/**
 * ============================================================================
 * SCADA Delta - Estilos Principales
 * ============================================================================
 * 
 * Universidad Nacional del Sur
 * Sistema de Monitoreo Hidráulico
 * 
 * Paleta de colores:
 * - Primary: #005b9f (Azul principal)
 * - Primary Dark: #004080 (Azul oscuro)
 * - Primary Light: #007bff (Azul claro)
 * - Accent: #00c6ff (Celeste)
 * 
 * Font: Roboto
 * Framework: Bootstrap 5
 * ============================================================================
 */

/* ============================================================================
   VARIABLES CSS
   ============================================================================ */

:root {
    /* Colores principales */
    --primary: #005b9f;
    --primary-dark: #004080;
    --primary-light: #007bff;
    --accent: #00c6ff;

    /* Colores de estado */
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
    --secondary: #6c757d;

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #007bff, #00c6ff);
    --gradient-header: linear-gradient(135deg, #004080, #005b9f);
    --gradient-card: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);

    /* Dimensiones */
    --sidebar-width: 260px;
    --header-height: 60px;

    /* Sombras */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;

    /* Tipografía */
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --gradient-card: linear-gradient(180deg, #1f242d 0%, #171b22 100%);
    }

    body {
        background-color: #11151c;
        color: #d5dbe3;
    }

    .top-header,
    .main-footer,
    .card,
    .stat-card {
        background-color: #1b212b;
        color: #d5dbe3;
    }

    .table thead th {
        background: #222a36;
        border-bottom-color: #2f3948;
        color: #d5dbe3;
    }

    .table tbody td {
        border-color: #2b3544;
    }

    .table-hover tbody tr:hover {
        background-color: #202835;
    }

    .form-control,
    .form-select {
        background-color: #1e2531;
        border-color: #344154;
        color: #d5dbe3;
    }
}

/* ============================================================================
   RESET Y BASE
   ============================================================================ */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #f0f2f5;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* ============================================================================
   SIDEBAR
   ============================================================================ */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--gradient-header);
    color: #fff;
    z-index: 1000;
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}

.sidebar-logo i {
    font-size: 28px;
    color: var(--accent);
}

.sidebar-user {
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
}

.user-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-avatar i {
    font-size: 28px;
    color: #fff;
}

.user-info {
    flex: 1;
    overflow: hidden;
}

.user-name {
    font-weight: 500;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 12px;
    opacity: 0.8;
}

/* Sidebar Navigation */
.sidebar-nav {
    list-style: none;
    padding: 10px 0;
    margin: 0;
    flex: 1;
}

.sidebar-nav .nav-item {
    margin: 2px 0;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.sidebar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.sidebar-nav .nav-item.active .nav-link {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-left-color: var(--accent);
}

.sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
}

.sidebar-nav .nav-divider {
    padding: 15px 20px 10px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 10px;
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
}

.system-info {
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
}

/* ============================================================================
   MAIN CONTENT
   ============================================================================ */

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.main-content.expanded {
    margin-left: 0;
}

/* ============================================================================
   TOP HEADER
   ============================================================================ */

.top-header {
    height: var(--header-height);
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 900;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-toggle {
    color: var(--primary);
    font-size: 20px;
    padding: 8px;
}

.sidebar-toggle:hover {
    color: var(--primary-dark);
}

.breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.breadcrumb-item a {
    color: var(--primary);
}

.breadcrumb-item.active {
    color: var(--secondary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-alert .btn {
    color: var(--secondary);
    font-size: 18px;
}

.header-alert .btn:hover {
    color: var(--danger);
}

.user-dropdown .btn {
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-dropdown .btn i {
    font-size: 24px;
}

.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    padding: 8px 0;
}

.dropdown-item {
    padding: 10px 16px;
    font-size: 14px;
    display: flex;
    align-items: center;
}

.dropdown-item:hover {
    background-color: #f0f7ff;
}

.dropdown-item i {
    width: 20px;
    text-align: center;
    color: var(--primary);
}

/* ============================================================================
   CONTENT AREA
   ============================================================================ */

