/* ====== Root Variables ====== */
:root {
    --bg-dark: #0f111a;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.1);
    --text-main: #e2e8f0;
    --accent-1: #00f2fe;
    --accent-2: #4facfe;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

body.dark-theme {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(79, 172, 254, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(30, 64, 175, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
}

/* Glassmorphism Classes */
.glass-card, .glass-header {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-2px);
    border: 1px solid rgba(255,255,255,0.15);
}

.glass-header {
    border-radius: 12px;
}

/* Typography Gradients */
.txt-gradient {
    background: linear-gradient(to right, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.txt-warning-gradient {
    background: linear-gradient(to right, #f59e0b, #ef4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn-gradient {
    background: linear-gradient(45deg, var(--accent-2), var(--accent-1));
    color: white;
    border: none;
    transition: opacity 0.3s, transform 0.2s;
}
.btn-gradient:hover {
    opacity: 0.9;
    transform: scale(1.02);
    color: white;
}

/* Motor Status Indicator */
.motor-status-icon {
    font-size: 5rem;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.motor-on {
    color: var(--success);
    text-shadow: 0 0 20px rgba(16, 185, 129, 0.6);
    animation: pulse 2s infinite;
}

.motor-off {
    color: var(--danger);
    text-shadow: 0 0 20px rgba(239, 68, 68, 0.6);
}

@keyframes pulse {
    0% {
        transform: scale(1);
        text-shadow: 0 0 20px rgba(16, 185, 129, 0.6);
    }
    50% {
        transform: scale(1.05);
        text-shadow: 0 0 40px rgba(16, 185, 129, 0.9);
    }
    100% {
        transform: scale(1);
        text-shadow: 0 0 20px rgba(16, 185, 129, 0.6);
    }
}

/* Big Control Buttons */
.btn-giant {
    padding: 1.5rem;
    font-size: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    transition: all 0.2s ease;
}

.btn-giant:active {
    transform: translateY(4px);
    box-shadow: 0 5px 10px rgba(0,0,0,0.3);
}

/* Gauge Cards */
.gauge-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem 1rem;
    text-align: center;
}

.gauge-value {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin: 1rem 0 0.5rem 0;
}

.gauge-label {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.6);
}

/* ====== Alert Panel ====== */
#alert-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.alert-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.2rem;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    border-left: 4px solid transparent;
    transition: all 0.3s ease;
}

.alert-ok {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: var(--success);
    color: #6ee7b7;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.12);
    border-left-color: var(--warning);
    color: #fde68a;
    animation: alertSlideIn 0.4s ease;
}

.alert-critical {
    background: rgba(239, 68, 68, 0.12);
    border-left-color: var(--danger);
    color: #fca5a5;
    animation: alertSlideIn 0.4s ease;
}

/* Slide-in animation for new alerts */
@keyframes alertSlideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* Flash rojo en la tarjeta con valor fuera de rango */
@keyframes cardFlash {
    0%   { border-color: var(--border-glass); box-shadow: 0 8px 32px 0 rgba(0,0,0,0.3); }
    25%  { border-color: var(--danger);       box-shadow: 0 0 20px rgba(239,68,68,0.6); }
    75%  { border-color: var(--danger);       box-shadow: 0 0 20px rgba(239,68,68,0.6); }
    100% { border-color: var(--border-glass); box-shadow: 0 8px 32px 0 rgba(0,0,0,0.3); }
}

.card-alert-flash {
    animation: cardFlash 1s ease;
}

/* ====== Botón Reporte PDF ====== */
.btn-report {
    background: linear-gradient(135deg, #7f1d1d, #ef4444);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 0.5rem 1.1rem;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-report:hover {
    background: linear-gradient(135deg, #991b1b, #f87171);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

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

/* ====== Modal de carga del PDF ====== */
.glass-modal {
    background: rgba(15, 17, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.pdf-spinner {
    animation: pdfBounce 0.9s ease-in-out infinite alternate;
    display: inline-block;
}

@keyframes pdfBounce {
    from { transform: scale(1);    opacity: 0.7; }
    to   { transform: scale(1.15); opacity: 1;   }
}