/* style.css - Retro Computer Scientist Portfolio Theme System */

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

/* Theme variables */
body.theme-amber {
    --bg-color: #120a00;
    --text-color: #ffb000;
    --text-glow: 0 0 8px rgba(255, 176, 0, 0.6);
    --border-color: #9c6c00;
    --border-glow: 0 0 6px rgba(156, 108, 0, 0.4);
    --accent-color: #ffd275;
    --card-bg: #221400;
    --input-bg: #1c1000;
    --font-primary: 'Fira Code', 'Courier Prime', monospace;
    --font-header: 'VT323', monospace;
    --led-red: #ff3b30;
    --led-green: #4cd964;
    --led-amber: #ff9500;
}

body.theme-green {
    --bg-color: #031005;
    --text-color: #33ff33;
    --text-glow: 0 0 8px rgba(51, 255, 51, 0.6);
    --border-color: #008800;
    --border-glow: 0 0 6px rgba(0, 136, 0, 0.4);
    --accent-color: #99ff99;
    --card-bg: #071f0b;
    --input-bg: #051608;
    --font-primary: 'Fira Code', 'Courier Prime', monospace;
    --font-header: 'VT323', monospace;
    --led-red: #ff3b30;
    --led-green: #33ff33;
    --led-amber: #ffb000;
}

body.theme-obsidian {
    --bg-color: #0f1115;
    --text-color: #c5c9db;
    --text-glow: none;
    --border-color: #3e4451;
    --border-glow: none;
    --accent-color: #98c379;
    --card-bg: #161a22;
    --input-bg: #1e222b;
    --font-primary: 'Fira Code', monospace;
    --font-header: 'Fira Code', monospace;
    --led-red: #e06c75;
    --led-green: #98c379;
    --led-amber: #d19a66;
}

body.theme-paper {
    --bg-color: #fcfaf2;
    --text-color: #111111;
    --text-glow: none;
    --border-color: #222222;
    --border-glow: none;
    --accent-color: #0000ee; /* Traditional blue links */
    --card-bg: #f5f2e6;
    --input-bg: #ffffff;
    --font-primary: 'EB Garamond', 'Lora', serif;
    --font-header: 'EB Garamond', 'Lora', serif;
    --led-red: #cc0000;
    --led-green: #006600;
    --led-amber: #cc6600;
}

/* Base Body Styles */
body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-primary);
    font-size: 15px;
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* CRT Screen Effects */
.crt-overlay {
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle, rgba(0,0,0,0) 60%, rgba(0,0,0,0.4) 100%);
    z-index: 9999;
}

.crt-scanlines {
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(
        rgba(18, 16, 16, 0) 50%, 
        rgba(0, 0, 0, 0.25) 50%
    ), linear-gradient(
        90deg, 
        rgba(255, 0, 0, 0.06), 
        rgba(0, 255, 0, 0.02), 
        rgba(0, 0, 255, 0.06)
    );
    background-size: 100% 4px, 6px 100%;
    z-index: 9998;
    opacity: 0.8;
}

/* Disable CRT effects on paper/obsidian or if toggled */
body.theme-paper .crt-overlay,
body.theme-paper .crt-scanlines,
body.theme-obsidian .crt-overlay,
body.theme-obsidian .crt-scanlines,
body.crt-off .crt-overlay,
body.crt-off .crt-scanlines {
    display: none;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-left: 1px solid var(--border-color);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border: 2px solid var(--bg-color);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* Layout Framework */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 100vw;
    padding: 10px;
}

/* Header & Controls */
.system-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 2px solid var(--border-color);
    box-shadow: var(--border-glow);
    padding: 10px 15px;
    margin-bottom: 10px;
    background-color: var(--card-bg);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo h1 {
    font-family: var(--font-header);
    font-size: 26px;
    font-weight: bold;
    letter-spacing: 1px;
    text-shadow: var(--text-glow);
}