.content-area {
    flex: 1;
    padding: 20px;
}

.main-footer {
    background: #fff;
    border-top: 1px solid #e0e0e0;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--secondary);
}

/* ============================================================================
   CARDS Y COMPONENTES
   ============================================================================ */

.card {
    border: none;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid #eee;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h5,
.card-header h6 {
    margin: 0;
    font-weight: 500;
    color: var(--primary-dark);
}

.card-body {
    padding: 20px;
}

/* Stats Cards */
.stat-card {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card .stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
}

.stat-card .stat-icon.primary {
    background: var(--gradient-primary);
}

.stat-card .stat-icon.success {
    background: linear-gradient(135deg, #28a745, #5cb85c);
}

.stat-card .stat-icon.warning {
    background: linear-gradient(135deg, #ffc107, #ffdb4d);
}

.stat-card .stat-icon.danger {
    background: linear-gradient(135deg, #dc3545, #ff4757);
}

.stat-card .stat-icon.info {
    background: linear-gradient(135deg, #17a2b8, #00c6ff);
}

.stat-card .stat-info h3 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-dark);
}

.stat-card .stat-info p {
    margin: 0;
    font-size: 13px;
    color: var(--secondary);
}

/* ============================================================================
   TABLAS
   ============================================================================ */

.table {
    margin-bottom: 0;
}

.table thead th {
    background: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
    font-weight: 500;
    color: var(--primary-dark);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 15px;
}

.table tbody td {
    padding: 12px 15px;
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: #f0f7ff;
}

.table-responsive {
    border-radius: 8px;
    overflow: hidden;
}

/* ============================================================================
   FORMULARIOS
   ============================================================================ */

.form-control,
.form-select {
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 91, 159, 0.15);
}

.form-label {
    font-weight: 500;
    color: var(--primary-dark);
    margin-bottom: 5px;
}

.input-group-text {
    background: #f8f9fa;
    border: 1px solid #ddd;
    color: var(--secondary);
}

/* ============================================================================
   BOTONES
   ============================================================================ */

.btn {
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: #fff;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0056b3, #00a8e8);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--secondary);
    border: none;
}

.btn-success {
    background: linear-gradient(135deg, #28a745, #34ce57);
    border: none;
}

.btn-danger {
    background: linear-gradient(135deg, #dc3545, #ff4757);
    border: none;
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: #fff;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* ============================================================================
   BADGES Y ETIQUETAS
   ============================================================================ */

.badge {
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 12px;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.badge-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* ============================================================================
   GAUGE Y INDICADORES
   ============================================================================ */

.gauge-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

.gauge-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-dark);
}

.gauge-label {
    font-size: 14px;
    color: var(--secondary);
}

.tank-level {
    position: relative;
    width: 120px;
    height: 200px;
    background: linear-gradient(180deg, #e9ecef 0%, #dee2e6 100%);
    border-radius: 10px;
    border: 3px solid #adb5bd;
    overflow: hidden;
    margin: 0 auto;
}

.tank-level .water {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--gradient-primary);
    transition: height 0.5s ease;
}

.tank-level .level-marker {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.5);
}

/* ============================================================================
   ALERTAS
   ============================================================================ */

.alert {
    border: none;
    border-radius: 8px;
    padding: 15px 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert i {
    font-size: 20px;
    margin-top: 2px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* ============================================================================
   PÁGINAS DE AUTENTICACIÓN
   ============================================================================ */

.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-header);
    padding: 20px;
}

.auth-card {
    background: #fff;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    overflow: hidden;
}

.auth-header {
    background: var(--gradient-primary);
    padding: 30px;
    text-align: center;
    color: #fff;
}

.auth-header h1 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
}

.auth-header p {
    margin: 10px 0 0;
    opacity: 0.9;
}

.auth-body {
    padding: 30px;
}

.auth-footer {
    padding: 20px 30px;
    background: #f8f9fa;
    text-align: center;
    border-top: 1px solid #eee;
}

.auth-logo {
    font-size: 48px;
    color: #fff;
    margin-bottom: 10px;
}

/* ============================================================================
   PASSWORD STRENGTH INDICATOR
   ============================================================================ */

