/* ============================================
   MODERN LAYOUT & COMPONENT STYLES
   Navigation, Sidebar, Hero, Content Sections
   ============================================ */

/* ─── TOPBAR / NAVBAR REDESIGN ─── */
/* Topbar hidden — using left sidebar instead */
#topbar-wrapper {
  display: none !important;
}

html[mode="dark"] #topbar-wrapper {
  background: rgba(62, 39, 35, 0.95);
  border-color: #6d4c41;
}

#topbar-wrapper.topbar-down {
  transform: translateY(0);
}

#topbar-wrapper.topbar-up {
  transform: translateY(-100%);
}

#topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0 var(--space-4);
}

#topbar-brand {
  min-width: 180px;
  gap: 0.15rem;
}

#topbar-title {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: #efebe9;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#topbar-subtitle {
  font-size: var(--text-xs);
  color: rgba(239, 235, 233, 0.72);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#site-tabs {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex: 1;
  margin: 0 var(--space-6);
  padding: 0.35rem;
  border-radius: 999px;
  background: rgba(0,0,0,0.12) !important;
  border: 1px solid rgba(255, 255, 255, 0.06) !important;
  overflow-x: auto;
  scrollbar-width: none;
}

#site-tabs {
  position: relative;
  z-index: var(--z-modal);
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
}

#site-tabs::-webkit-scrollbar {
  display: none;
}

.site-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  color: var(--color-white) !important;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition-base);
}

.site-tab:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  transform: translateY(-1px);
}

.site-tab.active {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.95) 0%, rgba(6, 182, 212, 0.95) 100%);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(14, 165, 233, 0.2);
}

#topbar-actions {
  gap: var(--space-2);
}

#breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  flex: 1;
}

#breadcrumb a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

#breadcrumb a:hover {
  color: var(--color-primary-dark);
}

#sidebar-trigger,
#search-trigger {
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  font-size: var(--text-lg);
}

#sidebar-trigger:hover,
#search-trigger:hover {
  color: var(--color-primary);
}

/* ─── SEARCH WRAPPER ─── */
#search-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-bg-lighter);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-fast);
}

#search-wrapper:focus-within {
  border-color: var(--color-primary);
  box-shadow: inset 0 0 0 3px rgba(14, 165, 233, 0.1);
}

#search-input {
  background: transparent;
  border: none;
  outline: none;
  flex: 1;
  color: var(--color-text-primary);
  font-size: var(--text-sm);
}

#search-input::placeholder {
  color: var(--color-text-muted);
}

html[mode="dark"] #search-input {
  color: var(--color-dark-text);
}

#search-cleaner {
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

#search-cleaner:hover {
  color: var(--color-text-secondary);
}

/* ─── GLOBAL SURFACE (LIGHT MAIN) ─── */
body {
  background: #fbf8f2 !important;
  background-color: #fbf8f2 !important;
}

html[mode="dark"] body,
html[mode="light"] body {
  background: #fbf8f2 !important;
  background-color: #fbf8f2 !important;
}

/* ─── SIDEBAR REDESIGN ─── */
#sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 260px;
  height: 100vh;
  background: linear-gradient(180deg, #1e2331 0%, #1a1f2b 100%);
  color: #efebe9;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  padding-bottom: 0;
  z-index: var(--z-fixed);
  transition: transform var(--transition-slow);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
}

#sidebar::-webkit-scrollbar {
  display: none;
}

/* Sidebar vertical tabs */
.sidebar-tabs {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-6);
  margin-top: 0;
}
.sidebar-tab {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-base);
}
.sidebar-tab i { width: 1.3rem; text-align: center; }
.sidebar-tab:hover { background: rgba(255,255,255,0.03); color: var(--color-white); transform: translateX(4px); }
.sidebar-tab.active { background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark)); color: white; box-shadow: 0 8px 18px rgba(2,132,199,0.12); }


html[mode="light"] #sidebar {
  background: linear-gradient(180deg, #1e2331 0%, #1a1f2b 100%);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.2);
  color: #efebe9;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

#sidebar.sidebar-open {
  transform: translateX(0);
}

#nav-wrapper {
  padding-top: var(--space-8);
}

/* Profile Section */
#profile-wrapper {
  padding: var(--space-8) var(--space-6);
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

html[mode="light"] #profile-wrapper {
  border-color: var(--color-border);
}

#avatar {
  margin-bottom: var(--space-4);
}

#avatar img {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-primary);
  object-fit: cover;
  transition: all var(--transition-base);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

#avatar img:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

.site-title {
  margin-bottom: var(--space-2);
}

.site-title a {
  color: white;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  font-family: var(--font-display);
  transition: color var(--transition-fast);
}

html[mode="light"] .site-title a {
  color: var(--color-text-primary);
}

.site-title a:hover {
  color: var(--color-primary);
}

.site-subtitle {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  font-style: italic;
}

html[mode="light"] .site-subtitle {
  color: var(--color-text-secondary);
}

/* Navigation Menu */
.nav {
  list-style: none;
  padding: var(--space-4) 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  color: rgba(255, 255, 255, 0.7);
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  letter-spacing: 0.5px;
  transition: all var(--transition-base);
  border-left: 3px solid transparent;
  text-decoration: none;
}

html[mode="light"] .nav-link {
  color: var(--color-text-secondary);
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(14, 165, 233, 0.1);
  border-left-color: var(--color-primary);
  padding-left: calc(var(--space-6) + 2px);
}

.nav-item.active .nav-link {
  color: var(--color-primary);
  background: rgba(14, 165, 233, 0.15);
  border-left-color: var(--color-primary);
}

