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

:root {
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-hover: #f0f4f8;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --deficit: #dc2626;
    --deficit-bg: #fef2f2;
    --maintenance: #d97706;
    --maintenance-bg: #fffbeb;
    --surplus: #16a34a;
    --surplus-bg: #f0fdf4;
    --danger: #dc2626;
    --success: #16a34a;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 2px 8px rgba(15, 23, 42, 0.07);
    --shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.10);
    --radius: 10px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    font-size: 13px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

.navbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.navbar-brand {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
}
.navbar-brand span { color: var(--primary); }
.nav-links { display: flex; gap: 16px; align-items: center; }
.nav-links a { color: var(--text-muted); font-size: 13px; }
.nav-links a:hover { color: var(--primary); }

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 16px 0 12px;
}
.page-header h1 { font-size: 18px; font-weight: 600; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: white; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-hover); box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--surface-hover); border-color: #cbd5e1; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { opacity: 0.9; }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { opacity: 0.9; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 8px 20px; font-size: 14px; }

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}
.card h2, .card h3 {
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

/* Client Cards */
.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 10px;
    margin: 12px 0;
}
.client-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    transition: all 0.15s ease;
    text-decoration: none;
    color: var(--text);
    border-left: 3px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.client-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    border-color: #cbd5e1;
    color: var(--text);
}
.client-card.deficit { border-left-color: var(--deficit); }
.client-card.maintenance { border-left-color: var(--maintenance); }
.client-card.surplus { border-left-color: var(--surplus); }
.client-name { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.client-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 4px; }
.client-calories { color: var(--text-muted); font-size: 12px; }

/* Badges */
.badge {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
}
.badge-deficit { background: var(--deficit-bg); color: var(--deficit); }
.badge-maintenance { background: var(--maintenance-bg); color: var(--maintenance); }
.badge-surplus { background: var(--surplus-bg); color: var(--surplus); }
.badge-protein { background: #f3e8ff; color: #7c3aed; }
.badge-carb { background: #fffbeb; color: #d97706; }
.badge-fat { background: #fce7f3; color: #db2777; }
.badge-sugar { background: #ecfeff; color: #0891b2; }
.badge-inactive { background: #f1f5f9; color: #94a3b8; }
.week-badge { background: var(--primary-light); color: var(--primary); padding: 1px 8px; border-radius: 10px; font-size: 11px; font-weight: 500; }

/* Goal Buttons */
.goal-selector { display: flex; gap: 8px; margin: 10px 0; }
.goal-btn {
    flex: 1;
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.goal-btn:hover { border-color: #94a3b8; }
.goal-btn.selected { border-color: var(--primary); background: var(--primary-light); color: var(--primary); }

/* Forms */
.form-group { margin-bottom: 10px; }
.form-group label {
    display: block;
    margin-bottom: 3px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
}
.form-control {
    width: 100%;
    padding: 6px 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 13px;
    transition: border-color 0.15s;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(37,99,235,0.1);
}
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-row-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 7px 10px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg);
}
tbody tr { transition: background 0.1s ease; }
tbody tr:hover { background: var(--surface-hover); }
tbody tr:last-child td { border-bottom: none; }

/* Macro Display */
.macro-bar {
    display: flex;
    gap: 10px;
    margin: 10px 0;
}
.macro-item {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px;
    text-align: center;
}
.macro-value {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 2px;
}
.macro-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.3px; }
.macro-item.calories .macro-value { color: var(--primary); }
.macro-item.protein .macro-value { color: #7c3aed; }
.macro-item.carbs .macro-value { color: #d97706; }
.macro-item.fats .macro-value { color: #db2777; }

/* Food Source Picker */
.food-picker { margin: 10px 0; }
.food-picker h4 { margin-bottom: 6px; font-size: 12px; font-weight: 600; }
.food-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}
.food-chip {
    padding: 4px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
}
.food-chip:hover { border-color: #94a3b8; }
.food-chip.selected {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

/* Adjust Buttons (Surplus) */
.adjust-section {
    display: flex;
    gap: 8px;
    margin: 10px 0;
    align-items: center;
}
.adjust-btn {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
    transition: all 0.15s;
}
.adjust-btn:hover { background: var(--surface-hover); }
.adjust-btn.carbs { border-color: #d97706; color: #d97706; }
.adjust-btn.carbs:hover { background: var(--maintenance-bg); }
.adjust-btn.fats { border-color: #db2777; color: #db2777; }
.adjust-btn.fats:hover { background: #fce7f3; }

