/* TAMSNZ Minimalist Theme */

:root {
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --bg-body: #f9fafb;
    --bg-card: #ffffff;
    --border-color: #e5e7eb;
    --accent: #2563eb;
    --accent-soft: #eff6ff;
    --success: #059669;
    --success-soft: #ecfdf5;
    --danger: #dc2626;
    --danger-soft: #fef2f2;
    --warning: #d97706;
    --warning-soft: #fffbeb;
    --navy: #091161;
}

* {
    -webkit-tap-highlight-color: transparent;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-body);
    font-size: 15px;
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

main {
    flex: 1;
    padding-bottom: 2rem;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-body);
    padding: 1rem;
}

.login-card {
    max-width: 360px;
    width: 100%;
    padding: 2.5rem 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo img {
    max-width: 100px;
    height: auto;
}

/* Navigation - Dark Minimal */
.navbar {
    background-color: var(--navy) !important;
    border-bottom: none;
    padding: 0.5rem 1rem;
}

.navbar-brand {
    font-weight: 600;
    padding: 0;
}

.navbar-brand img {
    height: 44px;
    width: auto;
}

.navbar-dark .navbar-nav .nav-link,
.navbar .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    font-weight: 500;
    font-size: 14px;
    transition: color 0.15s;
}

.navbar .nav-link:hover {
    color: #ffffff !important;
}

.navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.5rem;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.dropdown-toggle {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Mobile Navbar */
@media (max-width: 991.98px) {
    #navbarNav { display: none; }
    #navbarNav.show { display: block !important; }
    
    .navbar-collapse {
        background-color: var(--navy);
        padding: 1rem;
        margin: 0.5rem -1rem -0.5rem -1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .navbar-nav .nav-link {
        padding: 0.875rem 0 !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        font-size: 18px !important;
    }
    
    .dropdown-menu {
        background-color: rgba(255, 255, 255, 0.05);
        border: none;
    }
    
    .dropdown-item {
        color: rgba(255, 255, 255, 0.8);
        font-size: 17px;
        padding: 0.75rem 1rem;
    }
    
    .dropdown-item:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: white;
    }
}

/* Cards - Clean */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: none;
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    font-weight: 600;
    font-size: 14px;
}

.card-body {
    padding: 1.25rem;
}

/* Stat Cards */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.5rem;
}

.stat-card.positive .stat-value { color: var(--success); }
.stat-card.negative .stat-value { color: var(--danger); }
.stat-card.accent .stat-value { color: var(--accent); }

/* Mini Stats */
.mini-stat {
    text-align: center;
    padding: 1.25rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.mini-stat .value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.mini-stat .label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.mini-stat.positive .value { color: var(--success); }
.mini-stat.negative .value { color: var(--danger); }

/* List Groups */
.list-group {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.list-group-item {
    border: none;
    border-bottom: 1px solid var(--border-color);
    padding: 0.875rem 1.25rem;
    background: transparent;
    font-size: 14px;
}

.list-group-item:last-child {
    border-bottom: none;
}

.list-group-item-action:hover {
    background: var(--bg-body);
}

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    padding: 0.5rem 1rem;
    transition: all 0.15s ease;
    border: none;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
}

.btn-outline-primary {
    color: var(--accent);
    border: 1px solid var(--accent);
    background: transparent;
}

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

.btn-outline-secondary:hover {
    background: var(--bg-body);
    color: var(--text-primary);
}

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

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

/* Badges */
.badge {
    font-weight: 500;
    font-size: 12px;
    padding: 0.35em 0.65em;
    border-radius: 6px;
}

.badge.bg-primary { background-color: var(--accent-soft) !important; color: var(--accent); }
.badge.bg-success { background-color: var(--success-soft) !important; color: var(--success); }
.badge.bg-danger { background-color: var(--danger-soft) !important; color: var(--danger); }
.badge.bg-warning { background-color: var(--warning-soft) !important; color: var(--warning); }
.badge.bg-secondary { background-color: #f3f4f6 !important; color: var(--text-secondary); }

/* Tables */
.table {
    font-size: 14px;
    margin-bottom: 0;
}

.table th {
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.table-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

/* Form Controls */
.form-control, .form-select {
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    background: var(--bg-card);
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-control-sm {
    padding: 0.375rem 0.75rem;
    font-size: 13px;
}

.form-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 10px;
    font-size: 14px;
    padding: 0.875rem 1rem;
}

.alert-info {
    background: var(--accent-soft);
    color: #1e40af;
}

.alert-success {
    background: var(--success-soft);
    color: #065f46;
}

.alert-warning {
    background: var(--warning-soft);
    color: #92400e;
}

.alert-danger {
    background: var(--danger-soft);
    color: #991b1b;
}

/* Page Header */
.page-header {
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0;
}

/* Balance Display */
.balance-display {
    font-size: 2.5rem;
    font-weight: 700;
}

.balance-positive { color: var(--success); }
.balance-negative { color: var(--danger); }

.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Swimmer Item */
.swimmer-item {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.swimmer-item:last-child {
    border-bottom: none;
}

.swimmer-info strong {
    font-size: 1rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.125rem;
}

/* Form Switch */
.form-switch .form-check-input {
    width: 2.5rem;
    height: 1.25rem;
}

/* Checkbox styling */
.form-check-input {
    border: 2px solid #9ca3af;
    width: 1.25em;
    height: 1.25em;
}

.form-check-input:checked {
    background-color: var(--success);
    border-color: var(--success);
}

/* User list checkboxes */
.user-checkbox {
    border: 2px solid #6b7280;
    width: 1.35em;
    height: 1.35em;
    cursor: pointer;
}

.user-checkbox:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-card) !important;
}

/* Mobile */
@media (max-width: 576px) {
    body {
        font-size: 17px;
    }
    .page-header h1 { font-size: 1.35rem; }
    .stat-card { padding: 1rem; }
    .stat-card .stat-value { font-size: 1.5rem; }
    .card-body { padding: 1rem; }
    h2.fw-bold { font-size: 1.35rem !important; }
    
    /* Larger text for mobile readability */
    .swimmer-info strong { font-size: 1.1rem; }
    .swimmer-info small, .swimmer-item small { font-size: 0.95rem; }
    .list-group-item { font-size: 16px; }
    .table { font-size: 15px; }
    .btn { font-size: 15px; }
    .form-control, .form-select { font-size: 16px; }
    .form-label { font-size: 15px; }
    .badge { font-size: 13px; }
    .alert { font-size: 15px; }
    .text-muted, small { font-size: 0.95rem !important; }
    p, .card-text { font-size: 16px; }
    h4 { font-size: 1.25rem; }
    h5 { font-size: 1.1rem; }
}

/* Touch-friendly */
@media (hover: none) {
    .btn { min-height: 44px; }
    .list-group-item { padding: 0.875rem 1.25rem; }
}

/* Dropdown */
.dropdown-menu {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    padding: 0.5rem;
}

.dropdown-item {
    font-size: 14px;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
}

.dropdown-item:hover {
    background: var(--bg-body);
}

/* Free session row */
.free-session-row {
    border-top: 1px solid var(--border-color);
    padding-top: 0.5rem;
    margin-top: 0.5rem;
}

/* Utility */
.btn { user-select: none; }