/* ==========================================================================
   SABBY SIGNAL CYBER CORE // DESIGN TOKENS & RETRO TERMINAL CRT ENGINE
   Matches status.sablinova.com & sablinova.com/terminal
   ========================================================================== */

:root {
    --bg-void: #050608;
    --bg-panel: #090c13;
    --bg-card: #0d111a;
    --bg-card-hover: #121824;
    --bg-input: #07090f;
    
    --cyan: #00f3ff;
    --cyan-glow: rgba(0, 243, 255, 0.45);
    --cyan-dim: rgba(0, 243, 255, 0.15);
    --cyan-subtle: rgba(0, 243, 255, 0.05);

    --pink: #ff00ff;
    --pink-glow: rgba(255, 0, 255, 0.45);
    --pink-dim: rgba(255, 0, 255, 0.15);

    --green: #00ff41;
    --green-glow: rgba(0, 255, 65, 0.4);
    --green-dim: rgba(0, 255, 65, 0.15);

    --amber: #ffb000;
    --amber-glow: rgba(255, 176, 0, 0.4);
    --amber-dim: rgba(255, 176, 0, 0.15);

    --red: #ff3355;
    --red-glow: rgba(255, 51, 85, 0.45);
    --red-dim: rgba(255, 51, 85, 0.15);

    --border-dim: rgba(255, 255, 255, 0.08);
    --border-hud: rgba(0, 243, 255, 0.22);
    --border-hud-bright: rgba(0, 243, 255, 0.65);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-cyan: #00f3ff;
    --text-green: #00ff41;

    --font-heading: 'Orbitron', 'Rajdhani', sans-serif;
    --font-ui: 'Rajdhani', system-ui, sans-serif;
    --font-mono: 'Share Tech Mono', 'JetBrains Mono', monospace;
}

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

html, body {
    width: 100%;
    height: 100%;
    background-color: var(--bg-void);
    color: var(--text-primary);
    font-family: var(--font-ui);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   CRT & RETRO DISPLAY OVERLAYS (EXACT STATUS & SABLINOVA TERMINAL PARITY)
   ========================================================================== */

.crt-overlay, .crt-screen-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 99998;
    overflow: hidden;
    transition: opacity 0.3s ease;
}

.crt-scanlines {
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.45) 50%),
                linear-gradient(90deg, rgba(0, 240, 255, 0.03), rgba(0, 255, 136, 0.015), rgba(0, 240, 255, 0.03));
    background-size: 100% 3px, 6px 100%;
    pointer-events: none;
    z-index: 2;
}

.crt-vignette {
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 130px rgba(0, 0, 0, 0.95), inset 0 0 50px rgba(0, 240, 255, 0.22);
    pointer-events: none;
    z-index: 3;
}

.crt-flicker {
    position: absolute;
    inset: 0;
    background: rgba(0, 240, 255, 0.012);
    opacity: 0.1;
    animation: crtFlickerAnim 0.15s infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes crtFlickerAnim {
    0% { opacity: 0.08; }
    50% { opacity: 0.13; }
    100% { opacity: 0.08; }
}

.crt-sweep-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 14px;
    background: linear-gradient(to bottom, transparent, rgba(0, 240, 255, 0.14), transparent);
    animation: crtSweepAnim 6.5s linear infinite;
    pointer-events: none;
    z-index: 4;
}

@keyframes crtSweepAnim {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(105vh); }
}

.crt-noise {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.04;
    z-index: 1;
    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='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    animation: staticNoise 0.1s steps(6) infinite;
}

@keyframes staticNoise {
    0% { transform: translate(0, 0); }
    25% { transform: translate(-2px, 1px); }
    50% { transform: translate(1px, -1px); }
    75% { transform: translate(-1px, 2px); }
    100% { transform: translate(2px, -1px); }
}

/* Background Cyber Grid */
.bg-grid {
    position: fixed;
    inset: 0;
    background: 
        linear-gradient(rgba(0, 243, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 243, 255, 0.02) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
    animation: gridPulse 9s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

/* ==========================================================================
   CRT VIBE TOGGLE & DISPLAY MODES (MATCHING STATUS.SABLINOVA.COM)
   ========================================================================== */

/* CRT Enabled Glow */
body.crt-mode {
    text-shadow: 0 0 3px rgba(0, 243, 255, 0.35);
}

body.crt-mode .brand-title,
body.crt-mode .deck-title {
    text-shadow: 0 0 8px var(--cyan), 0 0 20px rgba(0, 243, 255, 0.5);
}

/* CRT Disabled Mode */
html.crt-off .crt-screen-overlay,
html.crt-off .tv-scanlines,
html.crt-off .tv-vignette,
body.crt-off .crt-screen-overlay,
body.crt-off .tv-scanlines,
body.crt-off .tv-vignette {
    display: none !important;
}

html.crt-off body,
body.crt-off,
body.crt-off * {
    text-shadow: none !important;
}

