/* ═════════════════════════════════════════════════════════════════════
   HAUI CREDIT COMPANION — DESIGN SYSTEM
   Style: Swiss International Typographic Style (International Style)
   Principles:
   - Asymmetric mathematical grid & structural hairline rules
   - Neo-grotesque sans-serif typography with high weight contrast
   - Stark monochrome baseline (Deep Carbon & Pure White)
   - Signature Swiss Signal Accent (Vermilion Red #e11d48)
   - Strict elimination of decorative fluff, bubble pills, and AI gradients
   - Rigorous mobile-first responsive architecture (320px - 1440px+)
   ═════════════════════════════════════════════════════════════════════ */

:root {
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Color Palette — Swiss Monochrome + Vermilion Accent */
  --ink:           #09090b; /* Carbon Black */
  --ink-soft:      #18181b; /* Soft Charcoal */
  --ink-muted:     #52525b; /* Neutral Gray */
  --ink-dim:       #71717a; /* Subtle Neutral */
  --ink-faint:     #a1a1aa; /* Hairline Gray */

  --paper:         #ffffff; /* Stark White */
  --canvas:        #fcfcfc; /* Architectural Off-White */
  --surface-subtle:#f4f4f5; /* Light Technical Surface */
  --surface-alt:   #ececee; /* Border Surface */

  --line:          #e4e4e7; /* Hairline Rule */
  --line-strong:   #09090b; /* High-contrast Structural Line */
  --line-subtle:   #f4f4f5;

  /* Signature Swiss Accent */
  --swiss-red:       #e11d48;
  --swiss-red-hover: #be123c;
  --swiss-red-light: #fff1f2;
  --swiss-red-border:#fecdd3;

  /* State Accents */
  --state-ok:        #15803d;
  --state-ok-bg:     #f0fdf4;
  --state-ok-border: #bbf7d0;

  --state-warn:      #b45309;
  --state-warn-bg:   #fffbeb;
  --state-warn-border:#fde68a;

  --state-err:       #dc2626;
  --state-err-bg:    #fef2f2;
  --state-err-border:#fecaca;

  /* Backward Compatibility Aliases */
  --text:          var(--ink);
  --text-muted:    var(--ink-muted);
  --text-light:    var(--ink-dim);
  --bg:            var(--canvas);
  --surface:       var(--paper);
  --border:        var(--line);
  --border-strong: var(--line-strong);
  --teal:          var(--ink);
  --teal-hover:    var(--ink-soft);
  --teal-light:    var(--surface-subtle);
  --teal-border:   var(--line);
  --success-light: var(--state-ok-bg);
  --success-text:  var(--state-ok);
  --success-border:var(--state-ok-border);
  --danger-light:  var(--state-err-bg);
  --danger-text:   var(--state-err);
  --danger-border: var(--state-err-border);

  /* Precise Architectural Radii (No 9999px bubble pills) */
  --radius-none:   0px;
  --radius-xs:     2px;
  --radius-sm:     3px;
  --radius-md:     4px;
  --radius-lg:     6px;

  /* Elevation (Crisp, zero fuzzy bloom) */
  --shadow-none:   none;
  --shadow-crisp:  0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-hard:   2px 2px 0px #09090b;
  --shadow-dialog: 0 20px 40px -10px rgba(9, 9, 11, 0.25);

  --transition:    all 0.12s ease-out;
}

/* ── 1. Global Reset & Base Typography ─────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--canvas);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  touch-action: manipulation;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

[hidden] {
  display: none !important;
}

/* ── 2. Top Header (Navigation Bar) ────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 58px;
  background: var(--paper);
  border-bottom: 2px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  background: var(--line-strong);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 900;
  border-radius: var(--radius-xs);
  line-height: 1;
}

.logo-text {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 0.92rem;
}

.logo-text b {
  font-weight: 900;
  letter-spacing: -0.03em;
}

.logo-text span {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Wallet Badge (Header Widget) */
.wallet-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px 5px 12px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xs);
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

.wallet-badge:hover {
  background: var(--surface-subtle);
  transform: translateY(-1px);
}

.wallet-badge-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}

.wallet-badge-val {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.btn-topup-mini {
  background: var(--swiss-red);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  border: none;
  transition: var(--transition);
}

.btn-topup-mini:hover {
  background: var(--swiss-red-hover);
}

/* Account Badge */
.acct-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

.acct-user-wrap {
  display: flex;
  flex-direction: column;
  text-align: right;
  line-height: 1.2;
}

.acct-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.acct-id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
}

