/* ─────────────────────────────────────────────────────
   DRDO ID26053 — Vanilla CSS HUD Stylesheet
   No Tailwind. Pure CSS with CSS custom properties.
───────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Rajdhani:wght@500;600;700&display=swap');

/* ── Reset & Base ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --cyan:    #00f3ff;
    --green:   #10b981;
    --amber:   #f59e0b;
    --red:     #ef4444;
    --blue:    #3b82f6;
    --purple:  #a855f7;

    --bg-deep:   #020408;
    --bg-panel:  rgba(4, 8, 16, 0.95);
    --bg-card:   rgba(6, 11, 22, 0.9);
    --border:    rgba(0, 243, 255, 0.22);
    --text-dim:  #4a6a7a;
    --text-muted: #64748b;
    --text-base: #94a3b8;

    --font-mono: 'Share Tech Mono', monospace;
    --font-hud:  'Rajdhani', sans-serif;

    --sidebar-w: 210px;
}

html, body {
    width: 100%; height: 100%;
    overflow: hidden;
    background: var(--bg-deep);
    color: var(--text-base);
    font-family: var(--font-mono);
    font-size: 11px;
    user-select: none;
    -webkit-font-smoothing: antialiased;
}

/* ── Scanlines Overlay ────────────────────────────── */
.scanlines {
    position: fixed; inset: 0;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px, transparent 2px,
        rgba(0,0,0,0.28) 2px, rgba(0,0,0,0.28) 3px
    );
    pointer-events: none;
    z-index: 100;
    opacity: 0.4;
}

/* ── Layout Shell ─────────────────────────────────── */
body {
    display: flex;
    flex-direction: row;
}

/* ════════════════════════════════════════════════════
   SIDEBAR
════════════════════════════════════════════════════ */
.sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--bg-panel);
    border-right: 1px solid rgba(0,243,255,0.18);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 20;
    padding: 12px 10px;
    scrollbar-width: thin;
    scrollbar-color: #004466 #020610;
}

/* ── Sidebar Header ───────────────────────────────── */
.sidebar__header {
    margin-bottom: 10px;
}

.sidebar__header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.badge {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.12em;
    color: var(--cyan);
    border: 1px solid rgba(0,243,255,0.35);
    padding: 1px 4px;
    text-transform: uppercase;
}

.status-online {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 9px;
    color: var(--green);
    letter-spacing: 0.08em;
}

.status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 6px var(--green);
    animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.8); }
}

.sidebar__title {
    font-family: var(--font-hud);
    font-size: 22px;
    font-weight: 700;
    color: #7ee8f0;
    letter-spacing: 0.06em;
    line-height: 1;
    margin-bottom: 2px;
    text-shadow: 0 0 16px rgba(0,243,255,0.35);
}

.sidebar__subtitle {
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
    line-height: 1.5;
    letter-spacing: 0.05em;
}

.divider-glow {
    height: 1px;
    margin-top: 8px;
    background: linear-gradient(to right, var(--cyan), rgba(0,243,255,0.15), transparent);
}

/* ── Sidebar Sections ─────────────────────────────── */
.sidebar__section {
    margin-bottom: 8px;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-muted);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 6px;
    margin-top: 6px;
}

/* ── Metric Cards ─────────────────────────────────── */
.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 7px 8px;
    margin-bottom: 5px;
}

.metric-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2px;
}

.metric-card__name {
    font-size: 9px;
    color: rgba(0,243,255,0.7);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.metric-card__sub {
    font-size: 8px;
    color: var(--text-muted);
    text-transform: uppercase;
}
.metric-card__sub.amber { color: var(--amber); font-weight: bold; }

.metric-card__value {
    font-family: var(--font-hud);
    font-size: 24px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: 0.02em;
}
.metric-card__value.green  { color: var(--green); text-shadow: 0 0 12px rgba(16,185,129,0.5); }
.metric-card__value.cyan   { color: var(--cyan);  text-shadow: 0 0 12px rgba(0,243,255,0.4); }
.metric-card__value.amber  { color: var(--amber); text-shadow: 0 0 12px rgba(245,158,11,0.45); }