.password-strength {
    margin-top: 10px;
}

.strength-bar {
    height: 4px;
    border-radius: 2px;
    background: #e9ecef;
    overflow: hidden;
    margin-bottom: 5px;
}

.strength-bar .strength-fill {
    height: 100%;
    transition: all var(--transition-normal);
    width: 0;
}

.strength-bar .strength-fill.weak {
    width: 25%;
    background: var(--danger);
}

.strength-bar .strength-fill.fair {
    width: 50%;
    background: var(--warning);
}

.strength-bar .strength-fill.good {
    width: 75%;
    background: var(--info);
}

.strength-bar .strength-fill.strong {
    width: 100%;
    background: var(--success);
}

.strength-text {
    font-size: 12px;
    color: var(--secondary);
}

/* ============================================================================
   DATATABLES Y PAGINACIÓN
   ============================================================================ */

.datatable-wrapper {
    background: #fff;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.datatable-header {
    padding: 15px 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.datatable-search {
    flex: 1;
    max-width: 300px;
}

.datatable-actions {
    display: flex;
    gap: 10px;
}

.pagination {
    margin: 0;
}

.page-link {
    color: var(--primary);
    border: 1px solid #dee2e6;
    padding: 8px 14px;
}

.page-link:hover {
    background: #f0f7ff;
    border-color: var(--primary);
}

.page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
}

/* ============================================================================
   MODALES
   ============================================================================ */

.modal-content {
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 12px 12px 0 0;
    padding: 15px 20px;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid #eee;
}

/* ============================================================================
   LOADING
   ============================================================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .sidebar-backdrop {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .sidebar-backdrop.show {
        display: block;
    }
}

@media (max-width: 768px) {
    .top-header {
        padding: 0 15px;
    }

    .content-area {
        padding: 15px;
    }

    .stat-card {
        padding: 15px;
    }

    .stat-card .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .stat-card .stat-info h3 {
        font-size: 24px;
    }

    .datatable-header {
        flex-direction: column;
        align-items: stretch;
    }

    .datatable-search {
        max-width: 100%;
    }
}

@media (max-width: 576px) {
    .auth-card {
        border-radius: 10px;
    }

    .auth-header {
        padding: 20px;
    }

    .auth-body {
        padding: 20px;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* ============================================================================
   UTILIDADES
   ============================================================================ */

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

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

.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

.bg-gradient-header {
    background: var(--gradient-header) !important;
}

.rounded-10 {
    border-radius: 10px;
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.cursor-pointer {
    cursor: pointer;
}

.user-select-none {
    user-select: none;
}

/* Animaciones */
.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================================================
   GLASSMORPHISM & PREMIUM SCADA (Industrial 24/7)
   ============================================================================ */

.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

@media (prefers-color-scheme: dark) {
    .glass-card {
        background: rgba(27, 33, 43, 0.8);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
}

.tank-level-sm {
    position: relative;
    background: rgba(0, 0, 0, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.2);
    display: flex;
    align-items: flex-end;
}

.tank-level-sm .water {
    width: 100%;
    background: linear-gradient(180deg, var(--accent) 0%, var(--primary) 100%);
    transition: height 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.tank-level-sm .water::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: rgba(255, 255, 255, 0.3);
    filter: blur(2px);
}

/* Indicador de Sincronización */
.sync-indicator {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--secondary);
}

.sync-dot {
    width: 10px;
    height: 10px;
    background-color: var(--success);
    border-radius: 50%;
    margin-right: 8px;
    box-shadow: 0 0 0 rgba(40, 167, 69, 0.4);
    animation: sync-pulse 2s infinite;
}

@keyframes sync-pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(40, 167, 69, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(40, 167, 69, 0); }
}

/* Tipografía de Dashboard */
.display-stat {
    font-family: var(--font-mono);
    font-weight: 700;
    letter-spacing: -1px;
}

.font-sm { font-size: 0.85rem; }
.font-xs { font-size: 0.75rem; }

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

@media (prefers-color-scheme: dark) {
    ::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.1);
    }
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}