/* ==========================================
   HypeHere - Layout Styles
   Header, Sidebar, Main Layout, Footer
   ========================================== */

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  z-index: var(--z-sticky);
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease-in-out;
}

/* Header scroll states */
.header.header-hidden {
  transform: translateY(-100%);
}

.header.header-visible {
  transform: translateY(0);
}

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

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
}

.header-brand:hover {
  text-decoration: none;
  color: var(--color-primary-dark);
}

.header-logo {
  width: 40px;
  height: 40px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header-nav-link:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-primary);
  text-decoration: none;
}

.header-nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-bg-secondary);
}

.header-search {
  flex: 1;
  max-width: 400px;
  margin: 0 var(--space-lg);
}

.header-search-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  padding-left: var(--space-xl);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.header-search-input:focus {
  outline: none;
  background-color: var(--color-bg);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-icon-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text);
  background: none;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.header-icon-btn:hover {
  background-color: var(--color-bg-secondary);
}

.header-icon-btn .badge-notification {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  font-size: 11px;
  font-weight: var(--font-weight-bold);
  background-color: var(--color-danger, var(--color-error));
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-user {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.header-user:hover {
  background-color: var(--color-bg-secondary);
}


/* ===== Main Layout ===== */
/* Add padding-top to body to compensate for fixed header */
body {
  padding-top: var(--header-height);
}

.layout {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.main-content {
  flex: 1;
  padding: var(--space-lg);
  background-color: var(--color-bg);
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
  display: none;  /* Sidebar removed - using bottom nav instead */
  width: var(--sidebar-width);
  background-color: var(--color-bg);
  border-right: 1px solid var(--color-border);
  padding: var(--space-lg);
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

.sidebar-section {
  margin-bottom: var(--space-xl);
}

.sidebar-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-md);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: var(--font-weight-medium);
}

.sidebar-nav-link:hover {
  background-color: var(--color-bg-secondary);
  text-decoration: none;
}

.sidebar-nav-link.active {
  background-color: var(--color-primary);
  color: white;
}

.sidebar-user-card {
  padding: var(--space-md);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
}

.sidebar-user-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-user-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.sidebar-user-stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
}

.sidebar-user-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.sidebar-user-stat-value {
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.sidebar-user-stat-label {
  color: var(--color-text-light);
}

/* ===== Footer ===== */
.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  margin-top: auto;
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.footer-section-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-link {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* ===== Content Feed Layout ===== */
.feed-container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  overflow-x: hidden;
}

.post-card {
  width: 100%;
  max-width: 100%;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  padding: var(--space-lg);
  transition: box-shadow var(--transition-fast);
}

.post-card:hover {
  box-shadow: var(--shadow-md);
}

.post-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.post-author-info {
  flex: 1;
}

.post-author-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  text-decoration: none;
}

.post-author-name:hover {
  text-decoration: underline;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.post-content {
  margin-bottom: var(--space-md);
  line-height: var(--line-height-relaxed);
}

.post-actions {
  display: flex;
  gap: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
}

.post-action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-text-light);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.post-action-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-primary);
}

.post-action-btn.active {
  color: var(--color-primary);
}

.post-action-btn .like-text {
  display: none;
}

/* ===== Bottom Navigation (Always Visible, Mobile-Optimized) ===== */
.mobile-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  display: flex;
  justify-content: space-around;
  background-color: var(--color-bg);
  border-top: 0.0625rem solid var(--color-border);  /* 1px → responsive */
  padding: var(--space-sm) 0;
  padding-bottom: max(var(--space-sm), env(safe-area-inset-bottom)); /* iPhone notch support */
  box-shadow: var(--shadow-lg);
}

.mobile-nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);         /* Increased for better touch target */
  min-height: 2.75rem;                              /* Ensure 44px minimum touch target */
  min-width: 2.75rem;                               /* Mobile-friendly touch area */
  color: var(--color-text-light);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: color var(--transition-fast);
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0.05); /* Better mobile touch feedback */
}

.mobile-nav-link svg {
  width: 1.5rem;                                    /* 24px base → scales 21px(mobile) to 27px(desktop) */
  height: 1.5rem;
  flex-shrink: 0;
}

