.header {
  height: var(--header-height);
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.left-section {
  display: flex;
  align-items: center;
}

.hamburger-menu {
  height: 24px;
  margin: 0;
}

.hamburger-button {
  margin-left: 24px;
  margin-right: 24px;
}

.youtube-logo {
  height: 20px;
}

.middle-section {
  flex: 1;
  margin-left: 70px;
  margin-right: 35px;
  max-width: 500px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-form {
  flex: 1;
  display: flex;
  align-items: center;
  min-width: 0;
}

.search-bar {
  flex: 1;
  height: 36px;
  padding-left: 10px;
  font-size: 16px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  box-shadow: inset 1px 2px 3px rgb(0 0 0 / 5%);
  width: 0;
}

.search-bar::placeholder {
  font-size: 16px;
}

.search-button {
  height: 40px;
  width: 66px;
  background-color: rgb(240 240 240);
  border-width: 1px;
  border-style: solid;
  border-color: var(--color-border);
  margin-left: -1px;
}

.search-button,
.voice-search-button,
.icon-button,
.youtube-home-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.icon-button {
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  line-height: 1;
}

.youtube-home-container {
  text-decoration: none;
  color: inherit;
}

.search-button .tooltip,
.voice-search-button .tooltip,
.icon-button .tooltip,
.youtube-home-container .tooltip {
  position: absolute;
  background-color: var(--color-tooltip-bg);
  color: var(--color-tooltip-text);
  padding: 4px 8px;
  border-radius: 2px;
  font-size: 12px;
  bottom: -30px;
  opacity: 0;
  transition: opacity 0.15s;
  pointer-events: none;
  white-space: nowrap;
}

.search-button:hover .tooltip,
.voice-search-button:hover .tooltip,
.icon-button:hover .tooltip,
.youtube-home-container:hover .tooltip {
  opacity: 1;
}

.search-icon {
  height: 25px;
}

.voice-search-button {
  height: 40px;
  width: 40px;
  border-radius: 20px;
  border: none;
  background-color: rgb(245 245 245);
}

.voice-search-icon {
  height: 24px;
}

.right-section {
  width: 180px;
  margin-right: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  position: relative;
}

.upload-icon {
  height: 24px;
}

.youtube-apps-icon {
  height: 24px;
}

.notifications-icon {
  height: 24px;
}

.notifications-icon-container {
  position: relative;
}

.notifications-panel {
  position: fixed;
  right: 20px;
  top: calc(var(--header-height) + 12px);
  width: 280px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgb(0 0 0 / 15%);
  padding: 12px;
  z-index: 300;
}

.notifications-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
}

.notifications-header .icon-button {
  font-size: 12px;
  padding: 4px 6px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.notifications-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--color-text);
}

.notifications-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

.notifications-list li:last-child {
  border-bottom: none;
}

.notifications-count {
  position: absolute;
  top: -2px;
  right: -5px;
  background-color: var(--color-danger);
  color: var(--color-tooltip-text);
  font-size: 11px;
  padding: 2px 5px;
  border-radius: 10px;
}

.current-user-picture {
  height: 32px;
  border-radius: 16px;
}

.search-button:focus-visible,
.voice-search-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.icon-button:focus-visible,
.youtube-home-container:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (max-width: 900px) {
  .middle-section {
    margin-left: 16px;
    margin-right: 16px;
  }

  .right-section {
    width: 150px;
    margin-right: 12px;
  }
}

@media (max-width: 600px) {
  .youtube-home-container {
    display: none;
  }

  .right-section {
    width: 120px;
  }

  .notifications-panel {
    left: 16px;
    right: 16px;
    width: auto;
  }
}

/* Create modal styles */
.create-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.45);
  z-index: 1000;
}

.create-modal[aria-hidden="false"] {
  display: flex;
}

.create-dialog {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 18px;
  width: 420px;
  max-width: calc(100% - 32px);
}

.create-dialog h2 {
  margin-top: 0;
  margin-bottom: 8px;
}

/* modal animation */
.create-dialog {
  transform-origin: center;
  transform: translateY(-8px) scale(0.995);
  opacity: 0;
  transition: transform 160ms ease, opacity 160ms ease;
}

.create-modal[aria-hidden="false"] .create-dialog {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* close button */
.modal-close {
  position: absolute;
  right: 10px;
  top: 8px;
  background: transparent;
  border: none;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.modal-close:focus {
  outline: 2px solid var(--color-accent);
  border-radius: 4px;
}

/* thumbnail preview */
#create-thumbnail-preview img {
  width: 140px;
  height: auto;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

/* small sync button */
#sync-button {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1000;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 8px;
  border-radius: 999px;
  cursor: pointer;
}
.create-dialog label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-muted);
}

.create-dialog input {
  width: 100%;
  padding: 8px;
  margin-top: 6px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 12px;
}

.modal-actions button {
  padding: 8px 12px;
  border-radius: 6px;
}

#create-submit {
  background: var(--color-accent);
  color: white;
  border: none;
}

#create-cancel {
  background: transparent;
  border: 1px solid var(--color-border);
}