/* ===================================
   Header Search Overlay Styles
   의존: common.css (디자인 시스템 변수, 리셋, .sr-only, .icon)
   =================================== */

/* ===================================
   Search Design Tokens
   =================================== */
:root {
  /* Layout */
  --search-container-max-width: 1440px;
  --search-input-max-width: 900px;
  --search-height: 64px;

  /* Spacing */
  --search-padding-desktop: 40px;
  --search-padding-tablet: 32px;
  --search-padding-mobile: 24px;
  --search-gap: 4px;

  /* Border Radius */
  --search-radius-pill: 40px;
  --search-radius-md: 16px;
  --search-radius-sm: 12px;

  /* Colors */
  --search-bg: #F5F7FA;
  --search-input-bg: var(--color-white);
  --search-input-border: var(--color-gray-300);
  --search-input-border-focus: var(--color-primary-700);
  --search-btn-bg: var(--color-primary-900);
  --search-btn-bg-hover: var(--color-primary-700);
  --search-text-primary: var(--color-gray-900);
  --search-text-secondary: var(--color-gray-700);
  --search-placeholder: var(--color-gray-500);

  /* Typography */
  --search-font-size: var(--fs-body);
  --search-line-height: 1.5;

  /* Animation */
  --search-transition: all 0.3s ease;
  --search-slide-duration: 0.4s;
}

/* ===================================
   Search Overlay Container
   =================================== */
.header-search {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: opacity var(--search-slide-duration) ease,
              visibility var(--search-slide-duration) ease,
              transform var(--search-slide-duration) ease;
  z-index: 1002;
}

.header-search.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-overlay {
  width: 100%;
  background-color: var(--search-bg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.search-container {
  max-width: var(--search-container-max-width);
  margin: 0 auto;
  padding: var(--search-padding-desktop);
}

/* ===================================
   Search Form
   =================================== */
.search-form {
  width: 100%;
}

.search-input-group {
  display: flex;
  align-items: center;
  gap: var(--search-gap);
  max-width: var(--search-input-max-width);
  margin: 0 auto;
}

/* Search Input */
.search-input {
  flex: 1;
  height: var(--search-height);
  padding: 0 28px;
  font-family: var(--font-family);
  font-size: var(--search-font-size);
  font-weight: var(--fw-regular);
  line-height: var(--search-line-height);
  color: var(--search-text-primary);
  background-color: var(--search-input-bg);
  border: 2px solid var(--search-input-border);
  border-radius: var(--search-radius-sm);
  transition: var(--search-transition);
}

.search-input::placeholder {
  color: var(--search-placeholder);
}

.search-input:focus {
  border-color: var(--search-input-border-focus);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
  outline: none;
}

.search-input:hover {
  border-color: var(--search-text-secondary);
}

/* ===================================
   Search Button
   =================================== */
.search-submit {
  flex-shrink: 0;
  width: var(--search-height);
  height: var(--search-height);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--search-btn-bg);
  border: none;
  border-radius: var(--search-radius-sm);
  color: var(--color-white);
  cursor: pointer;
  transition: var(--search-transition);
}

.search-submit:hover {
  background-color: var(--search-btn-bg-hover);
  transform: scale(1.05);
}

.search-submit:active {
  transform: scale(0.95);
}

.search-submit .icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
}

/* ===================================
   Close Button
   =================================== */
.search-close {
  flex-shrink: 0;
  width: var(--search-height);
  height: var(--search-height);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--search-text-secondary);
  border: none;
  border-radius: var(--search-radius-sm);
  color: var(--color-white);
  cursor: pointer;
  transition: var(--search-transition);
}

.search-close:hover {
  background-color: var(--search-text-primary);
  transform: scale(1.05);
}

.search-close:active {
  transform: scale(0.95);
}

.search-close .icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
}

.search-close span {
  display: none;
}

/* ===================================
   Responsive: Tablet (768px ~ 1439px)
   =================================== */
@media (max-width: 1439px) {
  .search-container {
    padding: var(--search-padding-tablet);
  }

  .search-input-group {
    max-width: 100%;
  }

  .search-input {
    height: 56px;
    font-size: var(--fs-small);
    padding: 0 var(--space-6);
  }

  .search-submit {
    width: 56px;
    height: 56px;
  }

  .search-close {
    width: 56px;
    height: 56px;
  }
}

/* ===================================
   Responsive: Mobile (0 ~ 767px)
   =================================== */
@media (max-width: 767px) {
  .search-container {
    padding: var(--search-padding-mobile);
  }

  .search-input-group {
    max-width: 100%;
    gap: var(--space-2);
    position: relative;
  }

  .search-input {
    height: 48px;
    font-size: var(--fs-small);
    padding: 0 var(--space-5) 0 52px;
    border-radius: var(--search-radius-sm);
  }

  /* Search Button을 Input 내부 왼쪽으로 */
  .search-submit {
    position: absolute;
    left: 4px;
    width: 40px;
    height: 40px;
    background-color: transparent;
    color: var(--search-text-secondary);
    border-radius: var(--radius-full);
  }

  .search-submit:hover {
    background-color: rgba(0, 102, 204, 0.1);
    color: var(--search-btn-bg);
    transform: none;
  }

  .search-submit .icon {
    width: 20px;
    height: 20px;
  }

  .search-close {
    width: 48px;
    height: 48px;
  }

  .search-close .icon {
    width: 20px;
    height: 20px;
  }
}

/* ===================================
   Focus Visible
   =================================== */
.search-input:focus-visible,
.search-submit:focus-visible,
.search-close:focus-visible {
  outline: 1px solid var(--search-input-border-focus);
  outline-offset: 0;
}