/* ═══════════════════════════════════════════════════════════════
   CRT TERMINAL EFFECTS

   Phosphor green CRT monitor simulation with scanlines,
   screen curvature, flicker, and glow effects.
   Used by: VAULTOPS (terminal.html), SECOPS (surveillance.html)
   ═══════════════════════════════════════════════════════════════ */

/* ── CRT Screen Container ── */
.crt-screen {
    background: var(--bg-terminal);
    color: var(--vt-green);
    font-family: var(--font-terminal);
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    padding: var(--space-xl);
}

/* ── Scanline Overlay ── */
.crt-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15) 0px,
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 3px
    );
    pointer-events: none;
    z-index: 10;
}

/* ── Screen Edge Vignette (CRT curvature) ── */
.crt-screen::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(
        ellipse at center,
        transparent 55%,
        rgba(0, 0, 0, 0.5) 100%
    );
    pointer-events: none;
    z-index: 11;
}

/* ── CRT Monitor Frame (outer bezel) ── */
.crt-monitor {
    background: linear-gradient(145deg, #3a3a2e 0%, #2a2a1e 50%, #1a1a0e 100%);
    border: 3px solid #555540;
    border-radius: 16px;
    padding: 20px;
    box-shadow:
        inset 0 0 30px rgba(0, 0, 0, 0.5),
        0 4px 20px rgba(0, 0, 0, 0.8),
        0 0 60px rgba(0, 238, 0, 0.05);
    position: relative;
}

/* Monitor power LED */
.crt-monitor::after {
    content: '';
    position: absolute;
    bottom: 10px;
    right: 24px;
    width: 6px;
    height: 6px;
    background: var(--vt-green);
    border-radius: 50%;
    box-shadow: var(--glow-green);
    animation: ledBlink 3s infinite;
}

/* ── Screen Flicker Animation ── */
@keyframes flicker {
    0%, 100% { opacity: 1; }
    92%      { opacity: 1; }
    93%      { opacity: 0.85; }
    94%      { opacity: 1; }
    96%      { opacity: 0.92; }
    97%      { opacity: 1; }
}

.crt-flicker {
    animation: flicker 5s infinite;
}

/* ── Power LED Blink ── */
@keyframes ledBlink {
    0%, 90%, 100% { opacity: 1; }
    95%           { opacity: 0.6; }
}

/* ── Terminal Content Styling ── */
.crt-screen .terminal-header {
    color: var(--vt-green);
    font-size: 1.1rem;
    text-align: center;
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-green);
    text-shadow: var(--glow-green);
    letter-spacing: 2px;
}

.crt-screen .terminal-line {
    line-height: 1.8;
    font-size: 0.9rem;
}

.crt-screen .terminal-line.dim {
    color: var(--vt-green-dim);
}

/* ── Cursor Blink ── */
@keyframes cursorBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.cursor-blink::after {
    content: '█';
    animation: cursorBlink 1s infinite;
    color: var(--vt-green);
}

/* ── Text Typing Animation ── */
@keyframes typeIn {
    from { width: 0; }
    to   { width: 100%; }
}

.type-animation {
    overflow: hidden;
    white-space: nowrap;
    animation: typeIn 1s steps(30) forwards;
}

/* ── Amber CRT Variant (for warnings/alerts) ── */
.crt-screen--amber {
    color: var(--vt-amber);
}

.crt-screen--amber .terminal-header {
    color: var(--vt-amber);
    text-shadow: var(--glow-amber);
    border-bottom-color: var(--border-amber);
}

.crt-screen--amber a {
    color: var(--vt-yellow);
}

.crt-screen--amber a:hover {
    text-shadow: var(--glow-amber);
}

/* ── Multi-Monitor Grid (for surveillance page) ── */
.monitor-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.monitor-grid .crt-monitor {
    padding: 12px;
}

.monitor-grid .crt-screen {
    padding: var(--space-md);
    font-size: 0.8rem;
    min-height: 200px;
}

@media (max-width: 768px) {
    .monitor-grid {
        grid-template-columns: 1fr;
    }
}

/* ── Screen Power-On Animation ── */
@keyframes powerOn {
    0% {
        transform: scaleY(0.01) scaleX(0.5);
        filter: brightness(30);
    }
    20% {
        transform: scaleY(0.01) scaleX(1);
        filter: brightness(10);
    }
    40% {
        transform: scaleY(1) scaleX(1);
        filter: brightness(2);
    }
    100% {
        transform: scaleY(1) scaleX(1);
        filter: brightness(1);
    }
}

.crt-power-on {
    animation: powerOn 0.8s cubic-bezier(0.2, 0.8, 0.4, 1) forwards;
}

/* ── Phosphor Glow Effect (ambient screen glow) ── */
.crt-glow {
    box-shadow:
        inset 0 0 60px rgba(0, 238, 0, 0.03),
        0 0 40px rgba(0, 238, 0, 0.06);
}

/* ── RobCo Terminal Header Bar ── */
.robco-header {
    background: linear-gradient(180deg, #002200 0%, #001800 100%);
    border: 1px solid #003300;
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-terminal);
    font-size: 0.8rem;
    color: var(--vt-green-dim);
}

.robco-header .title {
    color: var(--vt-green);
    text-shadow: var(--glow-green);
    letter-spacing: 1px;
}