/* =========================================
   THREE-COLUMN LAYOUT
   sidebar(right) | content(center) | seo-panel(left)
   ========================================= */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* =========================================
   SIDEBAR (rightmost in RTL)
   ========================================= */
.app-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--color-surface);
  border-inline-start: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  transition: width 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
}

.sidebar-header {
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

/* Close button — visible only on mobile drawer */
.sidebar-close-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  line-height: 0;
  transition: color 0.15s, background 0.15s;
  flex-shrink: 0;
}

.sidebar-close-btn:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px var(--color-primary-glow);
}

.logo-icon svg {
  width: 18px;
  height: 18px;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.logo-text {
  font-family: 'Sora', sans-serif;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, var(--color-text), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.sidebar-slogan {
  display: none;
  /* Hide slogan to save vertical space */
}

/* Nav */
.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  /* Hide in Firefox */

  /* Stronger scroll shadows to indicate scrollable content above/below */
  background:
    linear-gradient(var(--color-surface) 30%, rgba(255, 255, 255, 0)),
    linear-gradient(rgba(255, 255, 255, 0), var(--color-surface) 70%) 0 100%,
    radial-gradient(farthest-side at 50% 0, rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0)),
    radial-gradient(farthest-side at 50% 100%, rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0)) 0 100%;
  background-repeat: no-repeat;
  background-size: 100% 24px, 100% 24px, 100% 14px, 100% 14px;
  background-attachment: local, local, scroll, scroll;
}

.sidebar-nav::-webkit-scrollbar {
  width: 0;
  /* Hide in Webkit (Chrome, Safari) */
}

/* Scroll indicator overlay styling */
.sidebar-scroll-indicator {
  position: absolute;
  left: 4px;
  right: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5px 8px;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 10;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  background: color-mix(in srgb, var(--color-surface) 82%, transparent);
}

.sidebar-scroll-indicator.top-indicator {
  top: 0;
  transform: translateY(-4px);
}

.sidebar-scroll-indicator.bottom-indicator {
  bottom: 0;
  transform: translateY(4px);
}

.sidebar-scroll-indicator.visible {
  opacity: 1;
  transform: translateY(0);
}

.app-layout.sidebar-collapsed .sidebar-scroll-indicator {
  display: none !important;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  color: var(--color-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  transition: color 0.15s, background 0.15s;
  position: relative;
  flex-shrink: 0;
}

.nav-item:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.nav-item.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 60%;
  width: 3px;
  background: var(--color-primary);
  border-radius: 4px;
}

.nav-item__icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--color-primary);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 16%, transparent), transparent),
    var(--color-surface);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .35),
    0 4px 10px rgba(15, 118, 110, .08);
  flex: 0 0 auto;
  transition: all var(--transition-fast) ease;
}

.nav-item__icon svg {
  width: 15px;
  height: 15px;
  stroke-width: 2;
}

.nav-item.active .nav-item__icon {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  box-shadow: 0 4px 12px var(--color-primary-glow);
}

.nav-item__text {
  overflow: hidden;
  white-space: nowrap;
  transition: opacity 0.18s, width 0.18s;
}

/* Sidebar footer */
.sidebar-footer {
  padding: 12px;
  padding-block: 8px 0;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}

.lang-switcher-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  transition: all 0.15s;
}

.lang-switcher-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  color: var(--color-muted);
  pointer-events: none;
  transition: color 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lang-switcher-icon svg {
  width: 100%;
  height: 100%;
}

html[dir="ltr"] .lang-switcher-icon {
  left: 10px;
}

html[dir="rtl"] .lang-switcher-icon {
  right: 10px;
}

.lang-switcher {
  background-color: transparent;
  border: 1px solid transparent;
  color: var(--color-muted);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 6px 28px 6px 30px;
  cursor: pointer;
  outline: none;
  transition: color 0.2s, background-color 0.2s, border-color 0.2s;
  width: 100%;
  text-align: start;

  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;

  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23888888' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 10px 6px;
}

.lang-switcher:focus {
  color: var(--color-text);
  background-color: var(--color-bg-alt);
}

html[dir="rtl"] .lang-switcher {
  padding: 6px 30px 6px 28px;
  background-position: left 10px center;
}

