/* ============================================
 * 观鼎山首页 · 页眉页脚样式 layout.css
 * 板块：页眉页脚
 * 包含：页眉、公告条、页脚
 * ============================================ */

/* ---------- 页眉 Header ---------- */
.gds-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(90, 106, 154, 0.15);
  transition: background var(--transition);
}

.gds-header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
  padding: 10px 20px;
  height: 106px;
}

/* Logo */
.gds-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.gds-logo-img {
  height: 96px;
  width: auto;
  display: block;
  border: 2px solid rgba(212, 168, 67, 0.5);
  border-radius: 6px;
  padding: 8px 16px;
  background: linear-gradient(135deg, rgba(212, 168, 67, 0.12), rgba(139, 105, 20, 0.08));
  box-shadow:
    0 0 24px rgba(212, 168, 67, 0.15),
    inset 0 0 30px rgba(212, 168, 67, 0.05);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.gds-logo-img:hover {
  border-color: rgba(212, 168, 67, 0.8);
  box-shadow:
    0 0 24px rgba(212, 168, 67, 0.25),
    inset 0 0 20px rgba(212, 168, 67, 0.08);
}

/* ---------- 页脚 Footer ---------- */
.gds-footer {
  margin-top: auto;
  padding: 20px 16px;
  background: var(--footer-bg);
  border-top: 1px solid rgba(90, 106, 154, 0.1);
  transition: background var(--transition);
}

.gds-footer-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gds-footer-brand {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0.7;
  letter-spacing: 0.1em;
}

.gds-footer-links {
  font-size: 0.8rem;
  opacity: 0.5;
}

.gds-footer-links a {
  color: var(--text);
  text-decoration: none;
  transition: opacity var(--transition);
}

.gds-footer-links a:hover {
  opacity: 0.9;
}

.gds-footer-sep {
  margin: 0 8px;
  opacity: 0.3;
}

.gds-footer-legal {
  font-size: 0.75rem;
  opacity: 0.35;
}

/* ---------- 站长入口（太极+站长，页脚底部） ---------- */
.gds-footer-admin {
  margin-top: 8px;
  font-size: 0.75rem;
  opacity: 0.35;
  transition: opacity var(--transition);
}

.gds-footer-admin:hover {
  opacity: 0.8;
}

.gds-admin-entry {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition);
}

.gds-admin-entry:hover {
  color: var(--accent, #D4A843);
}

.gds-admin-taiji {
  display: block;
  animation: gds-taiji-spin 4s linear infinite;
  opacity: 0.7;
}

.gds-admin-entry:hover .gds-admin-taiji {
  opacity: 1;
}

@keyframes gds-taiji-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.gds-admin-text {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

[data-theme="light"] .gds-admin-entry {
  color: #555;
}

[data-theme="light"] .gds-admin-entry:hover {
  color: #b8860b;
}

/* ---------- 响应式 ---------- */
@media (max-width: 480px) {
  .gds-header-inner {
    padding: 8px 12px;
    height: 70px;
    gap: 10px;
  }
  .gds-logo-img {
    height: 60px;
    padding: 6px 12px;
  }
  .gds-logo-text {
    font-size: 0.95rem;
  }
}

/* ============================================
 * 浮动工具栏（右上角）
 * ============================================ */
.gds-float-toolbar {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  background: rgba(13, 13, 26, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(90, 106, 154, 0.15);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.gds-float-toolbar .gds-tool-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  border: 1px solid rgba(90, 106, 154, 0.15);
  border-radius: 8px;
  background: rgba(30, 30, 51, 0.6);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  line-height: 1;
  padding: 0;
  color: var(--text);
}

.gds-float-toolbar .gds-tool-btn:hover {
  background: rgba(90, 106, 154, 0.2);
  border-color: rgba(90, 106, 154, 0.35);
  transform: scale(1.08);
}

