:root {
    --bg: #11161a;
    --surface: #182027;
    --surface-2: #212b33;
    --border: #2d3942;
    --text: #e8edf0;
    --text-dim: #93a5ad;
    --accent: #2dd4bf;
    --accent-hover: #22b8a5;
    --accent-glow: rgba(45, 212, 191, 0.18);
    --warning: #e0a030;
    --danger: #e15a5a;
    --success: #4fb477;
    --error: #e15a5a;
    --purple: #a07de0;
    --info: #5b8def;
    --radius: 10px;
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background:
        radial-gradient(900px 500px at 10% -10%, var(--accent-glow), transparent),
        var(--bg);
    color: var(--text);
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s ease; }
a:hover { text-decoration: underline; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.75rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 10;
}

.brand {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    background: linear-gradient(90deg, var(--text) 40%, var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.topnav { display: flex; align-items: center; gap: 1.25rem; }

.page {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

h1 { letter-spacing: -0.01em; }

.flash-list { margin-bottom: 1.5rem; }
.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}
.flash-error { background: rgba(225, 90, 90, 0.15); color: var(--error); border: 1px solid rgba(225, 90, 90, 0.3); }
.flash-success { background: rgba(79, 180, 119, 0.15); color: var(--success); border: 1px solid rgba(79, 180, 119, 0.3); }

.auth-card {
    max-width: 380px;
    margin: 3rem auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.auth-card h1 { margin-top: 0; text-align: center; }

form label {
    display: block;
    margin: 1rem 0 0.35rem;
    font-size: 0.9rem;
    color: var(--text-dim);
}

form input[type="text"],
form input[type="password"],
form input[type="tel"],
form input[type="email"],
form input[type="url"],
form textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
}
form textarea { resize: vertical; min-height: 4.5rem; }

form input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

button, .button {
    display: inline-block;
    background: var(--accent);
    color: #06201b;
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.1rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 1.25rem;
    transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}
button:hover, .button:hover {
    background: var(--accent-hover);
    text-decoration: none;
    box-shadow: 0 2px 10px var(--accent-glow);
}
button:active, .button:active { transform: translateY(1px); }

.inline-form { display: inline; margin: 0; }
.link-button {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: 0;
    margin: 0;
    font-size: 0.95rem;
    text-decoration: underline;
}
.link-button.danger { color: var(--danger); }

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--text);
    margin: 0.5rem 0;
}
.checkbox-label input { width: auto; }

fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-top: 1.25rem;
    padding: 0.75rem 1rem 1rem;
}
legend { color: var(--text-dim); padding: 0 0.5rem; }
.hint { color: var(--text-dim); font-size: 0.85rem; margin: 0.5rem 0 0; }

.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}
.tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    text-align: center;
    height: 130px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.tile-icon { font-size: 1.9rem; line-height: 1; }
.tile:hover {
    border-color: var(--accent);
    text-decoration: none;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 1rem 1.1rem;
}
.stat-card.stat-accepted { border-top-color: var(--success); }
.stat-card.stat-rejected { border-top-color: var(--danger); }
.stat-card.stat-expired { border-top-color: var(--warning); }
.stat-value { font-size: 1.6rem; font-weight: 800; letter-spacing: -0.02em; }
.stat-label { font-size: 0.8rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; margin-top: 0.15rem; }

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    background: var(--surface-2);
    color: var(--text-dim);
    border: 1px solid var(--border);
}
.badge-accent { background: var(--accent-glow); color: var(--accent); border-color: transparent; }
.badge-success { background: rgba(79, 180, 119, 0.15); color: var(--success); border-color: transparent; }
.badge-warning { background: rgba(224, 160, 48, 0.15); color: var(--warning); border-color: transparent; }
.badge-danger { background: rgba(225, 90, 90, 0.15); color: var(--danger); border-color: transparent; }
.badge-purple { background: rgba(160, 125, 224, 0.15); color: var(--purple); border-color: transparent; }
.badge-info { background: rgba(91, 141, 239, 0.15); color: var(--info); border-color: transparent; }

