/* DJI Drone Management — Design Tokens & Base Styles (Modernized) */

/* DJI tokens are thin aliases over oracle.css shared tokens so theme
   toggles (dark/light) propagate. Keep DJI's cyan brand accent local. */
:root {
    --dji-bg-deep:      var(--bg-deep);
    --dji-bg-base:      var(--bg-base);
    --dji-bg-surface:   var(--bg-surface);
    --dji-bg-elevated:  var(--bg-elevated);
    --dji-bg-hover:     var(--bg-hover);
    --dji-bg-active:    var(--bg-active);

    --dji-text:         var(--text-primary);
    --dji-text-dim:     var(--text-secondary);
    --dji-text-muted:   var(--text-muted);

    /* DJI brand accent (cyan) — intentionally distinct from portal copper */
    --dji-accent:       #00b4d8;
    --dji-accent-dim:   rgba(0,180,216,0.15);
    --dji-accent-glow:  rgba(0,180,216,0.08);

    --dji-green:        var(--green);
    --dji-red:          var(--red);
    --dji-amber:        var(--amber);
    --dji-cyan:         var(--cyan);
    --dji-purple:       var(--purple);

    --dji-border:       var(--border-default);
    --dji-border-accent: rgba(0,180,216,0.2);

    /* Severity tinting */
    --dji-sev-critical-bg:  var(--red-dim);
    --dji-sev-warning-bg:   var(--amber-dim);
    --dji-sev-info-bg:      var(--cyan-dim);
    --dji-sev-nominal-bg:   rgba(0,180,216,0.04);

    --dji-radius:       var(--radius-md);
    --dji-radius-sm:    var(--radius-sm);
    --dji-radius-lg:    var(--radius-lg);

    --dji-font:         var(--font-body);
    --dji-font-display: var(--font-display);
    --dji-font-mono:    var(--font-mono);

    --dji-ease:         cubic-bezier(0.4, 0, 0.2, 1);
    --dji-ease-out:     cubic-bezier(0, 0, 0.2, 1);
}

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

html, body {
    height: 100%;
    font-family: var(--dji-font);
    background: var(--dji-bg-deep);
    color: var(--dji-text);
    overflow: hidden;
    font-variant-numeric: tabular-nums;
}

/* ============================================================================
   Atmospheric Depth — noise, glow, grid, scanline
   ============================================================================ */

.dji-noise-overlay {
    position: fixed; inset: 0; pointer-events: none; z-index: 9999; opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat; background-size: 256px 256px; mix-blend-mode: overlay;
}

.dji-ambient-glow {
    position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background:
        radial-gradient(ellipse 80% 60% at 55% 45%, rgba(0,180,216,0.025) 0%, transparent 70%),
        radial-gradient(ellipse 50% 40% at 80% 20%, rgba(167,139,250,0.015) 0%, transparent 60%);
    transition: background 1.5s ease;
}
.dji-ambient-glow.dji-ambient-alert {
    background:
        radial-gradient(ellipse 80% 60% at 55% 45%, rgba(239,68,68,0.03) 0%, transparent 70%),
        radial-gradient(ellipse 50% 40% at 80% 20%, rgba(245,158,11,0.02) 0%, transparent 60%);
}

.dji-grid-overlay {
    position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: 0.025;
    background-image:
        linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 80%);
}

.dji-scanline-overlay {
    position: fixed; inset: 0; pointer-events: none; z-index: 9998; opacity: 0.015;
    background: repeating-linear-gradient(0deg, transparent, transparent 1px, rgba(255,255,255,0.08) 1px, rgba(255,255,255,0.08) 2px);
}

/* ============================================================================
   Page Load Staging
   ============================================================================ */
@media (prefers-reduced-motion: no-preference) {
    @keyframes dji-stage-down { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: translateY(0); } }
    @keyframes dji-stage-left { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
    @keyframes dji-stage-fade { from { opacity: 0; } to { opacity: 1; } }
    @keyframes dji-stage-right { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

    .dji-app-shell .dji-topbar { animation: dji-stage-down 0.4s var(--dji-ease-out) both; animation-delay: 0.05s; }
    .dji-app-shell .dji-sidebar { animation: dji-stage-left 0.45s var(--dji-ease-out) both; animation-delay: 0.12s; }
    .dji-app-shell .dji-map { animation: dji-stage-fade 0.5s var(--dji-ease-out) both; animation-delay: 0.22s; }
    .dji-app-shell .dji-detail-panel { animation: dji-stage-right 0.4s var(--dji-ease-out) both; animation-delay: 0.3s; }
}

