:root {
    /* --- TEMA DARK (Por defecto) --- */
    --bg-main: #050a05;
    --bg-gradient: radial-gradient(circle at 50% 30%, #0f2e18, #000000);
    --text-main: #e0e0e0;
    --text-title: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.5);
    --card-bg: rgba(10, 20, 15, 0.9);
    --card-border: rgba(0, 255, 157, 0.2);
    --input-bg: #0a110d;
    --input-border: #1f4d36;
    --input-focus-border: #00ff9d;
    --input-text: #ffffff;
    --lfp-green: #00ff9d;
    --lfp-blue: #0dcaf0;
    --lfp-yellow: #ffc107;
    --lfp-red: #ff3333;
    --btn-gradient: linear-gradient(135deg, #00b09b, #96c93d);
    --btn-hover-gradient: linear-gradient(135deg, #00e6cb, #b4f046);
    --shadow-color: rgba(0, 0, 0, 0.8);
    --neon-shadow: rgba(0, 255, 157, 0.3);
    --stat-box-bg: rgba(0, 0, 0, 0.4);
}

[data-theme='light'] {
    /* --- TEMA LIGHT --- */
    --bg-main: #f0f4f0;
    --bg-gradient: radial-gradient(circle at 50% 30%, #e8f5e9, #f0f4f0);
    --text-main: #2e3d31;
    --text-title: #1b2e20;
    --text-muted: rgba(46, 61, 49, 0.6);
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-border: rgba(0, 122, 77, 0.2);
    --input-bg: #ffffff;
    --input-border: #c8d6cc;
    --input-focus-border: #008f5d;
    --input-text: #1b2e20;
    --lfp-green: #008f5d;
    --lfp-blue: #0076a8;
    --lfp-yellow: #a87d00;
    --lfp-red: #cc2a2a;
    --btn-gradient: linear-gradient(135deg, #008f5d, #78a32b);
    --btn-hover-gradient: linear-gradient(135deg, #00a86b, #8ebf33);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --neon-shadow: rgba(0, 143, 93, 0.2);
    --stat-box-bg: rgba(0, 0, 0, 0.05);
}

body {
    background-color: var(--bg-main);
    background-image: var(--bg-gradient);
    color: var(--text-main);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.hud-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

/* Inputs HUD */
.hud-input {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--input-border);
    color: var(--input-text) !important;
    font-weight: 500;
    text-align: center;
    padding: 12px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.hud-input:focus {
    background-color: var(--input-bg) !important;
    border-color: var(--input-focus-border);
    box-shadow: 0 0 15px var(--neon-shadow);
}

.input-group-text {
    background-color: var(--stat-box-bg);
    border: 1px solid var(--input-border);
    color: var(--lfp-green);
}

.hud-input::placeholder {
    color: var(--text-muted) !important;
    opacity: 1;
    font-size: 0.9rem;
}

/* Botón */
.btn-lfp {
    background: var(--btn-gradient);
    border: none;
    color: #fff;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px var(--neon-shadow);
    transition: all 0.3s ease;
}

[data-theme='dark'] .btn-lfp {
    color: #000;
}

.btn-lfp:hover {
    background: var(--btn-hover-gradient);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--neon-shadow);
}

[data-theme='dark'] .btn-lfp:hover {
    color: #000;
}

/* ESTADOS VISUALES */
.status-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    background: rgba(0, 0, 0, 0.1);
    border: 4px solid #333;
    transition: all 0.5s ease;
}

[data-theme='dark'] .status-circle {
    background: rgba(0, 0, 0, 0.3);
}

.st-calibrado .status-circle {
    border-color: var(--lfp-green);
    color: var(--lfp-green);
    box-shadow: 0 0 30px var(--neon-shadow);
}

.st-calibrado .status-title {
    color: var(--lfp-green);
}

.st-estable .status-circle {
    border-color: var(--lfp-blue);
    color: var(--lfp-blue);
    box-shadow: 0 0 30px rgba(13, 202, 240, 0.2);
}

.st-estable .status-title {
    color: var(--lfp-blue);
}

.st-riesgo .status-circle {
    border-color: var(--lfp-yellow);
    color: var(--lfp-yellow);
    box-shadow: 0 0 30px rgba(255, 193, 7, 0.2);
}

.st-riesgo .status-title {
    color: var(--lfp-yellow);
}

.st-critico .status-circle {
    border-color: var(--lfp-red);
    color: var(--lfp-red);
    box-shadow: 0 0 50px rgba(255, 51, 51, 0.4);
    animation: pulse-red 2s infinite;
}

.st-critico .status-title {
    color: var(--lfp-red);
}

@keyframes pulse-red {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 51, 51, 0.4);
    }

    70% {
        box-shadow: 0 0 0 20px rgba(255, 51, 51, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(255, 51, 51, 0);
    }
}

.stat-box {
    background: var(--stat-box-bg);
    border-radius: 8px;
    padding: 10px;
    border: 1px solid var(--card-border);
}

.stat-num {
    font-family: 'Roboto Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-title);
}

.stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    display: block;
}

.tm-title {
    color: var(--text-title) !important;
}

.tm-subtitle {
    color: var(--text-muted) !important;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 45px;
    height: 45px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
    border-color: var(--lfp-green);
}

.theme-toggle i {
    font-size: 1.2rem;
    color: var(--lfp-green);
}