:root {
    --bg-color: #000000;
    --card-bg: rgba(0, 10, 15, 0.85);
    --primary-color: #00e5ff; /* Cyan / Neon Blue from watch firmware */
    --primary-glow: rgba(0, 229, 255, 0.5);
    --primary-dark: #005f6b;
    --text-color: #ffffff;
    --text-muted: #00a0b2;
    --border-color: rgba(0, 229, 255, 0.35);
    --border-glow: rgba(0, 229, 255, 0.15);
    --error-color: #ff3b30;
    --error-glow: rgba(255, 59, 48, 0.5);
}

/* Background Grid Setup */
body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    background-image: 
        linear-gradient(rgba(0, 95, 107, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 95, 107, 0.08) 1px, transparent 1px);
    background-size: 25px 25px;
    color: var(--text-color);
    font-family: 'Rajdhani', sans-serif;
    font-weight: 500;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

/* CRT Scanlines and vertical scrolling bar */
.scanline {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        rgba(18, 16, 16, 0) 50%,
        rgba(0, 0, 0, 0.22) 50%
    );
    background-size: 100% 4px;
    z-index: 100;
    pointer-events: none;
}

.scanbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(0, 229, 255, 0.18);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
    z-index: 101;
    pointer-events: none;
    animation: scan 5s linear infinite;
}

@keyframes scan {
    0% { top: -10px; }
    100% { top: 100%; }
}

.glow-bg {
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    pointer-events: none;
}

/* HUD elements around the screen corners */
.hud-item {
    position: fixed;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
    color: rgba(0, 229, 255, 0.45);
    letter-spacing: 2px;
    pointer-events: none;
    z-index: 5;
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.25);
    animation: hud-glow 4s ease-in-out infinite alternate;
}

@keyframes hud-glow {
    0% { opacity: 0.45; }
    100% { opacity: 0.85; }
}

.hud-top-left { top: 20px; left: 20px; }
.hud-top-right { top: 20px; right: 20px; }
.hud-bottom-left { bottom: 20px; left: 20px; }
.hud-bottom-right { bottom: 20px; right: 20px; }

/* Fullscreen Intrusion Boot Overlay */
.intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000000;
    background-image: 
        linear-gradient(rgba(0, 95, 107, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 95, 107, 0.06) 1px, transparent 1px);
    background-size: 25px 25px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.8s cubic-bezier(0.19, 1, 0.22, 1), transform 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.intro-overlay.fade-out {
    opacity: 0;
    transform: scale(1.05);
    pointer-events: none;
}

.intro-panel {
    background: rgba(0, 10, 15, 0.95);
    border: 1px solid var(--border-color);
    padding: 40px;
    width: 90%;
    max-width: 460px;
    text-align: center;
    position: relative;
    box-shadow: 0 0 35px rgba(0, 229, 255, 0.2);
}

.intro-panel::before, .intro-panel::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border: 2px solid var(--primary-color);
    pointer-events: none;
}
.intro-panel::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.intro-panel::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.intro-title {
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.55rem;
    color: var(--primary-color);
    margin-top: 0;
    letter-spacing: 2px;
    text-shadow: 0 0 10px var(--primary-glow);
    animation: text-flicker 3s infinite;
}

@keyframes text-flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.9; }
    52% { opacity: 0.6; }
    54% { opacity: 0.95; }
}

.intro-hint {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 25px;
    letter-spacing: 1px;
}

.intro-console {
    background: rgba(0, 0, 0, 0.9);
    border: 1px solid rgba(0, 229, 255, 0.25);
    padding: 20px;
    height: 160px;
    text-align: left;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.88rem;
    color: var(--primary-color);
    overflow-y: auto;
    line-height: 1.6;
    letter-spacing: 0.5px;
}

.intro-line {
    margin-bottom: 6px;
}

.intro-btn {
    margin-top: 10px;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 12px 30px;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 0 10px var(--border-glow);
}

.intro-btn:hover {
    background: var(--primary-color);
    color: #000000;
    box-shadow: 0 0 18px var(--primary-glow);
}

/* App Main Container */
.container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 580px;
    padding: 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.logo {
    font-family: 'Share Tech Mono', monospace;
    font-weight: 700;
    font-size: 1.6rem;
    letter-spacing: 2px;
    color: var(--primary-color);
    text-shadow: 0 0 12px var(--primary-glow);
}

.badge {
    font-family: 'Share Tech Mono', monospace;
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 3px 10px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    box-shadow: 0 0 6px var(--border-glow);
}

/* Cyber Installer Card */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 30px 40px;
    box-shadow: 
        0 0 30px rgba(0, 229, 255, 0.15), 
        inset 0 0 15px rgba(0, 229, 255, 0.05);
    text-align: center;
    position: relative;
}