/* ── 3. Swiss Buttons & Action Controls ─────────────────────── */
.btn-primary, .btn-ghost, .btn-subtle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding: 9px 16px;
  border-radius: var(--radius-xs);
  transition: var(--transition);
  text-transform: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--line-strong);
  color: #ffffff;
  border: 1px solid var(--line-strong);
}

.btn-primary:hover {
  background: #27272a;
  border-color: #27272a;
}

.btn-primary:active {
  transform: translateY(1px);
}

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

.btn-ghost:hover {
  background: var(--surface-subtle);
  border-color: var(--line-strong);
}

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

.btn-subtle:hover {
  background: #e4e4e7;
  color: var(--ink);
}

/* Nút Giới thiệu nhận thưởng nổi bật với icon hộp quà */
.btn-referral {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #ff2b56 0%, #ff5436 50%, #e11d48 100%);
  color: #ffffff !important;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding: 9px 18px 9px 24px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 14px rgba(225, 29, 72, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  overflow: visible;
  line-height: 1.2;
}

.btn-referral:hover {
  background: linear-gradient(135deg, #ff1744 0%, #ff416c 50%, #be123c 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(225, 29, 72, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  filter: brightness(1.06);
}

.btn-referral:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(225, 29, 72, 0.3);
}

.btn-referral-gift-badge {
  position: absolute;
  top: -14px;
  left: -14px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.35));
  pointer-events: none;
  animation: giftFloat 3.2s ease-in-out infinite;
  z-index: 3;
}

.gift-boxes-svg {
  display: block;
  overflow: visible;
}

@keyframes giftFloat {
  0%, 100% {
    transform: translateY(0) rotate(-3deg) scale(1);
  }
  50% {
    transform: translateY(-4px) rotate(4deg) scale(1.06);
  }
}

.btn-referral:hover .btn-referral-gift-badge {
  animation: giftHover 0.45s ease-in-out infinite alternate;
}

@keyframes giftHover {
  0% { transform: translateY(-3px) rotate(-8deg) scale(1.1); }
  100% { transform: translateY(-5px) rotate(8deg) scale(1.16); }
}

.btn-referral-text {
  position: relative;
  z-index: 1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.28);
  white-space: nowrap;
}

.btn-sm {
  font-size: 0.78rem;
  padding: 5px 10px;
}

/* ── 4. Typography & Labels ────────────────────────────────── */
.kicker, .badge-pill, .modal-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  background: var(--surface-subtle);
  border: 1px solid var(--line);
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  width: fit-content;
}

.modal-kicker {
  border: none;
  background: transparent;
  padding: 0;
  color: var(--swiss-red);
  margin-bottom: 2px;
}

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.muted {
  color: var(--ink-muted);
  font-size: 0.86rem;
}

/* Notification & Feedback Messages */
.msg {
  padding: 10px 14px;
  border-radius: var(--radius-xs);
  font-size: 0.84rem;
  line-height: 1.45;
  margin: 12px 0;
  border: 1px solid transparent;
  display: none;
}

.msg:not(:empty) {
  display: block;
}

.msg--ok, .msg:not(.error):not(.msg--err):not(:empty) {
  background: var(--state-ok-bg);
  border-color: var(--state-ok-border);
  color: var(--state-ok);
  font-weight: 500;
}

.msg--err, .msg.error {
  background: var(--state-err-bg);
  border-color: var(--state-err-border);
  color: var(--state-err);
  font-weight: 600;
}

/* ── 5. Form Elements ──────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="search"],
select,
textarea {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  color: var(--ink);
  font-size: 0.92rem;
  transition: var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--line-strong);
  outline-offset: -1px;
  border-color: var(--line-strong);
  background: #ffffff;
}

input::placeholder {
  color: var(--ink-dim);
}

select {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2309090b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 14px;
  padding-right: 36px;
}

/* ── 6. Login Page (Swiss Editorial Poster Layout) ─────────── */
.page-login {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 60px 24px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: start;
}

.login-intro {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.display-title, .login-intro h1 {
  font-size: 2.85rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--ink);
}

.display-title em, .login-intro h1 em {
  font-style: normal;
  color: var(--swiss-red);
}

.lead-text, .login-intro p {
  font-size: 1.05rem;
  color: var(--ink-muted);
  line-height: 1.55;
  max-width: 500px;
}

/* Feature List (01, 02, 03 Grid) */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 14px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.feature-item {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  align-items: baseline;
}

.feature-num, .feature-icon {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--swiss-red);
  letter-spacing: -0.02em;
}

