/* ClassVTU — shared UI (auth, dashboard, services) */
:root {
  --vtu-bg: #0f1419;
  --vtu-card: #1a2332;
  --vtu-card-inner: #161f2d;
  --vtu-muted: #8b9cb3;
  --vtu-text: #e8eef4;
  --vtu-accent: #3b82f6;
  --vtu-accent-dim: #2563eb;
  --vtu-success: #10b981;
  --vtu-danger: #f87171;
  --vtu-warn: #fbbf24;
  --vtu-border: #243044;
  --vtu-border-soft: #2d3a4d;
  --vtu-radius: 14px;
  --vtu-font: "DM Sans", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body.vtu-app {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--vtu-font);
  background: var(--vtu-bg);
  color: var(--vtu-text);
  background-image: radial-gradient(
    ellipse 80% 50% at 50% -20%,
    rgba(59, 130, 246, 0.15),
    transparent
  );
  line-height: 1.5;
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
}

.vtu-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: calc(2rem + env(safe-area-inset-top, 0px)) 1.25rem calc(2rem + env(safe-area-inset-bottom, 0px));
}

.vtu-wrap--narrow {
  max-width: 440px;
}

.vtu-wrap--medium {
  max-width: 520px;
}

/* —— Auth shell (matches min-h-screen flex center + safe-area top) —— */
.vtu-auth {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(1.5rem + env(safe-area-inset-top, 0px)) max(1rem, env(safe-area-inset-right, 0px))
    calc(1.5rem + env(safe-area-inset-bottom, 0px)) max(1rem, env(safe-area-inset-left, 0px));
}

.vtu-auth__card {
  width: 100%;
  max-width: 420px;
  background: var(--vtu-card);
  border: 1px solid var(--vtu-border);
  border-radius: var(--vtu-radius);
  padding: 1.75rem 1.5rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

.vtu-auth__brand {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vtu-accent);
  margin: 0 0 0.35rem;
}

.vtu-auth__title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  letter-spacing: -0.02em;
}

.vtu-auth__sub {
  color: var(--vtu-muted);
  font-size: 0.9rem;
  margin: 0 0 1.25rem;
}

.vtu-auth__sub strong {
  color: var(--vtu-text);
  word-break: break-all;
}

.vtu-brand-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 0 0 24px;
}

.vtu-brand-header__logo {
  height: 72px;
  width: auto;
  display: block;
}

.vtu-brand-header__text {
  margin: 0;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #d8e4ff;
  line-height: 1;
}

@media (max-width: 480px) {
  .vtu-brand-header__logo {
    height: 56px;
  }

  .vtu-brand-header__text {
    font-size: 26px;
    letter-spacing: 0.07em;
  }
}

/* —— Top bar (subpages) —— */
.vtu-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.vtu-back {
  color: var(--vtu-muted);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--vtu-border-soft);
  border-radius: 8px;
  transition: color 0.15s, border-color 0.15s;
}

.vtu-back:hover {
  color: var(--vtu-text);
  border-color: var(--vtu-muted);
}

.vtu-page-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}

.vtu-page-desc {
  color: var(--vtu-muted);
  font-size: 0.875rem;
  margin: 0.35rem 0 0;
}

/* —— Forms —— */
.vtu-field {
  margin-bottom: 1rem;
}

.vtu-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--vtu-muted);
  margin-bottom: 0.35rem;
}

.vtu-input,
.vtu-select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--vtu-border-soft);
  background: var(--vtu-card-inner);
  color: var(--vtu-text);
  font-family: inherit;
  font-size: 1rem;
}

.vtu-input:focus,
.vtu-select:focus {
  outline: none;
  border-color: var(--vtu-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.vtu-input::placeholder {
  color: #5c6d82;
}

/* —— Buttons —— */
.vtu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  font-family: inherit;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s, filter 0.12s;
}

.vtu-btn:active {
  transform: scale(0.98);
}

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

.vtu-btn--primary:hover {
  filter: brightness(1.08);
}

.vtu-btn--primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: none;
}

.vtu-btn--success {
  background: var(--vtu-success);
  color: #042f2e;
}

.vtu-btn--success:hover {
  filter: brightness(1.06);
}

.vtu-btn--ghost {
  background: transparent;
  color: var(--vtu-text);
  border: 1px solid var(--vtu-border-soft);
}