/* CRT Mode Toggle Button (Exact match with status.sablinova.com & suno-downloader) */
.crt-toggle-btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 7px 14px;
    border-radius: 4px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--border-hud-bright);
    color: var(--cyan);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.22);
    user-select: none;
    text-transform: uppercase;
    text-decoration: none;
}

.crt-toggle-btn:hover {
    background: rgba(0, 240, 255, 0.22);
    box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
    color: #fff;
    transform: translateY(-1px);
}

.crt-toggle-btn:active {
    transform: translateY(1px);
}

.crt-toggle-btn .crt-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
    display: inline-block;
    transition: all 0.2s ease;
}

.crt-toggle-btn.is-off {
    background: var(--bg-input);
    border-color: var(--border-dim);
    color: var(--text-muted);
    box-shadow: none;
}

.crt-toggle-btn.is-off:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
}

.crt-toggle-btn.is-off .crt-dot {
    background: var(--text-muted);
    box-shadow: none;
}

.crt-modal-toggle {
    padding: 4px 10px;
    font-size: 10px;
    letter-spacing: 1px;
}

.tv-crt-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 99999;
    padding: 5px 12px;
    font-size: 10px;
}

/* ==========================================================================
   HUD UTILITIES & BUTTONS
   ========================================================================== */

.hud-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 243, 255, 0.06);
    border: 1px solid var(--border-hud);
    color: var(--cyan);
    font-family: var(--font-heading);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    user-select: none;
}

.hud-btn:hover {
    background: rgba(0, 243, 255, 0.16);
    border-color: var(--cyan);
    box-shadow: 0 0 16px var(--cyan-glow);
    color: #fff;
    transform: translateY(-1px);
}

.hud-btn:active {
    transform: translateY(1px);
}

.hud-btn-primary {
    background: rgba(0, 243, 255, 0.18);
    border-color: var(--cyan);
    box-shadow: 0 0 12px var(--cyan-glow);
}

.hud-btn-primary:hover {
    background: var(--cyan);
    color: #000;
    box-shadow: 0 0 24px var(--cyan);
}

.hud-btn-magenta {
    background: rgba(255, 0, 255, 0.08);
    border-color: rgba(255, 0, 255, 0.3);
    color: var(--pink);
}

.hud-btn-magenta:hover {
    background: rgba(255, 0, 255, 0.2);
    border-color: var(--pink);
    box-shadow: 0 0 16px var(--pink-glow);
    color: #fff;
}

.hud-btn-green {
    background: rgba(0, 255, 65, 0.08);
    border-color: rgba(0, 255, 65, 0.3);
    color: var(--green);
}

.hud-btn-green:hover {
    background: rgba(0, 255, 65, 0.2);
    border-color: var(--green);
    box-shadow: 0 0 16px var(--green-glow);
    color: #fff;
}

.hud-btn-danger {
    background: rgba(255, 51, 85, 0.08);
    border-color: rgba(255, 51, 85, 0.3);
    color: var(--red);
}

.hud-btn-danger:hover {
    background: rgba(255, 51, 85, 0.2);
    border-color: var(--red);
    box-shadow: 0 0 16px var(--red-glow);
    color: #fff;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

::-webkit-scrollbar-track {
    background: var(--bg-void);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 243, 255, 0.25);
    border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--cyan);
    box-shadow: 0 0 8px var(--cyan);
}

/* HUD Badge */
.hud-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 8px;
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
    background: rgba(0, 243, 255, 0.08);
    border: 1px solid var(--border-hud);
    color: var(--cyan);
}

.hud-badge-online {
    background: rgba(0, 255, 65, 0.08);
    border-color: rgba(0, 255, 65, 0.3);
    color: var(--green);
}

.hud-badge-online::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 6px var(--green);
    animation: blink 2s infinite ease-in-out;
}

@keyframes blink {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(0.8); }
}

/* Modal Overlay */
.hud-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(3, 4, 7, 0.85);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.hud-modal-overlay.active {
    display: flex;
    animation: modalFadeIn 0.25s ease-out;
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

.hud-modal {
    background: var(--bg-panel);
    border: 1px solid var(--border-hud);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.9), 0 0 25px var(--cyan-subtle);
    border-radius: 4px;
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.hud-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: rgba(0, 243, 255, 0.04);
    border-bottom: 1px solid var(--border-hud);
    gap: 12px;
}

.hud-modal-title {
    font-family: var(--font-heading);
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--cyan);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
}

.hud-modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.hud-modal-close:hover {
    color: var(--red);
    text-shadow: 0 0 8px var(--red);
}

.hud-modal-body {
    padding: 24px 28px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}