:root {
    --bg: #f3f6f8;
    --panel: #ffffff;
    --panel-2: #fafcfd;
    --text: #16202a;
    --muted: #667180;
    --border: #dde3ea;
    --primary: #0d7d78;
    --primary-dark: #0a615d;
    --primary-text: #ffffff;
    --primary-tint: #e3f4f2;
    --accent: #2563a8;
    --danger: #b3261e;
    --danger-tint: #fbe9e7;
    --warn: #b3691e;
    --shadow: 0 1px 2px rgba(16,24,32,0.04), 0 4px 16px rgba(16,24,32,0.06);
    --shadow-lg: 0 8px 30px rgba(16,24,32,0.12);
    --radius: 10px;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #10151a;
        --panel: #1a2128;
        --panel-2: #1f2731;
        --text: #eef1f4;
        --muted: #9aa6b2;
        --border: #2b3540;
        --primary: #2bb3a8;
        --primary-dark: #1f8a81;
        --primary-text: #06211f;
        --primary-tint: #123230;
        --accent: #6fb0e8;
        --danger: #ff9a90;
        --danger-tint: #2c1917;
        --warn: #e0a959;
        --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 6px 20px rgba(0,0,0,0.35);
        --shadow-lg: 0 10px 34px rgba(0,0,0,0.5);
    }
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background:
        radial-gradient(1200px 500px at 100% -10%, var(--primary-tint), transparent),
        var(--bg);
    color: var(--text);
    line-height: 1.45;
}
a { color: var(--primary); }

/* ---------- Nav ---------- */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.01em; }
.brand a { color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 10px; }
.brand svg { flex-shrink: 0; }
.nav-right { display: flex; align-items: center; gap: 18px; font-size: 0.92rem; }
nav a:not(.brand a) { color: var(--muted); text-decoration: none; }
nav a:not(.brand a):hover { color: var(--primary); }

main { max-width: 1040px; margin: 0 auto; padding: 28px 24px 80px; }
.page-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }
h1 { margin: 0 0 4px; font-size: 1.6rem; letter-spacing: -0.01em; }
h2 { font-size: 1.05rem; margin: 28px 0 10px; }
.muted { color: var(--muted); }
.notice, .error {
    padding: 11px 16px;
    border-radius: 8px;
    margin: 14px 0;
    font-size: 0.92rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.notice { background: var(--primary-tint); border: 1px solid var(--primary); color: var(--text); }
.error { background: var(--danger-tint); border: 1px solid var(--danger); color: var(--danger); }

/* ---------- Cards / dashboard ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 16px; margin-top: 18px; }
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 18px 16px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.card h2 { margin: 0 0 4px; font-size: 1.08rem; }
.record-count { display: inline-flex; align-items: center; gap: 6px; background: var(--primary-tint); color: var(--primary-dark); font-weight: 600; font-size: 0.85rem; padding: 4px 10px; border-radius: 999px; margin-top: 8px; }
.card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

/* ---------- Buttons ---------- */
.btn, .btn-outline, button, input[type=submit] {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: 8px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: var(--primary-text);
    text-decoration: none;
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 600;
    transition: background 0.12s ease, transform 0.05s ease, box-shadow 0.12s ease;
    font-family: inherit;
}
.btn:hover, button:hover, input[type=submit]:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn:active, button:active { transform: translateY(1px); }
.btn-outline { background: transparent; color: var(--primary); }
.btn-outline:hover { background: var(--primary-tint); }
.btn-secondary { background: var(--panel-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--border); }
.link-btn { background: none; border: none; color: var(--primary); cursor: pointer; padding: 2px 6px; font-weight: 500; }
.link-btn.danger { color: var(--danger); }
.link-btn:disabled { color: var(--muted); cursor: default; opacity: 0.5; }

/* ---------- Forms ---------- */
form { max-width: 720px; }
form.form-narrow { max-width: 480px; }
.field { margin: 0 0 16px; }
.field label.field-label, form > label { display: block; margin: 0 0 16px; font-size: 0.88rem; font-weight: 600; color: var(--text); }
.field-hint { font-weight: 400; color: var(--muted); font-size: 0.8rem; display: block; margin-top: 2px; }
input[type=text], input[type=number], input[type=date], input[type=password], textarea, select {
    display: block;
    width: 100%;
    padding: 9px 11px;
    margin-top: 6px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    color: var(--text);
    font-size: 0.98rem;
    font-family: inherit;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-tint);
}
textarea { resize: vertical; }

.field-invalid input:not([type=radio]):not([type=checkbox]),
.field-invalid select,
.field-invalid textarea,
.field-invalid .chip-group label,
.field-invalid .tooth-field {
    border-color: var(--danger) !important;
    box-shadow: 0 0 0 3px var(--danger-tint) !important;
}
.field-invalid .field-label { color: var(--danger); }

.field-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 20px; }
.field-half { grid-column: span 1; }
.field-full { grid-column: span 2; }
@media (max-width: 640px) {
    .field-grid { grid-template-columns: 1fr; }
    .field-full, .field-half { grid-column: span 1; }
}

.section-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px 6px;
    margin-bottom: 18px;
    box-shadow: var(--shadow);
}
.section-card h3 { margin: 0 0 14px; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--primary-dark); }