.metric-card__value .unit {
    font-size: 13px;
    font-weight: 500;
    opacity: 0.75;
}

.metric-card__row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.metric-card__strike {
    font-size: 9px;
    color: var(--text-muted);
    text-decoration: line-through;
}

/* ── Metric Bar ───────────────────────────────────── */
.metric-bar {
    height: 2px;
    background: rgba(255,255,255,0.07);
    margin-top: 5px;
    border-radius: 1px;
    overflow: hidden;
}
.metric-bar__fill {
    height: 100%;
    border-radius: 1px;
    transition: width 0.6s ease;
}
.metric-bar__fill.green { background: var(--green); box-shadow: 0 0 6px var(--green); }
.metric-bar__fill.amber { background: var(--amber); box-shadow: 0 0 6px var(--amber); }

/* ── Legend Card ──────────────────────────────────── */
.legend-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 7px 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 10px;
    color: var(--text-base);
}

.legend-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.legend-dot.green  { background: var(--green);  box-shadow: 0 0 6px var(--green); }
.legend-dot.amber  { background: var(--amber);  box-shadow: 0 0 6px var(--amber); }
.legend-dot.red    { background: var(--red);    box-shadow: 0 0 6px var(--red); }
.legend-dot.purple { background: var(--purple); box-shadow: 0 0 6px var(--purple); }
.legend-dot.blue   { background: var(--cyan);   box-shadow: 0 0 6px var(--cyan); }

/* ── Sidebar Footer ───────────────────────────────── */
.sidebar__footer {
    margin-top: auto;
    padding-top: 8px;
    border-top: 1px solid rgba(0,243,255,0.1);
    font-size: 9px;
    color: var(--text-dim);
    line-height: 1.6;
    letter-spacing: 0.04em;
}

/* ════════════════════════════════════════════════════
   VIEWPORT GRID
════════════════════════════════════════════════════ */
.viewport-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 6px;
    padding: 8px;
    position: relative;
    min-width: 0;
    /* subtle dot-grid background */
    background-image:
        radial-gradient(circle, rgba(0,243,255,0.07) 1px, transparent 1px),
        linear-gradient(rgba(0,243,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,243,255,0.025) 1px, transparent 1px);
    background-size: 20px 20px, 40px 40px, 40px 40px;
}

/* ── Viewport Panel ───────────────────────────────── */
.vp-panel {
    position: relative;
    background: rgba(3, 7, 17, 0.92);
    border: 1px solid rgba(0,243,255,0.2);
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.vp-panel:hover {
    border-color: rgba(0,243,255,0.45);
    box-shadow: 0 0 14px rgba(0,243,255,0.08) inset;
}

.vp-panel--highlight {
    border-color: rgba(0,243,255,0.5);
    box-shadow: 0 0 20px rgba(0,243,255,0.12) inset;
}

/* ── Corner Brackets ──────────────────────────────── */
.vp-corner {
    position: absolute;
    width: 9px; height: 9px;
    border-color: rgba(0,243,255,0.6);
    pointer-events: none;
    z-index: 15;
}
.vp-corner.cyan { border-color: var(--cyan); }

.vp-corner.tl { top: -1px; left: -1px;  border-top: 2px solid; border-left: 2px solid; }
.vp-corner.tr { top: -1px; right: -1px; border-top: 2px solid; border-right: 2px solid; }
.vp-corner.bl { bottom: -1px; left: -1px;  border-bottom: 2px solid; border-left: 2px solid; }
.vp-corner.br { bottom: -1px; right: -1px; border-bottom: 2px solid; border-right: 2px solid; }

/* ── Viewport Header ──────────────────────────────── */
.vp-header {
    position: absolute;
    top: 0; left: 0; right: 0;
    z-index: 12;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 8px;
    pointer-events: none;
    background: linear-gradient(to bottom, rgba(3,7,17,0.85) 0%, transparent 100%);
}

/* Let interactive elements inside the header receive clicks */
.vp-header button,
.vp-header a {
    pointer-events: auto;
}

.vp-title {
    font-family: var(--font-hud);
    font-size: 11px;
    font-weight: 600;
    color: #7ee8f0;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: rgba(3,7,17,0.82);
    border: 1px solid rgba(0,243,255,0.25);
    padding: 2px 7px;
}

