:root {
    --bg-dark: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.05);
    
    /* Dynamic Primary (Default Indigo) */
    --primary-h: 239;
    --primary-s: 84%;
    --primary-l: 67%;
    
    --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-hover: hsl(var(--primary-h), var(--primary-s), calc(var(--primary-l) - 10%));
    --primary-light: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.15);
    
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Outfit', -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1 { font-size: 2rem; font-weight: 700; margin-bottom: 0.5rem; }
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 1rem; }
p { color: var(--text-muted); font-size: 0.9rem; }

/* Layout Grid */
.container {
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
    max-width: 1200px;
}

.grid {
    display: grid;
    gap: 1.5rem;
}
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-cols-2, .grid-cols-4 { grid-template-columns: 1fr; }
}

/* Glass Card */
.glass-card {
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-light);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}
.form-control {
    width: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: box-shadow 0.2s, border-color 0.2s;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.roadmap-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: linear-gradient(135deg, #818cf8, #c084fc);
    color: white;
    font-size: 0.65rem;
    padding: 0.15rem 0.5rem;
    border-radius: 2rem;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.4);
    pointer-events: none;
}

/* Marco 5: Notification Bell */
.nav-notifications {
    position: relative;
    margin-right: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.3s;
    display: flex;
    align-items: center;
}

.nav-notifications:hover {
    color: var(--primary);
}

.bell-icon.pulse {
    animation: pulse-bell 2s infinite;
    color: var(--warning);
}

@keyframes pulse-bell {
    0% { transform: scale(1); filter: drop-shadow(0 0 0 rgba(245, 158, 11, 0)); }
    50% { transform: scale(1.15); filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.6)); }
    100% { transform: scale(1); filter: drop-shadow(0 0 0 rgba(245, 158, 11, 0)); }
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -8px;
    background: var(--danger);
    color: white;
    font-size: 0.6rem;
    padding: 0.1rem 0.35rem;
    border-radius: 1rem;
    font-weight: 800;
    border: 2px solid var(--bg-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s, transform 0.1s;
    color: white;
    font-family: inherit;
    font-size: 1rem;
    gap: 0.5rem;
}
.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}
.btn:active:not(:disabled) { transform: scale(0.98); }
.btn-primary { background-color: var(--primary); }
.btn-primary:hover:not(:disabled) { background-color: var(--primary-hover); }
.btn-success { background-color: var(--success); }
.btn-danger { background-color: var(--danger); }
.btn-warning { background-color: var(--warning); }
.btn-block { width: 100%; }

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
th {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
}

/* Utility */
.hidden { display: none !important; }
.view-section {
    animation: fadeIn 0.4s ease-out;
}

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

.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.flex { display: flex; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.items-center { align-items: center; }

/* Status Badges */
.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-worked { background-color: rgba(16, 185, 129, 0.2); color: #34d399; }
.badge-medical { background-color: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.badge-absent { background-color: rgba(239, 68, 68, 0.2); color: #f87171; }
.badge-vacation { background-color: rgba(99, 102, 241, 0.2); color: #818cf8; }

/* Tabs Component */
.admin-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid rgba(255,255,255,0.1);
    padding-bottom: 0.5rem;
}
.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem 1rem;
    transition: color 0.2s;
    font-family: inherit;
}
.tab-btn:hover { color: var(--text-main); }
.tab-btn.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    margin-bottom: -0.65rem;
}

/* Modal Overlay */
#modalBackdrop {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    z-index: 9999;
}
.modal-box {
    background-color: var(--bg-dark);
    border: 1px solid var(--primary);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.5);
    border-radius: 1rem;
    padding: 2rem;
    width: 90%;
    max-width: 500px;
}

/* Marco 4: Roadmap Modules */
.tab-btn.tab-roadmap {
    opacity: 0.6;
    filter: grayscale(0.4);
    position: relative;
    border: 1px dashed rgba(255,255,255,0.2) !important;
    font-size: 0.8rem !important;
    border-radius: 6px;
    margin-right: 4px;
}

.tab-btn.tab-roadmap:hover {
    opacity: 1;
    filter: grayscale(0);
    border-color: var(--warning) !important;
    background: rgba(255,255,255,0.05);
}

.badge-ia {
    font-size: 0.55rem;
    background: var(--warning);
    color: var(--bg-dark);
    padding: 1px 4px;
    border-radius: 4px;
    font-weight: 800;
    margin-left: 4px;
    text-transform: uppercase;
    vertical-align: middle;
}