/* ============================================
   Navbar Styles - 精确还原 Figma 设计
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-white);
  height: 90px;
  transition: box-shadow var(--duration-base) var(--ease-standard);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 48px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

/* --- Logo --- */
.navbar__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  padding: 7px 0; /* 触控目标扩展至 ≥44px */
  text-decoration: none;
}

.navbar__logo svg,
.navbar__logo img {
  width: 160px;
  height: 38px;
  display: block;
}

/* --- Menu --- */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: 52px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__menu-item > a {
  font-family: var(--font-primary);
  font-size: clamp(1rem, 0.16vw + 0.96rem, 1.25rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-standard);
  position: relative;
  display: inline-block;
}

.navbar__menu-item a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--duration-base) var(--ease-standard);
}

.navbar__menu-item a:hover {
  color: var(--color-primary);
}

.navbar__menu-item a:hover::after {
  width: 100%;
}

/* --- Products 下拉菜单 --- */
.navbar__menu-item--dropdown {
  position: relative;
}

/* 外层：承载阴影与过渡（clip-path 会裁掉 box-shadow，故分开）
   尺寸自适应内容：width: max-content / height: auto */
.navbar__dropdown-wrap {
  position: absolute;
  top: 100%;
  left: -25px;
  width: max-content;
  height: auto;
  padding-top: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  filter: drop-shadow(8px 8px 8px rgba(0, 0, 0, 0.1));
  transition: opacity var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard),
              visibility var(--duration-base) var(--ease-standard);
  z-index: 1001;
}

.navbar__menu-item--dropdown:hover .navbar__dropdown-wrap,
.navbar__menu-item--dropdown:focus-within .navbar__dropdown-wrap {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 内层：右下斜切形状（参照设计稿 path）+ 顶部蓝色条 */
.navbar__dropdown {
  position: relative;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 28px 0 22px; /* 底部留白 = 右下斜角高度 */
  list-style: none;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  /* 仅右下角斜切（固定 22px 裁角，不随内容高度变化；clip 不涉及顶部，圆角由 border-radius 保留） */
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.navbar__dropdown::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: var(--color-primary);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.navbar__dropdown-item a {
  display: block;
  height: 45px;
  padding: 8px 24px;
  font-family: var(--font-primary);
  font-size: clamp(0.9375rem, 0.08vw + 0.92rem, 1.0625rem);
  font-weight: 500;
  line-height: 1.6;
  color: var(--color-black);
  text-decoration: none;
  box-sizing: border-box;
  transition: background-color var(--duration-base) var(--ease-standard),
              color var(--duration-base) var(--ease-standard);
}

.navbar__dropdown-item a:hover {
  background: var(--color-secondary);
  color: var(--color-black);
}

.navbar__dropdown-item a::after {
  display: none;
}

/* --- Actions (右侧) --- */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.navbar__brochure {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-standard);
}

.navbar__brochure:hover {
  color: var(--color-primary);
}

.navbar__brochure:hover .navbar__icon path {
  fill: var(--color-primary);
}

.navbar__icon {
  width: 18px;
  height: 18px;
  display: block;
  flex-shrink: 0;
}

.navbar__icon path {
  transition: fill var(--duration-base) var(--ease-standard);
}

.navbar__divider {
  width: 1px;
  height: 15px;
  background: var(--color-divider);
  flex-shrink: 0;
}

.navbar__lang {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--duration-base) var(--ease-standard);
  background: none;
  border: none;
  padding: 0;
}

.navbar__lang:hover {
  color: var(--color-primary);
}

.navbar__lang:hover .navbar__icon path {
  fill: var(--color-primary);
}

.navbar__lang-icon {
  width: 19px;
  height: 19px;
}

/* --- Mobile Toggle --- */
.navbar__mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  width: 44px;
  height: 44px;
  padding: 8px;
  cursor: pointer;
  background: none;
  border: none;
}

.navbar__mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--duration-base) var(--ease-standard),
              opacity var(--duration-base) var(--ease-standard);
}

/* 三杠"音符"动画：右对齐顶住，错落伸缩长短（均衡器式，scaleX 从右收缩） */
@keyframes navbar-note-sway {
  0%, 100% { transform: scaleX(1); }
  50%      { transform: scaleX(var(--note-min, 0.5)); }
}

/* --- Mobile Actions（默认隐藏，仅移动端显示）--- */
.navbar__mobile-actions {
  display: none;
}

/* ============================================
   Responsive Navbar
   ============================================ */

@media (max-width: 1400px) {
  .navbar__container {
    padding: 0 32px;
  }
  .navbar__menu {
    gap: 36px;
  }
}

@media (max-width: 1200px) {
  .navbar__container {
    padding: 0 24px;
    gap: 24px;
  }
  .navbar__menu {
    gap: 28px;
  }
  .navbar__menu-item a {
    font-size: clamp(1rem, 0.08vw + 0.98rem, 1.125rem);
  }
  .navbar__logo svg,
  .navbar__logo img {
    width: 140px;
  }
}

@media (max-width: 992px) {
  .navbar {
    height: 64px;
  }

  .navbar__container {
    padding: 0 20px;
  }

  .navbar__logo svg,
  .navbar__logo img {
    width: 120px;
    height: auto;
  }

  .navbar__menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    flex-direction: column;
    gap: 0;
    padding: 24px 20px;
    transform: translateX(100%);
    transition: transform var(--duration-base) var(--ease-standard);
    overflow-y: auto;
  }

