:root {
    /* --- TEMA DARK (Por defecto) --- */
    --bg-main: #0f1214;
    --bg-gradient: radial-gradient(circle at top center, #1a2a3a 0%, #0f1214 80%);
    --text-main: #e0e0e0;
    --text-title: #ffffff;
    --card-bg: rgba(20, 25, 30, 0.85);
    --card-border: rgba(0, 210, 255, 0.3);
    --cyan-primary: #00d2ff;
    --shadow-color: rgba(0, 210, 255, 0.1);
    --input-bg: rgba(0, 0, 0, 0.3);
    --input-border: rgba(255, 255, 255, 0.15);
    --input-text: #ffffff;
    --btn-bg: rgba(0, 85, 164, 0.6);
    --btn-hover: #00d2ff;
    --table-header-bg: rgba(0, 210, 255, 0.1);
    --table-row-hover: rgba(255, 255, 255, 0.05);
    --alert-bg: rgba(0, 0, 0, 0.4);
    --warranty-card-bg: rgba(0, 0, 0, 0.25);
    --warranty-header-bg: rgba(255, 255, 255, 0.02);
    --progress-bg: rgba(255, 255, 255, 0.1);
}

[data-theme='light'] {
    /* --- TEMA LIGHT --- */
    --bg-main: #f8f9fa;
    --bg-gradient: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    --text-main: #333333;
    --text-title: #1a1d21;
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.1);
    --cyan-primary: #00768a;
    /* Color más oscuro para legibilidad */
    --shadow-color: rgba(0, 0, 0, 0.1);
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --input-text: #212529;
    --btn-bg: #00768a;
    --btn-hover: #005662;
    --table-header-bg: #e9ecef;
    --table-row-hover: #f1f3f5;
    --alert-bg: #f1f3f5;
    --warranty-card-bg: #ffffff;
    --warranty-header-bg: #f8f9fa;
    --progress-bg: #dee2e6;
}

body {
    background-color: var(--bg-main) !important;
    background: var(--bg-gradient) !important;
    color: var(--text-main) !important;
    min-height: 100vh;
}

/* Protegemos el header y elementos de navegación - Estos deben mantenerse inmutables */
.navbar .container-fluid,
header .container-fluid,
nav .container-fluid {
    max-width: none !important;
    width: 100% !important;
}


/* --- TÍTULOS --- */
.content-wrapper h1,
.content-wrapper h2,
.content-wrapper h3,
.content-wrapper h4,
.content-wrapper h5 {
    color: var(--text-title) !important;
}

[data-theme='dark'] .content-wrapper h1,
[data-theme='dark'] .content-wrapper h2,
[data-theme='dark'] .content-wrapper h3,
[data-theme='dark'] .content-wrapper h4,
[data-theme='dark'] .content-wrapper h5 {
    text-shadow: 0 0 10px rgba(0, 210, 255, 0.3);
}

[data-theme='light'] .content-wrapper .text-muted {
    color: #555555 !important;
}

[data-theme='dark'] .content-wrapper .text-muted {
    color: #e0e0e0 !important;
}

/* --- TARJETA HUD --- */
.tech-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 20px var(--shadow-color);
    padding: 2rem;
    margin-bottom: 2rem;
}

/* --- FORMULARIOS --- */
.content-wrapper .form-control {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    color: var(--input-text) !important;
    font-size: 1.1rem;
    padding: 0.8rem;
}

[data-theme='light'] .content-wrapper .form-control {
    border-color: #adb5bd !important;
}

.content-wrapper .form-control:focus {
    background-color: var(--input-bg) !important;
    border-color: var(--cyan-primary) !important;
    box-shadow: 0 0 0 0.25rem rgba(0, 210, 255, 0.25);
}

.content-wrapper .form-control::placeholder {
    color: #6c757d;
    opacity: 0.8;
}

/* Input Groups Fix */
.content-wrapper .input-group-text {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--cyan-primary);
}

[data-theme='light'] .content-wrapper .input-group-text {
    background-color: #f1f3f5;
    border-color: #adb5bd;
}

/* Fix date input icon */
[data-theme='dark'] ::-webkit-calendar-picker-indicator {
    filter: invert(1);
}

.content-wrapper .form-label {
    color: var(--cyan-primary);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.btn-action {
    background: var(--btn-bg);
    border: 1px solid var(--cyan-primary);
    color: #fff !important;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 0.8rem;
    transition: all 0.3s ease;
}

.btn-action:hover {
    background: var(--btn-hover);
    color: #000 !important;
    box-shadow: 0 0 15px var(--cyan-primary);
}

[data-theme='light'] .btn-action:hover {
    color: #fff !important;
}

/* --- TABLAS --- */
.table-custom {
    color: var(--text-main);
    border-color: var(--card-border);
    width: 100%;
}

.table-custom thead th {
    background-color: var(--table-header-bg) !important;
    color: var(--cyan-primary) !important;
    border-bottom: 2px solid var(--cyan-primary);
    text-transform: uppercase;
    font-size: 0.85rem;
    padding: 1rem;
}

.table-custom td {
    border-bottom: 1px solid var(--card-border);
    vertical-align: middle;
    padding: 1rem;
    background-color: transparent !important;
}

.table-custom .td-element {
    color: var(--text-title) !important;
}

.table-custom tr:hover td {
    background-color: var(--table-row-hover) !important;
}

.icon-check {
    color: #0dcaf0;
}

.icon-replace {
    color: #dc3545;
}

[data-theme='dark'] .icon-replace {
    text-shadow: 0 0 5px rgba(220, 53, 69, 0.5);
}

.text-action-replace {
    color: #ff6b6b;
    font-weight: 700;
}

[data-theme='light'] .text-action-replace {
    color: #c30000;
}

.text-action-check {
    color: #0dcaf0;
}

[data-theme='light'] .text-action-check {
    color: #00768a;
}

/* --- ALERTAS --- */
.alert-hud {
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1.5rem;
    border-left: 4px solid;
    background: var(--alert-bg);
}

.content-wrapper .alert-success {
    background: rgba(25, 135, 84, 0.15) !important;
    color: #198754 !important;
    border-color: #198754 !important;
}

[data-theme='dark'] .content-wrapper .alert-success {
    color: #75b798 !important;
}

.content-wrapper .alert-danger {
    background: rgba(220, 53, 69, 0.15) !important;
    color: #dc3545 !important;
    border-color: #dc3545 !important;
}

[data-theme='dark'] .content-wrapper .alert-danger {
    color: #ea868f !important;
}

/* --- GARANTÍAS --- */
.warranty-card-dark {
    background: var(--warranty-card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    transition: transform 0.2s;
    box-shadow: 0 4px 6px var(--shadow-color);
}

.warranty-card-dark:hover {
    border-color: var(--cyan-primary);
}

.warranty-header {
    border-bottom: 1px solid var(--card-border);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--warranty-header-bg);
}

.progress-dark {
    background-color: var(--progress-bg);
    height: 6px;
    border-radius: 4px;
    margin-top: 0.5rem;
}

/* Theme Toggle Button */
.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);
}

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

/* Utility classes to avoid inline styles */
.text-cyan {
    color: var(--cyan-primary) !important;
}

.border-cyan {
    border-color: var(--cyan-primary) !important;
}

.font-monospace {
    font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}