/* =========================================
   base.css — Design tokens, resets, layout, navigation
   ========================================= */

:root {
  --bg-color: #fdfbf7;
  --element-bg: #f5efe6;
  --element-hover: #ebe0d0;
  --text-primary: #2c2420;
  --text-secondary: #5d544f;
  --text-muted: #9ca3af;
  --text-highlight: #78350f;
  --border-color: rgba(0, 0, 0, 0.06);
  --modal-bg-glass: rgba(255, 255, 255, 0.92);
  --modal-text-main: #1a1a1a;
  --modal-text-sub: #8e8e93;
  --p-grad: linear-gradient(135deg, #ff5f6d 0%, #ffc371 100%);
  --e-grad: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
  --n-grad: linear-gradient(135deg, #bdc3c7 0%, #2c3e50 100%);
  --brand-glow: linear-gradient(135deg, #00d2ff 0%, #92fe9d 100%);
  --premium-grad: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --ion-anim-play-state: running;
  --global-nav-scale: 1;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

html {
  overscroll-behavior: none;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family:
    "Inter",
    -apple-system,
    sans-serif;
  /* Use 100dvh so Safari address bar does not cause jumping layout */
  height: 100dvh;
  width: 100vw;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior: none;
  padding: 0;
  margin: 0;
}

/* Periodic table page: centered when fits, scrollable with preserved gutters */

/* Screen-reader-only utility (SEO / accessibility) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.blank-page {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-color);
  z-index: 2000;
  display: none;
  align-items: flex-start; /* Prevent vertical center clipping on overflow */
  justify-content: center;
  padding-top: 60px;
}

.blank-page.active {
  display: flex;
}

.blank-page-content {
  width: 100%;
  height: 100%;
  padding: 40px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
}

/* Main container - full viewport, single layout mode */
#main-container {
  height: 100%;
  min-width: 1280px;
  padding: 80px 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  /* Start from top to prevent clipping, centering handled by JS/Padding */
  overflow: hidden;
  box-sizing: border-box;
}

/* Fix Worksheet Page Padding */
.worksheet-generator-page {
  padding-top: 40px;
}

/* =========================================
   Global Fixed Navigation Pill
   ========================================= */
.global-nav {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 24px);
  /* no max-width — stretch full width */
  height: calc(56px * var(--global-nav-scale));
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: calc(12px * var(--global-nav-scale));
  justify-content: space-between;
  border-radius: calc(28px * var(--global-nav-scale));
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.06),
    0 1px 2px rgba(0, 0, 0, 0.04);
  padding: 0 calc(20px * var(--global-nav-scale));
  transition:
    height 0.3s ease,
    padding 0.3s ease,
    top 0.3s ease,
    border-radius 0.3s ease;
}


/* =========================================
   窗口变矮时 - 缩小元素内容
   ========================================= */
@media (max-height: 700px) {

  /* Ion 页面 - spacing now on .ions-container */
  .ions-container {
    padding-top: 70px;
  }

  .ion-element .name {
    display: none !important;
  }
}



@media (max-height: 500px) {
  .ion-element {
    min-height: 35px;
  }
}

/* 左侧品牌区 */
.nav-brand-section {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: calc(10px * var(--global-nav-scale));
  flex: 1;
  min-width: 0;
}

/* Logo */
.nav-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo {
  width: calc(32px * var(--global-nav-scale));
  height: calc(32px * var(--global-nav-scale));
  transition: transform 0.3s ease;
}

.nav-logo-link:hover .nav-logo {
  transform: scale(1.1) rotate(-5deg);
}

.nav-brand {
  display: flex;
  align-items: center;
  font-size: calc(1.25rem * var(--global-nav-scale));
  font-weight: 700;
  color: #1d1d1f;
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.nav-brand:hover {
  opacity: 0.7;
}

/* 中间区域：版本 + 导航胶囊 */
.nav-center-group {
  display: flex;
  align-items: center;
  gap: calc(10px * var(--global-nav-scale));
  flex-shrink: 0;
}

.global-nav-pill {
  display: flex;
  justify-content: center;
  gap: calc(4px * var(--global-nav-scale));
  background: rgba(0, 0, 0, 0.04);
  padding: calc(4px * var(--global-nav-scale));
  border-radius: calc(22px * var(--global-nav-scale));
  flex-shrink: 0;
  position: relative;
}