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.data-table th, .data-table td {
    text-align: left;
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}
.data-table th { color: var(--text-dim); font-weight: 600; }
.data-table tbody tr { transition: background 0.1s ease; }
.data-table tbody tr:hover { background: var(--surface-2); }
.data-table tbody tr:last-child td { border-bottom: none; }
.row-actions { display: flex; gap: 0.75rem; }

.note {
    padding: 0.65rem 1rem;
    border: 1px solid var(--border);
    border-left: 3px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
}
.note-information { border-left-color: var(--accent); }
.note-caution { border-left-color: var(--warning); }
.note-critical { border-left-color: var(--danger); }
.note-body { margin: 0.15rem 0; }

.totals-card {
    max-width: 340px;
    margin-left: auto;
    margin-top: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow);
}
.totals-row {
    display: flex;
    justify-content: space-between;
    padding: 0.35rem 0;
    font-size: 0.95rem;
    color: var(--text-dim);
}
.totals-row.totals-grand {
    border-top: 1px solid var(--border);
    margin-top: 0.4rem;
    padding-top: 0.6rem;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text);
}

/* Survey page - touch-friendly, no JS (native <details>/<summary> for
   expand/collapse so it works reliably on a phone with no scripting). */
.survey-group {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
}
.survey-group summary {
    padding: 1rem 1.1rem;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 44px;
}
.survey-group summary::-webkit-details-marker { display: none; }
.survey-group summary::after { content: "+"; color: var(--accent); font-size: 1.3rem; }
.survey-group[open] summary::after { content: "\2212"; }
.survey-group summary .count-badge {
    margin-left: auto;
    margin-right: 0.75rem;
}
.survey-group-body { padding: 0 1.1rem 1.1rem; border-top: 1px solid var(--border); }

.survey-item-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.survey-item-row:last-child { border-bottom: none; }
.survey-item-name { flex: 1 1 200px; font-weight: 600; min-width: 160px; }
.survey-item-price { color: var(--text-dim); font-size: 0.85rem; flex-basis: 100%; }
.survey-item-row input[type="number"] {
    width: 90px;
    padding: 0.6rem 0.6rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 1.05rem;
    min-height: 44px;
}

.info-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 0.85rem 1.1rem;
    margin-bottom: 0.75rem;
}
.info-box h3 { margin: 0 0 0.5rem; font-size: 0.95rem; }
.info-box ul { margin: 0; padding-left: 1.2rem; }
.info-box.info-consider { border-left-color: var(--warning); }
.info-box.info-tools { border-left-color: var(--purple); }

@media (max-width: 480px) {
    .page { padding: 1.25rem 1rem 3rem; }
    .survey-item-row { gap: 0.5rem; }
    .survey-item-row input[type="number"] { width: 100%; }
}

/* A collapsible section whose summary reads as a primary action button
   (e.g. "+ Add Item") rather than a plain accordion header. */
.toggle-section { margin-bottom: 1rem; }
.toggle-section > summary {
    display: inline-block;
    list-style: none;
    background: var(--accent);
    color: #06201b;
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.1rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}
.toggle-section > summary::-webkit-details-marker { display: none; }
.toggle-section > summary:hover { background: var(--accent-hover); }
.toggle-section[open] > summary { margin-bottom: 1rem; }
.toggle-section-body {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
}

.lookup-row {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    flex-wrap: wrap;
    padding-bottom: 1.25rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}
.lookup-row > div { flex: 1 1 320px; }
.lookup-row label { display: block; margin: 0 0 0.35rem; font-size: 0.9rem; color: var(--text-dim); }
.lookup-row button { margin-top: 0; white-space: nowrap; }

.bulk-table { width: 100%; border-collapse: collapse; }
.bulk-table th { text-align: left; padding: 0.4rem 0.4rem; font-size: 0.8rem; color: var(--text-dim); font-weight: 600; }
.bulk-table td { padding: 0.3rem 0.4rem; vertical-align: top; }
.bulk-table input, .bulk-table select {
    width: 100%;
    padding: 0.45rem 0.5rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.9rem;
}
.bulk-table input[type="number"] { min-width: 70px; }