.logo-icon {
    font-size: 24px;
}

/* Front Panel (IMSAI / PDP-11 LEDs) */
.front-panel {
    display: flex;
    gap: 15px;
    border-left: 2px dashed var(--border-color);
    border-right: 2px dashed var(--border-color);
    padding: 0 20px;
    user-select: none;
}

.panel-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.panel-label {
    font-size: 10px;
    font-family: 'Courier Prime', monospace;
    font-weight: bold;
    opacity: 0.8;
}

.led-group {
    display: flex;
    gap: 6px;
}

.led {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #333333;
    border: 1px solid #111111;
    cursor: pointer;
    position: relative;
    transition: background-color 0.15s ease, box-shadow 0.15s ease;
}

.led.red.active {
    background-color: var(--led-red);
    box-shadow: 0 0 8px var(--led-red);
}
.led.green.active {
    background-color: var(--led-green);
    box-shadow: 0 0 8px var(--led-green);
}
.led.amber.active {
    background-color: var(--led-amber);
    box-shadow: 0 0 8px var(--led-amber);
}

/* Global Controls */
.global-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
}

.retro-select {
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    font-family: var(--font-primary);
    cursor: pointer;
    outline: none;
}

.retro-btn {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 5px 10px;
    font-family: var(--font-primary);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.retro-btn:hover {
    background-color: var(--border-color);
    color: var(--bg-color);
}

.retro-btn.btn-active {
    background-color: var(--card-bg);
    border-width: 2px;
}

/* Main Workspace Layout */
.main-layout {
    display: flex;
    flex: 1;
    min-height: 0; /* Important for scroll */
    gap: 10px;
}

/* Sidebar Navigation */
.sidebar-nav {
    width: 240px;
    border: 2px solid var(--border-color);
    box-shadow: var(--border-glow);
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
    padding: 10px;
    gap: 15px;
    flex-shrink: 0;
}

.nav-title {
    font-family: var(--font-header);
    font-size: 20px;
    border-bottom: 2px double var(--border-color);
    padding-bottom: 5px;
    margin-bottom: 5px;
    text-align: center;
    text-shadow: var(--text-glow);
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    padding: 6px 10px;
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    background-color: var(--bg-color);
    border-color: var(--border-color);
    text-shadow: var(--text-glow);
    box-shadow: var(--border-glow);
}

.nav-icon {
    font-weight: bold;
}

/* Stats Card */
.stats-card {
    margin-top: auto;
    border: 1px dashed var(--border-color);
    padding: 8px;
}

.card-header {
    font-size: 11px;
    font-weight: bold;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 3px;
    margin-bottom: 5px;
}

.card-body {
    font-size: 11px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.card-body div {
    display: flex;
    justify-content: space-between;
}

.sec-badge {
    background-color: var(--led-red);
    color: #ffffff;
    padding: 0 3px;
    border-radius: 2px;
    font-size: 9px;
    font-weight: bold;
}

/* Content Viewport & Sections */
.content-viewport {
    flex: 1;
    border: 2px solid var(--border-color);
    box-shadow: var(--border-glow);
    background-color: var(--card-bg);
    overflow-y: auto;
    padding: 30px;
    position: relative;
    scroll-behavior: smooth;
}

.scroll-section {
    display: block;
    padding-bottom: 10px;
    scroll-margin-top: 15px;
}

.section-divider {
    border: none;
    border-top: 2px dashed var(--border-color);
    margin: 40px 0;
    opacity: 0.5;
}

/* Page Headers & Retro HR */
.vintage-header, .knuth-header, .rms-header, .stroustrup-header, .ritchie-header {
    margin-bottom: 25px;
}

.vintage-header h2, .knuth-header h2, .rms-header h2, .stroustrup-header h2, .ritchie-header h2 {
    font-family: var(--font-header);
    font-size: 36px;
    text-shadow: var(--text-glow);
    margin-bottom: 5px;
}

.ascii-banner {
    font-family: 'Courier Prime', monospace;
    font-size: 10px;
    line-height: 1.2;
    overflow-x: auto;
    white-space: pre;
    margin-bottom: 10px;
    text-shadow: var(--text-glow);
}