  .navbar__menu.is-open {
    transform: translateX(0);
  }

  .navbar__menu-item {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .navbar__menu-item a {
    display: block;
    padding: 16px 0;
    font-size: clamp(1.25rem, 0.16vw + 1.21rem, 1.5rem);
  }

  .navbar__menu-item a::after {
    display: none;
  }

  /* 移动端：下拉菜单默认收起，点击主菜单展开（同级互斥） */
  .navbar__menu-item--dropdown {
    position: static;
  }

  .navbar__dropdown-wrap {
    position: static;
    width: 100%;
    height: auto;
    opacity: 1;
    visibility: visible;
    transform: none;
    filter: none;
    padding: 0;
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--duration-base) var(--ease-standard),
                padding var(--duration-base) var(--ease-standard);
  }

  .navbar__menu-item--dropdown.is-open .navbar__dropdown-wrap {
    grid-template-rows: 1fr;
    padding-bottom: 8px;
  }

  .navbar__dropdown {
    height: auto;
    min-height: 0;
    overflow: hidden;
    padding: 0;
    border-radius: 0;
    clip-path: none;
  }

  .navbar__dropdown::before {
    display: none;
  }

  .navbar__dropdown-item {
    border-bottom: 1px solid var(--color-border);
  }

  .navbar__dropdown-item:last-child {
    border-bottom: none;
  }

  .navbar__dropdown-item a {
    height: auto;
    padding: 12px 20px;
    font-size: clamp(1.125rem, 0.08vw + 1.1rem, 1.25rem);
  }

  .navbar__dropdown-item a:hover {
    background: var(--color-secondary);
    color: var(--color-black);
  }

  .navbar__dropdown-item a::after {
    display: none;
  }

  .navbar__actions {
    display: none;
  }

  .navbar__mobile-toggle {
    display: flex;
  }

  /* 可展开主菜单后置 + 号（展开时变 −） */
  .navbar__dropdown-trigger::after {
    content: "+";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: block;
    font-family: var(--font-primary);
    font-size: clamp(1rem, 0.32vw + 0.92rem, 1.5rem);
    font-weight: 400;
    line-height: 1;
    color: var(--color-text);
    pointer-events: none;
  }

  .navbar__menu-item--dropdown.is-open .navbar__dropdown-trigger::after {
    content: "−";
    color: var(--color-primary);
  }

  /* Mobile Actions：菜单最底部 BROCHURE + EN */
  .navbar__mobile-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: auto;
    padding-top: 24px;
    padding-bottom: 20px;
    border-top: none;
  }

  .navbar__mobile-actions__brochure,
  .navbar__mobile-actions__lang {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    color: var(--color-text);
    text-decoration: none;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    transition: color var(--duration-base) var(--ease-standard);
  }

  .navbar__mobile-actions__brochure:hover,
  .navbar__mobile-actions__lang:hover {
    color: var(--color-primary);
  }

  .navbar__mobile-actions__brochure:hover .navbar__mobile-actions__icon path,
  .navbar__mobile-actions__lang:hover .navbar__mobile-actions__icon path {
    fill: var(--color-primary);
  }

  .navbar__mobile-actions__icon {
    width: 18px;
    height: 18px;
    display: block;
    flex-shrink: 0;
  }

  .navbar__mobile-actions__icon path {
    transition: fill var(--duration-base) var(--ease-standard);
  }

  .navbar__mobile-actions__divider {
    width: 1px;
    height: 15px;
    background: var(--color-divider);
    flex-shrink: 0;
  }

  .navbar__mobile-actions__lang {
    font-weight: 400;
    text-transform: capitalize;
  }

  .navbar__mobile-actions__lang .navbar__mobile-actions__icon {
    width: 19px;
    height: 19px;
  }

  /* 三杠"音符"错落伸缩：右侧顶住（origin right），各杠收缩幅度/相位错开 */
  .navbar__mobile-toggle span:nth-child(1) {
    transform-origin: right center;
    animation: navbar-note-sway var(--duration-xl) var(--ease-standard) infinite;
    --note-min: 0.35;
  }

  .navbar__mobile-toggle span:nth-child(2) {
    transform-origin: right center;
    animation: navbar-note-sway var(--duration-xl) var(--ease-standard) -0.267s infinite;
    --note-min: 0.8;
  }

  .navbar__mobile-toggle span:nth-child(3) {
    transform-origin: right center;
    animation: navbar-note-sway var(--duration-xl) var(--ease-standard) -0.534s infinite;
    --note-min: 0.55;
  }

  /* 展开态：三杠合成 X（音符伸缩停止；transform-origin 重置为 center，
     否则音符动画的 right center 会让两条杠绕右端旋转交叉成 ">" 而非 X） */
  .navbar__mobile-toggle.is-open {
    position: relative;
  }

  .navbar__mobile-toggle.is-open span {
    animation: none;
    transition: none;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    transform-origin: center;
  }

  .navbar__mobile-toggle.is-open span:nth-child(1) {
    transform: translate(-50%, -50%) rotate(45deg);
  }

  .navbar__mobile-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .navbar__mobile-toggle.is-open span:nth-child(3) {
    transform: translate(-50%, -50%) rotate(-45deg);
  }
}

@media (max-width: 576px) {
  .navbar__logo svg,
  .navbar__logo img {
    width: 110px;
  }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .navbar__menu,
  .navbar__dropdown-wrap,
  .navbar__mobile-toggle span { transition: none; animation: none; }
}