:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --light: #f8fafc;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    
    --bg-color: #f1f5f9;
    --text-color: #334155;
    --card-bg: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] {
    --primary: #3b82f6;
    --bg-color: #0f172a;
    --text-color: #e2e8f0;
    --card-bg: rgba(30, 41, 59, 0.85);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    background-image: 
        radial-gradient(at 40% 20%, hsla(210,100%,74%,0.1) 0px, transparent 50%),
        radial-gradient(at 80% 0%, hsla(189,100%,56%,0.1) 0px, transparent 50%),
        radial-gradient(at 0% 50%, hsla(355,100%,93%,0.1) 0px, transparent 50%);
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 1rem;
}

/* Sidebar */
.sidebar {
    width: 260px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-right: 1px solid var(--glass-border);
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: 1px;
}

.nav-item {
    padding: 0.8rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 0.5rem;
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-item:hover, .nav-item.active {
    background: var(--primary);
    color: white;
    transform: translateX(5px);
}

/* Main Content */
.main-wrapper {
    margin-left: 260px;
    width: calc(100% - 260px);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    height: 70px;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 90;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.content {
    padding: 2rem;
    flex: 1;
}

.footer {
    padding: 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--secondary);
    border-top: 1px solid var(--glass-border);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.kpi-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.kpi-card h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.kpi-card .value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

th {
    font-weight: 600;
    color: var(--secondary);
    text-transform: uppercase;
    font-size: 0.8rem;
}

/* Badges */
.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge.bajo { background: var(--success); color: white; }
.badge.medio { background: var(--warning); color: white; }
.badge.alto, .badge.critico { background: var(--danger); color: white; }

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-color);
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.05); }
}

.animate-fade-in {
    animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Executive Login Styles */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100vw;
    background: radial-gradient(circle at 15% 15%, rgba(37, 99, 235, 0.12) 0%, transparent 45%),
                radial-gradient(circle at 85% 85%, rgba(14, 165, 233, 0.12) 0%, transparent 45%),
                var(--bg-color);
    padding: 1.5rem;
    position: relative;
    overflow-y: auto;
}

.login-container {
    display: flex;
    width: 100%;
    max-width: 1020px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
    overflow: hidden;
    margin: auto;
}

.login-hero-panel {
    flex: 1.1;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #1e3a8a 100%);
    padding: 3.5rem 3rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.login-hero-panel::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.3) 0%, transparent 70%);
    animation: pulseGlow 6s infinite ease-in-out;
}

.login-hero-panel::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
    animation: pulseGlow 8s infinite ease-in-out 1s;
}

.login-form-panel {
    flex: 1;
    padding: 3.5rem 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-brand-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: #38bdf8;
    margin-bottom: 2rem;
    width: fit-content;
}

.login-hero-title {
    font-size: 2.1rem;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
    color: #ffffff;
}

.login-hero-desc {
    font-size: 0.95rem;
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.hero-features-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-top: auto;
    position: relative;
    z-index: 2;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: #cbd5e1;
    font-weight: 500;
}

.hero-feature-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #38bdf8;
    font-size: 0.9rem;
    flex-shrink: 0;
}

/* Security Badge */
.security-badge-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: #64748b;
}

@media (max-width: 850px) {
    .login-container {
        flex-direction: column;
        max-width: 480px;
    }
    .login-hero-panel {
        padding: 2.5rem 2rem;
    }
    .login-form-panel {
        padding: 2.5rem 2rem;
    }
}

/* ==========================================================================
   Standard System Modal Architecture (Soft Warm Off-White #f8fafc / Eye Comfort)
   ========================================================================== */
.modal-overlay,
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.65); /* Backdrop oscuro elegante para aislamiento visual */
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 1000;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    transition: opacity 0.3s ease;
}

.modal-overlay.active,
.modal-backdrop.active,
.modal-overlay[style*="display: flex"],
.modal-backdrop[style*="display: flex"] {
    display: flex;
}

.modal-content,
.modal-dialog {
    width: 95%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2rem;
    position: relative;
    background: #f8fafc !important; /* Blanco suave mate anti-reflejo / Soft light slate */
    color: #1e293b !important;       /* Color de texto oscuro para descanso visual */
    border: 1px solid #e2e8f0 !important;
    box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25) !important;
    border-radius: 1.25rem !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

.modal-content .form-label,
.modal-dialog .form-label,
.modal-content label,
.modal-dialog label {
    color: #334155 !important;
    font-weight: 600;
}

.modal-content .form-control,
.modal-dialog .form-control {
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    color: #1e293b !important;
}

.modal-content .form-control:focus,
.modal-dialog .form-control:focus {
    background: #ffffff !important;
    border-color: #2563eb !important;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15) !important;
}

.modal-content .modal-header,
.modal-dialog .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid #e2e8f0 !important;
}

.modal-content .modal-title,
.modal-dialog .modal-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e3a8a !important;
}

.modal-content .modal-close,
.modal-dialog .modal-close {
    position: static;
    background: #e2e8f0 !important;
    border: 1px solid #cbd5e1 !important;
    font-size: 1.3rem !important;
    font-weight: 700 !important;
    cursor: pointer !important;
    color: #334155 !important;
    transition: all 0.2s ease !important;
    line-height: 1 !important;
    width: 34px !important;
    height: 34px !important;
    border-radius: 8px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0 !important;
    margin: 0 !important;
    flex-shrink: 0 !important;
}

.modal-content .modal-close:hover,
.modal-dialog .modal-close:hover {
    background: #fee2e2 !important;
    border-color: #fca5a5 !important;
    color: #ef4444 !important;
    transform: scale(1.05) !important;
}

.modal-content > .modal-close:not(.modal-header *),
.modal-dialog > .modal-close:not(.modal-header *) {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
}

/* Tarjetas y paneles internos dentro de los modales */
.modal-content .glass-panel,
.modal-dialog .glass-panel,
.modal-content .material-row-card {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04) !important;
}

.modal-content select.form-control option,
.modal-dialog select.form-control option {
    background: #ffffff;
    color: #1e293b;
}

/* ==========================================================================
   Toast Notifications System (Floating top-right alerts)
   ========================================================================== */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 440px;
    width: calc(100% - 40px);
    pointer-events: none;
}

.toast-notification {
    pointer-events: auto;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 0.9rem 1.15rem;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.4;
    animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.toast-notification.toast-success {
    border-left: 5px solid #10b981;
}
.toast-notification.toast-success .toast-icon {
    color: #10b981;
}

.toast-notification.toast-danger,
.toast-notification.toast-error {
    border-left: 5px solid #ef4444;
}
.toast-notification.toast-danger .toast-icon,
.toast-notification.toast-error .toast-icon {
    color: #ef4444;
}

.toast-notification.toast-info {
    border-left: 5px solid #3b82f6;
}
.toast-notification.toast-info .toast-icon {
    color: #3b82f6;
}

.toast-notification.toast-warning {
    border-left: 5px solid #f59e0b;
}
.toast-notification.toast-warning .toast-icon {
    color: #f59e0b;
}

.toast-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
}

.toast-body {
    flex: 1;
    word-break: break-word;
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--secondary);
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
    transition: color 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
}
.toast-close:hover {
    color: var(--danger);
    transform: scale(1.15);
}

.toast-hiding {
    opacity: 0;
    transform: translateX(120%);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(120%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}