.vp-title.bright {
    color: var(--cyan);
    border-color: rgba(0,243,255,0.55);
    text-shadow: 0 0 10px rgba(0,243,255,0.4);
}

.vp-btn {
    pointer-events: auto;
    background: rgba(3,7,17,0.82);
    border: 1px solid rgba(0,243,255,0.3);
    color: rgba(0,243,255,0.7);
    font-family: var(--font-mono);
    font-size: 9px;
    padding: 2px 6px;
    cursor: pointer;
    letter-spacing: 0.06em;
    transition: border-color 0.15s, color 0.15s;
}
.vp-btn:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}

.vp-alert {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--red);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 2px 5px;
    border: 1px solid rgba(239,68,68,0.35);
    background: rgba(239,68,68,0.08);
}

.vp-badge-bottom {
    position: absolute;
    bottom: 6px; right: 6px;
    z-index: 12;
    background: rgba(3,7,17,0.88);
    border: 1px solid rgba(16,185,129,0.5);
    color: var(--green);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.06em;
    padding: 2px 6px;
    pointer-events: none;
    text-transform: uppercase;
}

/* ── Viewport Mini Legend (Visible ONLY in Fullscreen) ─────────────── */
.vp-legend {
    position: absolute;
    bottom: 14px;
    left: 14px;
    z-index: 20;
    background: rgba(3, 7, 18, 0.92);
    border: 1px solid rgba(0, 243, 255, 0.4);
    border-radius: 3px;
    padding: 6px 10px;
    display: none; /* Hidden in 2x2 minimap grid */
    flex-direction: column;
    gap: 4px;
    pointer-events: none;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.8), 0 0 12px rgba(0, 243, 255, 0.15);
}

.vp-panel.maximized .vp-legend {
    display: flex; /* Shown only when maximized */
}

.vp-legend-title {
    font-family: var(--font-hud);
    font-size: 9.5px;
    color: var(--cyan);
    letter-spacing: 0.12em;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 2px;
    opacity: 0.95;
    text-shadow: 0 0 8px rgba(0, 243, 255, 0.4);
}

.vp-legend-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.vp-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    min-width: 8px;
    min-height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.vp-dot.green   { background: #10b981 !important; box-shadow: 0 0 8px #10b981 !important; }
.vp-dot.amber   { background: #f59e0b !important; box-shadow: 0 0 8px #f59e0b !important; }
.vp-dot.red     { background: #ef4444 !important; box-shadow: 0 0 8px #ef4444 !important; }
.vp-dot.purple  { background: #a855f7 !important; box-shadow: 0 0 8px #a855f7 !important; }
.vp-dot.blue    { background: #00f3ff !important; box-shadow: 0 0 8px #00f3ff !important; }
.vp-dot.grey    { background: #64748b !important; box-shadow: 0 0 8px #64748b !important; }

/* ── Canvas Container ─────────────────────────────── */
.vp-canvas {
    position: absolute;
    inset: 0;
    cursor: grab;
}
.vp-canvas:active { cursor: grabbing; }

/* ── Fullscreen Maximize ──────────────────────────── */
/* ── Fast Fullscreen Expand — GPU-accelerated ────────── */

/* Panel base: NO expensive top/left/width/height transitions */
.vp-panel {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Maximized: instantly fixed, animates in via scale keyframe */
.vp-panel.maximized {
    position: fixed !important;
    z-index: 55 !important;
    border-color: rgba(0, 243, 255, 0.7) !important;
    box-shadow:
        0 0 0 1px rgba(0, 243, 255, 0.15),
        0 0 50px rgba(0, 243, 255, 0.2) inset,
        0 12px 80px rgba(0, 0, 0, 0.85) !important;
    animation: panelOpen 0.18s cubic-bezier(0.2, 0, 0.2, 1) forwards;
}

/* Collapse animation */
.vp-panel.collapsing {
    animation: panelClose 0.13s cubic-bezier(0.4, 0, 1, 1) forwards !important;
}

@keyframes panelOpen {
    from { transform: scale(0.93); opacity: 0.5; }
    to   { transform: scale(1);    opacity: 1; }
}

