/* reset + typography + shell chrome + auth screens */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: 'Sarabun', 'Noto Sans Thai UI', 'Leelawadee UI', 'Segoe UI', Tahoma, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
.tabular { font-variant-numeric: tabular-nums; }
.hidden { display: none !important; }

button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--ink);
    padding: 8px 14px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 13.5px;
    transition: background 0.12s ease, border-color 0.12s ease, filter 0.12s ease;
}
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: 0.55; cursor: default; }
.btn-primary { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.06); background: var(--accent); }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-ghost:hover { background: var(--surface-2); }
.btn-block { width: 100%; justify-content: center; padding: 11px 14px; margin-top: 6px; }

/* ---------- app shell / topbar ---------- */
.app { min-height: 100%; display: flex; flex-direction: column; }
.topbar {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 14px 22px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}
.brand { display: flex; align-items: baseline; gap: 8px; font-weight: 700; font-size: 17px; white-space: nowrap; }
.brand .brand-sub { font-weight: 400; font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.02em; }

.searchbox {
    flex: 1;
    max-width: 420px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px 12px;
}
.searchbox svg { flex: none; opacity: 0.55; }
.searchbox input { border: none; background: transparent; outline: none; width: 100%; color: var(--ink); }
.searchbox input::placeholder { color: var(--ink-faint); }
.topbar-spacer { flex: 1; }

.user-chip { display: flex; align-items: center; gap: 8px; padding-left: 14px; border-left: 1px solid var(--line); }
.avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: var(--accent-soft); color: var(--accent);
    border: 1px solid var(--accent-soft-line);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 12.5px; flex: none;
}
.user-chip .who { font-size: 13px; display: flex; flex-direction: column; }
.user-chip .who .role { color: var(--ink-faint); font-size: 11.5px; }

/* ---------- auth screens ---------- */
.auth-screen { min-height: 100%; display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card {
    width: 100%; max-width: 380px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow-2);
    padding: 30px 28px;
}
.auth-brand { display: flex; flex-direction: column; gap: 2px; font-weight: 700; font-size: 22px; margin-bottom: 4px; }
.auth-brand span { font-weight: 400; font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.02em; }
.auth-lead { color: var(--ink-muted); font-size: 13.5px; margin: 0 0 18px; }
.auth-input {
    width: 100%;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    border-radius: 8px;
    padding: 10px 12px;
    outline: none;
    margin-bottom: 12px;
}
.auth-input:focus { border-color: var(--accent); }
.auth-error { color: var(--danger); font-size: 13px; margin: 2px 0 10px; display: none; }
.auth-switch { text-align: center; font-size: 13px; color: var(--ink-muted); margin: 16px 0 0; }
.auth-switch a { color: var(--accent); text-decoration: none; font-weight: 600; }
.auth-switch a:hover { text-decoration: underline; }

.field-label {
    display: block;
    font-size: 11.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
    color: var(--ink-faint); margin: 0 0 6px;
}

.pending-badge {
    display: inline-block;
    margin: 0 auto 14px;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 12.5px; font-weight: 700; letter-spacing: 0.02em;
    color: var(--st-queue);
    background: var(--st-queue-bg);
    border: 1px solid var(--st-queue-line);
}