frontend/src/components/common/FileUpload.css

/* ============================================================
   FileUpload Component Styles
   ============================================================ */

.fu-root {
  width: 100%;
}

/* ── Drop Zone ── */
.fu-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  border: 2px dashed var(--color-neutral-300);
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  background: var(--color-neutral-50);
  cursor: pointer;
  transition: all 0.22s ease;
  position: relative;
  overflow: hidden;
  text-align: center;
  min-height: 140px;
}

.fu-zone:hover {
  border-color: var(--color-primary-400);
  background: var(--color-primary-50);
}

.fu-zone--dragging {
  border-color: var(--color-primary-500);
  background: linear-gradient(135deg, var(--color-primary-50), #dcfce7);
  transform: scale(1.01);
  box-shadow: 0 0 0 4px rgba(45, 106, 79, 0.12);
}

.fu-zone--uploading {
  pointer-events: none;
  opacity: 0.85;
}

/* Hidden native input */
.fu-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* Icon */
.fu-zone__icon {
  font-size: 2.2rem;
  color: var(--color-primary-400);
  transition: color 0.2s, transform 0.2s;
}

.fu-zone:hover .fu-zone__icon,
.fu-zone--dragging .fu-zone__icon {
  color: var(--color-primary-600);
  transform: translateY(-2px);
}

.fu-zone__label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-neutral-700);
  margin: 0;
}

.fu-zone__hint {
  font-size: 0.78rem;
  color: var(--color-neutral-400);
  margin: 0;
}

/* ── Progress Bar ── */
.fu-progress {
  width: 100%;
  height: 6px;
  background: var(--color-neutral-200);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
  margin-top: 0.5rem;
}

.fu-progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-primary-400));
  border-radius: 999px;
  transition: width 0.2s ease;
}

.fu-progress__label {
  position: absolute;
  right: 0;
  top: -1.5rem;
  font-size: 0.75rem;
  color: var(--color-primary-600);
  font-weight: 600;
}

/* ── Preview State ── */
.fu-preview {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 2px solid var(--color-neutral-200);
  background: var(--color-neutral-50);
}

.fu-preview__img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.fu-preview__doc {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem;
  color: var(--color-neutral-500);
}

.fu-preview__doc-icon {
  font-size: 2.5rem;
  color: var(--color-primary-400);
}

/* Remove button */
.fu-preview__remove {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 2rem;
  height: 2rem;
  background: rgba(0, 0, 0, 0.55);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s;
  z-index: 2;
}

.fu-preview__remove:hover {
  background: rgba(239, 68, 68, 0.85);
}

/* Success badge */
.fu-preview__success {
  position: absolute;
  bottom: 0.5rem;
  left: 0.5rem;
  background: rgba(16, 185, 129, 0.9);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ── Error ── */
.fu-error {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: #EF4444;
}

/* ── Spin (shared) ── */
@keyframes spin {
  to { transform: rotate(360deg); }
}
.spin-icon {
  animation: spin 0.8s linear infinite;
}