/* ===========================================================================
   GuestLoop QR — Design system
   Apple-inspired: SF system fonts, generous whitespace, soft surfaces, subtle
   shadows, rounded corners, calm palette, fluid type.
   =========================================================================== */

:root {
  /* Palette — light */
  --bg:            #ffffff;
  --bg-elevated:   #ffffff;
  --bg-muted:      #f5f5f7;
  --bg-soft:       #fafafa;
  --line:          #d2d2d7;
  --line-soft:     #ececef;
  --ink:           #1d1d1f;
  --ink-muted:     #6e6e73;
  --ink-faint:     #86868b;
  --accent:        #0071e3;
  --accent-hover:  #0077ed;
  --accent-press:  #0066cc;
  --success:       #34c759;
  --warning:       #ff9f0a;
  --danger:        #ff3b30;
  --positive:      #30d158;
  --neutral:       #ffd60a;
  --negative:      #ff453a;
  --urgent:        #ff2d55;

  --radius-sm:     6px;
  --radius:        12px;
  --radius-lg:     18px;
  --radius-xl:     24px;

  --shadow-1:      0 1px 2px rgba(0,0,0,0.04), 0 1px 1px rgba(0,0,0,0.03);
  --shadow-2:      0 4px 14px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-3:      0 10px 30px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Helvetica Neue", "Segoe UI", Inter, Roboto, Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Menlo", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:            #000000;
    --bg-elevated:   #1c1c1e;
    --bg-muted:      #1c1c1e;
    --bg-soft:       #161618;
    --line:          #38383a;
    --line-soft:     #2a2a2c;
    --ink:           #f5f5f7;
    --ink-muted:     #a1a1a6;
    --ink-faint:     #6e6e73;
    --accent:        #2997ff;
    --accent-hover:  #44a3ff;
    --accent-press:  #1a8cff;
    --shadow-1:      0 1px 2px rgba(0,0,0,0.40);
    --shadow-2:      0 6px 20px rgba(0,0,0,0.50);
    --shadow-3:      0 14px 40px rgba(0,0,0,0.60);
  }
}

/* ----------------------------- reset -------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern", "liga", "ss01";
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.022em; line-height: 1.1; color: var(--ink); }
h1 { font-size: clamp(34px, 5vw, 56px); letter-spacing: -0.03em; }
h2 { font-size: clamp(26px, 3.5vw, 40px); letter-spacing: -0.024em; }
h3 { font-size: clamp(20px, 2.5vw, 26px); }
h4 { font-size: 18px; }
p { margin: 0 0 1em; color: var(--ink); }
small { color: var(--ink-muted); }
hr { border: 0; border-top: 1px solid var(--line-soft); margin: var(--space-8) 0; }
input, select, textarea { font: inherit; color: inherit; }

/* ----------------------------- layout ------------------------------------- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 var(--space-6); }
.container-sm { max-width: 720px; margin: 0 auto; padding: 0 var(--space-5); }
.container-xs { max-width: 480px; margin: 0 auto; padding: 0 var(--space-5); }

.stack > * + * { margin-top: var(--space-4); }
.stack-lg > * + * { margin-top: var(--space-6); }
.stack-xl > * + * { margin-top: var(--space-8); }

.row { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.row-center { display: flex; gap: var(--space-4); align-items: center; flex-wrap: wrap; }
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

/* ----------------------------- nav ---------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-soft);
}
@media (prefers-color-scheme: dark) {
  .nav { background: rgba(0, 0, 0, 0.68); }
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.nav-brand {
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 17px;
  color: var(--ink);
}
.nav-brand:hover { text-decoration: none; }
.nav-brand .dot { color: var(--accent); }
.nav-links { display: flex; gap: var(--space-5); align-items: center; }
.nav-links a {
  color: var(--ink-muted);
  font-size: 14px;
  font-weight: 500;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }

/* ----------------------------- buttons ------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  background: var(--bg-muted);
  color: var(--ink);
  transition: transform .04s ease, background .15s ease, color .15s ease, box-shadow .15s ease;
  user-select: none;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.985); }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover  { background: var(--accent-hover); }
.btn-primary:active { background: var(--accent-press); }
.btn-secondary {
  background: var(--bg-muted);
  color: var(--ink);
}
.btn-secondary:hover { background: var(--line-soft); }
.btn-ghost {
  background: transparent;
  color: var(--accent);
}
.btn-ghost:hover { background: rgba(0, 113, 227, 0.08); }
.btn-danger {
  background: rgba(255, 59, 48, 0.1);
  color: var(--danger);
}
.btn-danger:hover { background: rgba(255, 59, 48, 0.18); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 28px; font-size: 17px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-pill { border-radius: 980px; }

/* ----------------------------- cards -------------------------------------- */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-1);
}
.card-pad-lg { padding: var(--space-8); }
.card-elevated { box-shadow: var(--shadow-2); }
.card-soft { background: var(--bg-soft); border-color: var(--line-soft); }
.card-title { font-size: 20px; font-weight: 600; margin: 0 0 var(--space-2); letter-spacing: -0.018em; }
.card-sub   { color: var(--ink-muted); font-size: 14px; margin: 0; }