/* Plan Output */
.plan-output {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px 20px;
    font-family: 'Segoe UI', system-ui, sans-serif;
    font-size: 13px;
    line-height: 1.7;
    white-space: pre-wrap;
    max-height: 70vh;
    overflow-y: auto;
    color: var(--text);
}
.copy-btn {
    position: sticky;
    top: 0;
    float: right;
    padding: 5px 14px;
    background: var(--success);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    z-index: 10;
}
.copy-btn:hover { opacity: 0.9; }
.copy-btn.copied { background: var(--primary); }

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background:
        radial-gradient(1200px 500px at 50% -10%, rgba(37, 99, 235, 0.08), transparent 60%),
        var(--bg);
}
.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 32px;
    width: 100%;
    max-width: 360px;
    box-shadow: var(--shadow-lg);
}
.login-card h1 {
    text-align: center;
    margin-bottom: 4px;
    font-size: 20px;
}
.login-card p {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 13px;
}
.login-error {
    background: var(--deficit-bg);
    color: var(--danger);
    padding: 8px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 12px;
    text-align: center;
}

/* Empty State */
.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 30px;
    font-size: 13px;
}
div.empty-state {
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}

/* Per-meal table in editor */
.meal-split-table td { text-align: center; }
.meal-split-table .meal-type { font-size: 11px; color: var(--text-muted); }

/* Preset table in settings */
.preset-table { margin: 0; }
.preset-table th { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.preset-table td { padding: 5px 8px; vertical-align: middle; }
.preset-table .preset-input {
    width: 70px;
    padding: 4px 6px;
    font-size: 13px;
    text-align: center;
    background: var(--bg);
}
.preset-table .preset-input:focus {
    background: var(--surface);
}

/* Admin navbar — dark theme */
.navbar-admin {
    background: #1e293b;
    border-bottom: 1px solid #334155;
}
.navbar-admin .navbar-brand { color: #f1f5f9; }
.navbar-admin .navbar-brand span { color: #f59e0b; }
.navbar-admin .nav-links a { color: #94a3b8; }
.navbar-admin .nav-links a:hover { color: #f1f5f9; }

/* Admin stat cards */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
}
.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}
.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

/* Mass action toolbar */
.mass-action-bar {
    display: none;
    background: #1e293b;
    color: #f1f5f9;
    padding: 10px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    align-items: center;
    gap: 12px;
    font-size: 13px;
}
.mass-action-bar.active { display: flex; }
.mass-action-bar .btn { font-size: 12px; }

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 0 12px; }

    .form-row, .form-row-3, .form-row-4 { grid-template-columns: 1fr; }
    .macro-bar { flex-direction: column; }
    .goal-selector { flex-direction: column; }
    .client-grid { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: 1fr; gap: 10px; margin-bottom: 16px; }
    .page-header { flex-direction: column; gap: 8px; align-items: flex-start; }

    /* Navbar wraps to a second line instead of overflowing */
    .navbar .container { flex-wrap: wrap; gap: 4px 14px; }
    .nav-links { gap: 14px; flex-wrap: wrap; }

    /* Tabs scroll sideways instead of squishing when there are several */
    .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .tab { white-space: nowrap; flex-shrink: 0; padding: 8px 12px; }

    /* Wide tables scroll horizontally within their card */
    .card { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { width: auto; min-width: 100%; }
    th, td { white-space: nowrap; }

    /* 16px inputs prevent iOS zoom-on-focus; roomier tap targets */
    .form-control { font-size: 16px; padding: 8px 10px; }
    .btn { padding: 8px 14px; }
    .btn-sm { padding: 6px 10px; }
}

@media (max-width: 420px) {
    body { font-size: 13px; }
    .navbar-brand { font-size: 14px; }
    .nav-links { gap: 10px; }
    .nav-links a { font-size: 12px; }
    .card { padding: 12px; }
    .login-card { padding: 24px 20px; }
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 12px;
}
.tab {
    padding: 8px 16px;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    font-size: 13px;
    transition: all 0.15s;
    user-select: none;
}
.tab:hover { color: var(--text); background: var(--surface-hover); border-radius: 6px 6px 0 0; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* Stat cards — subtle depth to match the rest */
.stat-card { box-shadow: var(--shadow-sm); border-radius: var(--radius); }

/* Form controls — gentle hover affordance */
.form-control:hover:not(:focus) { border-color: #cbd5e1; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Meal plan output view */
.plan-day-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 18px 0 8px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}
.plan-day-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}
.plan-meal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 10px;
    box-shadow: var(--shadow-sm);
}
.plan-meal-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    padding-bottom: 8px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.plan-meal-macros { color: var(--text-muted); font-size: 12px; font-weight: 600; white-space: nowrap; }
.plan-row {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 4px 0;
}
.plan-row-label { flex-shrink: 0; min-width: 80px; text-align: center; }
.plan-row-text { font-size: 13px; line-height: 1.5; }
.plan-notes { white-space: pre-wrap; font-size: 13px; line-height: 1.6; }