* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #ffffff;
  --card: #ffffff;
  --text: #000000;
  --text-muted: #999999;
  --border: rgba(0, 0, 0, 0.12);
  --border-hover: rgba(0, 0, 0, 0.35);
  --success: #059669;
  --error: #dc2626;
  --radius: 4px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.08);
}

body {
  font-family: 'Inknut Antiqua', Georgia, 'Times New Roman', serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  letter-spacing: 0.03em;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
}

/* Steps */
.step { display: none; }
.step.active { display: block; }

/* Domain Card (Step 1) */
.domain-card {
  background: var(--card);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
}

.domain-card h3 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.domain-card p {
  color: var(--text-muted);
  font-size: 0.65rem;
  margin-bottom: 1.5rem;
}

.domain-input-group {
  display: flex;
  gap: 0.5rem;
  max-width: 400px;
  margin: 0 auto;
}

.domain-input-group input {
  flex: 1;
}

/* Survey Header */
.survey-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.survey-header h3 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.survey-domain {
  color: var(--text-muted);
  font-size: 0.65rem;
}

/* Question Cards */
.question-card {
  background: var(--card);
  border: none;
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.question-card h4 {
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* Rating Buttons */
.rating-buttons {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.rating-btn {
  flex: 1;
  padding: 0.5rem 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.7rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text);
}

.rating-btn:hover {
  border-color: var(--border-hover);
}

.rating-btn.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* Inputs & Textareas */
input[type="text"],
input[type="number"],
input[type="password"],
input[type="date"],
textarea {
  width: 100%;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.7rem;
  font-family: inherit;
  letter-spacing: 0.03em;
  background: white;
  color: var(--text);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--border-hover);
}

textarea {
  resize: vertical;
  min-height: 70px;
}

/* Buttons */
.btn-primary {
  padding: 0.6rem 1.4rem;
  background: var(--text);
  color: var(--bg);
  border: 1px solid var(--text);
  border-radius: var(--radius);
  font-size: 0.7rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background: #333;
  border-color: #333;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  padding: 0.5rem 1.2rem;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.65rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  border-color: var(--border-hover);
}

.submit-wrap {
  text-align: center;
  margin-top: 0.5rem;
}

/* Coupon Card (Step 3) */
.coupon-card {
  background: var(--card);
  border: 1.5px solid var(--text);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
}

.coupon-discount {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 0.75rem;
}

.coupon-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.coupon-code {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  font-family: ui-monospace, 'Cascadia Code', 'Fira Code', monospace;
  margin-bottom: 0.5rem;
}

.coupon-instructions {
  font-size: 0.6rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
}

/* Verify Card */
.verify-card {
  background: var(--card);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
}

.verify-card h3 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.verify-card > p {
  color: var(--text-muted);
  font-size: 0.65rem;
  margin-bottom: 1.5rem;
}

.verify-input-group {
  display: flex;
  gap: 0.5rem;
  max-width: 360px;
  margin: 0 auto 1.5rem;
}

.verify-input-group input {
  flex: 1;
  text-transform: uppercase;
  font-family: ui-monospace, 'Cascadia Code', 'Fira Code', monospace;
  letter-spacing: 0.08em;
}

.verify-result {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 360px;
  margin: 0 auto;
}

.verify-result .result-status {
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.verify-result .result-detail {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.verify-valid { border-color: var(--success); }
.verify-valid .result-status { color: var(--success); }

.verify-used,
.verify-invalid { border-color: var(--error); }
.verify-used .result-status,
.verify-invalid .result-status { color: var(--error); }

/* Admin */
.auth-card {
  background: var(--card);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
}

.auth-card h3 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.auth-input-group {
  display: flex;
  gap: 0.5rem;
  max-width: 360px;
  margin: 0 auto;
}

.auth-input-group input {
  flex: 1;
}

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

.admin-header h3 {
  font-size: 0.85rem;
  font-weight: 600;
}

/* Tabs */
.tab-bar {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.tab-btn {
  padding: 0.4rem 0.8rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.65rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.05em;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--text);
  border-color: var(--border);
  background: var(--card);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Add client form */
.add-client-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.add-client-form input {
  flex: 1;
}

/* Tables */
.admin-table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.6rem;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

td {
  color: var(--text);
}

.btn-redeem {
  padding: 0.25rem 0.6rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.55rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text);
}

.btn-redeem:hover {
  border-color: var(--border-hover);
}

.badge-used {
  color: var(--text-muted);
  font-size: 0.55rem;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.65rem;
  padding: 2rem 1rem;
}

/* Survey detail (admin) */
.survey-comments {
  display: none;
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: #fafafa;
  border-radius: var(--radius);
  font-size: 0.55rem;
  color: var(--text-muted);
}

.survey-comments.show { display: block; }

.btn-toggle-comments {
  background: none;
  border: none;
  font-size: 0.55rem;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  text-decoration: underline;
}

/* Notifications */
.notification {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.65rem 1rem;
  box-shadow: var(--shadow-hover);
  max-width: 360px;
  font-size: 0.65rem;
  font-family: inherit;
  letter-spacing: 0.03em;
  opacity: 0;
  transform: translateY(0.5rem);
  transition: all 0.3s ease;
  z-index: 1000;
}

.notification.show {
  opacity: 1;
  transform: translateY(0);
}

.notification-success { border-left: 3px solid var(--success); }
.notification-error { border-left: 3px solid var(--error); }
.notification-info { border-left: 3px solid var(--text); }

/* Language Selector */
.lang-selector {
  display: flex;
  justify-content: flex-end;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.lang-btn {
  padding: 0.2rem 0.5rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0;
  font-size: 0.55rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.05em;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.lang-btn:hover {
  color: var(--text);
}

.lang-btn.active {
  color: var(--text);
}

/* Branding */
.branding-badge {
  margin: 3rem 0 2rem;
  text-align: center;
  font-size: 0.65rem;
}

.branding-badge a {
  color: var(--text-muted);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
  letter-spacing: 0.05em;
}

.branding-badge a:hover {
  color: var(--text);
}

/* Responsive */
@media (max-width: 768px) {
  body { padding: 1rem 0.75rem; }

  .domain-card,
  .verify-card,
  .auth-card { padding: 2rem 1rem; }

  .domain-input-group,
  .verify-input-group,
  .auth-input-group,
  .add-client-form {
    flex-direction: column;
  }

  .rating-buttons {
    flex-wrap: wrap;
  }

  .rating-btn {
    min-width: calc(33% - 0.3rem);
  }

  .notification {
    right: 1rem;
    left: 1rem;
    max-width: none;
  }
}

@media (max-width: 640px) {
  .branding-badge { margin: 2rem 0 1.5rem; }
}