/**
 * SHARE - LocalShare UI Styles
 * Moteur Visuel IA
 */

/* ===========================================
   LAYOUT
   =========================================== */

body {
  background: var(--color-bg-primary);
  min-height: 100vh;
  margin: 0;
}

.share-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: var(--spacing-4);
}

/* ===========================================
   HEADER
   =========================================== */

.share-header {
  margin-bottom: var(--spacing-8);
}

.nav-tabs {
  display: flex;
  gap: var(--spacing-1);
  margin-bottom: var(--spacing-6);
  padding: var(--spacing-1);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

.nav-tab {
  padding: var(--spacing-2) var(--spacing-4);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
}

.nav-tab.active {
  color: var(--color-text-inverse);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.share-title {
  text-align: center;
}

.share-title h1 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.share-title .accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.share-title .subtitle {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  margin-top: var(--spacing-2);
}

/* ===========================================
   LOGIN SECTION
   =========================================== */

.login-section {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8);
}

.login-card {
  width: 100%;
  max-width: 400px;
}

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2);
}

.form-group input {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.form-group input::placeholder {
  color: var(--color-text-tertiary);
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.login-error {
  color: var(--color-error);
  font-size: var(--text-sm);
  text-align: center;
  margin-bottom: var(--spacing-4);
  min-height: 1.5em;
}

/* ===========================================
   MAIN CONTENT
   =========================================== */

.share-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

/* ===========================================
   UPLOAD ZONE
   =========================================== */

.upload-section {
  margin-bottom: var(--spacing-4);
}

.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-10);
  text-align: center;
  background: var(--color-bg-secondary);
  transition: var(--transition-base);
  cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.upload-zone.dragover {
  transform: scale(1.01);
}

.upload-zone__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-3);
}

.upload-zone__icon {
  width: 64px;
  height: 64px;
  color: var(--color-text-tertiary);
  transition: var(--transition-base);
}

.upload-zone:hover .upload-zone__icon,
.upload-zone.dragover .upload-zone__icon {
  color: var(--color-primary);
  transform: translateY(-4px);
}

.upload-zone__text {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  margin: 0;
}

.upload-zone__hint {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin: 0;
}

.upload-zone__progress {
  padding: var(--spacing-4);
}

.upload-zone__status {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-3);
}

/* ===========================================
   FILES SECTION
   =========================================== */

.files-section {
  flex: 1;
}

.files-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-4);
}

.files-header h2 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.files-list {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.files-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-12);
  color: var(--color-text-tertiary);
  text-align: center;
}

.files-empty svg {
  margin-bottom: var(--spacing-4);
  opacity: 0.5;
}

.files-empty p {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  margin: 0 0 var(--spacing-1);
}

.files-empty span {
  font-size: var(--text-sm);
}

/* ===========================================
   FILE ITEM
   =========================================== */

.file-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-fast);
}

.file-item:last-child {
  border-bottom: none;
}

.file-item:hover {
  background: var(--color-bg-tertiary);
}

.file-item__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
}

.file-item__icon svg {
  width: 24px;
  height: 24px;
}

.file-item__icon--image {
  background: var(--color-success-light);
  color: var(--color-success);
}

.file-item__icon--video {
  background: var(--color-info-light);
  color: var(--color-info);
}

.file-item__icon--audio {
  background: var(--color-secondary-light);
  color: var(--color-secondary);
}

.file-item__icon--document {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.file-item__info {
  flex: 1;
  min-width: 0;
}

.file-item__name {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-1);
  word-break: break-word;
}

.file-item__meta {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  display: flex;
  gap: var(--spacing-3);
}

.file-item__actions {
  display: flex;
  gap: var(--spacing-2);
  opacity: 0;
  transition: var(--transition-fast);
}

.file-item:hover .file-item__actions {
  opacity: 1;
}

/* ===========================================
   FILE THUMBNAIL (for images)
   =========================================== */

.file-item__preview {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.file-item__preview--image {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
}

.file-item__thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-base);
}

.file-item:hover .file-item__thumbnail {
  transform: scale(1.05);
}

/* Placeholder while loading */
.file-item__thumbnail {
  background: var(--color-bg-tertiary);
}

/* ===========================================
   FILE CATEGORIES
   =========================================== */

.file-category {
  border-bottom: 1px solid var(--color-border);
}

.file-category:last-child {
  border-bottom: none;
}

.file-category__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-4);
  background: var(--color-bg-tertiary);
  cursor: pointer;
  user-select: none;
  transition: var(--transition-fast);
}

.file-category__header:hover {
  background: var(--color-bg-hover);
}

.file-category__icon {
  font-size: var(--text-lg);
}

.file-category__label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

.file-category__count {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-left: auto;
}