.mobile-nav-link.active {
  color: var(--color-primary);
}

.mobile-nav-link:hover {
  text-decoration: none;
}

.mobile-nav-link:active {
  background-color: rgba(0, 0, 0, 0.05);            /* Touch feedback */
  border-radius: var(--radius-md);
}

/* Create Button (FAB style) */
.mobile-nav-create {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.create-button {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
  position: relative;
  top: -8px;
}

.create-button:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.create-button:active {
  transform: scale(0.95);
}

.create-button svg {
  color: white;
}

/* Main content responsive padding (mobile-first) */
.main-content {
  padding: var(--space-md);                    /* Mobile: 1rem = 14px */
  padding-bottom: calc(var(--mobile-nav-height) + var(--space-md)); /* Space for bottom nav */
}

/* ===== Responsive Design (Mobile-First) ===== */

/* Small mobile (320px+) - Extra tight spacing for small screens */
@media (min-width: 320px) {
  .main-content {
    padding: var(--space-sm);                  /* Tighter on very small screens */
    padding-bottom: calc(var(--mobile-nav-height) + var(--space-sm));
  }
}

/* Large mobile (480px+) - Slightly more breathing room */
@media (min-width: 480px) {
  .main-content {
    padding: var(--space-md);                  /* 1rem scaling */
    padding-bottom: calc(var(--mobile-nav-height) + var(--space-md));
  }
}

/* Small tablet (640px+) - Increase padding */
@media (min-width: 640px) {
  .main-content {
    padding: var(--space-lg);                  /* 1.5rem scaling */
    padding-bottom: calc(var(--mobile-nav-height) + var(--space-lg));
  }
}


/* Desktop (1024px+) - More spacious layout */
@media (min-width: 1024px) {
  .sidebar {
    width: 12.5rem;                             /* 200px base, now responsive */
  }

  .main-content {
    padding: var(--space-xl);                   /* 2rem scaling */
    padding-bottom: calc(var(--mobile-nav-height) + var(--space-xl));
  }
}

/* Large desktop (1280px+) - Maximum comfort */
@media (min-width: 1280px) {
  .main-content {
    padding: var(--space-2xl);                  /* 3rem scaling */
    padding-bottom: calc(var(--mobile-nav-height) + var(--space-2xl));
  }
}

/* Extra large desktop (1536px+) - Ultra spacious */
@media (min-width: 1536px) {
  .main-content {
    padding: var(--space-3xl);                  /* 4rem scaling */
    padding-bottom: calc(var(--mobile-nav-height) + var(--space-3xl));
  }
}

/* ===== Mobile Feed Optimization: Tighter Vertical Spacing ===== */
@media (max-width: 767px) {
  /* 1. Tighter main content padding */
  .main-content {
    padding: 0.75rem;
    padding-bottom: calc(var(--mobile-nav-height) + 0.75rem);
  }

  /* 2. Reduce post card padding (50% reduction) */
  .post-card {
    padding: 0.75rem;
    margin-bottom: 0.75rem;
  }

  /* 3. Tighter post header spacing */
  .post-header {
    margin-bottom: 0.75rem;
  }

  /* 4. Optimize post content line height */
  .post-content {
    line-height: 1.5;
    margin-bottom: 0.75rem;
  }

  /* 5. Reduce post actions spacing */
  .post-actions {
    gap: 0.75rem;
    padding-top: 0.75rem;
  }

  /* 6. Optimize card body padding */
  .card-body {
    padding: 0.75rem;
  }

  /* 7. Reduce bottom margin on create post card */
  .card.mb-lg {
    margin-bottom: 0.75rem;
  }

  /* 8. Tighter avatar text spacing in posts */
  .post-meta {
    gap: 0.5rem;
  }

  /* 9. Final overflow prevention for all elements */
  * {
    max-width: 100% !important;
  }


  html, body {
    overflow-x: hidden !important;
    width: 100% !important;
  }

  .main-content, .feed-container, .post-card, .card {
    overflow-x: hidden !important;
    max-width: 100% !important;
  }
}