.gds-float-toolbar .gds-tool-btn:active {
  transform: scale(0.95);
}

/* 方圆切换按钮：双符号（小左上角 / 大右下角） */
#gds-btn-lock {
  position: relative;
  display: block;
}
#gds-btn-lock::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 1px;
  background: rgba(90, 106, 154, 0.3);
  transform: translate(-50%, -50%) rotate(-45deg);
  pointer-events: none;
}
.gds-lock-active {
  position: absolute;
  top: 6px;
  left: 6px;
  font-size: 0.65rem;
  line-height: 1;
}
.gds-lock-inactive {
  position: absolute;
  bottom: 2px;
  right: 3px;
  font-size: 1.25rem;
  line-height: 1;
  opacity: 0.7;
}

/* ============================================
 * 会员入口（左上角浮动）
 * ============================================ */
.gds-user-entry {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0;
}

.gds-user-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px 6px 8px;
  border: 1.5px solid rgba(212, 168, 67, 0.35);
  border-radius: 20px;
  background: rgba(13, 13, 26, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--text);
  line-height: 1;
}

.gds-user-btn:hover {
  background: rgba(212, 168, 67, 0.15);
  border-color: rgba(212, 168, 67, 0.6);
  transform: scale(1.05);
}

.gds-user-btn:active {
  transform: scale(0.95);
}

/* 奖章 SVG 图标 */
.gds-user-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.gds-user-icon svg {
  width: 100%;
  height: 100%;
}

.gds-user-text {
  white-space: nowrap;
  opacity: 0.85;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ============================================
 * 全站导航圆形图标（四方向贴边）
 * ============================================ */
.gds-nav-circle {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: left 0.3s ease, right 0.3s ease, top 0.3s ease, bottom 0.3s ease, transform 0.3s ease;
  padding: 8px;
  cursor: pointer;
}

/* 默认：左侧贴边（居中） */
.gds-nav-circle {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}

/* 右侧贴边 */
.gds-nav-circle--right {
  left: auto;
  right: 0;
  top: 50%;
  bottom: auto;
  transform: translateY(-50%);
}

.gds-nav-circle--right .gds-nav-circle-btn {
  border-radius: 50% 0 0 50%;
  margin-left: 0;
  margin-right: -1px;
}

.gds-nav-circle--right .gds-nav-line--left {
  display: block;
}

.gds-nav-circle--right .gds-nav-line--right {
  display: none;
}

/* 顶部贴边 */
.gds-nav-circle--top {
  left: 50%;
  top: 0;
  right: auto;
  bottom: auto;
  transform: translateX(-50%);
}

.gds-nav-circle--top .gds-nav-circle-btn {
  border-radius: 0 0 50% 50%;
  margin-top: -1px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
}

.gds-nav-circle--top .gds-nav-line--top {
  display: none;
}

.gds-nav-circle--top .gds-nav-line--bottom {
  display: block;
}

.gds-nav-circle--top .gds-nav-line--left,
.gds-nav-circle--top .gds-nav-line--right {
  display: block;
}

/* 底部贴边 */
.gds-nav-circle--bottom {
  left: 50%;
  bottom: 0;
  top: auto;
  right: auto;
  transform: translateX(-50%);
}

.gds-nav-circle--bottom .gds-nav-circle-btn {
  border-radius: 50% 50% 0 0;
  margin-bottom: -1px;
  box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.3);
}

.gds-nav-circle--bottom .gds-nav-line--bottom {
  display: none;
}

.gds-nav-circle--bottom .gds-nav-line--top {
  display: block;
}

.gds-nav-circle--bottom .gds-nav-line--left,
.gds-nav-circle--bottom .gds-nav-line--right {
  display: block;
}

.gds-nav-circle-btn {
  position: relative;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: rgba(13, 13, 26, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  border-radius: 0 50% 50% 0;
  box-shadow: 2px 0 16px rgba(0, 0, 0, 0.3);
  padding: 0;
  margin-left: -1px;
}

.gds-nav-circle-btn:hover {
  background: rgba(30, 30, 60, 0.9);
  transform: scale(1.05);
}

/* 圆环装饰 */
.gds-nav-circle-ring {
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 2px solid rgba(212, 168, 67, 0.35);
  pointer-events: none;
}

