBBB;
    
    /* Theme variables */
    --bg-primary: var(--c64-blue);
    --bg-secondary: var(--c64-dark-grey);
    --text-primary: var(--c64-light-blue);
    --text-secondary: var(--c64-cyan);
    --accent-primary: var(--c64-cyan);
    --accent-secondary: var(--c64-light-green);
    --border-color: var(--c64-light-blue);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Press Start 2P', cursive;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 12px;
    line-height: 1.8;
}

/* Header */
.site-header {
    background-color: var(--c64-black);
    border-bottom: 4px solid var(--c64-light-blue);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    text-decoration: none;
    display: flex;
    gap: 0.5rem;
}

.logo-turbo {
    color: var(--c64-cyan);
    font-size: 1.5rem;
}

.logo-8bit {
    color: var(--c64-light-green);
    font-size: 1.5rem;
}

.main-nav a {
    color: var(--c64-yellow);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.main-nav a:hover {
    border-color: var(--c64-yellow);
}

/* Footer */
.site-footer {
    background-color: var(--c64-black);
    border-top: 4px solid var(--c64-light-blue);
    padding: 1.5rem 2rem;
    text-align: center;
    color: var(--c64-grey);
    font-size: 0.6rem;
}

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

/* Timeline Container */
.timeline-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.timeline-header {
    text-align: center;
    margin-bottom: 1rem;
}

.timeline-header h1 {
    color: var(--c64-cyan);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-shadow: 3px 3px 0 var(--c64-black);
}

.timeline-header .subtitle {
    color: var(--c64-light-grey);
    font-size: 0.7rem;
}

/* Timeline */
.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline-line {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: calc(100% - 220px);
    background: linear-gradient(
        to bottom,
        var(--c64-light-blue) 0%,
        var(--c64-cyan) 50%,
        var(--c64-light-green) 100%
    );
    top: 0;
}

/* Year Marker */
.timeline-year-marker {
    position: relative;
    text-align: center;
    margin: 2rem 0;
    z-index: 10;
}

.year-label {
    display: inline-block;
    background-color: var(--c64-black);
    color: var(--c64-yellow);
    padding: 0.75rem 1.5rem;
    border: 3px solid var(--c64-yellow);
    font-size: 1rem;
}

/* Timeline Item */
.timeline-item {
    position: relative;
    width: 50%;
    padding: 0.25rem 2rem;
    margin-bottom: 0;
}

.timeline-item.right {
    left: 50%;
    padding-left: 3rem;
}

.timeline-item.left {
    left: 0;
    padding-right: 3rem;
    text-align: right;
}

.timeline-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: var(--c64-cyan);
    border: 2px solid var(--c64-black);
    top: 50%;
    transform: translateY(-50%);
}

.timeline-item.right .timeline-dot {
    left: -6px;
}

.timeline-item.left .timeline-dot {
    right: -6px;
}

.timeline-content {
    background-color: var(--c64-black);
    border: 3px solid var(--c64-light-blue);
    padding: 1rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    text-decoration: none;
    cursor: pointer;
}

.timeline-item.right .timeline-content {
    border-left-width: 6px;
}

.timeline-item.left .timeline-content {
    border-right-width: 6px;
    flex-direction: row-reverse;
}

.timeline-item.right .timeline-content .computer-icon {
    margin-right: 1rem;
}

.timeline-item.left .timeline-content .computer-icon {
    margin-left: 1rem;
}

/* Timeline covers for games and other entities */
.timeline-cover {
    max-height: 65px;
    background-color: transparent;
    border: none;
    flex-shrink: 0;
    /* High-quality scaling for photographic images */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: smooth;
    image-rendering: high-quality;
}

.timeline-cover.has-cover {
    background-repeat: no-repeat;
}

.timeline-item.right .timeline-content .timeline-cover {
    margin-right: 1rem;
}

.timeline-item.left .timeline-content .timeline-cover {
    margin-left: 1rem;
}

.timeline-content:hover {
    border-color: var(--c64-cyan);
    transform: scale(1.02);
}

.timeline-text {
    display: block;
}

.timeline-text .item-name {
    display: block;
    color: var(--c64-cyan);
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
}