.vtu-btn--ghost:hover {
  border-color: var(--vtu-accent);
  color: var(--vtu-accent-dim);
}

.vtu-btn-row {
  margin-top: 0.25rem;
}

/* —— Alerts —— */
.vtu-alert {
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  border: 1px solid var(--vtu-border);
}

.vtu-alert ul {
  margin: 0;
  padding-left: 1.1rem;
}

.vtu-alert--danger {
  background: rgba(248, 113, 113, 0.08);
  border-color: rgba(248, 113, 113, 0.35);
  color: #fecaca;
}

.vtu-alert--success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.35);
  color: #a7f3d0;
}

.vtu-alert--warn {
  background: rgba(251, 191, 36, 0.08);
  border-color: rgba(251, 191, 36, 0.35);
  color: #fde68a;
}

/* —— Links —— */
.vtu-link {
  color: var(--vtu-accent);
  text-decoration: none;
}

.vtu-link:hover {
  text-decoration: underline;
}

.vtu-auth__footer {
  text-align: center;
  font-size: 0.9rem;
  color: var(--vtu-muted);
  margin-top: 1.25rem;
}

/* —— Dashboard —— */
.vtu-dash header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.vtu-dash header h1 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}

.vtu-dash .sub {
  color: var(--vtu-muted);
  font-size: 0.9rem;
  margin: 0.35rem 0 0;
}

.vtu-logout {
  color: var(--vtu-muted);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--vtu-border-soft);
  border-radius: 8px;
  transition: color 0.15s, border-color 0.15s;
}

.vtu-logout:hover {
  color: var(--vtu-text);
  border-color: var(--vtu-muted);
}

.vtu-card {
  background: var(--vtu-card);
  border-radius: var(--vtu-radius);
  padding: 1.75rem;
  border: 1px solid var(--vtu-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

.vtu-card-label {
  color: var(--vtu-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.5rem;
}

.vtu-balance {
  font-size: 2rem;
  font-weight: 700;
  color: var(--vtu-success);
  letter-spacing: -0.02em;
  margin: 0;
}

.vtu-balance small {
  font-size: 1rem;
  font-weight: 600;
  color: var(--vtu-muted);
}

.vtu-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.vtu-actions .vtu-btn,
.vtu-actions .vtu-btn--ghost {
  width: auto;
  text-align: center;
}

.vtu-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.vtu-mini {
  background: var(--vtu-card-inner);
  border: 1px solid var(--vtu-border);
  border-radius: 12px;
  padding: 1rem;
}

.vtu-mini h3 {
  margin: 0;
  font-size: 0.95rem;
  color: var(--vtu-muted);
  font-weight: 600;
}

.vtu-mini .big {
  margin-top: 0.45rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.vtu-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  margin-top: 0.5rem;
}

.vtu-tag--user {
  background: #334155;
  color: #e2e8f0;
}

.vtu-tag--merchant {
  background: #14532d;
  color: #d1fae5;
}

.vtu-note {
  color: var(--vtu-muted);
  font-size: 0.85rem;
  margin-top: 0.8rem;
}

.vtu-mt {
  margin-top: 1rem;
}

.vtu-msg {
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

/* —— Service form card —— */
.vtu-panel {
  background: var(--vtu-card);
  border: 1px solid var(--vtu-border);
  border-radius: var(--vtu-radius);
  padding: 1.5rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.vtu-wallet-pill {
  display: inline-block;
  margin-top: 0.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--vtu-success);
}

/* —— Landing —— */
.vtu-landing {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(2rem + env(safe-area-inset-top, 0px)) max(1.25rem, env(safe-area-inset-right, 0px))
    calc(2rem + env(safe-area-inset-bottom, 0px)) max(1.25rem, env(safe-area-inset-left, 0px));
  text-align: center;
}

.vtu-landing h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: -0.03em;
}

.vtu-landing p {
  color: var(--vtu-muted);
  max-width: 28rem;
  margin: 0 auto 1.75rem;
  font-size: 1.05rem;
}

.vtu-landing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.vtu-landing__actions .vtu-btn {
  width: auto;
  min-width: 140px;
}

.vtu-landing__hint {
  margin-top: 2rem;
  font-size: 0.8rem;
  color: #5c6d82;
}