.subtitle, .knuth-quote, .rms-subtitle, .stroustrup-subtitle, .ritchie-subtitle {
    font-style: italic;
    opacity: 0.9;
    font-size: 14px;
}

.retro-hr {
    border: none;
    border-top: 2px double var(--border-color);
    margin: 15px 0;
}

.retro-hr-small {
    border: none;
    border-top: 1px dashed var(--border-color);
    margin: 10px 0;
}

/* Typography elements */
h2, h3, h4 {
    color: var(--text-color);
    text-shadow: var(--text-glow);
    margin-top: 20px;
    margin-bottom: 10px;
}

h2 { font-size: 24px; border-bottom: 1px solid var(--border-color); padding-bottom: 4px; }
h3 { font-size: 20px; }
h4 { font-size: 16px; }

p {
    margin-bottom: 15px;
}

a {
    color: var(--accent-color);
    text-decoration: underline;
}

a:hover {
    text-shadow: var(--text-glow);
}

ul, ol {
    margin-left: 25px;
    margin-bottom: 15px;
}

li {
    margin-bottom: 6px;
}

strong {
    color: var(--accent-color);
}

/* Home Layout Elements */
.home-grid {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.home-main {
    flex: 1;
}

.home-sidebar {
    width: 250px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.profile-frame {
    border: 2px solid var(--border-color);
    background-color: var(--bg-color);
    padding: 15px;
    text-align: center;
    box-shadow: var(--border-glow);
}

.pixel-avatar pre {
    font-family: 'Courier Prime', monospace;
    font-size: 11px;
    line-height: 1.1;
    margin-bottom: 10px;
    text-shadow: var(--text-glow);
}

.profile-info {
    font-size: 13px;
    text-align: left;
}

.profile-info strong {
    font-size: 16px;
    display: block;
    margin-bottom: 4px;
}

.info-tag {
    font-size: 10px;
    background-color: var(--border-color);
    color: var(--bg-color);
    padding: 1px 4px;
    border-radius: 2px;
    font-weight: bold;
}

.side-panel-box {
    border: 1px solid var(--border-color);
    padding: 12px;
    background-color: var(--bg-color);
}

.side-panel-box h4 {
    margin-top: 0;
    font-size: 13px;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 4px;
}

.reg-dump {
    font-family: 'Courier Prime', monospace;
    font-size: 11px;
    line-height: 1.3;
}

/* Dispatch Box */
.dispatch-box {
    border-left: 3px solid var(--border-color);
    padding-left: 15px;
    margin-bottom: 15px;
    font-size: 13px;
}

.dispatch-date {
    font-weight: bold;
    color: var(--accent-color);
    display: block;
    margin-bottom: 2px;
}

/* Note box */
.note-box {
    border: 1px dashed var(--border-color);
    background-color: var(--bg-color);
    padding: 15px;
    margin: 20px 0;
    font-size: 13px;
}

/* Tables */
.retro-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 13px;
}

.retro-table th, .retro-table td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

.retro-table th {
    background-color: var(--border-color);
    color: var(--bg-color);
    font-weight: bold;
}

.retro-table tr:nth-child(even) {
    background-color: var(--bg-color);
}

/* Errata lists */
.errata-list {
    list-style: none;
    margin-left: 0;
}

.errata-list li {
    border-bottom: 1px dashed var(--border-color);
    padding: 10px 0;
    font-size: 13px;
}

.errata-id {
    color: var(--accent-color);
    font-weight: bold;
    margin-right: 8px;
}

/* Donald Knuth Hex Checks */
.hex-check-preview {
    margin-top: 30px;
}

.retro-check {
    border: 2px solid var(--border-color);
    background-color: var(--bg-color);
    font-family: 'Courier Prime', 'EB Garamond', serif;
    padding: 20px;
    border-radius: 4px;
    max-width: 600px;
    position: relative;
    box-shadow: var(--border-glow);
}