.card::before, .card::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    border: 2px solid var(--primary-color);
    pointer-events: none;
}
.card::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.card::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.ascii-logo {
    font-family: 'Share Tech Mono', monospace;
    color: var(--primary-dark);
    font-size: 0.82rem;
    line-height: 1.25;
    margin: 10px 0 20px 0;
    text-align: center;
    white-space: pre;
    display: inline-block;
    filter: drop-shadow(0 0 4px rgba(0, 95, 107, 0.3));
    animation: text-flicker 5s infinite;
}

h1 {
    font-size: 2.1rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-top: 0;
    margin-bottom: 6px;
    color: var(--text-color);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
}

.subtitle {
    color: var(--text-muted);
    margin-bottom: 25px;
    font-size: 1.05rem;
    letter-spacing: 1px;
    line-height: 1.4;
}

/* Status Banner */
.status-banner {
    display: inline-flex;
    align-items: center;
    background: rgba(0, 229, 255, 0.05);
    border: 1px solid rgba(0, 229, 255, 0.15);
    padding: 6px 14px;
    margin-bottom: 25px;
    border-radius: 0;
}

.status-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    margin-right: 10px;
    box-shadow: 0 0 8px var(--primary-glow);
}

.status-indicator.warning {
    background-color: #ffb300;
    box-shadow: 0 0 8px rgba(255, 179, 0, 0.6);
}

.status-indicator.error {
    background-color: var(--error-color);
    box-shadow: 0 0 8px var(--error-glow);
}

.status-indicator.flashing {
    animation: status-blink 0.5s infinite alternate;
}

@keyframes status-blink {
    0% { opacity: 0.2; }
    100% { opacity: 1; }
}

.status-text {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-color);
    letter-spacing: 1px;
}

/* Info Box */
.info-box {
    background: rgba(0, 15, 20, 0.85);
    border: 1px solid rgba(0, 229, 255, 0.25);
    padding: 18px;
    text-align: left;
    margin-bottom: 25px;
    border-left: 4px solid var(--primary-color);
}

.info-box h3 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1rem;
    letter-spacing: 1.5px;
    color: var(--primary-color);
    text-shadow: 0 0 8px var(--primary-glow);
}

.info-box ul {
    margin: 0;
    padding-left: 18px;
    color: #e0f7fa;
    font-size: 0.92rem;
    line-height: 1.6;
}

.info-box li::marker {
    color: var(--primary-color);
}

/* Connect & Flash Button wrapper */
.button-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 25px;
}

.btn-primary {
    background: var(--bg-color);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 14px 40px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 0 10px var(--border-glow);
}

.btn-primary:hover {
    background: var(--primary-color);
    color: #000000;
    box-shadow: 0 0 20px var(--primary-glow);
    transform: scale(1.02);
}

.btn-primary:active {
    transform: scale(1.0);
}

.unsupported-msg {
    color: var(--error-color);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.95rem;
    letter-spacing: 1px;
    text-shadow: 0 0 8px var(--error-glow);
}

/* Console Log Box */
.console-box {
    margin-top: 25px;
    border: 1px solid rgba(0, 229, 255, 0.25);
    background: rgba(0, 5, 10, 0.95);
    text-align: left;
}

.console-header {
    background: rgba(0, 95, 107, 0.15);
    padding: 6px 12px;
    border-bottom: 1px solid rgba(0, 229, 255, 0.2);
    display: flex;
    align-items: center;
}

.console-dot {
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    display: inline-block;
    margin-right: 10px;
    border-radius: 50%;
    box-shadow: 0 0 6px var(--primary-glow);
    animation: blink 1.2s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
}

.console-title {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.console-log {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    color: var(--primary-color);
    padding: 15px;
    max-height: 110px;
    overflow-y: auto;
    line-height: 1.5;
    letter-spacing: 0.5px;
}

.console-line {
    margin-bottom: 6px;
    opacity: 0.9;
}

.console-line.error {
    color: var(--error-color);
    text-shadow: 0 0 6px var(--error-glow);
}

/* Custom scrollbars */
.console-log::-webkit-scrollbar, .intro-console::-webkit-scrollbar {
    width: 5px;
}
.console-log::-webkit-scrollbar-track, .intro-console::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.5);
}
.console-log::-webkit-scrollbar-thumb, .intro-console::-webkit-scrollbar-thumb {
    background: var(--primary-dark);
}

footer {
    text-align: center;
    margin-top: 25px;
    color: var(--text-muted);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.78rem;
    letter-spacing: 1px;
}

/* Hide HUD elements on mobile screens for better responsiveness */
@media (max-width: 768px) {
    .hud-item {
        display: none;
    }
    .card {
        padding: 20px;
    }
}