.lang-switcher-wrapper:hover .lang-switcher-icon,
.lang-switcher-wrapper:focus-within .lang-switcher-icon {
  color: var(--color-text);
}

.lang-switcher-wrapper:hover .lang-switcher {
  color: var(--color-text);
  background-color: var(--color-bg-alt);
}

.collapse-btn,
.theme-toggle {
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: var(--radius-md);
  font-size: 12.5px;
  font-weight: 600;
  transition: all 0.15s;
  width: 100%;
}

.collapse-btn__icon {
  font-size: 12px;
  transition: transform 0.3s;
}

.theme-toggle:hover,
.collapse-btn:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.developer-credit {
  text-align: center;
  margin-top: 6px;
  font-size: 11px;
  color: var(--color-muted);
}

.developer-credit a {
  color: var(--color-muted-light);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.developer-credit a:hover {
  color: var(--color-primary) !important;
  text-decoration: underline !important;
}

/* Collapsed state */
@media (min-width: 961px) {
  .app-layout.sidebar-collapsed .app-sidebar {
    width: var(--sidebar-collapsed-width);
  }

  .app-layout.sidebar-collapsed .logo-text,
  .app-layout.sidebar-collapsed .sidebar-slogan,
  .app-layout.sidebar-collapsed .nav-item__text,
  .app-layout.sidebar-collapsed #theme-toggle-text,
  .app-layout.sidebar-collapsed .collapse-btn__text,
  .app-layout.sidebar-collapsed .app-footer-credit,
  .app-layout.sidebar-collapsed .developer-credit {
    opacity: 0;
    width: 0;
    pointer-events: none;
    display: none;
  }

  .app-layout.sidebar-collapsed .collapse-btn,
  .app-layout.sidebar-collapsed .theme-toggle,
  .app-layout.sidebar-collapsed .lang-switcher-wrapper {
    justify-content: center;
    padding: 8px;
  }

  .app-layout.sidebar-collapsed .lang-switcher-wrapper .lang-switcher-icon {
    position: static;
    transform: none;
    margin: 0;
    width: 16px;
    height: 16px;
  }

  .app-layout.sidebar-collapsed .lang-switcher-wrapper .lang-switcher {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    padding: 0;
  }

  .app-layout.sidebar-collapsed .nav-item {
    justify-content: center;
    padding: 8px;
  }

  .app-layout.sidebar-collapsed .brand-logo {
    justify-content: center;
  }

  .app-layout.sidebar-collapsed .brand-logo-img {
    width: 32px !important;
    height: auto !important;
  }

  .app-layout.sidebar-collapsed .collapse-btn__icon {
    transform: rotate(180deg);
  }
}

/* =========================================
   MAIN WORKSPACE (center)
   ========================================= */
.app-main {
  flex: 1;
  min-width: 0;
  padding: 24px 28px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.main-header,
.active-workspace {
  width: 100%;
  max-width: 1200px;
}

.main-header {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.03);
  border-inline-start: 4px solid var(--color-primary);
}

.main-header-top {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 800;
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 99px;
  border: 1px solid rgba(37, 99, 235, 0.14);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.main-title {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--color-text);
  margin: 0;
}

.main-subtitle {
  font-size: 13.5px;
  color: var(--color-muted);
  font-weight: 500;
  margin: 0;
}

/* =========================================
   FINANCE TOOL HEADER
   compact semantic header for calculator workspace
   ========================================= */

.main-header.finance-tool-header {
  width: 100%;
  max-width: 1200px;
  min-height: 112px;
  margin: 0 0 16px;
  padding: 16px 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(270px, 370px);
  align-items: center;
  gap: 18px;
  position: relative;
  overflow: hidden;
  isolation: isolate;

  background:
    radial-gradient(circle at 88% 12%,
      color-mix(in srgb, var(--color-primary) 10%, transparent),
      transparent 34%),
    linear-gradient(135deg,
      color-mix(in srgb, var(--color-surface) 94%, var(--color-primary-light)),
      var(--color-surface) 62%,
      color-mix(in srgb, var(--color-surface) 90%, var(--color-primary-dark)));
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, var(--color-border));
  border-radius: calc(var(--radius-xl) + 4px);
  border-inline-start: 0;
  box-shadow:
    0 12px 30px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.main-header.finance-tool-header::before {
  content: '';
  position: absolute;
  inset-inline-start: 0;
  inset-block: 14px;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg,
      var(--color-primary),
      var(--color-primary-dark));
  z-index: 2;
}