/* Chip-style choice control (used for short dropdown lists) */
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.chip-group input { position: absolute; opacity: 0; width: 0; height: 0; }
.chip-group label {
    display: inline-flex; align-items: center;
    padding: 7px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel-2);
    color: var(--text);
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.12s ease;
    width: auto;
    margin: 0;
}
.chip-group input:checked + label {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--primary-text);
}
.chip-group label:hover { border-color: var(--primary); }
.chip-group.multi input:checked + label { background: var(--accent); border-color: var(--accent); }

.checkbox-row { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; }
.checkbox-row input { width: auto; }

.form-footer {
    position: sticky;
    bottom: 0;
    background: linear-gradient(to top, var(--bg) 60%, transparent);
    padding: 18px 0 4px;
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.auth-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.auth-box {
    width: 100%;
    max-width: 380px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 32px 28px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}
.auth-box svg { margin-bottom: 6px; }
.auth-box h1 { font-size: 1.3rem; margin: 0 0 4px; }
.auth-box form { text-align: left; max-width: none; }
.auth-box button { width: 100%; justify-content: center; margin-top: 6px; }

table { border-collapse: collapse; width: 100%; margin: 12px 0; background: var(--panel); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.88rem; }
th { background: var(--panel-2); font-weight: 600; color: var(--muted); text-transform: uppercase; font-size: 0.72rem; letter-spacing: 0.04em; }
tr:last-child td { border-bottom: none; }
.field-table td.reorder { white-space: nowrap; }

.template-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 8px; margin: 12px 0; }
.template-item { display: flex; align-items: center; gap: 8px; padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 0.88rem; background: var(--panel); }
.template-item.already-added { opacity: 0.45; }

/* ---------- Tooth chart ---------- */
.tooth-field { background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-top: 6px; }
.tooth-grid { display: flex; flex-direction: column; gap: 10px; align-items: center; }
.tooth-arch { display: flex; align-items: flex-end; gap: 10px; }
.tooth-quad { display: flex; gap: 4px; }
.tooth-quad.mirror { flex-direction: row-reverse; }
.tooth-row { display: flex; gap: 10px; width: 100%; justify-content: center; }
.tooth-row-divider { width: 100%; border-bottom: 2px dashed var(--border); margin: 2px 0; }
.tooth-col-divider { width: 0; border-left: 2px dashed var(--border); margin: 0 6px; align-self: stretch; }
.tooth {
    width: 36px; height: 40px;
    border: 1.5px solid var(--border);
    border-radius: 10px 10px 6px 6px;
    background: var(--panel);
    color: var(--text);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}
.tooth:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--primary); }
.tooth-active { background: var(--primary); color: var(--primary-text); border-color: var(--primary-dark); }
.tooth-grade-0 { background: #f2b632; border-color: #d99a12; color: #1c2230; }
.tooth-grade-1 { background: #ef8a3d; border-color: #cf6c22; color: #1c2230; }
.tooth-grade-2 { background: #d64545; border-color: #b32e2e; color: #fff; }
.tooth-quadrant-label { font-size: 0.65rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin: 0 2px; }
.tooth-legend { margin-top: 12px; font-size: 0.8rem; color: var(--muted); display: flex; align-items: center; flex-wrap: wrap; gap: 5px; }
.legend-swatch { display: inline-block; width: 12px; height: 12px; border-radius: 4px; margin-right: 2px; vertical-align: middle; }

.records-toolbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }

/* ---- Nepal address picker (Province -> District -> Municipality) ---- */
.addr-field { margin-top: 6px; }
.addr-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}
@media (max-width: 700px) {
    .addr-grid { grid-template-columns: 1fr; }
}
.addr-col { display: flex; flex-direction: column; min-width: 0; }
.addr-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}
.addr-select { margin-top: 0 !important; width: 100%; }
.addr-select:disabled { background: var(--panel-2); color: var(--muted); cursor: not-allowed; }

/* ---- "+ Add option" control on dropdown / chip fields ---- */
.add-option-host { margin-top: 8px; }
.add-option-btn {
    background: none;
    border: 1px dashed var(--border);
    color: var(--primary);
    cursor: pointer;
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: inherit;
    line-height: 1.2;
}
.add-option-btn:hover { border-color: var(--primary); background: var(--primary-tint); }
.add-option-btn span { font-size: 1rem; font-weight: 700; }

.add-option-editor {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    padding: 10px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.add-option-input {
    margin-top: 0 !important;
    flex: 1 1 220px;
    min-width: 0;
}
.add-option-save, .add-option-cancel {
    padding: 7px 14px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border: 1px solid var(--border);
}
.add-option-save { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.add-option-save:hover { background: var(--primary-dark); }
.add-option-save:disabled, .add-option-cancel:disabled { opacity: 0.5; cursor: default; }
.add-option-cancel { background: var(--panel); color: var(--muted); }
.add-option-cancel:hover { color: var(--text); border-color: var(--muted); }
.add-option-msg { font-size: 0.8rem; color: var(--muted); flex-basis: 100%; }
.add-option-msg.is-error { color: var(--danger); }