:root {
  --app-bg: #0f1419;
  --app-card: #1a2332;
  --app-accent: #3d8bfd;
  --app-radius: 14px;
}

html {
  height: 100%;
}

.app-body {
  min-height: 100%;
  min-height: 100dvh;
  background: linear-gradient(160deg, #0f1419 0%, #1a2332 45%, #121820 100%);
  color: #e8eaed;
  padding-bottom: env(safe-area-inset-bottom);
}

.app-header {
  background: rgba(26, 35, 50, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: sticky;
  top: 0;
  z-index: 1030;
}

.app-brand-logo {
  max-height: 36px;
  max-width: 120px;
  object-fit: contain;
}

.app-main {
  padding: 1rem;
  padding-bottom: calc(1rem + env(safe-area-inset-bottom));
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 992px) {
  .app-main {
    max-width: 960px;
  }
}

.app-card {
  background: var(--app-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--app-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.app-card .card-header {
  background: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: #fff;
  font-weight: 600;
}

.app-card .form-control,
.app-card .form-select {
  background: #0f1419;
  border-color: rgba(255, 255, 255, 0.12);
  color: #e8eaed;
}

.app-card .form-control:focus,
.app-card .form-select:focus {
  border-color: var(--app-accent);
  box-shadow: 0 0 0 0.2rem rgba(61, 139, 253, 0.25);
  background: #121820;
  color: #fff;
}

.app-card label {
  color: #c4c9d1;
}

.login-shell {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  padding-top: max(1rem, env(safe-area-inset-top));
}

.login-card {
  width: 100%;
  max-width: 420px;
}

.captcha-img {
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  height: 44px;
}

.btn-primary {
  --bs-btn-bg: #2563eb;
  --bs-btn-border-color: #2563eb;
}

.merge-preview-hint {
  font-size: 0.85rem;
  color: #9aa3af;
}

.kvkk-notice {
  background: rgba(255, 255, 255, 0.06) !important;
  color: #c8cdd5 !important;
}

.kvkk-login-hint {
  line-height: 1.45;
  opacity: 0.92;
}

.merge-progress-wrap {
  display: none;
  margin-bottom: 1rem;
}

.merge-progress-wrap.show {
  display: block;
}

.merge-progress-wrap .progress {
  height: 12px;
  background: rgba(255, 255, 255, 0.08);
}

.merge-progress-wrap .progress-bar {
  transition: width 0.2s ease;
}

.a4-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  background: rgba(61, 139, 253, 0.15);
  color: #93c5fd;
}