.main-header.finance-tool-header::after {
  content: '';
  position: absolute;
  inset-inline-end: 18px;
  inset-block-start: 14px;
  width: 170px;
  height: 70px;
  pointer-events: none;
  opacity: .16;
  background-image:
    linear-gradient(color-mix(in srgb, var(--color-primary) 42%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-primary) 42%, transparent) 1px, transparent 1px);
  background-size: 18px 18px;
  mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
  z-index: -1;
}

.finance-tool-header__glow {
  position: absolute;
  inset-inline-end: -70px;
  inset-block-start: -110px;
  width: 250px;
  height: 250px;
  border-radius: 999px;
  background:
    radial-gradient(circle,
      color-mix(in srgb, var(--color-primary) 22%, transparent),
      transparent 68%);
  filter: blur(12px);
  opacity: .75;
  z-index: -2;
  pointer-events: none;
}

/* Main title area */
.finance-tool-header__main {
  min-width: 0;
  display: block;
  position: relative;
  z-index: 1;
}

.finance-tool-header__copy {
  min-width: 0;
}

.finance-tool-header__kicker {
  width: fit-content;
  max-width: 100%;
  margin-bottom: 7px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;

  color: var(--color-primary);
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--color-primary-light) 78%, transparent),
      color-mix(in srgb, var(--color-surface) 70%, transparent));
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);

  font-size: 11px;
  line-height: 1;
  font-weight: 800;
  white-space: nowrap;
}

.finance-tool-header__live-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  border-radius: 999px;
  background: var(--color-primary);
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--color-primary) 14%, transparent),
    0 0 14px color-mix(in srgb, var(--color-primary) 60%, transparent);
}

.finance-tool-header__title {
  margin: 0;
  color: var(--color-text);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.1;
  letter-spacing: -0.5px;
  font-weight: 800;
}

.finance-tool-header__subtitle {
  max-width: 760px;
  margin: 6px 0 0;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.5;
  font-weight: 500;
}

/* Semantic meta strip */
.finance-tool-header__meta {
  min-width: 0;
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.finance-tool-header__count {
  min-height: 74px;
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border-radius: 20px;
  color: #fff;
  background:
    radial-gradient(circle at 25% 20%, rgba(255, 255, 255, .24), transparent 34%),
    linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: 1px solid color-mix(in srgb, var(--color-primary) 38%, transparent);
  box-shadow:
    0 11px 22px var(--color-primary-glow),
    inset 0 1px 0 rgba(255, 255, 255, .22);
}

.finance-tool-header__count strong {
  font-family: 'Sora', sans-serif;
  font-size: 30px;
  line-height: .92;
  font-weight: 800;
  letter-spacing: -1px;
}

.finance-tool-header__count span {
  font-size: 11px;
  line-height: 1;
  font-weight: 800;
  opacity: .92;
}

.finance-tool-header__topics {
  min-height: 74px;
  padding: 10px;
  display: flex;
  align-content: center;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 7px;
  border-radius: 20px;
  border: 1px solid color-mix(in srgb, var(--color-primary) 14%, var(--color-border));
  background:
    linear-gradient(145deg,
      color-mix(in srgb, var(--color-surface) 88%, transparent),
      color-mix(in srgb, var(--color-bg-alt) 78%, transparent));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .04),
    0 9px 20px rgba(0, 0, 0, .03);
}

.finance-tool-header__topics span {
  min-height: 26px;
  padding: 4px 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--color-muted);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  font-size: 10.5px;
  line-height: 1;
  font-weight: 600;
  white-space: nowrap;
}

.finance-tool-header__topics span:nth-last-child(2) {
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary-light) 68%, transparent);
  border-color: color-mix(in srgb, var(--color-primary) 18%, transparent);
}

/* Kill old classes if they are still present in HTML/CSS cache */
.main-header.finance-tool-header .finance-tool-header__meta-card,
.main-header.finance-tool-header .finance-tool-header__meta-stack,
.main-header.finance-tool-header .finance-tool-header__chip,
.main-header.finance-tool-header .tool-hero__visual,
.main-header.finance-tool-header .tool-hero__actions,
.main-header.finance-tool-header .tool-hero__btn {
  display: none;
}