/* Sliding pill indicator */
.nav-pill-slider {
  position: absolute;
  top: calc(4px * var(--global-nav-scale));
  left: 0;
  height: calc(100% - (8px * var(--global-nav-scale)));
  border-radius: calc(18px * var(--global-nav-scale));
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    width 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 0;
  pointer-events: none;
}

.nav-pill-btn {
  padding: calc(8px * var(--global-nav-scale)) calc(20px * var(--global-nav-scale));
  border: none;
  border-radius: calc(18px * var(--global-nav-scale));
  background: transparent;
  color: #444;
  font-size: calc(0.9rem * var(--global-nav-scale));
  font-weight: 600;
  line-height: 1.05;
  cursor: pointer;
  transition: color 0.25s ease;
  white-space: nowrap;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(36px * var(--global-nav-scale));
  min-width: calc(74px * var(--global-nav-scale));
  text-align: center;
  z-index: 1;
}

.nav-pill-btn:hover:not(.active) {
  color: #000;
}

.nav-pill-btn.active {
  color: #1d1d1f;
}

/* Unit settings buttons in settings panel (uses slider animation) */
.unit-setting-btn.active {
  color: #1d1d1f !important;
}

.sv-nav-pill-slider {
  position: absolute;
  top: 4px;
  left: 0;
  height: calc(100% - 8px);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  opacity: 0;
  z-index: 0;
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              width 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.2s ease;
}

/* =========================================
   右侧区域：建议输入框 + GitHub
   ========================================= */
.nav-right-section {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: calc(12px * var(--global-nav-scale));
  flex: 1;
  min-width: 0;
}

/* ── Language Dropdown ── */
.lang-dropdown {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.lang-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: calc(5px * var(--global-nav-scale));
  height: calc(34px * var(--global-nav-scale));
  padding: 0 calc(14px * var(--global-nav-scale)) 0 calc(13px * var(--global-nav-scale));
  border: none;
  border-radius: calc(18px * var(--global-nav-scale));
  background: rgba(0, 0, 0, 0.04);
  color: #555;
  font-size: calc(0.85rem * var(--global-nav-scale));
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 0.5px 1px rgba(0, 0, 0, 0.04);
  transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-family: inherit;
  letter-spacing: -0.01em;
}

.lang-dropdown-toggle:hover {
  color: #1d1d1f;
  background: rgba(0, 0, 0, 0.07);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.lang-dropdown-toggle:active {
  transform: scale(0.96);
  background: rgba(0, 0, 0, 0.09);
}

.lang-dropdown.open .lang-dropdown-toggle {
  color: #1d1d1f;
  background: rgba(0, 0, 0, 0.07);
}

.lang-globe-icon {
  color: currentColor;
  flex-shrink: 0;
}

.lang-chevron {
  color: currentColor;
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.2s ease;
}

.lang-dropdown.open .lang-chevron {
  transform: rotate(180deg);
  color: #374151;
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 148px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(248, 248, 250, 0.93) 100%);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.14), 0 4px 12px rgba(0, 0, 0, 0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.97);
  transition: opacity 0.2s ease,
              visibility 0.2s ease,
              transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 10002;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lang-dropdown.open .lang-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 9px 12px;
  border: none;
  border-radius: 9px;
  background: none;
  text-align: left;
  font-size: 13px;
  font-weight: 550;
  color: #2f3136;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  font-family: inherit;
  white-space: nowrap;
}

.lang-option:hover {
  background: rgba(0, 0, 0, 0.055);
  color: #15161a;
}

.lang-option:not(:last-child) {
  margin-bottom: 3px;
}

.lang-option.active {
  background: rgba(0, 0, 0, 0.09);
  color: #111827;
  font-weight: 650;
}

.lang-option:focus-visible,
.lang-dropdown-toggle:focus-visible {
  outline: 2px solid rgba(0, 0, 0, 0.25);
  outline-offset: 2px;
}

/* ---- Element Search ---- */
.element-search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  max-width: calc(200px * var(--global-nav-scale));
  width: 100%;
}

.element-search-icon {
  position: absolute;
  left: calc(11px * var(--global-nav-scale));
  pointer-events: none;
  color: #86868b;
  flex-shrink: 0;
  transition: color 0.2s ease;
}

