*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Tajawal', sans-serif;
  background: var(--nodes-bg);
  color: var(--nodes-text);
  min-height: 100vh;
  line-height: 1.6;
}

.site-header {
  background: var(--nodes-header-gradient);
  color: var(--nodes-white);
  padding: 28px 24px;
  box-shadow: 0 8px 32px rgba(28, 110, 142, 0.25);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-logo {
  height: 56px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.95);
  padding: 8px 14px;
  border-radius: 12px;
}

.brand h1 {
  font-size: 1.6rem;
  font-weight: 800;
}

.brand p {
  opacity: 0.9;
  font-size: 0.95rem;
}

.header-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
  opacity: 0.92;
  font-size: 0.9rem;
}

.brand-showcase {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.showcase-block {
  background: var(--nodes-surface);
  border: 1px solid var(--nodes-border);
  border-radius: 16px;
  padding: 20px;
}

.showcase-block h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--nodes-primary-dark);
  margin-bottom: 16px;
}

.color-palette {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 12px;
}

.color-chip {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--nodes-border);
  background: var(--nodes-white);
}

.color-chip .swatch {
  height: 56px;
}

.color-chip .info {
  padding: 8px 10px;
}

.color-chip .name {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--nodes-text);
}

.color-chip .hex {
  font-size: 0.72rem;
  color: var(--nodes-text-muted);
  font-family: monospace;
  direction: ltr;
  text-align: left;
}

.logo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.logo-card {
  border-radius: 12px;
  border: 1px solid var(--nodes-border);
  overflow: hidden;
  background: var(--nodes-white);
}

.logo-card .preview {
  height: 72px;
  display: grid;
  place-items: center;
  padding: 10px;
}

.logo-card img {
  max-height: 48px;
  max-width: 100%;
  object-fit: contain;
}

.logo-card .label {
  padding: 8px 10px;
  font-size: 0.75rem;
  color: var(--nodes-text-muted);
  border-top: 1px solid var(--nodes-border);
  text-align: center;
}

.tabs {
  max-width: 1200px;
  margin: 24px auto 0;
  padding: 0 24px;
  display: flex;
  gap: 10px;
}

.tab {
  flex: 1;
  max-width: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border: 1px solid var(--nodes-border);
  border-radius: 14px 14px 0 0;
  background: #E8EEF2;
  color: var(--nodes-text-muted);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab svg {
  width: 18px;
  height: 18px;
}

.tab.active {
  background: var(--nodes-surface);
  color: var(--nodes-primary-dark);
  border-bottom-color: var(--nodes-surface);
  box-shadow: 0 -4px 20px rgba(28, 110, 142, 0.08);
}

.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.panel {
  display: none;
  background: var(--nodes-surface);
  border: 1px solid var(--nodes-border);
  border-radius: 0 16px 16px 16px;
  padding: 28px;
  box-shadow: 0 12px 40px rgba(28, 110, 142, 0.06);
}

.panel.active {
  display: block;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.panel-header h2 {
  font-size: 1.25rem;
  color: var(--nodes-primary-dark);
}

.filter-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--nodes-border);
  background: var(--nodes-white);
  color: var(--nodes-text-muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--nodes-primary);
  border-color: var(--nodes-primary);
  color: var(--nodes-white);
}

.files-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.files-grid.empty::after {
  content: 'لا توجد ملفات بعد — ارفع ملفات من تبويب "رفع ملفات جديدة"';
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  color: var(--nodes-text-muted);
  border: 2px dashed var(--nodes-border);
  border-radius: 14px;
}

.file-card {
  border: 1px solid var(--nodes-border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--nodes-white);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.file-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(28, 110, 142, 0.12);
}

.file-card-preview {
  height: 140px;
  background: #F0F4F7;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.file-card-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.file-card-preview .ext-badge {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--nodes-primary);
  text-transform: uppercase;
}

.file-card-body {
  padding: 14px 16px;
}

.file-card-body .name {
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
}

.file-card-body .meta {
  font-size: 0.8rem;
  color: var(--nodes-text-muted);
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.file-card-body .tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.tag-logo {
  background: rgba(28, 110, 142, 0.12);
  color: var(--nodes-primary-dark);
}

.tag-identity {
  background: rgba(153, 184, 197, 0.35);
  color: var(--nodes-primary-dark);
}

.file-card-actions {
  display: flex;
  gap: 8px;
}

.btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: 10px;
  border: none;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--nodes-primary);
  color: var(--nodes-white);
}

.btn-primary:hover {
  background: var(--nodes-primary-dark);
}

.btn-danger {
  background: rgba(220, 38, 38, 0.1);
  color: #DC2626;
}

.btn-danger:hover {
  background: rgba(220, 38, 38, 0.18);
}

.upload-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.upload-card {
  border: 1px solid var(--nodes-border);
  border-radius: 14px;
  padding: 22px;
  background: #FAFCFD;
}

.upload-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.upload-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.logo-icon {
  background: rgba(28, 110, 142, 0.15);
  color: var(--nodes-primary);
}

.identity-icon {
  background: rgba(153, 184, 197, 0.4);
  color: var(--nodes-primary-dark);
}

.upload-card h3 {
  font-size: 1.05rem;
  color: var(--nodes-primary-dark);
}

.upload-card p {
  font-size: 0.85rem;
  color: var(--nodes-text-muted);
}

.dropzone {
  position: relative;
  border: 2px dashed var(--nodes-accent);
  border-radius: 14px;
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  background: var(--nodes-white);
  transition: all 0.2s ease;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--nodes-primary);
  background: rgba(28, 110, 142, 0.04);
}

.dropzone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone p {
  font-weight: 700;
  color: var(--nodes-primary-dark);
  margin-bottom: 6px;
}

.dropzone span {
  font-size: 0.82rem;
  color: var(--nodes-text-muted);
}

.dropzone.uploading {
  opacity: 0.6;
  pointer-events: none;
}

.toast-container {
  position: fixed;
  top: 24px;
  left: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  min-width: 280px;
  padding: 14px 18px;
  border-radius: 12px;
  background: var(--nodes-black);
  color: var(--nodes-white);
  font-weight: 600;
  font-size: 0.92rem;
  animation: slideIn 0.3s ease;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.toast.success { border-right: 4px solid #22C55E; }
.toast.error { border-right: 4px solid #EF4444; }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-16px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 900px) {
  .brand-showcase {
    grid-template-columns: 1fr;
  }

  .tabs {
    flex-direction: column;
  }

  .tab {
    max-width: none;
    border-radius: 12px;
  }

  .panel {
    border-radius: 16px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    text-align: center;
  }

  .brand {
    flex-direction: column;
  }

  .header-meta {
    text-align: center;
  }
}