.feature-item strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 2px;
}

.feature-item span {
  font-size: 0.84rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

/* Login Card */
.login-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xs);
  padding: 36px 32px;
  box-shadow: var(--shadow-hard);
}

.login-card h2 {
  font-size: 1.45rem;
  margin: 12px 0 6px;
}

.login-card .muted {
  margin-bottom: 24px;
  line-height: 1.4;
}

/* Privacy Notice Box */
.privacy-box {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.privacy-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink);
}

.privacy-tag {
  background: var(--line-strong);
  color: #fff;
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.65rem;
}

.privacy-summary {
  font-size: 0.8rem;
  color: var(--ink-muted);
  line-height: 1.45;
  margin-bottom: 10px;
}

.privacy-link, .privacy-link-subtle {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition);
}

.privacy-link:hover, .privacy-link-subtle:hover {
  color: var(--swiss-red);
}

/* ── 7. Dashboard Layout ───────────────────────────────────── */
.page-dashboard {
  flex: 1;
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 2px solid var(--line-strong);
  padding-bottom: 20px;
}

.page-heading h1 {
  font-size: 2rem;
  margin-top: 6px;
}

.heading-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Panels (Structured Architectural Boxes) */
.panel {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xs);
}

.panel-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--paper);
}

.panel-header h2 {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.panel-body {
  padding: 24px;
}

.meta-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-muted);
  background: var(--surface-subtle);
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
}

.meta-badge strong {
  color: var(--ink);
  font-weight: 800;
}

/* ── 8. Filter Row & Course Browser ────────────────────────── */
.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.filter-row input[type="search"] {
  flex: 1.2;
  min-width: 220px;
}

.filter-row select {
  flex: 1.8;
  min-width: 260px;
}

.filter-row button {
  flex-shrink: 0;
  height: 44px;
  padding: 0 20px;
}

/* Course Grid */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.course-card {
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: var(--radius-xs);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  transition: var(--transition);
}

.course-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hard);
  transform: translateY(-1px);
}

.course-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.3;
}

.course-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.course-meta code {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink);
  background: var(--surface-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  width: fit-content;
}

.slot-tag {
  display: inline-block;
  background: var(--surface-subtle);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  padding: 3px 8px;
  font-size: 0.74rem;
  font-family: var(--font-mono);
  color: var(--ink);
  margin: 2px 4px 2px 0;
}

/* ── 9. Weekly Timetable (Schedule Grid) ────────────────────── */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.sched-table, .schedule-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 860px;
  table-layout: fixed;
  font-size: 0.82rem;
}

.sched-table th, .schedule-table th {
  background: var(--surface-subtle);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
  padding: 12px 8px;
  border: 1px solid var(--line);
}

.sched-table th:first-child, .schedule-table th:first-child {
  width: 80px;
  background: #ebebeb;
}

.sched-table td, .schedule-table td {
  vertical-align: top;
  height: 120px;
  padding: 6px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.sched-table td.time-label, .sched-table td:first-child {
  text-align: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink);
  padding-top: 24px;
  background: var(--surface-subtle);
}

.slot-card, .slot-block {
  background: #ffffff;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--swiss-red);
  border-radius: var(--radius-xs);
  padding: 8px 10px;
  margin-bottom: 6px;
  line-height: 1.35;
  transition: var(--transition);
}

.slot-card:hover {
  background: var(--surface-subtle);
}

.slot-card strong, .slot-block strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 3px;
}

.slot-card .slot-meta, .slot-block span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.slot-card button {
  margin-top: 6px;
  font-size: 0.72rem;
  padding: 3px 8px;
  background: var(--state-err-bg);
  border: 1px solid var(--state-err-border);
  color: var(--state-err);
  border-radius: var(--radius-xs);
  font-weight: 700;
}

.slot-card button:hover {
  background: var(--state-err);
  color: #fff;
}

.empty-cell {
  display: block;
  text-align: center;
  color: #d4d4d8;
  font-size: 0.85rem;
  padding-top: 40px;
}

/* ── 10. Data Tables (Orders, Ledgers, History) ────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

th {
  background: var(--surface-subtle);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: left;
  padding: 10px 14px;
  border-bottom: 2px solid var(--line-strong);
}

td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  line-height: 1.4;
}

tr:hover td {
  background: var(--surface-subtle);
}

.placeholder {
  padding: 32px 16px;
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.88rem;
}

/* Status Pills */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--radius-xs);
  border: 1px solid var(--line);
  background: var(--surface-subtle);
  color: var(--ink);
}