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

@media screen and (max-width: 1300px) {
  .main-header.finance-tool-header {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .finance-tool-header__meta {
    grid-template-columns: 70px minmax(0, 1fr);
  }

  .finance-tool-header__count,
  .finance-tool-header__topics {
    min-height: 58px;
  }

  .finance-tool-header__topics {
    justify-content: flex-start;
  }
}

@media screen and (max-width: 768px) {
  .main-header.finance-tool-header {
    margin-bottom: 12px;
    padding: 14px;
    border-radius: var(--radius-xl);
    gap: 12px;
  }

  .finance-tool-header__kicker {
    margin-bottom: 6px;
    padding: 5px 9px;
    font-size: 10.5px;
  }

  .finance-tool-header__title {
    font-size: clamp(19px, 5vw, 24px);
    letter-spacing: -0.5px;
  }

  .finance-tool-header__subtitle {
    font-size: 12.5px;
    line-height: 1.45;
  }

  .finance-tool-header__meta {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 8px;
  }

  .finance-tool-header__count {
    min-height: 50px;
    border-radius: 16px;
  }

  .finance-tool-header__count strong {
    font-size: 24px;
  }

  .finance-tool-header__count span {
    font-size: 10px;
  }

  .finance-tool-header__topics {
    min-height: 50px;
    padding: 7px;
    border-radius: 16px;
    gap: 6px;
  }

  .finance-tool-header__topics span {
    min-height: 24px;
    padding: 4px 8px;
    font-size: 9.5px;
  }
}

@media screen and (max-width: 560px) {
  .main-header.finance-tool-header {
    padding: 12px;
  }

  .finance-tool-header__kicker {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .finance-tool-header__title {
    font-size: 18px;
    line-height: 1.15;
  }

  .finance-tool-header__subtitle {
    margin-top: 5px;
    font-size: 11.5px;
  }

  .finance-tool-header__meta {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .finance-tool-header__count {
    min-height: 46px;
    padding: 7px 5px;
  }

  .finance-tool-header__count strong {
    font-size: 21px;
  }

  .finance-tool-header__topics {
    min-height: 46px;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .finance-tool-header__topics::-webkit-scrollbar {
    display: none;
  }

  .finance-tool-header__topics span {
    flex: 0 0 auto;
    font-size: 9.5px;
  }
}

@media screen and (max-width: 430px) {
  .finance-tool-header__subtitle {
    display: none;
  }

  .finance-tool-header__meta {
    display: none;
  }
}

/* =========================================
   SEO SIDE PANEL (leftmost in RTL)
   ========================================= */
.seo-side-panel {
  width: var(--seo-panel-width);
  flex-shrink: 0;
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  border-inline-end: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: width var(--duration-slow) var(--ease-out), padding var(--duration-slow) var(--ease-out), opacity var(--duration-slow) var(--ease-out), border-color var(--duration-slow) var(--ease-out);
}

.seo-side-panel::-webkit-scrollbar {
  width: 0;
}

.seo-panel__label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.seo-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  line-height: 0;
  transition: color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);
}

.seo-close-btn:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.seo-close-btn svg {
  width: 16px;
  height: 16px;
  stroke-width: 2.5;
}

/* Floating SEO Open/Toggle Button */
.seo-open-btn {
  display: none;
  /* hidden by default */
  position: fixed;
  top: 50%;
  z-index: 990;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

/* RTL: Float on left edge, rotated 90deg counter-clockwise */
html[dir="rtl"] .seo-open-btn {
  left: 20px;
  right: auto;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: left center;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  border-bottom: none;
}

/* LTR: Float on right edge, rotated 90deg clockwise */
html[dir="ltr"] .seo-open-btn {
  right: 20px;
  left: auto;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: right center;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  border-bottom: none;
}

.seo-open-btn:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
}

.seo-open-btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.seo-open-btn__icon svg {
  width: 16px;
  height: 16px;
  stroke-width: 2;
}

@media (min-width: 961px) {

  /* Hide close button on mobile, show on desktop */
  .seo-close-btn {
    display: inline-flex;
  }