.timeline-text .item-subtitle {
    display: block;
    color: var(--c64-light-grey);
    font-size: 0.65rem;
    font-style: italic;
    margin-bottom: 0.25rem;
}

.timeline-text .item-date {
    display: block;
    color: var(--c64-grey);
    font-size: 0.6rem;
}

.timeline-content:hover .item-name {
    color: var(--c64-light-green);
}

/* Different colors for item types */
.timeline-item[data-type="CPU"] .timeline-dot {
    background-color: var(--c64-purple);
}

.timeline-item[data-type="CPU Family"] .timeline-dot {
    background-color: var(--c64-orange);
}

.timeline-item[data-type="Computer"] .timeline-dot {
    background-color: var(--c64-cyan);
}

.timeline-item[data-type="Person"] .timeline-dot {
    background-color: var(--c64-light-green);
}

.timeline-item[data-type="Sound Chip"] .timeline-dot {
    background-color: var(--c64-light-red);
}

.timeline-item[data-type="Video Chip"] .timeline-dot {
    background-color: var(--c64-yellow);
}

.timeline-item[data-type="Programming Language"] .timeline-dot,
.timeline-item[data-type="Operating System"] .timeline-dot {
    background-color: var(--c64-light-blue);
}

.timeline-item[data-type="Game"] .timeline-dot {
    background-color: var(--c64-green);
}

/* Machine Detail Page */
.machine-detail {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

.machine-header {
    margin-bottom: 2rem;
}

.back-link {
    display: inline-block;
    color: var(--c64-yellow);
    text-decoration: none;
    font-size: 0.7rem;
    margin-bottom: 1.5rem;
    padding: 0.5rem 1rem;
    border: 2px solid var(--c64-yellow);
    transition: all 0.2s;
}

.back-link:hover {
    background-color: var(--c64-yellow);
    color: var(--c64-black);
}

.machine-header h1 {
    color: var(--c64-cyan);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 0 var(--c64-black);
}

.machine-year {
    color: var(--c64-light-green);
    font-size: 1.5rem;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .info-grid {
        grid-template-columns: 1fr;
    }
}

.info-card {
    background-color: var(--c64-black);
    border: 3px solid var(--c64-light-blue);
    padding: 1.5rem;
}

.info-card h3 {
    color: var(--c64-yellow);
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--c64-dark-grey);
}

.info-card dl {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 0.75rem;
}

.info-card dt {
    color: var(--c64-grey);
    font-size: 0.6rem;
}

.info-card dd {
    color: var(--c64-cyan);
    font-size: 0.7rem;
}

.machine-notes {
    color: var(--c64-light-grey);
    font-size: 0.7rem;
    line-height: 2;
    margin-bottom: 1.5rem;
}

.wiki-link {
    display: inline-block;
    color: var(--c64-light-blue);
    text-decoration: none;
    font-size: 0.6rem;
    padding: 0.5rem 1rem;
    border: 2px solid var(--c64-light-blue);
    transition: all 0.2s;
}

.wiki-link:hover {
    background-color: var(--c64-light-blue);
    color: var(--c64-black);
}

/* Related Section */
.related-section {
    background-color: var(--c64-black);
    border: 3px solid var(--c64-light-blue);
    padding: 1.5rem;
}

.related-section h3 {
    color: var(--c64-yellow);
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
}

.related-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.related-card {
    background-color: var(--c64-dark-grey);
    border: 2px solid var(--c64-grey);
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.related-card .entity-type {
    color: var(--c64-grey);
    font-size: 0.5rem;
    text-transform: uppercase;
}

.related-card .entity-name {
    color: var(--c64-cyan);
    font-size: 0.6rem;
}

/* Type-specific colors */
.related-card.cpu {
    border-color: var(--c64-purple);
}

.related-card.cpu .entity-name {
    color: var(--c64-purple);
}

.related-card.cpu-family {
    border-color: var(--c64-orange);
}

.related-card.cpu-family .entity-name {
    color: var(--c64-orange);
}

.related-card.company {
    border-color: var(--c64-green);
}

.related-card.company .entity-name {
    color: var(--c64-green);
}

.related-card.computer {
    border-color: var(--c64-light-blue);
}

.related-card.computer .entity-name {
    color: var(--c64-light-blue);
}

/* Responsive Timeline */
@media (max-width: 768px) {
    .timeline-line {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 50px !important;
        padding-right: 1rem !important;
        text-align: left !important;
    }
    