/* ===== Home Feed Comments Section ===== */
.post-comments {
  margin-top: 0.56rem;
  padding-top: 0.56rem;
  border-top: 1px solid var(--color-border);
}

.post-comments .comments-list {
  max-height: 400px;
  overflow-y: auto;
  margin-bottom: 0.56rem;
}

.post-comments .comment-item {
  padding: 0.56rem;
  border-bottom: 1px solid var(--color-border);
}

.post-comments .comment-item:last-child {
  border-bottom: none;
}

.post-comments .comment-header {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  margin-bottom: 0.14rem;
}

.post-comments .comment-info {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.14rem;
}

.post-comments .comment-author {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.post-comments .comment-author:hover {
  text-decoration: underline;
}

.post-comments .comment-time {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.post-comments .comment-body p {
  margin: 0;
  line-height: var(--line-height-relaxed);
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.875rem;  /* 14px - Reduced from base size */
}

.comment-options-btn {
  background: none;
  border: none;
  padding: 0.28rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}

.comment-options-btn:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.post-comments .no-comments {
  text-align: center;
  color: var(--color-text-secondary);
  padding: 0.84rem;
  font-style: italic;
  font-size: var(--font-size-sm);
}

.post-comments .comment-form {
  display: flex;
  gap: 0.28rem;
  align-items: flex-end;
}

.post-comments .comment-input {
  flex: 1;
  padding: 0.28rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  resize: vertical;
  min-height: 36px;
  font-family: inherit;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
}

.post-comments .comment-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Load More Comments Button */
.load-more-container {
  display: flex;
  justify-content: center;
  padding: 0.56rem 0;
  margin-top: 0.28rem;
}

.load-more-comments-btn {
  padding: 0.5rem 1rem;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.load-more-comments-btn:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.load-more-comments-btn:active {
  transform: scale(0.98);
}

.load-more-comments-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Mobile optimization for comments */
@media (max-width: 767px) {
  .post-comments .comments-list {
    max-height: 300px;
  }

  .post-comments .comment-form {
    flex-direction: column;
    align-items: stretch;
  }

  .load-more-comments-btn {
    width: 100%;
  }

  .post-comments .comment-form button {
    width: 100%;
  }
}

/* ============================================
   Post Images in Feed
   ============================================ */

.post-images-container {
  width: 100%;
  margin: var(--space-md) 0;
  position: relative;
  max-height: 400px;
  overflow: hidden;
}

.post-images-gallery {
  display: flex;
  gap: var(--space-xs);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
  height: 100%;
}

/* 단일 이미지: 기존 스타일 유지 (100% 폭) */
.post-images-gallery.single-image .post-feed-image {
  width: 100%;
  height: auto;
  max-height: 196px;
  object-fit: cover;
  flex-shrink: 0;
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  background: var(--color-bg-secondary);
}

/* 여러 이미지: 각 이미지가 약 48% 폭 차지 (2개 동시 표시) */
.post-images-gallery.multiple-images .post-feed-image {
  width: calc((100% - var(--space-xs)) / 2);  /* 2개가 한 화면에 */
  min-width: calc((100% - var(--space-xs)) / 2);
  height: 100%;  /* 컨테이너 높이에 맞춤 */
  object-fit: cover;
  flex-shrink: 0;
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  background: var(--color-bg-secondary);
}

.post-images-container .image-counter {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  pointer-events: none;
}

/* Scrollbar for image gallery */
.post-images-gallery::-webkit-scrollbar {
  height: 6px;
}

.post-images-gallery::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-full);
}

.post-images-gallery::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-full);
}

.post-images-gallery::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.5);
}

@media (max-width: 767px) {
  /* 단일 이미지는 기존 비율 유지 */
  .post-images-gallery.single-image .post-feed-image {
    max-height: 147px;  /* 300px → 210px → 147px (70% × 70%) */
  }

  /* 여러 이미지는 더 작게 (2개 동시 표시) */
  .post-images-gallery.multiple-images .post-feed-image {
    height: 105px;  /* 140px에서 모바일용으로 축소 */
    max-height: 105px;
  }
}

/* ============================================
   Mobile Navigation Mode Switching
   ============================================ */