.check-bank {
    font-size: 14px;
    font-weight: bold;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
    margin-bottom: 15px;
}

.check-date {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 12px;
}

.check-pay, .check-amount, .check-memo {
    font-size: 13px;
    margin-bottom: 12px;
}

.check-name, .check-val, .check-memo-text {
    font-weight: bold;
    text-decoration: underline;
    font-family: 'Courier Prime', monospace;
}

.check-sig {
    text-align: right;
    font-size: 14px;
    margin-top: 15px;
    border-top: 1px dashed var(--border-color);
    display: inline-block;
    float: right;
    padding-top: 5px;
}

.retro-check::after {
    content: "";
    display: table;
    clear: both;
}

/* RMS Manifesto & Stickers */
.rms-manifesto {
    border: 2px double var(--border-color);
    background-color: var(--bg-color);
    padding: 20px;
    margin: 25px 0;
    box-shadow: var(--border-glow);
}

.rms-manifesto h3 {
    margin-top: 0;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 5px;
}

.rms-manifesto ol li {
    margin-bottom: 10px;
}

.sticker-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 25px 0;
}

.retro-sticker {
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    font-size: 11px;
    font-weight: bold;
    background-color: var(--bg-color);
    border-radius: 3px;
    text-transform: uppercase;
    box-shadow: var(--border-glow);
}

/* code blocks */
.code-block {
    display: block;
    padding: 15px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    overflow-x: auto;
    font-family: 'Fira Code', 'Courier Prime', monospace;
    font-size: 12px;
    line-height: 1.4;
    margin: 15px 0;
}

.terminal-block {
    display: block;
    padding: 10px 15px;
    background-color: #000000;
    color: #33ff33;
    border: 1px solid var(--border-color);
    font-family: 'Courier Prime', monospace;
    font-size: 12px;
    line-height: 1.4;
    margin: 15px 0;
}

.code-keyword { color: #f92672; font-weight: bold; }
.code-comment { color: #75715e; font-style: italic; }
.code-string { color: #e6db74; }

/* Bjarne FAQ */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.faq-question {
    font-size: 16px;
    color: var(--accent-color);
    cursor: pointer;
    user-select: none;
    margin-top: 0;
}

.faq-question::before {
    content: "Q: ";
    font-weight: bold;
}

.faq-answer {
    margin-top: 10px;
    padding-left: 20px;
    font-size: 14px;
}

/* Terminal Page & Screen */
.terminal-container {
    display: flex;
    flex-direction: column;
    /* Classic VGA 640x480 form factor, centered; collapses on narrow screens. */
    width: 640px;
    max-width: 100%;
    height: 480px;
    margin: 0 auto;
    border: 2px solid var(--border-color);
    background-color: #000000;
    box-shadow: var(--border-glow);
}

.terminal-bar {
    display: flex;
    align-items: center;
    background-color: var(--card-bg);
    border-bottom: 2px solid var(--border-color);
    padding: 6px 12px;
    gap: 6px;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.red-dot { background-color: #ff5f56; }
.yellow-dot { background-color: #ffbd2e; }
.green-dot { background-color: #27c93f; }

.terminal-title {
    font-size: 11px;
    font-family: 'Courier Prime', monospace;
    margin-left: 10px;
    opacity: 0.8;
}

.terminal-screen {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-family: 'Courier Prime', 'Fira Code', monospace;
    font-size: 13px;
    color: var(--text-color);
    text-shadow: var(--text-glow);
}

.terminal-screen.vm-active {
    padding: 0;
    overflow: hidden;
}

.terminal-blurb {
    font-size: 0.85rem;
    line-height: 1.5;
    opacity: 0.85;
    max-width: 70ch;
    margin: 10px 0 18px;
}

.terminal-blurb code {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 0 4px;
}

/* RISC-V Linux VM (TinyEMU) iframe viewport */
#vm-container {
    width: 100%;
    height: 100%;
}

#vm-frame {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    background: var(--bg-color, #000);
}