    .timeline-dot {
        left: 12px !important;
        right: auto !important;
    }
    
    .timeline-content {
        border-left-width: 6px !important;
        border-right-width: 3px !important;
    }
    
    .year-label {
        font-size: 0.8rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--c64-black);
}

::-webkit-scrollbar-thumb {
    background: var(--c64-light-blue);
    border: 2px solid var(--c64-black);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--c64-cyan);
}

/* Pixel effect animation */
@keyframes pixelate {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.logo:hover .logo-turbo,
.logo:hover .logo-8bit {
    animation: pixelate 0.3s ease-in-out infinite;
}

/* Entity Detail Page */
.entity-detail {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

.entity-header {
    margin-bottom: 2rem;
}

.entity-icon-large {
    float: right;
    margin-left: 1rem;
    padding: 0.5rem;
    background-color: #000000;
    border: 3px solid var(--c64-cyan);
}

.entity-cover-large {
    float: right;
    margin-left: 1.5rem;
    margin-bottom: 1rem;
    background-color: #000000;
    border: 3px solid var(--c64-cyan);
    box-shadow: 4px 4px 0 var(--c64-dark-grey);
    /* High-quality scaling for photographic images */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: smooth;
    image-rendering: high-quality;
}

.entity-cover-large.has-cover {
    background-repeat: no-repeat;
}

/* Screenshots Section */
.screenshots-section {
    clear: both;
    margin: 2rem 0;
    padding: 1rem;
    background-color: var(--c64-dark-grey);
    border: 2px solid var(--c64-grey);
}

.screenshots-grid {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.screenshot-thumb {
    display: block;
    max-width: 300px;
    border: 2px solid var(--c64-cyan);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.screenshot-thumb:hover {
    transform: scale(1.02);
    border-color: var(--c64-light-green);
}

.screenshot-thumb img {
    display: block;
    width: 100%;
    height: auto;
    image-rendering: auto;
}

.entity-type-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: 0.6rem;
    text-transform: uppercase;
    margin-bottom: 1rem;
    border: 2px solid;
}

.entity-type-badge.computer {
    color: var(--c64-cyan);
    border-color: var(--c64-cyan);
}

.entity-type-badge.cpu {
    color: var(--c64-purple);
    border-color: var(--c64-purple);
}

.entity-type-badge.cpu-family {
    color: var(--c64-orange);
    border-color: var(--c64-orange);
}

.entity-type-badge.company {
    color: var(--c64-green);
    border-color: var(--c64-green);
}

.entity-type-badge.sound-chip {
    color: var(--c64-light-red);
    border-color: var(--c64-light-red);
}

.entity-type-badge.video-chip {
    color: var(--c64-yellow);
    border-color: var(--c64-yellow);
}

.entity-type-badge.person {
    color: var(--c64-light-green);
    border-color: var(--c64-light-green);
}

.entity-type-badge.operating-system,
.entity-type-badge.programming-language {
    color: var(--c64-light-blue);
    border-color: var(--c64-light-blue);
}

.entity-type-badge.game {
    color: var(--c64-light-red);
    border-color: var(--c64-light-red);
}

.entity-header h1 {
    color: var(--c64-cyan);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 0 var(--c64-black);
}

.entity-year {
    color: var(--c64-light-green);
    font-size: 1.5rem;
}

.entity-achievement {
    color: var(--c64-yellow);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--c64-dark-grey);
    border-left: 4px solid var(--c64-yellow);
    display: inline-block;
}

/* Nostalgia Box */
.nostalgia-box {
    background-color: var(--c64-dark-grey);
    border: 3px solid var(--c64-cyan);
    border-left-width: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.nostalgia-text {
    color: var(--c64-cyan);
    font-size: 0.8rem;
    font-style: italic;
    line-height: 2;
}

/* Entity Summary */
.entity-summary {
    color: var(--c64-light-grey);
    font-size: 0.7rem;
    line-height: 2;
    margin-bottom: 1.5rem;
}

/* Trivia Section */
.trivia-section {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 2px solid var(--c64-dark-grey);
}

.trivia-section h4 {
    color: var(--c64-yellow);
    font-size: 0.7rem;
    margin-bottom: 1rem;
}

