:root {
    --bg-color: #000000;
    --panel-bg: #0a0a0a;
    --border-color: #222222;
    --border-hover: #444444;
    --accent: #ffffff;
    --danger: #ff2a2a;
    --success: #ffffff;
    /* Primary Blue instead of Green */
    --text: #ffffff;
    --text-muted: #888888;
    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

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

/* Background overlay pattern */
.system-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    pointer-events: none;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: rgba(3, 3, 3, 0.9);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo h1 {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 4px;
    color: #fff;
}

.logo .accent {
    color: var(--text-muted);
}

.logo .subtitle {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-top: 4px;
}

.connection-group {
    display: flex;
    align-items: center;
    gap: 24px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: 0;
    /* Square dot */
}

.dot.connected {
    background: var(--success);
}

/* Buttons */
.btn {
    background: var(--panel-bg);
    color: var(--text);
    border: 1px solid var(--border-color);
    padding: 0.8rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
}

.btn.outline {
    background: transparent;
    border: 1px dashed var(--border-color);
    color: var(--text-muted);
}

.btn.outline:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}

.btn:hover:not(:disabled) {
    background: #151a25;
    border-color: var(--border-hover);
}

.btn.primary {
    border-color: var(--accent);
    color: var(--accent);
}

.btn.primary:hover:not(:disabled) {
    background: rgba(0, 195, 255, 0.1);
}

.btn.success {
    border-color: var(--success);
    color: var(--success);
}

.btn.success:hover:not(:disabled) {
    background: rgba(0, 136, 255, 0.1);
}

.btn.danger {
    border-color: var(--danger);
    color: var(--danger);
}

.btn.danger:hover:not(:disabled) {
    background: rgba(255, 42, 42, 0.1);
}

.btn.active-profile {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    font-weight: 800;
}

.full-width {
    width: 100%;
}

.mt-1 {
    margin-top: 1rem;
}

.mt-2 {
    margin-top: 2rem;
}

.mb-1 {
    margin-bottom: 1rem;
}

.pb-1 {
    padding-bottom: 1rem;
}

.btn-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.panel-subtitle {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-align: left;
}

/* Grid Layout */
main {
    padding: 1rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* 3 Second Flash Overlay */
.flash-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    font-family: var(--font-mono);
    font-weight: bold;
    letter-spacing: 2px;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.flash-overlay.show {
    opacity: 1;
}

/* Remote Override Modal */
.takeover-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.98);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.takeover-modal.show {
    opacity: 1;
    pointer-events: all;
}

.takeover-modal h2 {
    color: var(--danger);
    font-family: var(--font-mono);
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.dpad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.dpad-middle {
    display: flex;
    gap: 1rem;
}

.dpad .btn {
    padding: 1.5rem 2rem;
    font-size: 1.2rem;
    min-width: 140px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
}

.sys-panel {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    padding: 24px;
    position: relative;
}

.sys-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--border-hover);
    border-left: 2px solid var(--border-hover);
}

.sys-panel::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--border-hover);
    border-right: 2px solid var(--border-hover);
}

.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 1rem;
}

.mt-2 {
    margin-top: 2rem;
}

.panel-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 24px;
    font-weight: 400;
}

/* Telemetry display */
.live-stats {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    margin: 40px 0;
}

.temp-circle {
    position: relative;
    padding: 40px 0;
    width: 100%;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.hero-temp {
    font-family: var(--font-mono);
    font-size: 4.5rem;
    font-weight: 400;
    color: var(--accent);
    letter-spacing: -2px;
}

.unit {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--text-muted);
    vertical-align: top;
}

.stat-block .label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.stat-block .value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: #fff;
}

.stage-val {
    color: var(--accent) !important;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Graph Panel */
.graph-panel {
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.graph-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.live-badge {
    font-family: var(--font-mono);
    color: var(--danger);
    font-size: 0.65rem;
    letter-spacing: 2px;
    opacity: 0;
}

.connected .live-badge {
    opacity: 1;
    animation: blink 1s infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.chart-container {
    flex: 1;
    position: relative;
    width: 100%;
    margin-top: 20px;
}

/* Editor Panel */
.editor-panel {
    grid-column: 1 / -1;
    margin-top: 24px;
}

.editor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stage-col {
    padding: 0;
    border-left: 1px solid var(--border-color);
    padding-left: 20px;
}

.stage-col h3 {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.stage-col label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.stage-col input {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: #fff;
    padding: 4px 0;
    width: 60px;
    font-family: var(--font-mono);
    font-size: 1rem;
    text-align: right;
    transition: all 0.3s;
}

.stage-col input:focus {
    outline: none;
    border-bottom-color: var(--accent);
}

/* Mobile Responsive Adjustments */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .graph-panel {
        min-height: 350px;
    }

    .editor-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 24px;
    }

    .stage-col {
        border-left: none;
        border-top: 1px solid var(--border-color);
        padding-left: 0;
        padding-top: 20px;
    }
}

@media (max-width: 640px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 1.5rem;
    }

    .connection-group {
        width: 100%;
        justify-content: space-between;
        flex-direction: row-reverse;
    }

    main {
        padding: 1.5rem;
    }

    .editor-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .hero-temp {
        font-size: 3.5rem;
    }
}