.element-search-wrapper:focus-within .element-search-icon {
  color: #007aff;
}

.element-search-input {
  width: 100%;
  height: calc(34px * var(--global-nav-scale));
  padding: 0 calc(12px * var(--global-nav-scale)) 0 calc(32px * var(--global-nav-scale));
  border: none;
  border-radius: calc(18px * var(--global-nav-scale));
  background: rgba(0, 0, 0, 0.04);
  font-size: calc(13px * var(--global-nav-scale));
  font-family: inherit;
  color: #1d1d1f;
  outline: none;
  transition: background 0.25s ease, box-shadow 0.25s ease, width 0.3s ease;
}

.element-search-input::placeholder {
  color: #86868b;
  font-weight: 400;
}

.element-search-input:focus {
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.25);
}

/* Dropdown results panel */
.element-search-results {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 280px;
  max-height: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12),
              0 4px 12px rgba(0, 0, 0, 0.06),
              inset 0 0 0 0.5px rgba(255, 255, 255, 0.4);
  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.2s ease,
              transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 10001;
  padding: 0;
}

.element-search-results.visible {
  max-height: 400px;
  overflow-y: auto;
  opacity: 1;
  transform: translateY(0) scale(1);
  padding: 5px;
}

.element-search-results::-webkit-scrollbar {
  width: 4px;
}
.element-search-results::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.12);
  border-radius: 2px;
}

.element-search-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 7px 10px;
  border-radius: 11px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
  user-select: none;
}

.element-search-item:hover,
.element-search-item.active {
  background: rgba(0, 0, 0, 0.05);
}

.element-search-item.active {
  background: rgba(0, 122, 255, 0.08);
}

.element-search-item-symbol {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1;
  letter-spacing: -0.02em;
  position: relative;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}



.element-search-item-number {
  position: absolute;
  top: 3px;
  left: 4px;
  font-size: 8px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1;
}

.element-search-item-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.element-search-item-name {
  font-size: 13.5px;
  font-weight: 600;
  color: #1d1d1f;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.01em;
}

.element-search-item-name mark {
  background: rgba(0, 122, 255, 0.15);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}

.element-search-item-detail {
  font-size: 11px;
  color: #86868b;
  letter-spacing: -0.01em;
}

.element-search-empty {
  padding: 20px 12px;
  text-align: center;
  font-size: 13px;
  color: #86868b;
}

/* GitHub Icon Link */
.nav-github-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1d1d1f;
  opacity: 0.5;
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.nav-github-link:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* Navigation Hiding Logic */
body.hide-nav .global-nav {
  transform: translate(-50%, -150%) !important;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

body.hide-nav .floating-about-btn {
  transform: translateY(150%) !important;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#settings-page.active ~ .floating-about-btn {
  transform: translateY(150%);
  opacity: 0;
  pointer-events: none;
}

/* ========================================\n   Copyright Notice - Bottom Left\n   ======================================== */
.copyright-notice {
  position: fixed;
  bottom: 12px;
  left: 24px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  opacity: 0.45;
  z-index: 9998;
  pointer-events: none;
  user-select: none;
  letter-spacing: 0.02em;
  transition: opacity 0.3s ease;
}

/* Hide copyright when modals are active */
body.hide-nav .copyright-notice {
  opacity: 0;
}

#settings-page.active ~ .copyright-notice {
  opacity: 0;
}

/* =========================================
   Version Dropdown (Nav-integrated, Left of Pill)
   ========================================= */
.version-dropdown {
  position: relative;
  flex-shrink: 0;
}

.version-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: calc(5px * var(--global-nav-scale));
  padding: calc(7px * var(--global-nav-scale)) calc(14px * var(--global-nav-scale)) calc(7px * var(--global-nav-scale)) calc(13px * var(--global-nav-scale));
  border: none;
  border-radius: calc(18px * var(--global-nav-scale));
  background: rgba(0, 0, 0, 0.04);
  color: #555;
  font-size: calc(0.82rem * var(--global-nav-scale));
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  white-space: nowrap;
  font-family: inherit;
  letter-spacing: -0.01em;
  box-shadow: 0 0.5px 1px rgba(0, 0, 0, 0.04);
}

