:root {
    /* Color Palette - Dark Premium Theme */
    --bg-dark: #0a0f1e;
    --bg-panel: #161b2d;
    --bg-hover: #334155;
    --primary: #00923f;
    --primary-hover: #007a34;
    --brand-gold: #c59b27;
    --text-main: #f8fafc;
    --text-muted: #64748b;
    --border: #1e293b;
    
    /* Skills colors */
    --skill-1: #10b981; /* Green - Excellent */
    --skill-2: #34d399; /* Light Green */
    --skill-3: #fbbf24; /* Yellow - Average */
    --skill-4: #f87171; /* Red - Poor */
    --skill-5: #ef4444; /* Dark Red - Very Poor */
    --skill-0: #475569; /* Grey - N/A */
    
    /* Layout */
    --sidebar-width: 260px;
    --font-family: 'Outfit', sans-serif;
    --radius-lg: 12px;
    --radius-md: 8px;
    --radius-sm: 4px;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.5;
    overflow: hidden; /* App feel */
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    color: var(--primary);
}

.nav-links {
    list-style: none;
    padding: 16px 8px;
}

.nav-links li {
    padding: 12px 16px;
    margin-bottom: 8px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-links li:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

.nav-links li.active {
    background-color: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    background: radial-gradient(circle at top right, #1e293b, var(--bg-dark));
}

.view {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.view.active {
    display: block;
}

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

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 32px;
}

.view-header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.view-header p {
    color: var(--text-muted);
}

/* Panels & Cards */
.panel {
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

/* Tables */
.table-container {
    overflow-x: auto;
    background-color: var(--bg-panel);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: center;
}

thead {
    background-color: rgba(0,0,0,0.2);
}

th, td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    white-space: nowrap;
}

th {
    font-weight: 500;
    color: var(--text-muted);
    font-size: 14px;
}

td:last-child, th:last-child {
    border-right: none;
}

tbody tr:hover {
    background-color: rgba(255,255,255,0.02);
}

.emp-name {
    text-align: left;
    font-weight: 500;
    position: sticky;
    left: 0;
    background-color: var(--bg-panel);
    z-index: 10;
}

.skill-input {
    width: 60px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: white;
    padding: 6px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-family: var(--font-family);
    transition: border-color 0.2s;
}

.skill-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Availability Toggle */
.toggle-av {
    cursor: pointer;
    background: var(--skill-1);
    color: #fff;
    border: none;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}
.toggle-av.inactive {
    background: var(--skill-5);
}

/* Number input for Workload */
.workload-input {
    width: 70px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: white;
    padding: 6px;
    border-radius: var(--radius-sm);
    text-align: center;
}

/* Generator Form */
.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

input, select {
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 10px 12px;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 15px;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
}

.time-inputs {
    display: flex;
    align-items: center;
    gap: 10px;
}

.time-inputs input {
    flex: 1;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 15px !important;
    color: var(--text-main) !important;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: none;
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--bg-hover);
}

.btn.lg {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    margin-top: 10px;
}

/* Results section */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    margin-bottom: 20px;
}

.results-header h2 {
    color: var(--primary);
}

.help-text {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 12px;
}

.cell-interactive {
    cursor: pointer;
    transition: background 0.2s;
    font-weight: 500;
}

.cell-interactive:hover {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--primary);
}

.cell-maniobras {
    color: var(--skill-1);
    font-weight: 600;
}

.hidden {
    display: none !important;
}

/* Modal */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    width: 100%;
    max-width: 400px;
}

.modal-content h3 {
    margin-bottom: 8px;
}
.modal-content p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

.modal-content select {
    width: 100%;
    margin-bottom: 24px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}