/* ============================================
   SubTracker - Main Styles
   ============================================ */

:root {
  --bg-primary: #fafafa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f3f4f6;
  --bg-card: #ffffff;

  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;

  --accent-primary: #059669;
  --accent-secondary: #10b981;
  --accent-gradient: linear-gradient(135deg, #059669 0%, #10b981 100%);

  --color-blue: #3b82f6;
  --color-red: #ef4444;
  --color-orange: #f59e0b;
  --color-purple: #8b5cf6;
  --color-pink: #ec4899;
  --color-cyan: #06b6d4;

  --tag-culture: #8b5cf6;
  --tag-environnement: #10b981;
  --tag-social: #f59e0b;
  --tag-education: #3b82f6;
  --tag-sante: #ef4444;

  --border-color: #e5e7eb;
  --border-focus: #059669;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;

  --sidebar-width: 260px;
}

/* Utility */
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-secondary); }

button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; border: none; outline: none; }

/* ============================================
   Layout
   ============================================ */

.app-layout {
  display: flex;
  min-height: 100vh;
}

.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.page-header {
  padding: 1.5rem 2rem 1rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.page-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.page-body {
  flex: 1;
  padding: 1.5rem 2rem 2rem;
}

@media (max-width: 900px) {
  .main-content {
    margin-left: 0;
  }
  .page-header { padding: 4rem 1rem 1rem; }
  .page-body { padding: 1rem; }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
}
.btn-primary:hover { filter: brightness(1.1); }

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover { background: var(--border-color); }

.btn-ghost {
  color: var(--text-secondary);
  background: transparent;
}
.btn-ghost:hover { background: var(--bg-tertiary); }

.btn-danger {
  background: var(--color-red);
  color: #fff;
}
.btn-danger:hover { filter: brightness(1.1); }

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 0.95rem; }

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
   Cards
   ============================================ */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.card-body {
  padding: 1.25rem;
}

.card-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-tertiary);
}

/* ============================================
   KPI Cards
   ============================================ */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.kpi-change {
  font-size: 0.75rem;
  margin-top: 0.35rem;
  font-weight: 500;
}

.kpi-change.positive { color: var(--accent-primary); }
.kpi-change.negative { color: var(--color-red); }

.kpi-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

/* ============================================
   Status Badges
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-piste         { background: #f3f4f6; color: #6b7280; }
.badge-preparation   { background: #dbeafe; color: #1d4ed8; }
.badge-deposee       { background: #e0e7ff; color: #4338ca; }
.badge-instruction   { background: #fef3c7; color: #92400e; }
.badge-accordee      { background: #d1fae5; color: #065f46; }
.badge-conventionnee { background: #cffafe; color: #155e75; }
.badge-versee-partiel { background: #fce7f3; color: #9d174d; }
.badge-versee        { background: #059669; color: #fff; }
.badge-refusee       { background: #fee2e2; color: #991b1b; }
.badge-abandonnee    { background: #f3f4f6; color: #9ca3af; }

.badge-deadline-urgent { background: #fee2e2; color: #991b1b; }
.badge-deadline-soon   { background: #fef3c7; color: #92400e; }
.badge-deadline-ok     { background: #d1fae5; color: #065f46; }
.badge-deadline-closed { background: #f3f4f6; color: #9ca3af; }

/* ============================================
   Empty states
   ============================================ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  text-align: center;
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.empty-state-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.empty-state-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 400px;
  margin-bottom: 1.25rem;
}

/* ============================================
   Loading
   ============================================ */

.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
}

.loading-spinner::after {
  content: '';
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, #e5e7eb 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================
   Toast notifications
   ============================================ */

.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  animation: toast-in 0.3s ease;
  max-width: 380px;
}

.toast.success { border-left: 4px solid var(--accent-primary); }
.toast.error { border-left: 4px solid var(--color-red); }
.toast.warning { border-left: 4px solid var(--color-orange); }
.toast.info { border-left: 4px solid var(--color-blue); }

.toast-icon { font-size: 1.1rem; flex-shrink: 0; }
.toast-message { flex: 1; }

.toast-close {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.1rem;
  padding: 0.25rem;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(1rem); }
  to { opacity: 1; transform: translateY(0); }
}

.toast.removing {
  animation: toast-out 0.3s ease forwards;
}

@keyframes toast-out {
  to { opacity: 0; transform: translateX(100%); }
}

/* ============================================
   Auth Modal
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.visible {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.visible .modal {
  transform: translateY(0);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-close {
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: 1rem;
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.6rem 0.85rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

.form-textarea { resize: vertical; min-height: 80px; }

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.form-error {
  font-size: 0.75rem;
  color: var(--color-red);
  margin-top: 0.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================
   Tabs
   ============================================ */

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 1.25rem;
}

.tab {
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
  cursor: pointer;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}

.tab:hover { color: var(--text-primary); }
.tab.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
  font-weight: 600;
}

/* ============================================
   Search bar
   ============================================ */

.search-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.search-input-wrap {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.search-input-wrap .form-input {
  padding-left: 2.5rem;
}

.search-input-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.95rem;
  pointer-events: none;
}

.filters-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-select {
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-secondary);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  cursor: pointer;
}

/* ============================================
   View toggle
   ============================================ */

.view-toggle {
  display: inline-flex;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.view-toggle-btn {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.view-toggle-btn + .view-toggle-btn {
  border-left: 1px solid var(--border-color);
}

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

/* ============================================
   Page-specific: Auth (login page)
   ============================================ */

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-primary);
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 420px;
  padding: 2rem;
}

.auth-card .sidebar-logo {
  justify-content: center;
  margin-bottom: 1.5rem;
}

.auth-title {
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-toggle {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

.auth-toggle a {
  font-weight: 600;
  cursor: pointer;
}

/* ============================================
   Scrollbar
   ============================================ */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }

/* ============================================
   Discovery cards
   ============================================ */

.discovery-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.discovery-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  transition: box-shadow var(--transition-fast);
}

.discovery-card:hover {
  box-shadow: var(--shadow-md);
}

/* ============================================
   File dropzone
   ============================================ */

.file-dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.file-dropzone:hover,
.file-dropzone.dragover {
  border-color: var(--accent-primary);
  background: rgba(5, 150, 105, 0.04);
}

.file-dropzone-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  opacity: 0.4;
}

.file-dropzone-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.file-dropzone-link {
  color: var(--accent-primary);
  font-weight: 600;
  cursor: pointer;
}

.file-dropzone-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ============================================
   Document list
   ============================================ */

.doc-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.doc-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

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

.doc-item-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.doc-item-info {
  flex: 1;
  min-width: 0;
}

.doc-item-name {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-item-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.doc-item-actions {
  display: flex;
  gap: 0.25rem;
}