/* ============================================================
   Lina Benefits — Design System
   Inspirado em wallets digitais modernas (Apple Wallet, Revolut),
   com a sobriedade de marcas institucionais de turismo e hospitalidade.
   ============================================================ */

:root {
  /* Paleta */
  --color-bg: #faf8f4;
  --color-bg-elevated: #ffffff;
  --color-ink: #14110f;
  --color-ink-soft: #5b554d;
  --color-ink-mute: #8c8478;
  --color-line: #ece7df;
  --color-accent: #1f3a2e;          /* verde profundo, café-vegetação */
  --color-accent-soft: #2c5240;
  --color-gold: #b08740;             /* dourado Girondino */
  --color-gold-dark: #8b6f1e;        /* dourado mais escuro */
  --color-success: #1f6b46;
  --color-warning: #b3700a;
  --color-danger: #a3322c;

  /* Tipografia — Lina com Ubuntu */
  --font-display: "Ubuntu", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-serif: "Cormorant Garamond", "Garamond", "EB Garamond", Georgia, serif;
  --font-sans: "Ubuntu", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  /* Espaçamento */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 28px;

  /* Sombras */
  --shadow-sm: 0 1px 2px rgba(20, 17, 15, 0.04), 0 1px 1px rgba(20, 17, 15, 0.03);
  --shadow-md: 0 6px 24px rgba(20, 17, 15, 0.07), 0 2px 6px rgba(20, 17, 15, 0.04);
  --shadow-lg: 0 22px 60px rgba(20, 17, 15, 0.12), 0 6px 16px rgba(20, 17, 15, 0.06);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(1200px 600px at 50% -10%, #f1ebdf 0%, transparent 60%),
    var(--color-bg);
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

/* ----------------- Layout ----------------- */

.app-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 28px 22px 60px;
  flex: 1;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  text-align: center;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-soft) 100%);
  color: #f4ead4;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.2px;
  box-shadow: 0 4px 12px rgba(31, 58, 46, 0.15);
  border: 2px solid rgba(176, 135, 64, 0.2);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--color-ink);
}

.brand-tag {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-ink-mute);
}

/* ----------------- Card ----------------- */

.card {
  width: 100%;
  background: var(--color-bg-elevated);
  border-radius: var(--r-xl);
  padding: 28px 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-gold);
}

.card h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  line-height: 1.2;
  margin: 0 0 8px;
  letter-spacing: -0.4px;
}

.card .lead {
  margin: 0 0 22px;
  color: var(--color-ink-soft);
  font-size: 15px;
}

/* ----------------- Form ----------------- */

.form-field {
  display: block;
  margin-bottom: 18px;
}

.form-field label {
  display: block;
  font-size: 12px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--color-ink-mute);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-field input {
  width: 100%;
  height: 52px;
  border-radius: var(--r-md);
  border: 1px solid var(--color-line);
  background: #fffdf8;
  padding: 0 16px;
  font-size: 16px;
  color: var(--color-ink);
  transition: border-color 120ms, box-shadow 120ms;
}

.form-field input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(31, 58, 46, 0.12);
}

.form-field .hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-ink-mute);
}

.form-error {
  background: #fbe9e6;
  color: var(--color-danger);
  border-radius: var(--r-md);
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 14px;
}

.form-success {
  background: #e7f1ec;
  color: var(--color-success);
  border-radius: var(--r-md);
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 14px;
}

/* ----------------- Buttons ----------------- */

.btn {
  width: 100%;
  height: 54px;
  border: 0;
  border-radius: var(--r-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 80ms, opacity 120ms, background 120ms;
}

.btn-primary {
  background: var(--color-accent);
  color: #f4ead4;
}

.btn-primary:hover {
  background: var(--color-accent-soft);
}

.btn-primary:active {
  transform: scale(0.99);
}

.btn-primary[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

.btn-ghost:hover {
  background: #f6f1e7;
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