.trivia-list {
    list-style: none;
    padding: 0;
}

.trivia-list li {
    color: var(--c64-light-grey);
    font-size: 0.6rem;
    line-height: 2;
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.trivia-list li::before {
    content: "►";
    color: var(--c64-light-green);
    position: absolute;
    left: 0;
}

/* Related card links */
.related-card {
    text-decoration: none;
    transition: all 0.2s;
}

.related-card:hover {
    transform: scale(1.05);
    border-width: 3px;
}

/* More entity type colors for related cards */
.related-card.sound-chip {
    border-color: var(--c64-light-red);
}

.related-card.sound-chip .entity-name {
    color: var(--c64-light-red);
}

.related-card.video-chip {
    border-color: var(--c64-yellow);
}

.related-card.video-chip .entity-name {
    color: var(--c64-yellow);
}

.related-card.person {
    border-color: var(--c64-light-green);
}

.related-card.person .entity-name {
    color: var(--c64-light-green);
}

.related-card.operating-system,
.related-card.programming-language {
    border-color: var(--c64-light-blue);
}

.related-card.operating-system .entity-name,
.related-card.programming-language .entity-name {
    color: var(--c64-light-blue);
}

/* Timeline item type in left column */
.timeline-link .item-type {
    display: block;
    color: var(--c64-grey);
    font-size: 0.5rem;
    text-transform: uppercase;
    margin-bottom: 0.25rem;
}

/* ======================================
   PIXEL ART SPRITES (64x64 base size)
   ====================================== */

/* Timeline End Marker */
.timeline-end {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    margin-top: 1rem;
}

.era-title {
    display: block;
    color: var(--c64-yellow);
    font-size: 1rem;
    margin-top: 1rem;
}

.era-year {
    display: block;
    color: var(--c64-grey);
    font-size: 0.7rem;
}

/* Pixel Sprite Container - Base 64x64 grid */
.pixel-sprite {
    width: 128px;
    height: 128px;
    margin: 1rem 0;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.sprite-container {
    width: 100%;
    height: 100%;
    position: relative;
}

/* CPU Chip Sunrise Sprite - Pure CSS Pixel Art */
.cpu-chip .sprite-container {
    background: 
       
        /* Chip body */
        linear-gradient(var(--c64-dark-grey), var(--c64-dark-grey)) no-repeat 24px 64px / 80px 56px,
        /* Chip pins left */
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 16px 72px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 16px 80px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 16px 88px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 16px 96px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 16px 104px / 8px 4px,
        /* Chip pins right */
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 104px 72px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 104px 80px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 104px 88px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 104px 96px / 8px 4px,
        linear-gradient(var(--c64-light-grey), var(--c64-light-grey)) no-repeat 104px 104px / 8px 4px,
        /* Chip label/die */
        linear-gradient(var(--c64-blue), var(--c64-blue)) no-repeat 40px 72px / 48px 40px,
        /* 16 label */
        linear-gradient(var(--c64-cyan), var(--c64-cyan)) no-repeat 48px 80px / 4px 24px,
        linear-gradient(var(--c64-cyan), var(--c64-cyan)) no-repeat 56px 80px / 4px 4px,
        linear-gradient(var(--c64-cyan), var(--c64-cyan)) no-repeat 56px 92px / 4px 4px,
        linear-gradient(var(--c64-cyan), var(--c64-cyan)) no-repeat 56px 100px / 12px 4px,
        linear-gradient(var(--c64-cyan), var(--c64-cyan)) no-repeat 64px 80px / 4px 24px,
        linear-gradient(var(--c64-cyan), var(--c64-cyan)) no-repeat 72px 80px / 4px 24px;
}

/* Computer Icons from Sprite Sheet */
/* Sprite positioning handled by JavaScript (sprites.js) */
.computer-icon {
    width: 70px;
    height: 44px;
    background-image: url('/static/computers.png');
    background-repeat: no-repeat;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    flex-shrink: 0;
}

.computer-icon-large {
    /* Width and height set dynamically by JS to actual sprite size */
    background-image: url('/static/computers.png');
    background-repeat: no-repeat;
    background-color: #000000;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    padding: 20px;
    border-radius: 8px;
}