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

:root {
    --terminal-green: #00ff41;
    --terminal-bg: #000000;
    --terminal-dark: #001a00;
    --terminal-glow: #00ff4180;
    --terminal-border: #00ff41;
    --terminal-dim: #008f11;
}

/* Light mode - vintage amber/tan terminal */
body.light-mode {
    --terminal-green: #8b4513;
    --terminal-bg: #f4e8d0;
    --terminal-dark: #e8dcc4;
    --terminal-glow: #8b451380;
    --terminal-border: #8b4513;
    --terminal-dim: #a0522d;
}

body.light-mode .scanlines {
    opacity: 0.3;
}

body.light-mode .crt-overlay {
    background: radial-gradient(ellipse at center, transparent 0%, rgba(139, 69, 19, 0.1) 100%);
}

/* Adjust text shadow for light mode */
body.light-mode {
    text-shadow: 0 0 3px rgba(139, 69, 19, 0.3);
}

body.light-mode .node-label {
    text-shadow: 0 0 3px var(--terminal-bg), 0 0 6px rgba(139, 69, 19, 0.4);
}

/* Light mode link styling */
body.light-mode .link {
    stroke-opacity: 0.7;
}

body.light-mode .link.highlighted {
    stroke-opacity: 1;
    filter: drop-shadow(0 0 3px var(--terminal-border));
}

/* Light mode node glow */
body.light-mode .node {
    filter: drop-shadow(0 0 2px rgba(139, 69, 19, 0.4));
}

body.light-mode .node:hover {
    filter: brightness(0.8) drop-shadow(0 0 6px var(--terminal-border));
}

body.light-mode .node.highlighted {
    filter: brightness(0.7) drop-shadow(0 0 10px var(--terminal-border));
}

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

body {
    font-family: 'IBM Plex Mono', 'Courier New', monospace;
    background: var(--terminal-bg);
    color: var(--terminal-green);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    position: relative;
}

/* CRT Effects */
.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    pointer-events: none;
    z-index: 9999;
}

.scanlines {
    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: 9998;
    animation: scanline-move 8s linear infinite;
}

@keyframes scanline-move {
    0% { transform: translateY(0); }
    100% { transform: translateY(10px); }
}

/* Terminal Container */
.terminal-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--terminal-bg);
    text-shadow: 0 0 5px var(--terminal-glow);
}

/* Header Bar */
.header-bar {
    background: var(--terminal-dark);
    border-bottom: 2px solid var(--terminal-border);
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
}

.header-title {
    color: var(--terminal-green);
}

.header-status {
    color: var(--terminal-green);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    gap: 2px;
    background: var(--terminal-dark);
    padding: 2px;
}

/* Sidebar */
.sidebar {
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    padding: 8px;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
}

.sidebar-toggle {
    display: none; /* Hidden by default on desktop */
}

.panel {
    border: 1px solid var(--terminal-border);
    background: var(--terminal-bg);
}

.panel-title {
    background: var(--terminal-dark);
    padding: 6px 12px;
    text-align: center;
    font-weight: 600;
    border-bottom: 1px solid var(--terminal-border);
    letter-spacing: 2px;
}

.panel-content {
    padding: 12px;
}

/* Filter Sections */
.filter-section {
    margin-bottom: 16px;
}

.section-label {
    color: var(--terminal-green);
    margin-bottom: 8px;
    font-size: 12px;
    letter-spacing: 1px;
}

/* Time Controls */
.time-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.year-input {
    width: 70px;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    color: var(--terminal-green);
    padding: 4px 8px;
    font-family: inherit;
    font-size: 13px;
    text-align: center;
}

.year-input:focus {
    outline: none;
    box-shadow: 0 0 8px var(--terminal-glow);
}

.range-separator {
    font-size: 11px;
    color: var(--terminal-dim);
}

.slider-container {
    position: relative;
    height: 30px;
}

.year-slider {
    position: absolute;
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    outline: none;
}

.year-slider::-webkit-slider-track {
    height: 2px;
    background: var(--terminal-border);
}

.year-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--terminal-green);
    cursor: pointer;
    border: 1px solid var(--terminal-bg);
    box-shadow: 0 0 8px var(--terminal-glow);
}

.year-slider::-moz-range-track {
    height: 2px;
    background: var(--terminal-border);
}

.year-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: var(--terminal-green);
    cursor: pointer;
    border: 1px solid var(--terminal-bg);
    box-shadow: 0 0 8px var(--terminal-glow);
}