.version-dropdown-toggle:hover {
  color: #1d1d1f;
  background: rgba(0, 0, 0, 0.07);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.version-dropdown-toggle:active {
  transform: scale(0.96);
  background: rgba(0, 0, 0, 0.09);
}

.version-chevron {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  opacity: 0.45;
  margin-top: 1px;
}

.version-dropdown.open .version-chevron {
  transform: rotate(180deg);
  opacity: 0.7;
}

.version-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px) scale(0.92);
  min-width: calc(100% + 16px);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(248, 248, 250, 0.93) 100%);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  box-shadow:
    0 14px 38px rgba(0, 0, 0, 0.14),
    0 4px 12px rgba(0, 0, 0, 0.08);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
    visibility 0.2s;
  z-index: 10001;
}

.version-dropdown.open .version-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}

.version-dropdown-option {
  display: block;
  width: 100%;
  padding: calc(8px * var(--global-nav-scale)) calc(14px * var(--global-nav-scale));
  border: none;
  border-radius: 10px;
  background: transparent;
  color: #bbb;
  font-size: calc(0.82rem * var(--global-nav-scale));
  font-weight: 600;
  cursor: default;
  transition: all 0.15s ease;
  white-space: nowrap;
  text-align: center;
  font-family: inherit;
  letter-spacing: -0.01em;
}

.version-dropdown-option:hover {
  background: rgba(0, 0, 0, 0.03);
  color: #aaa;
}

.version-dropdown-option:active {
  background: rgba(0, 0, 0, 0.10);
}

@media (max-width: 1500px) {
  :root {
    --global-nav-scale: 0.94;
  }
}

@media (max-width: 1360px) {
  :root {
    --global-nav-scale: 0.88;
  }
}

/* =========================================
   Table Version-Switch Transition
   ========================================= */
.periodic-table.version-switching-out {
  animation: versionFadeOut 0.3s ease forwards;
}

.periodic-table.version-switching-in {
  animation: versionFadeIn 0.35s ease forwards;
}

@keyframes versionFadeOut {
  0% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }

  100% {
    opacity: 0;
    transform: scale(0.98);
    filter: blur(4px);
  }
}

@keyframes versionFadeIn {
  0% {
    opacity: 0;
    transform: scale(0.98);
    filter: blur(4px);
  }

  100% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

body.hide-nav .version-dropdown {
  display: none;
}

/* =========================================
   Desktop Only Block (Mobile Fallback)
   ========================================= */
.desktop-only-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-color);
  z-index: 999999;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.desktop-only-content {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.6));
  border: 1px solid rgba(0, 0, 0, 0.03);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02), inset 0 2px 4px rgba(255, 255, 255, 0.8);
  padding: 3rem 2.5rem;
  border-radius: 24px;
  max-width: 440px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.desktop-only-icon {
  width: 64px;
  height: 64px;
  color: #1d1d1f;
  margin-bottom: 1.5rem;
  opacity: 0.85;
}

.desktop-only-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #1d1d1f;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.desktop-only-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.desktop-only-btn {
  background: #1d1d1f;
  color: white;
  border: none;
  padding: 14px 28px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.desktop-only-btn:active {
  transform: scale(0.95);
}

/* =========================================
   Responsive Navigation — Progressive Hiding (JS-controlled)
   ========================================= */
.nav-hide-brand .nav-brand {
  display: none !important;
}

/* =========================================
   Worksheet Preview Header — Responsive Wrap
   ========================================= */
@media (max-width: 1100px) {
  .preview-header {
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
  }

  .preview-tabs,
  .export-buttons {
    justify-content: center;
  }
}

/* =========================================
   Settings Page — Premium 3-column layout
   ========================================= */

/* Full-viewport wrapper — NO scroll */
#settings-page {
  position: relative;
  align-items: stretch;
  justify-content: stretch;
  height: 100%;
  overflow: hidden;
}

#settings-page::before {
  content: "";
  position: absolute;
  top: 10%;
  left: 20%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle at center, rgba(102, 126, 234, 0.12) 0%, rgba(236, 72, 153, 0.08) 40%, transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  animation: settingsAmbient 15s ease-in-out infinite alternate;
}

#settings-page::after {
  content: "";
  position: absolute;
  bottom: -10%;
  right: 15%;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle at center, rgba(16, 185, 129, 0.08) 0%, rgba(59, 130, 246, 0.1) 40%, transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  animation: settingsAmbientReverse 20s ease-in-out infinite alternate;
}