.terminal-output {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.terminal-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.terminal-prompt {
    font-weight: bold;
    white-space: nowrap;
}

.terminal-input-element {
    flex: 1;
    background-color: transparent;
    border: none;
    outline: none;
    color: inherit;
    font-family: inherit;
    font-size: inherit;
    text-shadow: inherit;
}

/* Footer style */
.system-footer {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border: 2px solid var(--border-color);
    background-color: var(--card-bg);
    box-shadow: var(--border-glow);
    padding: 8px 15px;
    margin-top: 10px;
    font-size: 11px;
}

.footer-decor {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.counter-box {
    border: 1px solid var(--border-color);
    padding: 2px 6px;
    font-family: 'Courier Prime', monospace;
    background-color: var(--bg-color);
    font-weight: bold;
}

.viewed-in {
    opacity: 0.8;
}

.icon-netscape {
    font-size: 12px;
}

.copyright {
    text-align: center;
    opacity: 0.7;
    border-top: 1px dashed var(--border-color);
    padding-top: 5px;
    font-size: 10px;
}

/* Theme Paper Overrides (for RMS/Knuth Style) */
body.theme-paper {
    font-size: 16px;
    line-height: 1.6;
}

body.theme-paper .system-header,
body.theme-paper .sidebar-nav,
body.theme-paper .content-viewport,
body.theme-paper .system-footer,
body.theme-paper .retro-check,
body.theme-paper .rms-manifesto,
body.theme-paper .profile-frame {
    box-shadow: none;
    background-color: #ffffff;
    border-color: #222222;
}

body.theme-paper .retro-btn,
body.theme-paper .retro-select {
    background-color: #ffffff;
    border-color: #222222;
}

body.theme-paper h1,
body.theme-paper h2,
body.theme-paper h3,
body.theme-paper h4 {
    font-family: 'EB Garamond', 'Lora', serif;
    font-weight: bold;
    text-shadow: none;
}

body.theme-paper h2 {
    border-bottom: 2px solid #222222;
}

body.theme-paper a {
    color: #0000ee;
    text-decoration: underline;
}

body.theme-paper a:visited {
    color: #551a8b;
}

body.theme-paper .nav-link {
    border-color: transparent;
}

body.theme-paper .nav-link:hover,
body.theme-paper .nav-link.active {
    background-color: #f0ede0;
    border-color: #222222;
    text-shadow: none;
    box-shadow: none;
}

body.theme-paper .code-block {
    background-color: #f7f5ee;
    border-color: #bbbbbb;
    color: #000000;
}

body.theme-paper .terminal-block {
    background-color: #000000;
    color: #33ff33;
}

body.theme-paper .retro-check {
    background-color: #fcfcfc;
    border-style: solid;
}

body.theme-paper .retro-sticker {
    background-color: #f0ede0;
    border-color: #222222;
    box-shadow: none;
}

body.theme-paper .stats-card {
    border-color: #222222;
}

body.theme-paper .dispatch-box {
    border-left-color: #222222;
}

body.theme-paper .sec-badge {
    background-color: #bb0000;
}

body.theme-paper .terminal-container {
    border-color: #222222;
}

body.theme-paper .terminal-screen {
    color: #33ff33;
    text-shadow: 0 0 4px rgba(51, 255, 51, 0.5);
}

/* Animations */
@keyframes flickerIn {
    0% { opacity: 0.3; }
    50% { opacity: 0.7; }
    70% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Responsive Scaling */
@media (max-width: 1024px) {
    .app-container {
        height: auto;
        overflow-y: auto;
    }
    .main-layout {
        flex-direction: column;
        height: auto;
    }
    .sidebar-nav {
        width: 100%;
        height: auto;
    }
    body {
        overflow: auto;
        height: auto;
    }
    .content-viewport {
        height: 600px;
    }
    .home-grid {
        flex-direction: column;
    }
    .home-sidebar {
        width: 100%;
    }
    .retro-check {
        width: 100%;
    }
    .front-panel {
        display: none;
    }
}