:root {
    /* Color Palette */
    --bg-dark: #f5f6f8; /* Background principal */
    --bg-darker: #ffffff;
    --panel-bg: #ffffff;
    --panel-border: #e0e0e0;
    
    --primary: #F4C20B; /* Amarillo corporativo */
    --primary-hover: #dcae08;
    --accent: #000000;
    --success: #10b981;
    --danger: #ef4444;
    
    --text-main: #000000;
    --text-muted: #6A6C6F; /* Gris intermedio */
    
    /* Effects */
    --glass-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    --glass-blur: none;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
}

/* Glassmorphism Panels -> White Panels */
.glass-panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    box-shadow: var(--glass-shadow);
}

.glass-panel-strong {
    background: #ffffff;
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Layout */
.app-layout {
    display: flex;
    height: 100vh;
    padding: 1rem;
    gap: 1rem;
}

/* Sidebar */
.sidebar {
    width: 280px;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    transition: var(--transition);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.brand-icon {
    color: var(--primary);
    width: 28px;
    height: 28px;
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}

.sidebar-section {
    margin-bottom: 2rem;
}

.sidebar-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    width: 100%;
}

.nav-btn:hover {
    background: rgba(0, 0, 0, 0.04);
    color: var(--accent);
    transform: translateX(4px);
}

.nav-btn.active {
    background: rgba(244, 194, 11, 0.15); /* primary low opacity */
    color: var(--accent);
    border-right: 3px solid var(--primary);
    font-weight: 600;
}

.nav-btn i {
    width: 20px;
    height: 20px;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--panel-border);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(106, 108, 111, 0.1);
    color: var(--text-muted);
    border: 1px solid rgba(106, 108, 111, 0.2);
}

/* Main Workspace */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow: hidden;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    height: 70px;
}

.top-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
}

.main-workspace {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    position: relative;
}

/* Buttons */
.primary-btn {
    background: var(--primary);
    color: var(--accent); /* Black text on yellow */
    border: none;
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    box-shadow: 0 4px 14px rgba(244, 194, 11, 0.3);
}

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(244, 194, 11, 0.4);
}

.secondary-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--text-muted);
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.secondary-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--accent);
    border-color: var(--accent);
}

.danger-btn {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 4px;
    padding: 4px;
    transition: var(--transition);
}

.icon-btn:hover {
    color: var(--accent);
    background: rgba(0, 0, 0, 0.05);
}

.pulse-glow {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(244, 194, 11, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(244, 194, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(244, 194, 11, 0); }
}

.hidden {
    display: none !important;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay:not(.hidden) .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--panel-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent);
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--danger);
    transform: rotate(90deg);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--panel-border);
    display: flex;
    justify-content: flex-end;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.modern-input {
    background: #ffffff;
    border: 1px solid #ced4da;
    color: var(--accent);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    width: 100%;
}

.modern-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(244, 194, 11, 0.2);
}

select.modern-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236A6C6F' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px;
    padding-right: 2.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
    color: var(--accent);
    font-weight: 500;
}

/* Tables / Data Lists */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

.data-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--panel-border);
}

.data-table tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
    cursor: pointer;
}

/* Toasts */
#toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 9999;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    background: #ffffff;
    color: var(--accent);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-left: 4px solid var(--primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease forwards;
    border: 1px solid var(--panel-border);
    border-left-width: 4px;
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* Profile Section Styles */
.profile-card {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}