:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --accent-color: #f59e0b;
    --danger-color: #dc2626;
    --success-color: #16a34a;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --bg-color: #f3f4f6;
    --card-color: #fff;
    --border-color: #e5e7eb;
    --border-radius: 8px;
    --box-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --box-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --transition: all 0.2s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

h1 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
    font-size: 1.75rem;
    letter-spacing: -0.025em;
}

h1 i { color: var(--primary-color); margin-right: 0.5rem; }

h2 {
    color: var(--text-color);
    margin: 1.5rem 0 1rem;
    font-weight: 600;
    font-size: 1.25rem;
}

p { margin-bottom: 1rem; color: var(--text-muted); }

a { color: var(--primary-color); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 0;
    color: white;
    box-shadow: var(--box-shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    height: 64px;
}

.navbar-brand { font-size: 1.25rem; font-weight: 700; }
.navbar-brand .nav-logo { display: flex; align-items: center; gap: 0.5rem; }
.navbar-menu { display: flex; gap: 0.5rem; align-items: center; }

.nav-logo, .nav-item {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-logo:hover, .nav-item:hover {
    background-color: rgba(255,255,255,0.15);
    color: white;
    text-decoration: none;
}

.nav-item i { margin-right: 6px; }
.nav-user { background-color: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); }
.nav-logout { color: #fecaca !important; }
.nav-logout:hover { background-color: var(--danger-color) !important; color: white !important; }

/* Buttons */
button, .button, a.button, .button-secondary, .button-info, .button-danger, .button-success {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
    gap: 0.5rem;
    height: 40px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

button:hover, .button:hover, a.button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--box-shadow);
    text-decoration: none;
}

.button-success { background-color: var(--success-color); }
.button-success:hover { background-color: #15803d; }
.button-danger { background-color: var(--danger-color); }
.button-danger:hover { background-color: #b91c1c; }
.button-secondary { background-color: #6b7280; }
.button-secondary:hover { background-color: #4b5563; }
.button-info { background-color: #0ea5e9; }
.button-info:hover { background-color: #0284c7; }
.small { padding: 0.375rem 0.625rem; font-size: 0.8rem; height: 32px; }

/* Cards */
.card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.card-header {
    background-color: #f9fafb;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 { margin: 0; font-size: 1rem; }
.card-body { padding: 1.5rem; }

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

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

.data-table th, table th {
    background-color: #f9fafb;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 2px solid var(--border-color);
}

.data-table td, table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.data-table tbody tr, table tbody tr { transition: var(--transition); }
.data-table tbody tr:hover, table tbody tr:hover { background-color: #f9fafb; }
.data-table tbody tr:last-child td, table tbody tr:last-child td { border-bottom: none; }

/* Forms */
form {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--border-color);

/* Botones small - altura uniforme, ancho flexible */
.small,
button.small,
.button.small,
.button-info.small,
.button-danger.small,
.button-success.small,
.button-secondary.small {
    min-height: 32px;
    height: auto;
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    line-height: 1.2;
    white-space: nowrap;
}

/* Columna de acciones en tablas */
.actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.actions form {
    margin: 0;
    padding: 0;
    background: none;
    box-shadow: none;
    border: none;
    display: inline-flex;
}

/* Botones disabled */
button:disabled,
.button:disabled {
    background-color: #9ca3af !important;
    cursor: not-allowed;
    transform: none;
    opacity: 0.7;
}

/* Responsive tables - convert to cards on mobile */
@media (max-width: 768px) {
    .table-cards thead {
        display: none !important;
    }
    
    .table-cards tbody tr {
        display: block !important;
        margin-bottom: 1rem;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 1rem;
        background: white;
        box-shadow: var(--box-shadow);
    }
    
    .table-cards tbody td {
        display: flex !important;
        justify-content: space-between;
        align-items: center;
        padding: 0.5rem 0 !important;
        border: none !important;
        border-bottom: 1px solid var(--border-color) !important;
    }
    
    .table-cards tbody td:first-child {
        padding-top: 0 !important;
    }
    
    .table-cards tbody td:last-child {
        border-bottom: none !important;
        padding-top: 0.75rem !important;
    }
    
    .table-cards tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-muted);
        font-size: 0.75rem;
        text-transform: uppercase;
        flex-shrink: 0;
        margin-right: 1rem;
    }
    
    .table-cards tbody td.actions {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.5rem;
    }
    
    .table-cards tbody td.actions::before {
        display: none;
    }
    
    .table-cards tbody td.actions a,
    .table-cards tbody td.actions button {
        width: 100% !important;
        justify-content: center !important;
    }
}