/* ============================================================================
   Threat Level Strip
   ============================================================================ */
.dji-threat-strip {
    position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 10000;
    background: var(--dji-accent); transition: background 0.8s ease, box-shadow 0.8s ease;
    box-shadow: 0 0 8px rgba(0,180,216,0.3);
}
.dji-threat-strip.dji-threat-warning {
    background: var(--dji-amber); box-shadow: 0 0 12px rgba(245,158,11,0.4);
    animation: dji-threat-pulse-amber 2s ease-in-out infinite;
}
.dji-threat-strip.dji-threat-critical {
    background: var(--dji-red); box-shadow: 0 0 16px rgba(239,68,68,0.5);
    animation: dji-threat-pulse-red 1.2s ease-in-out infinite;
}
@keyframes dji-threat-pulse-amber { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }
@keyframes dji-threat-pulse-red { 0%, 100% { opacity: 1; } 50% { opacity: 0.8; } }

/* ============================================================================
   Severity Tinting
   ============================================================================ */
.dji-sev-critical { background: var(--dji-sev-critical-bg); border-left: 3px solid var(--dji-red); color: var(--dji-red); }
.dji-sev-warning { background: var(--dji-sev-warning-bg); border-left: 3px solid var(--dji-amber); color: var(--dji-amber); }
.dji-sev-info { background: var(--dji-sev-info-bg); border-left: 3px solid var(--dji-cyan); color: var(--dji-cyan); }
.dji-sev-nominal { background: var(--dji-sev-nominal-bg); border-left: 3px solid var(--dji-green); color: var(--dji-green); }

.dji-sev-pill { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 10px; font-size: 10px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; }
.dji-sev-pill-critical { background: rgba(239,68,68,0.15); color: var(--dji-red); }
.dji-sev-pill-warning { background: rgba(245,158,11,0.12); color: var(--dji-amber); }
.dji-sev-pill-info { background: rgba(34,211,238,0.1); color: var(--dji-cyan); }
.dji-sev-pill-nominal { background: rgba(0,180,216,0.1); color: var(--dji-accent); }

/* ============================================================================
   Command Palette
   ============================================================================ */
.dji-cmd-overlay {
    position: fixed; inset: 0; background: rgba(6,7,16,0.75);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    z-index: 20000; display: flex; justify-content: center; padding-top: 18vh;
    animation: dji-stage-fade 0.15s ease;
}
.dji-cmd-palette {
    width: 520px; max-width: 92vw; max-height: 420px;
    background: var(--dji-bg-elevated); border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--dji-radius-lg);
    box-shadow: 0 24px 80px rgba(0,0,0,0.5), 0 0 1px rgba(255,255,255,0.1);
    display: flex; flex-direction: column; overflow: hidden;
}
.dji-cmd-input-wrap { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--dji-border); }
.dji-cmd-input-wrap svg { color: var(--dji-accent); flex-shrink: 0; }
.dji-cmd-input { flex: 1; background: none; border: none; color: var(--dji-text); font-size: 15px; font-family: var(--dji-font); outline: none; }
.dji-cmd-input::placeholder { color: var(--dji-text-muted); }
.dji-cmd-list { flex: 1; overflow-y: auto; padding: 6px; }
.dji-cmd-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--dji-radius-sm); cursor: pointer; transition: background 0.1s; font-size: 13px; color: var(--dji-text); }
.dji-cmd-item:hover, .dji-cmd-item.dji-cmd-active { background: var(--dji-accent-dim); }
.dji-cmd-item-icon { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; background: var(--dji-bg-surface); border-radius: var(--dji-radius-sm); color: var(--dji-accent); flex-shrink: 0; }
.dji-cmd-item-label { flex: 1; }
.dji-cmd-item-hint { font-size: 11px; color: var(--dji-text-muted); font-family: var(--dji-font-mono); }
.dji-cmd-footer { padding: 8px 16px; border-top: 1px solid var(--dji-border); font-size: 11px; color: var(--dji-text-muted); display: flex; gap: 16px; }
.dji-cmd-footer kbd { background: var(--dji-bg-surface); padding: 1px 5px; border-radius: 3px; font-family: var(--dji-font-mono); font-size: 10px; }

/* ============================================================================
   Branded Empty States
   ============================================================================ */
.dji-empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 48px 24px; text-align: center; gap: 16px; }
.dji-empty-state-icon { width: 80px; height: 80px; color: var(--dji-accent); opacity: 0.3; }
.dji-empty-state-title { font-family: var(--dji-font-display); font-size: 18px; font-weight: 600; color: var(--dji-text); letter-spacing: 0.5px; }
.dji-empty-state-subtitle { font-size: 13px; color: var(--dji-text-dim); max-width: 320px; line-height: 1.5; }
.dji-empty-state-action { margin-top: 8px; padding: 8px 20px; background: var(--dji-accent-dim); color: var(--dji-accent); border: 1px solid var(--dji-border-accent); border-radius: var(--dji-radius-sm); font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.15s; text-decoration: none; }
.dji-empty-state-action:hover { background: rgba(0,180,216,0.2); border-color: var(--dji-accent); }