/* Training Tracker - Main Stylesheet */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
}

/* Navigation */
.navbar {
    background-color: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    gap: 1rem;
    list-style: none;
}

.navbar-nav a {
    color: var(--gray-700);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    transition: background-color 0.15s;
}

.navbar-nav a:hover {
    background-color: var(--gray-100);
    color: var(--primary);
}

/* Container */
.container {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-200);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-200);
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    font-size: 1rem;
    transition: border-color 0.15s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea.form-control {
    min-height: 80px;
    resize: vertical;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: 0.375rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
}

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

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

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

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

.btn-outline {
    background-color: white;
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background-color: var(--gray-100);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

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

.table th, .table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    font-weight: 600;
    color: var(--gray-700);
    background-color: var(--gray-50);
}

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

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* Auth pages */
.auth-container {
    max-width: 420px;
    margin: 4rem auto;
    padding: 0 1.5rem;
}

.auth-card {
    background: white;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-200);
    padding: 2rem;
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-200);
    padding: 1.25rem;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-card .stat-label {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Utility */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-1 { gap: 0.5rem; }

a { color: var(--primary); }
a:hover { text-decoration: underline; }

/* Difficulty Scale */
.difficulty-scale {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.difficulty-option {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    gap: 0.25rem;
}

.difficulty-option input[type="radio"] {
    display: none;
}

.difficulty-label {
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    border: 2px solid var(--border);
    font-size: 0.8rem;
    text-align: center;
    transition: all 0.2s ease;
    background: white;
    color: var(--text);
    min-width: 60px;
}

.difficulty-option input[type="radio"]:checked + .difficulty-label {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
    font-weight: 600;
}

.difficulty-label:hover {
    border-color: var(--primary);
}

/* Difficulty badges in tables */
.difficulty-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.difficulty-1 { background: #dcfce7; color: #166534; }
.difficulty-2 { background: #dbeafe; color: #1e40af; }
.difficulty-3 { background: #fef3c7; color: #92400e; }
.difficulty-4 { background: #ffedd5; color: #c2410c; }
.difficulty-5 { background: #fee2e2; color: #991b1b; }

/* Bulk workout inputs */
.bulk-input {
    text-align: center;
}

/* Category stats scope selector */
.category-stats-link {
    display: inline-block;
    margin: 0.25rem;
}