/* ==============================================
   HEADER STYLES
   Shared header component styles
   ============================================== */

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: rgba(11,16,32,.75);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(42, 52, 65, 0.6);
  transition: border-bottom 0.3s ease;
}

/* Keep header dark in light mode but make it more subtle */
:root[data-theme="light"] .app-header {
  background: rgba(11,16,32,.65);
  border-bottom: 1px solid rgba(58, 68, 81, 0.4);
}

/* Brand Section */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.logo-link:hover {
  opacity: 0.8;
}

.logo-img {
  width: 28px;
  height: 28px;
}

.brand h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: #ffffff !important;
}

/* Header Controls */
.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* File Input Wrapper */
.file-input {
  position: relative;
}

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

.file-input button {
  border: 1px solid var(--hover);
  background: var(--muted);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: var(--shadow);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

/* Control Groups - Visually grouped buttons in header */
.control-group {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 12px;
  background: rgba(25, 34, 68, 0.4);
  border: 1px solid rgba(42, 52, 85, 0.5);
}

.control-group button {
  border: none;
  background: transparent;
  padding: 8px 14px;
  margin: 0;
}

.control-group button:hover {
  background: rgba(255, 255, 255, 0.05);
}

/* Light theme control groups */
:root[data-theme="light"] .control-group {
  background: rgba(25, 34, 68, 0.3);
  border: 1px solid rgba(42, 52, 85, 0.4);
}