/* RepGen Unified Design System */

:root {
    /* Color Palette */
    --primary-dark: #0B1F3B;      /* Main dark blue */
    --primary-light: #1e3a5f;     /* Lighter blue for gradients */
    --white: #FFFFFF;              /* Pure white */
    
    /* Neutral Grays */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Accent Colors */
    --success: #16a34a;
    --warning: #f97316;
    --danger: #dc2626;
    --info: #3b82f6;

    /* Semantic Colors */
    --text-primary: #0B1F3B;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --background: #FFFFFF;
    --background-secondary: #f8fafc;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
}

/* Icon system */
.icon {
  width: 1em;
  height: 1em;
  display: inline-block;
  vertical-align: -0.125em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Base Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-primary);
    background-color: var(--background-secondary);
    margin: 0;
    padding: 0;
    line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--primary-dark);
    margin-top: 0;
}

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 2rem; font-weight: 700; }
h3 { font-size: 1.5rem; font-weight: 600; }

a {
    color: var(--primary-dark);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-light);
}

/* Components */

/* Navigation Header */
.nav-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
    color: var(--white);
    padding: 1rem 2rem;
    box-shadow: 0 2px 8px rgba(11, 31, 59, 0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.nav-link:hover {
    color: var(--white);
    text-decoration: underline;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid var(--gray-100);
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(11, 31, 59, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(11, 31, 59, 0.4);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-dark);
    border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--primary-dark);
}

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

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

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
    box-sizing: border-box; /* Ensure padding doesn't affect width */
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(11, 31, 59, 0.1);
}

/* Tables */
.table-container {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    overflow-x: auto;
}

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

.table th {
    background: var(--primary-dark);
    color: var(--white);
    font-weight: 600;
    padding: 1rem;
    text-align: left;
}

.table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background-color: var(--gray-50);
}

/* Utilities */
.text-center { text-align: center; }
.mb-4 { margin-bottom: 1rem; }
.mt-4 { margin-top: 1rem; }
.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-4 { gap: 1rem; }

/* Read-only indicator */
.read-only-badge {
    display: inline-block;
    background: var(--gray-200);
    color: var(--gray-600);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-left: 0.5rem;
}