  /* Collapse state for SEO panel */
  .app-layout.seo-collapsed .seo-side-panel {
    width: 0;
    padding-inline: 0;
    opacity: 0;
    border-inline-end-color: transparent;
    pointer-events: none;
    overflow: hidden !important;
  }

  /* Show open button when collapsed */
  .app-layout.seo-collapsed .seo-open-btn {
    display: flex;
  }
}

@media (max-width: 960px) {

  /* Always hide close button & open button on mobile/tablet */
  .seo-close-btn,
  .seo-open-btn {
    display: none !important;
  }
}

/* =========================================
   MOBILE TOP BAR
   ========================================= */
.mobile-top-bar {
  display: none;
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 12, 20, 0.5);
  backdrop-filter: blur(4px);
  z-index: 998;
  display: none;
  opacity: 0;
  transition: opacity 0.22s;
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

/* Scroll to top button */
.scroll-to-top-btn {
  position: fixed;
  bottom: 20px;
  left: 20px;
  /* Default for RTL is bottom-left */
  right: auto;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 996;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

html[dir="ltr"] .scroll-to-top-btn {
  left: auto;
  right: 20px;
  /* LTR position is bottom-right */
}

.scroll-to-top-btn.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-to-top-btn:hover {
  background: var(--color-primary-dark);
  transform: scale(1.08);
  box-shadow: 0 6px 16px rgba(15, 118, 110, 0.4);
}

.scroll-to-top-btn:active {
  transform: scale(0.95);
}

@media (min-width: 961px) {
  .scroll-to-top-btn {
    display: none !important;
  }
}

/* Prevent body scroll when mobile menu is open */
body.no-scroll {
  overflow: hidden !important;
}

/* =========================================
   BOTTOM INTERACTIVE WIDGET CARD
   ========================================= */
.bottom-widget-card {
  background: var(--color-surface-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: var(--transition);
}

.widget-tips-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
}

.widget-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.widget-tip-text {
  font-family: var(--font-family);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-soft);
  margin: 0;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--duration-fast) ease-in-out;
}

.widget-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 16px;
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.widget-action-btn:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.widget-action-btn:active {
  transform: translateY(1px);
}

.widget-divider {
  height: 1px;
  background: var(--color-border);
  width: 100%;
}

.widget-share-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.widget-share-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-muted);
  margin: 0;
}

.widget-share-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;

  gap: 10px;
  width: 100%;
  max-width: 100%;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  gap: 7px;
  padding: 9px 13px;

  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);

  background: var(--color-surface);
  color: var(--color-text);

  font-family: var(--font-family);
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;

  cursor: pointer;
  transition: var(--transition);

  width: auto;
  min-width: 0;
  max-width: max-content;
  flex: 0 1 auto;
}

.share-btn__icon {
  width: 18px;
  height: 18px;
  min-width: 18px;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  flex: 0 0 18px;
  line-height: 0;
}

.share-btn__icon svg {
  width: 18px;
  height: 18px;
  display: block;
  flex: none;
}

.share-btn:hover .share-btn__icon svg {
  transform: scale(1.1);
}

.share-btn__text {
  display: inline-block;
  min-width: 0;
  line-height: 1;
}

.share-btn--whatsapp:hover {
  background: #25D366;
  color: #FFFFFF;
  border-color: #25D366;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
}

.share-btn--telegram:hover {
  background: #0088CC;
  color: #FFFFFF;
  border-color: #0088CC;
  box-shadow: 0 4px 12px rgba(0, 136, 204, 0.2);
}

.share-btn--copy:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.widget-footer {
  text-align: center;
  font-family: var(--font-family);
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 8px;
}

@media (max-width: 960px) {

  .widget-share-buttons {
    justify-content: stretch;
    gap: 8px;
  }

  .bottom-widget-card {
    padding: 20px 16px;
  }

  .share-btn {
    flex: 1 1 calc(50% - 8px);
    max-width: none;
    width: auto;

    padding: 9px 10px;
    font-size: 0.82rem;
  }

  .share-btn--copy {
    flex-basis: 100%;
  }

  .share-btn__icon {
    width: 18px;
    height: 18px;
    min-width: 18px;
    flex-basis: 18px;
  }

  .share-btn__icon svg {
    width: 18px;
    height: 18px;
  }

}