.year-slider:first-of-type {
    top: 0;
}

.year-slider:last-of-type {
    top: 15px;
}

/* Tags List */
.tags-list {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--terminal-border);
    padding: 8px;
    margin-bottom: 8px;
    background: var(--terminal-dark);
}

.tag-item {
    display: flex;
    align-items: center;
    padding: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.1s;
}

.tag-item:hover {
    background: var(--terminal-border);
    color: var(--terminal-bg);
}

.tag-checkbox {
    margin-right: 8px;
    cursor: pointer;
}

/* Buttons */
.terminal-button {
    width: 100%;
    background: var(--terminal-dark);
    border: 1px solid var(--terminal-border);
    color: var(--terminal-green);
    padding: 8px 16px;
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 1px;
    transition: all 0.15s;
    margin-top: 4px;
}

.terminal-button:hover {
    background: var(--terminal-border);
    color: var(--terminal-bg);
    box-shadow: 0 0 12px var(--terminal-glow);
}

.terminal-button:active {
    transform: translateY(1px);
}

.apply-button {
    margin-top: 16px;
    background: var(--terminal-border);
    color: var(--terminal-bg);
    font-size: 14px;
}

/* Stats */
.stats-content {
    font-size: 13px;
}

.stat-line {
    padding: 6px 0;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dotted var(--terminal-dim);
}

.stat-line:last-child {
    border-bottom: none;
}

.stat-line span {
    color: var(--terminal-green);
    font-weight: 600;
}

/* Graph Area */
.graph-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    margin: 8px;
}

.graph-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}

.graph-title {
    padding: 6px 12px;
    text-align: center;
    border-bottom: 1px solid var(--terminal-border);
    background: var(--terminal-dark);
    font-weight: 600;
    letter-spacing: 2px;
}

#graph-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

#graph-container svg {
    width: 100%;
    height: 100%;
}

.graph-controls {
    padding: 6px 12px;
    border-top: 1px solid var(--terminal-border);
    background: var(--terminal-dark);
    text-align: center;
}

.control-hint {
    font-size: 11px;
    color: var(--terminal-dim);
    letter-spacing: 1px;
}

/* Details Panel */
.details-panel {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: var(--terminal-bg);
    border-top: 2px solid var(--terminal-border);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.details-panel.visible {
    transform: translateY(0);
}

.details-header {
    padding: 8px 16px;
    background: var(--terminal-dark);
    border-bottom: 1px solid var(--terminal-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.details-title {
    font-weight: 600;
    letter-spacing: 2px;
}

.close-button {
    background: transparent;
    border: 1px solid var(--terminal-border);
    color: var(--terminal-green);
    padding: 4px 12px;
    font-family: inherit;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s;
}

.close-button:hover {
    background: var(--terminal-border);
    color: var(--terminal-bg);
}

.details-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    font-size: 13px;
    line-height: 1.6;
}

.detail-section {
    margin-bottom: 16px;
    border: 1px solid var(--terminal-border);
    padding: 12px;
}

.detail-title {
    color: var(--terminal-green);
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.detail-item {
    padding: 6px 0;
    border-bottom: 1px dotted var(--terminal-dim);
}

.detail-item:last-child {
    border-bottom: none;
}

.letter-link {
    color: var(--terminal-green);
    text-decoration: none;
    border-bottom: 1px solid var(--terminal-dim);
    transition: all 0.15s;
}

.letter-link:hover {
    background: var(--terminal-border);
    color: var(--terminal-bg);
    border-bottom-color: var(--terminal-bg);
}

/* Footer Bar */
.footer-bar {
    background: var(--terminal-dark);
    border-top: 2px solid var(--terminal-border);
    padding: 6px 16px;
    display: flex;
    gap: 24px;
    font-size: 11px;
    letter-spacing: 1px;
}

.footer-bar span {
    color: var(--terminal-dim);
}

#cursor-blink {
    margin-left: auto;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Tooltip */
.graph-tooltip {
    position: absolute;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    padding: 8px 12px;
    font-size: 12px;
    pointer-events: none;
    z-index: 1000;
    box-shadow: 0 0 12px var(--terminal-glow);
    display: none;
}

.graph-tooltip.visible {
    display: block;
}

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

::-webkit-scrollbar-track {
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
}