@keyframes settingsAmbient {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-10%, 10%) scale(1.1); }
}

@keyframes settingsAmbientReverse {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(10%, -10%) scale(1.2); }
}

.settings-viewport {
  width: 100%;
  max-width: min(1440px, calc(100vw - 32px));
  height: 100%;
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(360px, 1.3fr) minmax(280px, 1fr);
  grid-template-rows: auto;
  grid-template-areas: "sidebar main changelog";
  justify-content: center;
  align-items: stretch;
  gap: 18px 28px;
  padding: 30px 28px 88px;
  margin: 0 auto;
  box-sizing: border-box;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.settings-viewport::-webkit-scrollbar {
  display: none;
}

/* ── Left sidebar ── */
.sv-sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 16px;
  min-width: 0;
  align-self: stretch;
  overflow: visible;
  height: 100%;
}

.sv-sidebar-footer {
  margin-top: auto;
  padding: 18px 16px 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  font-family: inherit;
}

.sv-sidebar-footer .lang-dropdown-toggle {
  height: 38px;
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 19px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.sv-sidebar-footer .lang-dropdown-toggle:hover {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.15);
  color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.04);
}

.sv-sidebar-footer .lang-dropdown-menu {
  bottom: 100%;
  top: auto !important;
  left: 0 !important;
  right: auto !important;
  margin-bottom: 12px;
  margin-top: 0 !important;
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  min-width: 200px;
}

.footer-separator {
  width: 1px;
  height: 20px;
  background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.06), transparent);
}

.sv-footer-discord {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 38px;
  background: #5865F2;
  border-radius: 19px;
  color: white;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(88, 101, 242, 0.3);
  text-decoration: none;
  line-height: 0;
}

.sv-footer-discord svg {
  display: block;
}

.sv-footer-discord:hover {
  background: #4752C4;
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 6px 16px rgba(88, 101, 242, 0.4);
}

.sv-footer-reddit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 38px;
  background: #FF4500;
  border-radius: 19px;
  color: white;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(255, 69, 0, 0.3);
  text-decoration: none;
  line-height: 0;
}

.sv-footer-reddit svg {
  display: block;
}

.sv-footer-reddit:hover {
  background: #E03D00;
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 6px 16px rgba(255, 69, 0, 0.4);
}

/* ── Blur effect when lang menu is open ── */

body.lang-menu-blur #page-settings .sv-main,
body.lang-menu-blur #page-settings .sv-changelog {
  filter: blur(2.5px);
  opacity: 0.8;
  pointer-events: none;
}

body.lang-menu-blur #page-settings .sv-sidebar > section,
body.lang-menu-blur #page-settings .sv-sidebar > .sv-links-group {
  filter: blur(1.5px);
  opacity: 0.7;
  pointer-events: none;
}

#page-settings .sv-main,
#page-settings .sv-changelog,
#page-settings .sv-sidebar > section,
#page-settings .sv-links-group {
  transition: filter 0.4s cubic-bezier(0.2, 0, 0.2, 1), opacity 0.4s ease;
}

.sv-version-tag {
  margin-left: auto;
  font-size: 0.68rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0.45;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.sv-links-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sv-link-card-about .sv-link-card-icon {
  background: rgba(59, 130, 246, 0.12);
  color: #3b82f6;
}

.sv-link-card-discord .sv-link-card-icon {
  background: rgba(88, 101, 242, 0.12);
  color: #5865f2;
}

.sv-card-anim {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 240px;
}

.sv-card-anim .sv-anim-controls {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  padding: 10px 0;
}

/* ── Center main area ── */
.sv-main {
  grid-area: main;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 16px;
  width: 100%;
  max-width: none;
  justify-self: stretch;
}

.sv-card-suggest {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.sv-card-suggest .sv-suggest-row {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

#settings-suggestion-input {
  flex-grow: 1;
  min-height: 120px;
}

/* ── Changelog overrides ── */
.sv-changelog {
  grid-area: changelog;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: visible;
}
.sv-changelog-list {
  flex: 1;
  overflow-y: auto;
}

.sv-link-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 18px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: all 0.25s cubic-bezier(0.25, 1, 0.5, 1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02), inset 0 2px 4px rgba(255, 255, 255, 0.8);
  font-family: inherit;
  text-align: left;
}