@keyframes panelClose {
    from { transform: scale(1);    opacity: 1; }
    to   { transform: scale(0.95); opacity: 0; }
}

/* Dim backdrop */
.vp-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    z-index: 45;
    pointer-events: none !important;
    transition: background 0.18s ease;
}
.vp-backdrop.active {
    background: rgba(0, 0, 0, 0.7);
    pointer-events: none !important;
}

/* Expand button — always visible in header, pointer-events: auto */
.vp-expand-btn {
    pointer-events: auto;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    color: rgba(0, 243, 255, 0.6);
    background: rgba(3, 7, 17, 0.75);
    border: 1px solid rgba(0, 243, 255, 0.25);
    padding: 2px 8px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
    white-space: nowrap;
}
.vp-expand-btn:hover {
    color: var(--cyan);
    border-color: rgba(0, 243, 255, 0.6);
    background: rgba(0, 243, 255, 0.08);
}
.vp-panel.maximized .vp-expand-btn { display: none; }

/* Collapse chip — shown only when maximized */
.vp-close-chip {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 25;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    color: rgba(0, 243, 255, 0.75);
    background: rgba(3, 7, 17, 0.9);
    border: 1px solid rgba(0, 243, 255, 0.4);
    padding: 3px 10px;
    cursor: pointer;
    display: none;
    transition: color 0.15s, border-color 0.15s;
}
.vp-close-chip:hover { color: var(--cyan); border-color: var(--cyan); }
.vp-panel.maximized .vp-close-chip { display: block; }

/* ESC label when expanded */
.vp-panel.maximized::after {
    content: 'press ESC or [CLOSE] to collapse • Orbit / Pan with mouse';
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 9px;
    color: rgba(0, 243, 255, 0.3);
    letter-spacing: 0.1em;
    pointer-events: none;
    z-index: 14;
}

/* ── Maximize Nav Bar (HUD Switcher) ──── */
.max-bar {
    position: fixed;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 70;
    background: rgba(3, 7, 18, 0.92);
    border: 1px solid rgba(0, 243, 255, 0.45);
    border-radius: 3px;
    padding: 5px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.25), 0 8px 24px rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.max-bar.hidden {
    display: none !important;
}

.max-bar__label {
    font-family: var(--font-hud);
    font-size: 11px;
    color: var(--cyan);
    letter-spacing: 0.12em;
    font-weight: 700;
    text-shadow: 0 0 8px rgba(0, 243, 255, 0.4);
}

.max-bar__switches {
    display: flex;
    gap: 5px;
}

.max-bar__btn {
    padding: 3px 9px;
    font-family: var(--font-mono);
    font-size: 9px;
    background: rgba(5, 12, 24, 0.85);
    border: 1px solid rgba(0, 243, 255, 0.3);
    color: rgba(0, 243, 255, 0.7);
    cursor: pointer;
    letter-spacing: 0.05em;
    border-radius: 2px;
    transition: all 0.15s ease;
}

.max-bar__btn:hover {
    border-color: var(--cyan);
    color: #fff;
    background: rgba(0, 243, 255, 0.12);
}

.max-bar__btn.active {
    background: rgba(0, 243, 255, 0.22);
    border-color: var(--cyan);
    color: #ffffff;
    font-weight: bold;
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.4), inset 0 0 4px rgba(0, 243, 255, 0.2);
}

.max-bar__close {
    padding: 3px 9px;
    font-family: var(--font-mono);
    font-size: 9px;
    background: rgba(50, 10, 15, 0.8);
    border: 1px solid rgba(239, 68, 68, 0.6);
    color: rgba(254, 202, 202, 0.9);
    cursor: pointer;
    letter-spacing: 0.05em;
    font-weight: bold;
    border-radius: 2px;
    transition: all 0.15s ease;
}

.max-bar__close:hover {
    background: rgba(90, 15, 20, 0.95);
    border-color: var(--red);
    color: #fff;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}

/* ── Custom Scrollbars ────────────────────────────── */
::-webkit-scrollbar          { width: 4px; }
::-webkit-scrollbar-track    { background: #020610; }
::-webkit-scrollbar-thumb    { background: #004466; border-radius: 2px; }