::-webkit-scrollbar-thumb {
    background: var(--terminal-border);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--terminal-green);
}

/* ===== MOBILE RESPONSIVE STYLES ===== */

@media (max-width: 768px) {
    /* Reduce CRT effects on mobile for performance */
    .scanlines {
        display: none;
    }
    
    .crt-overlay {
        opacity: 0.3;
    }
    
    body {
        text-shadow: 0 0 2px var(--terminal-glow);
    }
    
    /* Stack layout vertically */
    .main-content {
        flex-direction: column;
        padding: 0;
        gap: 0;
    }
    
    /* Collapsible sidebar on mobile - full screen overlay */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100vh;
        border: none;
        padding: 0;
        gap: 0;
        overflow-y: auto;
        transition: transform 0.3s ease;
        z-index: 1000;
        background: var(--terminal-bg);
    }
    
    .sidebar.collapsed {
        transform: translateY(calc(-100% + 60px));
        overflow: visible;
    }
    
    .sidebar-toggle {
        display: block;
        width: 100%;
        padding: 12px;
        background: var(--terminal-dark);
        border: 1px solid var(--terminal-border);
        border-left: none;
        border-right: none;
        color: var(--terminal-green);
        font-family: inherit;
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        text-align: center;
        margin-bottom: 0;
        position: sticky;
        top: 0;
        z-index: 1001;
    }
    
    .sidebar-toggle:active {
        background: var(--terminal-border);
        color: var(--terminal-bg);
    }
    
    .sidebar-content {
        padding: 8px;
        overflow-y: auto;
        height: calc(100vh - 60px);
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    
    .sidebar.collapsed .sidebar-content {
        display: none;
    }
    
    /* Make panels fit in mobile full-screen mode */
    .sidebar .panel {
        border: 1px solid var(--terminal-border);
    }
    
    /* Compact panels */
    .panel {
        margin-bottom: 4px;
    }
    
    .panel-title {
        padding: 4px 8px;
        font-size: 12px;
        letter-spacing: 1px;
    }
    
    .panel-content {
        padding: 8px;
    }
    
    /* Compact filters */
    .filter-section {
        margin-bottom: 10px;
    }
    
    .section-label {
        font-size: 11px;
        margin-bottom: 6px;
    }
    
    /* Larger touch targets */
    .terminal-button {
        padding: 10px 16px;
        font-size: 13px;
        min-height: 44px;
        margin-top: 6px;
    }
    
    .tag-item {
        padding: 8px;
        font-size: 13px;
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .tag-checkbox {
        width: 20px;
        height: 20px;
        margin-right: 12px;
    }
    
    /* Time controls */
    .time-controls {
        flex-wrap: wrap;
        gap: 6px;
    }
    
    .year-input {
        width: 80px;
        padding: 8px;
        font-size: 14px;
        min-height: 44px;
    }
    
    .range-separator {
        font-size: 12px;
        padding: 0 4px;
    }
    
    /* Slider adjustments */
    .slider-container {
        height: 40px;
        margin-top: 8px;
    }
    
    .year-slider::-webkit-slider-thumb {
        width: 20px;
        height: 20px;
    }
    
    .year-slider::-moz-range-thumb {
        width: 20px;
        height: 20px;
    }
    
    /* Tags list */
    .tags-list {
        max-height: 150px;
    }
    
    /* Graph area takes full remaining space */
    .graph-area {
        flex: 1;
        height: 100vh;
        margin: 0;
        border-left: none;
        border-right: none;
    }
    
    .graph-title {
        padding: 4px 8px;
        font-size: 12px;
    }
    
    .graph-controls {
        padding: 4px 8px;
    }
    
    .control-hint {
        font-size: 10px;
    }
    
    /* Header adjustments */
    .header-bar {
        padding: 6px 10px;
        font-size: 11px;
        flex-wrap: wrap;
        position: relative;
        z-index: 999;
    }
    
    .header-title {
        font-size: 11px;
        order: 1;
        width: 100%;
        margin-bottom: 4px;
        text-align: center;
    }
    
    .header-status {
        font-size: 10px;
        order: 2;
        width: 100%;
        text-align: center;
    }
    
    /* Footer adjustments */
    .footer-bar {
        padding: 4px 8px;
        font-size: 9px;
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .footer-bar span {
        display: none; /* Hide keyboard shortcuts on mobile */
    }
    