/* ----------------------------- forms -------------------------------------- */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--space-4); }
.form-label { font-size: 13px; font-weight: 500; color: var(--ink-muted); letter-spacing: 0.01em; }
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  transition: border-color .12s ease, box-shadow .12s ease;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.16);
}
.form-textarea { resize: vertical; min-height: 96px; line-height: 1.45; }
.form-help { color: var(--ink-faint); font-size: 13px; margin-top: 4px; }
.form-error { color: var(--danger); font-size: 13px; margin-top: 4px; }
.form-checkbox { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; }
.form-checkbox input[type=checkbox] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
  margin-top: 2px;
  display: inline-grid;
  place-content: center;
  transition: background .12s, border-color .12s;
  flex-shrink: 0;
}
.form-checkbox input[type=checkbox]:checked {
  background: var(--accent);
  border-color: var(--accent);
}
.form-checkbox input[type=checkbox]:checked::after {
  content: "";
  width: 10px;
  height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(1px, -1px);
}
.form-checkbox span { font-size: 14px; color: var(--ink); line-height: 1.45; }
.form-radio-group { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.form-radio {
  flex: 1 1 auto; min-width: 140px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  background: var(--bg);
  transition: border-color .12s, background .12s;
}
.form-radio:hover { border-color: var(--accent); }
.form-radio input { display: none; }
.form-radio-checked, .form-radio:has(input:checked) {
  border-color: var(--accent);
  background: rgba(0, 113, 227, 0.06);
}

/* ----------------------------- chips / tags ------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 980px;
  background: var(--bg-muted);
  color: var(--ink-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .12s, color .12s, border-color .12s;
}
.chip:hover { background: var(--line-soft); color: var(--ink); }
.chip-checked, .chip[aria-pressed="true"] {
  background: rgba(0, 113, 227, 0.12);
  color: var(--accent);
  border-color: rgba(0, 113, 227, 0.25);
}
.chip-positive { background: rgba(48, 209, 88, 0.12); color: #198754; }
.chip-neutral  { background: rgba(255, 214, 10, 0.18); color: #8a6d00; }
.chip-negative { background: rgba(255, 69, 58, 0.12);  color: #c0392b; }
.chip-urgent   { background: rgba(255, 45, 85, 0.18);  color: #b71540; font-weight: 600; }

/* ----------------------------- sentiment buttons -------------------------- */
.sentiment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
@media (min-width: 480px) {
  .sentiment-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
}
.sentiment-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 26px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: transform .08s ease, border-color .14s, box-shadow .14s, background .14s;
  width: 100%;
}
.sentiment-btn:hover { border-color: var(--ink-faint); box-shadow: var(--shadow-2); }
.sentiment-btn:active { transform: scale(.985); }
.sentiment-btn .emoji { font-size: 36px; line-height: 1; }
.sentiment-btn .label { font-weight: 600; letter-spacing: -0.01em; }
.sentiment-btn .sub   { font-size: 13px; color: var(--ink-muted); }
.sentiment-btn[data-kind="positive"]:hover { border-color: var(--positive); }
.sentiment-btn[data-kind="neutral"]:hover  { border-color: var(--neutral); }
.sentiment-btn[data-kind="negative"]:hover { border-color: var(--negative); }

/* ----------------------------- hero / marketing --------------------------- */
.hero {
  padding: var(--space-20) var(--space-6);
  text-align: center;
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(0,113,227,0.12) 0%, transparent 70%),
    var(--bg);
}
.hero h1 { letter-spacing: -0.04em; max-width: 14ch; margin: 0 auto; }
.hero p.lead { font-size: 21px; color: var(--ink-muted); margin: var(--space-5) auto var(--space-6); max-width: 56ch; }
.hero .cta-row { display: inline-flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; }
.section { padding: var(--space-20) 0; }
.section-tight { padding: var(--space-12) 0; }

/* ----------------------------- alerts ------------------------------------- */
.alert {
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 14px;
  border: 1px solid transparent;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.alert-info    { background: rgba(0, 113, 227, 0.06);  border-color: rgba(0, 113, 227, 0.18);  color: var(--accent); }
.alert-success { background: rgba(48, 209, 88, 0.08);  border-color: rgba(48, 209, 88, 0.22);  color: #1f7a3b; }
.alert-warn    { background: rgba(255, 159, 10, 0.08); border-color: rgba(255, 159, 10, 0.22); color: #a25e00; }
.alert-danger  { background: rgba(255, 59, 48, 0.06);  border-color: rgba(255, 59, 48, 0.22);  color: #b00020; }

/* ----------------------------- tables ------------------------------------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line-soft); }
table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.table th, .table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
}
.table th { font-weight: 500; color: var(--ink-muted); background: var(--bg-soft); font-size: 13px; letter-spacing: 0.02em; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--bg-soft); }

/* ----------------------------- compliance / disclaimers ------------------- */
.disclaimer {
  font-size: 13px;
  color: var(--ink-muted);
  border-left: 3px solid var(--line);
  padding: 8px 12px;
  background: var(--bg-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.5;
}