.pill.success, .pill.paid {
  background: var(--state-ok-bg);
  color: var(--state-ok);
  border-color: var(--state-ok-border);
}

.pill.pending, .pill.creating, .pill.unknown {
  background: var(--state-warn-bg);
  color: var(--state-warn);
  border-color: var(--state-warn-border);
}

.pill.failed, .pill.cancelled, .pill.expired {
  background: var(--state-err-bg);
  color: var(--state-err);
  border-color: var(--state-err-border);
}

/* ── 11. Custom Dialogs & Modal Popups ─────────────────────── */
.custom-dialog, .privacy-dialog {
  border: none;
  background: transparent;
  padding: 0;
  width: 94%;
  margin: auto;
}

.custom-dialog.modal-sm { max-width: 440px; }
.custom-dialog.modal-lg { max-width: 680px; }
.custom-dialog.modal-xl { max-width: 960px; }
.custom-dialog.qr-dialog-modal { max-width: 440px; }

.custom-dialog::backdrop, .privacy-dialog::backdrop {
  background: rgba(9, 9, 11, 0.75);
  backdrop-filter: blur(2px);
}

.custom-dialog-card, .privacy-dialog-card {
  background: var(--paper);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius-xs);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: 90vh;
  box-shadow: var(--shadow-dialog);
}

.custom-dialog-header, .privacy-dialog-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--paper);
  gap: 12px;
}

.custom-dialog-body, .privacy-dialog-body {
  padding: 24px 20px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.modal-close-btn, .qr-close {
  width: 32px;
  height: 32px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  display: grid;
  place-items: center;
  border-radius: var(--radius-xs);
  transition: var(--transition);
}

.modal-close-btn:hover, .qr-close:hover {
  background: var(--line-strong);
  color: var(--paper);
}

/* Wallet Grid (4 Stat Cards) */
.wallet-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface-subtle);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-card span {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
}

.stat-card strong {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.stat-card.accent {
  background: var(--paper);
  border: 2px solid var(--line-strong);
}

.stat-card.accent strong {
  color: var(--swiss-red);
}

/* Topup Box */
.topup-box {
  background: var(--surface-subtle);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  padding: 20px;
  margin-bottom: 20px;
}

.topup-box h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.chip-group {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin: 14px 0;
}

.chip {
  padding: 8px 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink);
  text-align: center;
  transition: var(--transition);
}

.chip:hover {
  border-color: var(--line-strong);
}

.chip.active {
  background: var(--line-strong);
  color: #ffffff;
  border-color: var(--line-strong);
}

.topup-form-inline {
  display: flex;
  gap: 10px;
}

.topup-form-inline input {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
}

/* Topup History List */
.topup-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topup-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  gap: 12px;
}

.topup-item-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.topup-item-left strong {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
}

.topup-item-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* QR Code Modal Display */
.qr-overlay {
  padding: 16px;
}

.qr-card {
  background: var(--paper);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius-xs);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.qr-frame {
  padding: 12px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  display: inline-grid;
  place-items: center;
}

.qr-frame img {
  max-width: 240px;
  width: 100%;
  height: auto;
  display: block;
}

.pulse-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--line);
  background: var(--surface-subtle);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--swiss-red);
  animation: pulse-ring 1.4s ease-out infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.4; }
  100% { transform: scale(0.95); opacity: 1; }
}

/* Privacy & Legal Dialog specific */
.custom-dialog.legal-dialog-modal {
  max-width: 840px;
}

.legal-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px 12px;
}

.legal-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 20px;
  border-bottom: 2px solid var(--line-strong);
  background: var(--paper);
}

.legal-tab-btn {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
  background: var(--surface-subtle);
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: var(--radius-xs) var(--radius-xs) 0 0;
  white-space: nowrap;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  bottom: -1px;
}

.legal-tab-btn:hover {
  color: var(--ink);
  background: #ebebeb;
}

.legal-tab-btn.active {
  background: var(--line-strong);
  color: #ffffff;
  border-color: var(--line-strong);
}

.legal-tab-panel {
  padding: 4px 0;
}

.legal-tab-panel h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  color: var(--ink);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.legal-tab-panel h4 {
  font-size: 0.92rem;
  font-weight: 800;
  margin: 18px 0 6px;
  color: var(--ink);
}

.legal-tab-panel h4:first-of-type {
  margin-top: 0;
}

.legal-tab-panel p {
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--ink-muted);
  margin-bottom: 10px;
}