    #cursor-blink {
        display: inline-block;
        margin: 0;
    }
    
    /* Stats panel */
    .stats-content {
        font-size: 12px;
    }
    
    .stat-line {
        padding: 4px 0;
    }
    
    /* Details panel adjustments */
    .details-panel {
        height: 60vh;
        z-index: 998;
    }
    
    .details-header {
        padding: 6px 10px;
        flex-wrap: wrap;
    }
    
    .details-title {
        font-size: 11px;
        order: 1;
        width: 100%;
        margin-bottom: 4px;
    }
    
    .close-button {
        padding: 8px 16px;
        font-size: 12px;
        min-height: 44px;
        order: 2;
        width: 100%;
    }
    
    .details-content {
        padding: 10px;
        font-size: 12px;
    }
    
    .detail-section {
        margin-bottom: 12px;
        padding: 10px;
    }
    
    .detail-title {
        font-size: 12px;
        margin-bottom: 6px;
    }
    
    .detail-item {
        padding: 8px 0;
        font-size: 11px;
    }
    
    /* Graph elements - larger for touch */
    .node {
        cursor: pointer;
    }
    
    .node-label {
        font-size: 9px;
    }
    
    /* Tooltip adjustments */
    .graph-tooltip {
        font-size: 11px;
        padding: 6px 10px;
        max-width: 200px;
    }
    
    /* Loading indicator */
    .loading-indicator {
        font-size: 14px;
    }
    
    .loading-bar {
        width: 150px;
    }
}

/* Desktop override - ensure mobile styles don't apply */
@media (min-width: 769px) {
    .sidebar {
        position: relative !important;
        transform: none !important;
        height: auto !important;
        z-index: auto !important;
        top: auto !important;
        left: auto !important;
        right: auto !important;
        bottom: auto !important;
        width: 320px !important;
        padding: 8px !important;
        border: 1px solid var(--terminal-border) !important;
    }
    
    .sidebar-toggle {
        display: none !important;
    }
    
    .sidebar-content {
        display: contents !important;
        height: auto !important;
        padding: 0 !important;
    }
    
    .sidebar.collapsed {
        transform: none !important;
        overflow-y: auto !important;
    }
    
    .sidebar.collapsed .sidebar-content {
        display: contents !important;
    }
}

/* Extra small devices (phones in portrait) */
@media (max-width: 480px) {
    .header-bar {
        font-size: 10px;
    }
    
    .header-title {
        font-size: 10px;
    }
    
    .panel-title {
        font-size: 11px;
    }
    
    .terminal-button {
        font-size: 12px;
    }
    
    .graph-area {
        min-height: 40vh;
    }
    
    .node-label {
        font-size: 8px;
    }
    
    /* Simplify sidebar on very small screens */
    .sidebar {
        max-height: 40vh;
    }
    
    .tags-list {
        max-height: 120px;
    }
}

/* Loading state */
.loading-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    font-size: 16px;
    z-index: 200;
}

.loading-text {
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: var(--terminal-dark);
    border: 1px solid var(--terminal-border);
    position: relative;
    overflow: hidden;
}

.loading-progress {
    height: 100%;
    background: var(--terminal-green);
    width: 0;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% { width: 0; }
    50% { width: 100%; }
    100% { width: 0; }
}

/* Graph nodes and links styling */
.node {
    cursor: pointer;
    transition: r 0.15s;
    filter: drop-shadow(0 0 4px var(--terminal-glow));
}

.node:hover {
    filter: brightness(1.5) drop-shadow(0 0 8px var(--terminal-green));
}

.link {
    stroke: var(--terminal-border);
    stroke-opacity: 0.8;
    min-width: 1.5px;
}

.link.highlighted {
    stroke: var(--terminal-green);
    stroke-opacity: 1;
    stroke-width: 3px !important;
    filter: drop-shadow(0 0 4px var(--terminal-green));
}

.node.highlighted {
    filter: brightness(1.8) drop-shadow(0 0 12px var(--terminal-green));
}

.node-label {
    fill: var(--terminal-green);
    font-size: 11px;
    font-family: 'IBM Plex Mono', monospace;
    pointer-events: none;
    text-shadow: 0 0 4px var(--terminal-bg), 0 0 8px var(--terminal-glow);
    font-weight: 600;
}

.node.dimmed {
    opacity: 0.2;
}

.link.dimmed {
    opacity: 0.1;
}

.node-label.dimmed {
    opacity: 0.2;
}