/* Sidebar Bottom Icons */
#sidebar .sidebar-bottom {
  position: static;
  min-height: auto;
  margin: 0;
  padding: 2px var(--space-6) var(--space-3) var(--space-6);
  font-size: 1rem;
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  gap: 10px;
  flex-wrap: nowrap !important;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-bottom {
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  gap: 10px;
  flex-wrap: nowrap !important;
  padding: 2px var(--space-6) var(--space-3) var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 0;
  min-height: auto;
}

html[mode="light"] .sidebar-bottom {
  border-top-color: var(--color-border);
}

.sidebar-bottom a {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  border-radius: var(--radius-lg);
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-primary);
  transition: all var(--transition-fast);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.sidebar-bottom a:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

/* ─── MAIN WRAPPER ─── */
#main-wrapper {
  margin-left: 260px;
  padding-top: var(--space-8);
  transition: margin-left var(--transition-slow);
  background: #fbf8f2;
  min-height: 100vh;
}

html[mode="light"] #main-wrapper {
  margin-left: 260px;
  background: #fbf8f2;
}

#main-wrapper,
#main-wrapper #main,
#main-wrapper .container,
#main-wrapper .container-sm,
#main-wrapper .container-lg {
  color: #2f3a46;
}

#main-wrapper p,
#main-wrapper li,
#main-wrapper .content,
#main-wrapper .post-content {
  color: #4b5563;
}

#main-wrapper h1,
#main-wrapper h2,
#main-wrapper h3,
#main-wrapper h4,
#main-wrapper h5,
#main-wrapper h6 {
  color: #273444;
}

#main {
  min-height: calc(100vh - 112px);
}

/* ─── BACK TO TOP BUTTON ─── */
#back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
  border: none;
}

#back-to-top:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

#back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ─── FOOTER ─── */
footer {
  background: #5d4037;
  border-top: 1px solid #8d6e63;
  padding: var(--space-8) var(--space-6);
  margin-top: var(--space-16);
  font-size: var(--text-sm);
}

html[mode="dark"] footer {
  background: #4e342e;
  border-top-color: #6d4c41;
}

footer a {
  color: #0ea5e9;
}

.footer-left,
.footer-right {
  flex: 1;
}

.footer-left {
  text-align: left;
}

.footer-right {
  text-align: right;
}

footer p {
  margin-bottom: 0;
  color: #efebe9;
}

html[mode="dark"] footer p {
  color: #efebe9;
  opacity: 0.9;
}

/* ─── HERO SECTION ─── */
.hero {
  padding: var(--space-16) var(--space-6);
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 4rem);
  margin-bottom: var(--space-4);
  animation: slideInDown var(--transition-slow) ease-out;
}

.hero p {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  animation: slideInUp var(--transition-slow) ease-out 0.1s both;
}

html[mode="dark"] .hero p {
  color: var(--color-dark-text);
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  animation: slideInUp var(--transition-slow) ease-out 0.2s both;
}

/* ─── CONTENT SECTIONS ─── */
.section-content {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

/* ─── RESPONSIVE DESIGN ─── */
@media (max-width: 1024px) {
  #topbar-wrapper {
    left: 0;
    width: 100%;
  }

  #topbar {
    flex-wrap: wrap;
    justify-content: center;
    row-gap: var(--space-3);
  }

  #topbar-brand {
    order: 1;
    width: 100%;
    text-align: center;
    align-items: center;
  }

  #site-tabs {
    order: 3;
    width: 100%;
    margin: 0;
    justify-content: flex-start;
  }

  #topbar-actions {
    order: 2;
    margin-left: auto;
  }

  #sidebar {
    transform: translateX(-100%);
    width: 280px;
  }

  #sidebar.sidebar-open {
    transform: translateX(0);
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.15);
  }

  #main-wrapper {
    margin-left: 0;
    padding-top: 152px;
  }

  #main {
    min-height: calc(100vh - 152px);
  }

  #mask {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: var(--z-modal-backdrop);
  }

  #mask.show {
    display: block;
  }
}

@media (max-width: 768px) {
  #topbar {
    gap: var(--space-2);
  }

  #topbar-brand {
    align-items: flex-start;
    text-align: left;
  }

  #breadcrumb {
    display: none;
  }

  #topbar-title {
    font-size: var(--text-base);
  }

  #topbar-subtitle {
    font-size: 0.65rem;
  }

  .site-tab {
    padding: 0.65rem 0.85rem;
    font-size: var(--text-xs);
  }

  #search-wrapper {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    margin: 0 var(--space-4);
    width: auto;
  }

  #search-wrapper.show {
    display: flex;
  }

  #search-cancel {
    cursor: pointer;
    color: var(--color-primary);
    font-size: var(--text-sm);
  }

  .hero {
    padding: var(--space-12) var(--space-4);
  }

  .hero h1 {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }

  .hero p {
    font-size: var(--text-lg);
  }

  .footer-left,
  .footer-right {
    text-align: center;
  }

  footer {
    padding: var(--space-6) var(--space-4);
  }
}

@media (max-width: 480px) {
  #topbar-wrapper {
    padding: var(--space-3) 0;
  }

  #topbar {
    gap: var(--space-2);
  }

  #sidebar {
    width: 240px;
  }

  .hero {
    padding: var(--space-8) var(--space-4);
  }

  .hero h1 {
    font-size: clamp(1.5rem, 5vw, 2rem);
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  #back-to-top {
    width: 45px;
    height: 45px;
    bottom: var(--space-4);
    right: var(--space-4);
  }
}