/* CSS resets and custom variables for the retro ATC terminal */
:root {
    --bg-dark: #0a0c0b;
    --panel-bg: #111413;
    --crt-green: #33ff66;
    --crt-green-glow: rgba(51, 255, 102, 0.4);
    --crt-green-dim: #1e8f3e;
    --alert-red: #ff3333;
    --alert-red-glow: rgba(255, 51, 51, 0.5);
    --warn-amber: #ffaa00;
    --warn-amber-glow: rgba(255, 170, 0, 0.5);
    --select-blue: #00d2ff;
    --select-blue-glow: rgba(0, 210, 255, 0.5);
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    background-color: var(--bg-dark);
    color: var(--crt-green);
    font-family: var(--font-mono);
    font-size: 14px;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* CRT Screen Scanline Overlay */
body::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
    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));
    z-index: 9999;
    background-size: 100% 4px, 6px 100%;
    pointer-events: none;
    opacity: 0.15;
}

/* Top Dashboard Bar */
header {
    background-color: var(--panel-bg);
    border-bottom: 2px solid var(--crt-green-dim);
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    z-index: 10;
}

.terminal-title h1 {
    font-size: 20px;
    letter-spacing: 2px;
    text-shadow: 0 0 5px var(--crt-green);
    animation: blink-title 5s infinite;
}

.dashboard-stats {
    display: flex;
    gap: 30px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--crt-green-dim);
    margin-bottom: 3px;
}

.stat-value {
    font-size: 18px;
    font-weight: bold;
    text-shadow: 0 0 4px var(--crt-green);
}

.stat-value.alert {
    color: var(--alert-red);
    text-shadow: 0 0 4px var(--alert-red);
}

.stat-value.warning {
    color: var(--warn-amber);
    text-shadow: 0 0 4px var(--warn-amber);
}

/* Main Layout */
.main-layout {
    display: flex;
    flex: 1;
    height: calc(100vh - 62px);
    position: relative;
}

/* Panel Design */
.panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--crt-green-dim);
    display: flex;
    flex-direction: column;
    margin: 10px;
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.8);
    border-radius: 4px;
}

/* Left panel: Flight List */
.flight-panel {
    width: 320px;
    flex-shrink: 0;
}

/* Center panel: Radar Screen Container */
.radar-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-color: #030604;
}

/* Right panel: Chat / Console */
.console-panel {
    width: 380px;
    flex-shrink: 0;
}

/* Panel Header */
.panel-header {
    border-bottom: 1px solid var(--crt-green-dim);
    padding: 8px 12px;
    font-size: 11px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    background-color: rgba(51, 255, 102, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Scrollbars */
.scrollable {
    overflow-y: auto;
    flex: 1;
    padding: 10px;
}

.scrollable::-webkit-scrollbar {
    width: 8px;
}
.scrollable::-webkit-scrollbar-track {
    background: #090c0b;
    border-left: 1px solid rgba(51, 255, 102, 0.1);
}
.scrollable::-webkit-scrollbar-thumb {
    background: var(--crt-green-dim);
    border-radius: 4px;
}
.scrollable::-webkit-scrollbar-thumb:hover {
    background: var(--crt-green);
}

/* Flight strips list styles */
.flight-strips-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Individual Flight Strip (Paper/Terminal card) */
.flight-strip {
    border: 1px solid var(--crt-green-dim);
    background-color: rgba(0, 15, 5, 0.6);
    border-radius: 3px;
    padding: 10px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 4px;
    position: relative;
    transition: all 0.2s ease;
}

.flight-strip:hover {
    border-color: var(--crt-green);
    box-shadow: 0 0 5px var(--crt-green-glow);
}

.flight-strip.selected {
    border-color: var(--select-blue);
    background-color: rgba(0, 30, 40, 0.7);
    box-shadow: 0 0 8px var(--select-blue-glow);
}

.flight-strip.approach-state {
    border-color: var(--warn-amber);
    background-color: rgba(40, 30, 0, 0.6);
}

.strip-id {
    font-weight: bold;
    font-size: 16px;
    grid-column: 1;
    grid-row: 1;
    color: var(--crt-green);
    text-shadow: 0 0 3px var(--crt-green-glow);
}
.flight-strip.selected .strip-id {
    color: var(--select-blue);
    text-shadow: 0 0 3px var(--select-blue-glow);
}
.flight-strip.approach-state .strip-id {
    color: var(--warn-amber);
    text-shadow: 0 0 3px var(--warn-amber-glow);
}

.strip-type {
    font-size: 10px;
    color: var(--crt-green-dim);
    grid-column: 1;
    grid-row: 2;
    text-transform: uppercase;
}

.strip-param {
    font-size: 12px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.strip-label {
    font-size: 8px;
    color: var(--crt-green-dim);
    text-transform: uppercase;
}
.strip-val {
    font-weight: bold;
}

/* Radar screen and elements */
.radar-canvas-container {
    width: 700px;
    height: 700px;
    max-width: 100%;
    max-height: 100%;
    aspect-ratio: 1 / 1;
    position: relative;
    border: 2px solid var(--crt-green-dim);
    box-shadow: 0 0 30px rgba(0,0,0,0.9), inset 0 0 50px rgba(5, 20, 10, 0.9);
    border-radius: 50%;
    overflow: hidden;
    background-color: #030a05;
}

#radarCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Flash indicator on radar */
#chimeFlash {
    position: absolute;
    top: 15px;
    left: 15px;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    border: 2px solid var(--crt-green-dim);
    background-color: rgba(0,0,0,0.5);
    z-index: 5;
    transition: background-color 0.1s ease, box-shadow 0.1s ease;
}

#chimeFlash.flash {
    background-color: var(--crt-green);
    box-shadow: 0 0 15px var(--crt-green);
}

/* Console & Chat Output */
.console-log {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.console-msg {
    line-height: 1.4;
    word-break: break-word;
}
.console-msg .time {
    color: var(--crt-green-dim);
    margin-right: 8px;
}
.console-msg .sender {
    font-weight: bold;
    margin-right: 6px;
}
.console-msg.sender-pilot .sender {
    color: var(--crt-green);
}
.console-msg.sender-tower .sender {
    color: var(--select-blue);
}
.console-msg.sender-system {
    color: var(--warn-amber);
    font-style: italic;
}
.console-msg.sender-critical {
    color: var(--alert-red);
    font-weight: bold;
    animation: text-pulse 1s infinite alternate;
}

/* Command Prompt Input Area */
.console-input-area {
    border-top: 1px solid var(--crt-green-dim);
    padding: 10px;
    background-color: #0c0f0d;
}

.input-prompt-wrapper {
    display: flex;
    align-items: center;
    border: 1px solid var(--crt-green-dim);
    border-radius: 3px;
    padding: 6px 10px;
    background-color: rgba(0,0,0,0.4);
}

.prompt-prefix {
    color: var(--crt-green);
    font-weight: bold;
    margin-right: 8px;
    font-size: 14px;
    text-shadow: 0 0 3px var(--crt-green-glow);
}

#cmdInput {
    background: transparent;
    border: none;
    color: var(--crt-green);
    font-family: var(--font-mono);
    font-size: 14px;
    flex: 1;
    outline: none;
    text-shadow: 0 0 2px var(--crt-green-glow);
}

/* Overlay screens (Game Over, Victory, Game Start) */
.overlay-screen {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(5, 8, 6, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 100;
    border-radius: 50%;
    text-align: center;
    padding: 40px;
}

.overlay-screen.hidden {
    display: none !important;
}

.overlay-screen h2 {
    font-size: 32px;
    margin-bottom: 20px;
    letter-spacing: 3px;
}

.overlay-screen.game-over h2 {
    color: var(--alert-red);
    text-shadow: 0 0 10px var(--alert-red-glow);
}

.overlay-screen.victory h2 {
    color: var(--crt-green);
    text-shadow: 0 0 10px var(--crt-green-glow);
}

.overlay-details {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 30px;
    max-width: 500px;
}

.btn-primary {
    background-color: transparent;
    border: 2px solid var(--crt-green);
    color: var(--crt-green);
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: bold;
    padding: 12px 30px;
    cursor: pointer;
    border-radius: 4px;
    text-shadow: 0 0 4px var(--crt-green-glow);
    box-shadow: 0 0 5px rgba(51, 255, 102, 0.2);
    transition: all 0.2s ease;
    text-transform: uppercase;
}
.btn-primary:hover {
    background-color: var(--crt-green);
    color: var(--bg-dark);
    box-shadow: 0 0 15px var(--crt-green);
    text-shadow: none;
}

.overlay-screen.game-over .btn-primary {
    border-color: var(--alert-red);
    color: var(--alert-red);
    text-shadow: 0 0 4px var(--alert-red-glow);
    box-shadow: 0 0 5px rgba(255, 51, 51, 0.2);
}
.overlay-screen.game-over .btn-primary:hover {
    background-color: var(--alert-red);
    color: white;
    box-shadow: 0 0 15px var(--alert-red);
    text-shadow: none;
}

/* Audio control checkbox */
.audio-mute-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 11px;
}
.audio-mute-toggle input {
    cursor: pointer;
    accent-color: var(--crt-green);
}

/* Header Game speed / Controls */
.game-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}
.btn-control {
    background: transparent;
    border: 1px solid var(--crt-green-dim);
    color: var(--crt-green-dim);
    font-family: var(--font-mono);
    padding: 5px 12px;
    font-size: 12px;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.15s ease;
}
.btn-control:hover, .btn-control.active {
    color: var(--crt-green);
    border-color: var(--crt-green);
    box-shadow: 0 0 4px var(--crt-green-glow);
}

/* Custom indicator animations */
@keyframes blink-title {
    0%, 94%, 96%, 100% { opacity: 1; }
    95%, 97% { opacity: 0.85; }
}

@keyframes text-pulse {
    from { text-shadow: 0 0 2px var(--alert-red-glow); }
    to { text-shadow: 0 0 8px var(--alert-red); }
}

/* Legend/Hints info bar */
.cmd-legend {
    padding: 8px;
    font-size: 10px;
    color: var(--crt-green-dim);
    border-top: 1px solid rgba(51, 255, 102, 0.1);
    background-color: rgba(0,0,0,0.2);
}
.cmd-legend span {
    color: var(--crt-green);
}