:root {
    --primary-color: #0f172a;
    --secondary-color: #1e293b;
    --accent-color: #3b82f6;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --border-color: #334155;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.85)), url('background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: var(--primary-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Login Page Styles */
.login-page {
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.6) 0%, rgba(30, 27, 75, 0.7) 100%), url('background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.login-container {
    background-color: var(--secondary-color);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-icon {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.login-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.btn-login, .btn-primary {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-login:hover, .btn-primary:hover {
    background-color: #2563eb;
}

.error-message {
    color: var(--danger-color);
    background-color: rgba(239, 68, 68, 0.1);
    padding: 0.75rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-align: center;
}

.login-footer {
    margin-top: 2rem;
    text-align: center;
}

.login-footer p {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Dashboard Styles */
.dashboard-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: 260px;
    background-color: var(--secondary-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-info {
    padding: 1.5rem;
    background-color: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
}

.nav-links {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 6px;
    margin-bottom: 0.5rem;
    transition: all 0.2s;
    cursor: pointer;
}

.nav-item:hover, .nav-item.active {
    background-color: var(--primary-color);
    color: var(--text-color);
}

.nav-item i {
    width: 25px;
    margin-right: 10px;
}

.logout-btn {
    margin-top: auto;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    color: var(--danger-color);
}

.main-content {
    flex: 1;
    overflow-y: auto;
    background-color: transparent;
    padding: 2rem;
}

.content-header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card {
    background-color: var(--secondary-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.grid-cols-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.grid-cols-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.stat-card {
    background-color: var(--secondary-color);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-color);
    margin: 0.5rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-muted);
    font-weight: 600;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-danger { background-color: rgba(239, 68, 68, 0.2); color: var(--danger-color); }
.badge-success { background-color: rgba(34, 197, 94, 0.2); color: var(--success-color); }
.badge-warning { background-color: rgba(245, 158, 11, 0.2); color: var(--warning-color); }

.hidden {
    display: none !important;
}

/* Note Cards */
.note-card {
    background-color: var(--secondary-color);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: transform 0.2s;
}

.note-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.note-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.note-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    gap: 1rem;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
}

.note-content {
    line-height: 1.6;
    white-space: pre-wrap;
}

.urgency-Information { border-left-color: var(--accent-color); }
.urgency-Importante { border-left-color: var(--warning-color); }
.urgency-Urgente { border-left-color: var(--danger-color); }

/* Mobile responsive */
@media (max-width: 768px) {
    .dashboard-layout {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
    }
    .grid-cols-2, .grid-cols-3 {
        grid-template-columns: 1fr;
    }
}