.legal-tab-panel ul {
  margin: 6px 0 14px 20px;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

.legal-tab-panel li {
  margin-bottom: 6px;
}

.legal-tab-panel strong {
  color: var(--ink);
}

.legal-dialog-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-subtle);
  gap: 12px;
}

/* Checkbox Terms Agreement */
.form-terms {
  margin: 14px 0 16px;
}

.terms-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--ink-muted);
  cursor: pointer;
  user-select: none;
}

.terms-checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--swiss-red);
  cursor: pointer;
}

.terms-checkbox-label a.legal-link {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition);
}

.terms-checkbox-label a.legal-link:hover {
  color: var(--swiss-red);
}

.footer-legal-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.78rem;
}

.legal-link-btn {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.78rem;
  color: var(--ink-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  transition: var(--transition);
}

.legal-link-btn:hover {
  color: var(--swiss-red);
}

.privacy-dialog-body h4 {
  font-size: 0.95rem;
  font-weight: 800;
  margin: 18px 0 6px;
}

.privacy-dialog-body h4:first-child { margin-top: 0; }

.privacy-dialog-body p {
  font-size: 0.88rem;
  color: var(--ink-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.privacy-dialog-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: flex-end;
  background: var(--surface-subtle);
}

/* ── 12. Footer ────────────────────────────────────────────── */
footer {
  margin-top: auto;
  border-top: 2px solid var(--line-strong);
  background: var(--paper);
  padding: 20px 24px;
  font-size: 0.78rem;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

footer strong {
  color: var(--ink);
  font-family: var(--font-mono);
}

/* ═════════════════════════════════════════════════════════════
   13. RESPONSIVE ARCHITECTURE (MOBILE OPTIMIZATION)
   Breakpoints: 860px (Tablet), 640px (Mobile), 420px (Compact)
   ═════════════════════════════════════════════════════════════ */

@media (max-width: 860px) {
  .page-login {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 20px;
  }

  .page-dashboard {
    padding: 24px 16px 48px;
  }

  .wallet-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .chip-group {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .header {
    height: 54px;
    padding: 0 14px;
  }

  .logo-text span {
    display: none;
  }

  .wallet-badge-label {
    display: none;
  }

  .acct-name {
    display: none;
  }

  .page-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-bottom: 16px;
  }

  .page-heading h1 {
    font-size: 1.65rem;
  }

  .heading-actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .heading-actions #refresh {
    grid-column: 1 / -1;
    width: 100%;
  }

  .heading-actions button {
    justify-content: center;
    padding: 10px 12px;
  }

  .panel-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 16px;
  }

  .panel-body {
    padding: 16px;
  }

  .filter-row {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-row input[type="search"],
  .filter-row select,
  .filter-row button {
    width: 100%;
    min-width: 0;
  }

  .course-grid {
    grid-template-columns: 1fr;
  }

  .course-card button {
    width: 100%;
    padding: 12px;
  }

  /* Schedule Sticky First Column for Smooth Swiping */
  .sched-table th:first-child,
  .sched-table td:first-child {
    position: sticky;
    left: 0;
    z-index: 2;
    box-shadow: 2px 0 0 rgba(0, 0, 0, 0.08);
  }

  .topup-form-inline {
    flex-direction: column;
  }

  .topup-form-inline input,
  .topup-form-inline button {
    width: 100%;
  }

  .wallet-grid {
    grid-template-columns: 1fr;
  }

  .stat-card strong {
    font-size: 1.25rem;
  }

  /* Mobile Bottom-sheet / Dialog */
  .custom-dialog, .privacy-dialog {
    width: 100%;
    max-width: 100% !important;
    margin: 0;
    bottom: 0;
    top: auto;
    position: fixed;
  }

  .custom-dialog-card, .privacy-dialog-card {
    border-radius: 8px 8px 0 0;
    border-bottom: none;
    max-height: 88vh;
  }

  .custom-dialog-header, .privacy-dialog-header {
    padding: 14px 16px;
  }

  .custom-dialog-body, .privacy-dialog-body {
    padding: 18px 16px 28px;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 14px;
    gap: 8px;
  }
}

@media (max-width: 380px) {
  .logo-text b {
    font-size: 0.85rem;
  }

  .wallet-badge {
    padding: 4px 6px;
    gap: 4px;
  }

  .wallet-badge-val {
    font-size: 0.8rem;
  }

  .btn-topup-mini {
    padding: 3px 6px;
    font-size: 0.68rem;
  }

  .chip-group {
    grid-template-columns: repeat(2, 1fr);
  }
}