/* ----------------------------- KPI tiles ---------------------------------- */
.kpi { padding: var(--space-5); border-radius: var(--radius-lg); background: var(--bg-elevated); border: 1px solid var(--line-soft); }
.kpi-label { font-size: 13px; color: var(--ink-muted); margin-bottom: 4px; }
.kpi-value { font-size: 32px; font-weight: 600; letter-spacing: -0.025em; line-height: 1.1; }
.kpi-delta { font-size: 13px; margin-top: 4px; color: var(--ink-faint); }
.kpi-delta.up   { color: var(--success); }
.kpi-delta.down { color: var(--danger); }

/* ----------------------------- ticket board ------------------------------- */
.board { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.column { background: var(--bg-soft); border-radius: var(--radius); padding: var(--space-3); min-height: 240px; }
.column-head { font-size: 13px; font-weight: 600; color: var(--ink-muted); padding: 6px 8px 12px; letter-spacing: 0.02em; text-transform: uppercase; }
.ticket {
  background: var(--bg-elevated);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-1);
}
.ticket .ttl { font-weight: 600; font-size: 14px; }
.ticket .meta { font-size: 12px; color: var(--ink-muted); margin-top: 4px; }
.ticket-urgent { border-color: rgba(255, 45, 85, 0.4); }
.ticket-high   { border-color: rgba(255, 159, 10, 0.4); }

/* ----------------------------- QR canvas ---------------------------------- */
.qr-frame {
  background: #fff;
  padding: 28px;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-soft);
}
.qr-frame svg, .qr-frame canvas { display: block; }

/* ----------------------------- utility ------------------------------------ */
.muted { color: var(--ink-muted); }
.faint { color: var(--ink-faint); }
.center { text-align: center; }
.right { text-align: right; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.flex-1 { flex: 1; }
.hidden { display: none !important; }
.text-sm { font-size: 14px; }
.text-xs { font-size: 12px; }
.text-lg { font-size: 19px; }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.divider { height: 1px; background: var(--line-soft); margin: var(--space-6) 0; }

/* ----------------------------- footer ------------------------------------- */
.footer {
  padding: var(--space-12) var(--space-6) var(--space-8);
  background: var(--bg-soft);
  color: var(--ink-muted);
  font-size: 13px;
  margin-top: var(--space-16);
}
.footer .container { display: flex; flex-wrap: wrap; gap: var(--space-6); justify-content: space-between; }
.footer a { color: var(--ink-muted); }
.footer a:hover { color: var(--ink); text-decoration: none; }

/* ----------------------------- badges ------------------------------------- */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 980px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.badge-positive { background: rgba(48, 209, 88, 0.15); color: #168539; }
.badge-neutral  { background: rgba(255, 214, 10, 0.18); color: #8a6d00; }
.badge-negative { background: rgba(255, 69, 58, 0.15); color: #b00020; }
.badge-urgent   { background: rgba(255, 45, 85, 0.20); color: #b71540; }
.badge-status   { background: var(--bg-muted); color: var(--ink-muted); }

/* ----------------------------- guest layout vibe -------------------------- */
.guest-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #fafafa 0%, #ffffff 60%);
}
@media (prefers-color-scheme: dark) {
  .guest-page { background: linear-gradient(180deg, #0a0a0a 0%, #000 60%); }
}
.guest-main { flex: 1; padding: var(--space-8) var(--space-5); }
.guest-card {
  max-width: 520px;
  margin: 0 auto;
  background: var(--bg-elevated);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  box-shadow: var(--shadow-2);
  border: 1px solid var(--line-soft);
}
.guest-foot {
  text-align: center;
  padding: var(--space-6);
  font-size: 12px;
  color: var(--ink-faint);
}

/* ----------------------------- sidebar (admin) ---------------------------- */
.admin-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100dvh; }
@media (max-width: 800px) { .admin-shell { grid-template-columns: 1fr; } }
.sidebar { background: var(--bg-soft); border-right: 1px solid var(--line-soft); padding: var(--space-6) var(--space-4); }
.sidebar-brand { font-weight: 600; letter-spacing: -0.02em; margin-bottom: var(--space-6); display:flex; align-items:center; gap:8px; color: var(--ink); }
.sidebar-brand .dot { color: var(--accent); }
.sidebar-section { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); margin: var(--space-5) 0 var(--space-2); padding: 0 8px; }
.sidebar-link {
  display: flex; gap: 10px; padding: 8px 12px;
  border-radius: 8px; color: var(--ink-muted); font-size: 14px; font-weight: 500;
}
.sidebar-link:hover { background: var(--line-soft); color: var(--ink); text-decoration: none; }
.sidebar-link.active { background: var(--accent); color: #fff; }
.admin-main { padding: var(--space-8); max-width: 1280px; }
.page-title { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-6); }
.page-title h1 { font-size: 28px; letter-spacing: -0.02em; }

/* ----------------------------- focus ring (a11y) -------------------------- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* ----------------------------- print -------------------------------------- */
@media print {
  .nav, .footer, .sidebar, .btn, .no-print { display: none !important; }
  body { background: #fff; color: #000; }
  .qr-frame { box-shadow: none; border: none; padding: 0; }
}