/* Navigation Header */
.app-nav {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-family: var(--font-family-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.brand-dot {
  width: 7px;
  height: 7px;
  background-color: var(--color-accent-crimson);
  border-radius: var(--radius-pill);
  display: inline-block;
  box-shadow: 0 0 10px var(--color-accent-crimson-glow);
}

.nav-status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-pill);
}

.status-dot-active {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background-color: #10B981;
}

/* Crimson Diamond Badge */
.crimson-diamond {
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-crimson);
  transform: rotate(45deg);
  display: inline-block;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: var(--color-interactive-dark);
  color: var(--color-text-inverted);
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
  background-color: var(--color-interactive-dark-hover);
  transform: translateY(-1px);
  box-shadow: 0 14px 28px -4px rgba(24, 24, 27, 0.35);
}

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

.btn-primary .chevron-accent {
  color: var(--color-accent-crimson);
  font-weight: 700;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-card);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-pill);
}

.btn-secondary:hover {
  background: var(--color-surface-pure);
  border-color: var(--color-border-subtle);
  transform: translateY(-1px);
}

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

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border-card);
  color: var(--color-text-primary);
  transition: var(--transition-fast);
}

.btn-icon:hover {
  background: var(--color-surface-pure);
  transform: translateY(-1px);
}

.btn-icon:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* Floating Omni-Dropzone Pill */
.dropzone-container {
  max-width: 680px;
  margin: 32px auto 0;
  position: relative;
  z-index: 10;
}

.dropzone-pill {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 36px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1.5px dashed var(--color-border-card);
  border-radius: 28px;
  box-shadow: var(--shadow-pill);
  transition: var(--transition-normal);
  cursor: pointer;
  text-align: center;
}

.dropzone-pill:hover, .dropzone-pill.drag-over {
  border-color: var(--color-accent-crimson);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 16px 36px -8px rgba(225, 29, 72, 0.12), var(--shadow-pill);
  transform: translateY(-2px);
}

.dropzone-icon-circle {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-low);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: var(--transition-fast);
}

.dropzone-pill:hover .dropzone-icon-circle {
  background: rgba(225, 29, 72, 0.08);
  color: var(--color-accent-crimson);
}

.dropzone-title {
  font-family: var(--font-family-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text-primary);
}

.dropzone-sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

/* Feature Tag Chips */
.feature-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}

.chip-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

/* Toasts */
.toast-container {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: var(--glass-bg-elevated);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  box-shadow: var(--shadow-dropdown);
  animation: toastIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.toast-error {
  border-color: rgba(225, 29, 72, 0.4);
}

.toast.toast-error .crimson-dot {
  background-color: var(--color-accent-crimson);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(17, 18, 21, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-card {
  width: 100%;
  max-width: 480px;
  background: var(--color-surface-pure);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border-card);
  box-shadow: var(--shadow-card);
  padding: 28px;
  animation: modalScale 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-family: var(--font-family-display);
  font-size: 20px;
  font-weight: 700;
}

.modal-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalScale {
  from { transform: scale(0.94); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}