/* ----------------- Voucher Card ----------------- */

.voucher {
  width: 100%;
  background: linear-gradient(180deg, #ffffff 0%, #fdf8ee 100%);
  border-radius: var(--r-xl);
  padding: 28px 24px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-line);
  position: relative;
  overflow: hidden;
}

.voucher::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-gold) 100%);
}

.voucher-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 18px;
  padding-top: 6px;
}

.voucher-eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-ink-mute);
}

.voucher-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.15;
  margin: 0;
}

.voucher-partner {
  font-size: 14px;
  color: var(--color-ink-soft);
}

.voucher-name {
  margin: 18px 0 6px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: var(--color-ink-mute);
}

.voucher-name strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.3px;
  color: var(--color-ink);
  text-transform: none;
  margin-top: 4px;
  font-weight: 500;
}

.qr-frame {
  margin: 22px auto;
  width: 240px;
  height: 240px;
  background: #fff;
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-line);
  padding: 14px;
}

.qr-frame canvas, .qr-frame img {
  width: 100% !important;
  height: 100% !important;
}

.voucher-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 18px;
  border-top: 1px dashed var(--color-line);
  padding-top: 18px;
  margin-top: 6px;
}

.voucher-meta .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: var(--color-ink-mute);
}

.voucher-meta .value {
  font-size: 15px;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 600;
}

.status-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.status-pill.is-active   { background: #e7f1ec; color: var(--color-success); }
.status-pill.is-redeemed { background: #f1efe7; color: var(--color-ink-mute); }
.status-pill.is-expired  { background: #fbe9e6; color: var(--color-danger); }

.voucher-terms {
  font-size: 12px;
  color: var(--color-ink-mute);
  line-height: 1.5;
  margin-top: 18px;
  border-top: 1px solid var(--color-line);
  padding-top: 16px;
}

/* ----------------- Admin / Scanner ----------------- */

.scanner-wrapper {
  width: 100%;
  background: #000;
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  position: relative;
}

#qr-reader {
  width: 100%;
}

#qr-reader video {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover;
  display: block;
}

.admin-toolbar {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.admin-toolbar .btn {
  height: 48px;
  font-size: 14px;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 18px;
}

.admin-stat {
  background: var(--color-bg-elevated);
  border-radius: var(--r-md);
  padding: 12px 10px;
  border: 1px solid var(--color-line);
  text-align: center;
}

.admin-stat .v {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
}

.admin-stat .l {
  font-size: 10px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--color-ink-mute);
  margin-top: 2px;
}

/* Modal de validação */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 17, 15, 0.55);
  display: none;
  align-items: flex-end;
  justify-content: center;
  padding: 18px;
  z-index: 50;
}

.modal-backdrop.is-open {
  display: flex;
}

.modal {
  width: 100%;
  max-width: 460px;
  background: var(--color-bg-elevated);
  border-radius: var(--r-xl);
  padding: 24px 22px 22px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 200ms ease-out;
}

@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 6px;
  letter-spacing: -0.3px;
}

.modal .modal-status {
  display: inline-flex;
  margin-bottom: 14px;
}

.modal .modal-detail {
  background: #faf5ea;
  border-radius: var(--r-md);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--color-ink-soft);
  margin: 12px 0 16px;
}

.modal-buttons {
  display: flex;
  gap: 10px;
}

.modal-buttons .btn { height: 48px; }

/* ----------------- Estados auxiliares ----------------- */

.center-block {
  text-align: center;
}

.muted {
  color: var(--color-ink-mute);
}

.spinner {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  animation: spin 700ms linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

footer.app-footer {
  margin-top: auto;
  padding: 24px;
  text-align: center;
  font-size: 11px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--color-ink-mute);
}

/* ----------------- Mobile-first refinements ----------------- */

@media (min-width: 480px) {
  .app-shell { padding: 48px 24px 80px; }
  .card { padding: 36px 32px; }
  .voucher { padding: 32px 30px; }
}