/* 贴边短线（四方向装饰） */
.gds-nav-circle-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.gds-nav-line {
  position: absolute;
  background: rgba(212, 168, 67, 0.4);
  transition: background 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
  pointer-events: auto;
  cursor: pointer;
  border-radius: 3px;
}

.gds-nav-circle-btn:hover .gds-nav-line {
  background: rgba(212, 168, 67, 0.7);
}

/* 点击反馈 */
.gds-nav-line:active {
  background: rgba(255, 215, 0, 0.9);
  transform: scale(1.3);
}

/* 默认（左侧贴边）→ 隐藏左侧短线，显示右侧短线 */
.gds-nav-line--left {
  display: none;
}

/* 默认（左侧贴边）→ 右侧短线可见 */
.gds-nav-line--right {
  display: block;
}

/* 默认（左侧贴边）→ 上下短线均可见 */
.gds-nav-line--top,
.gds-nav-line--bottom {
  display: block;
}

/* 左侧贴边时，顶部和底部贴边覆盖默认的左侧线隐藏 */
.gds-nav-circle--top .gds-nav-line--left,
.gds-nav-circle--bottom .gds-nav-line--left {
  display: block;
}

.gds-nav-line--top {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 6px;
}

.gds-nav-line--bottom {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 6px;
}

.gds-nav-line--right {
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 24px;
}

.gds-nav-line--left {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 24px;
}

/* 汉堡图标（三横线）— 圆形按钮内粗线均匀分布 */
.gds-nav-hamburger {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  z-index: 1;
  width: 24px;
  height: 24px;
}

.gds-nav-hamburger span {
  display: block;
  width: 20px;
  height: 3px;
  background: rgba(200, 208, 224, 0.8);
  border-radius: 2px;
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
}

/* 打开态：三条线动画变为叉号 */
#gds-btn-nav.open .gds-nav-hamburger span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

#gds-btn-nav.open .gds-nav-hamburger span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

#gds-btn-nav.open .gds-nav-hamburger span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.gds-nav-circle-btn:hover .gds-nav-hamburger span {
  background: rgba(212, 168, 67, 0.8);
}

/* ============================================
 * 昼夜模式适配
 * ============================================ */
[data-theme="light"] .gds-float-toolbar {
  background: rgba(250, 246, 238, 0.85);
  border-color: rgba(192, 168, 106, 0.2);
}

[data-theme="light"] .gds-float-toolbar .gds-tool-btn {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(192, 168, 106, 0.2);
}

[data-theme="light"] .gds-user-btn {
  background: rgba(250, 246, 238, 0.85);
  border-color: rgba(192, 168, 106, 0.4);
}

[data-theme="light"] .gds-nav-circle-btn {
  background: rgba(250, 246, 238, 0.85);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .gds-nav-circle--top .gds-nav-circle-btn {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .gds-nav-circle--bottom .gds-nav-circle-btn {
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .gds-nav-circle-btn:hover {
  background: rgba(240, 235, 222, 0.95);
}

/* 响应式 */
@media (max-width: 480px) {
  .gds-float-toolbar {
    top: 8px;
    right: 8px;
    padding: 6px;
    gap: 4px;
  }
  .gds-float-toolbar .gds-tool-btn {
    width: 32px;
    height: 32px;
    font-size: 0.95rem;
  }
  .gds-user-entry {
    top: 8px;
    left: 8px;
  }
  .gds-user-btn {
    padding: 4px 10px 4px 6px;
    font-size: 0.7rem;
    gap: 4px;
  }
  .gds-user-icon {
    width: 16px;
    height: 16px;
  }
  .gds-nav-circle-btn {
    width: 40px;
    height: 40px;
  }
  .gds-nav-circle-ring {
    inset: 3px;
    border-width: 1.5px;
  }
  .gds-nav-hamburger {
    width: 20px;
    height: 20px;
    gap: 5px;
  }
  .gds-nav-hamburger span {
    width: 16px;
    height: 3px;
  }
  #gds-btn-nav.open .gds-nav-hamburger span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  #gds-btn-nav.open .gds-nav-hamburger span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}