.file-category__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  margin-left: var(--spacing-2);
}

.file-category__toggle:hover {
  color: var(--color-text-primary);
}

.file-category__toggle svg {
  transition: transform var(--transition-fast);
}

.file-category.collapsed .file-category__toggle svg {
  transform: rotate(-90deg);
}

.file-category__content {
  max-height: 50000px; /* Support hundreds of files */
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.file-category.collapsed .file-category__content {
  max-height: 0;
}

/* Remove border from last file in category */
.file-category__content .file-item:last-child {
  border-bottom: none;
}

/* ===========================================
   CHECKBOXES
   =========================================== */

/* Base checkbox container */
.file-item__select,
.file-category__select {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* Hide native checkbox */
.file-item__checkbox,
.file-category__checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* Custom checkmark */
.file-item__checkmark,
.file-category__checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-item__checkmark::after,
.file-category__checkmark::after {
  content: '';
  width: 6px;
  height: 10px;
  border: solid var(--color-text-inverse);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform var(--transition-fast);
}

/* Hover state */
.file-item__select:hover .file-item__checkmark,
.file-category__select:hover .file-category__checkmark {
  border-color: var(--color-primary);
}

/* Checked state */
.file-item__checkbox:checked + .file-item__checkmark,
.file-category__checkbox:checked + .file-category__checkmark {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.file-item__checkbox:checked + .file-item__checkmark::after,
.file-category__checkbox:checked + .file-category__checkmark::after {
  transform: rotate(45deg) scale(1);
}

/* Indeterminate state (for category) */
.file-category__checkbox:indeterminate + .file-category__checkmark {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.file-category__checkbox:indeterminate + .file-category__checkmark::after {
  width: 8px;
  height: 2px;
  border: none;
  background: var(--color-text-inverse);
  transform: rotate(0) scale(1);
}

/* Selected file item */
.file-item--selected {
  background: var(--color-primary-light);
}

/* ===========================================
   SELECTION BAR
   =========================================== */

.selection-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
  padding: var(--spacing-3) var(--spacing-6);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
  transform: translateY(100%);
  transition: transform 0.3s ease-out;
  z-index: 100;
}

.selection-bar--visible {
  transform: translateY(0);
}

.selection-bar__count {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
}

.selection-bar__actions {
  display: flex;
  gap: var(--spacing-2);
  flex-wrap: wrap;
}

.selection-bar__actions .btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.selection-bar__actions .btn svg {
  flex-shrink: 0;
}

/* ===========================================
   FOOTER
   =========================================== */

.share-footer {
  text-align: center;
  padding: var(--spacing-6) 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
}

/* ===========================================
   UPLOAD ITEM (during upload)
   =========================================== */

.upload-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-2);
}

.upload-item__info {
  flex: 1;
  min-width: 0;
}

.upload-item__name {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upload-item__progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.upload-item__progress .progress {
  flex: 1;
}

.upload-item__percent {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  min-width: 3em;
  text-align: right;
}

.upload-item--success .progress__bar {
  background: var(--color-success);
}

.upload-item--error .progress__bar {
  background: var(--color-error);
}

/* ===========================================
   RESPONSIVE
   =========================================== */

@media (max-width: 640px) {
  .share-container {
    padding: var(--spacing-3);
  }

  .share-title h1 {
    font-size: var(--text-2xl);
  }

  .nav-tabs {
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
  }

  .nav-tab {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--text-xs);
  }

  .upload-zone {
    padding: var(--spacing-6);
  }

  .upload-zone__icon {
    width: 48px;
    height: 48px;
  }

  .file-item {
    flex-wrap: wrap;
  }

  .file-item__actions {
    opacity: 1;
    width: 100%;
    justify-content: flex-end;
    margin-top: var(--spacing-2);
  }

  .files-empty {
    padding: var(--spacing-8);
  }

  .file-item__preview {
    width: 48px;
    height: 48px;
  }

  .file-category__header {
    padding: var(--spacing-2) var(--spacing-3);
  }

  .file-category__icon {
    font-size: var(--text-base);
  }

  .selection-bar {
    flex-direction: column;
    padding: var(--spacing-3);
    gap: var(--spacing-2);
  }

  .selection-bar__actions {
    width: 100%;
    justify-content: center;
  }

  .selection-bar__actions .btn {
    flex: 1;
    justify-content: center;
    font-size: var(--text-xs);
    padding: var(--spacing-2);
  }

  /* Hide text on very small screens, keep icons */
  .selection-bar__actions .btn span {
    display: none;
  }
}

/* ===========================================
   ANIMATIONS
   =========================================== */

@keyframes upload-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.upload-zone.uploading {
  animation: upload-pulse 1.5s ease-in-out infinite;
  pointer-events: none;
}