.sv-link-card:hover {
  background: rgba(255, 255, 255, 1);
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05), inset 0 2px 4px rgba(255, 255, 255, 1);
  border-color: rgba(0, 0, 0, 0.06);
}

.sv-link-card:active {
  transform: scale(0.97);
}

.sv-link-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #f8f9fa;
  color: #343a40;
  flex-shrink: 0;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05), inset 0 2px 5px rgba(0, 0, 0, 0.02), 0 2px 6px rgba(0, 0, 0, 0.03);
}

.sv-icon-warm {
  background: rgba(255, 140, 50, 0.1);
  color: #d97706;
}

.sv-icon-blue {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
}

@keyframes coffeeShimmer {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.sv-link-card-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.sv-link-card-title {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.sv-link-card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

.sv-link-arrow {
  margin-left: auto;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  flex-shrink: 0;
  color: var(--text-muted);
}

.sv-link-card:hover .sv-link-arrow {
  opacity: 0.45;
  transform: translateX(2px);
}

.sv-link-card-github .sv-link-card-icon {
  background: rgba(36, 41, 47, 0.06);
  color: #24292f;
}

.sv-link-card-coffee .sv-link-card-icon {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
}

.sv-link-card-about .sv-link-card-icon {
  background: rgba(59, 130, 246, 0.12);
  color: #3b82f6;
}


/* Shared card base */
.sv-card {
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.03),
    0 8px 24px rgba(0, 0, 0, 0.06);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: box-shadow 0.25s ease;
}

.sv-card:hover {
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.04),
    0 12px 32px rgba(0, 0, 0, 0.09);
}

.sv-card-icon-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sv-card-icon-row h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.sv-icon-circle {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-primary);
}

.sv-icon-purple {
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
}

/* Animation controls */
.sv-anim-controls {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sv-anim-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sv-anim-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}

.sv-speed-val {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-left: 4px;
}

.sv-play-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1.5px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.sv-play-btn .icon-play {
  display: none;
}

.sv-play-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.14);
}

.sv-play-btn:active {
  transform: scale(0.92);
}

/* Range slider */
.sv-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  max-width: 240px;
  height: 5px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.08);
  outline: none;
}

.sv-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #1d1d1f;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  transition: transform 0.12s ease;
}

.sv-slider::-webkit-slider-thumb:hover {
  transform: scale(1.18);
}

.sv-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #1d1d1f;
  border: none;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

/* Suggestion card */
.sv-card-suggest {
  gap: 12px;
}

.sv-suggest-hint {
  font-size: 0.89rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin: -4px 0 0;
}

/* Prompt chips */
.sv-suggest-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sv-chip {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1.5px solid rgba(0, 0, 0, 0.07);
  background: rgba(255, 255, 255, 0.5);
  color: var(--text-secondary);
  font-size: 0.84rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.sv-chip:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.2);
  color: #111827;
}

.sv-chip.active {
  background: #111827;
  border-color: #111827;
  color: #fff;
}

.sv-suggest-row {
  position: relative;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 20px;
  transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02), inset 0 2px 4px rgba(255, 255, 255, 0.6);
}

.sv-suggest-row:focus-within {
  border-color: rgba(0, 0, 0, 0.15);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06), inset 0 2px 4px rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.95);
  transform: translateY(-1px);
}

.sv-suggest-input {
  width: 100%;
  padding: 16px 18px 8px 18px;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  outline: none;
  resize: none;
  min-height: 80px;
  max-height: 300px;
  line-height: 1.55;
  box-sizing: border-box;
}

.sv-suggest-input::placeholder {
  color: var(--text-muted);
}

.sv-suggest-actions-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px 14px 18px;
}

.sv-suggest-send {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 24px;
  border-radius: 20px;
  border: none;
  background: #111827;
  color: #fff;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
  white-space: nowrap;
  overflow: hidden;
}

/* Global scale effect for interactive buttons */
.nav-pill-btn:active,
.sv-chip:active,
.option-btn:active,
.preview-tab:active,
.generate-btn:active,
.export-btn:active,
.modal-help-btn:active,
.sv-danger-btn:active {
  transform: scale(0.95);
  transition: transform 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

.sv-send-content-default {
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}

.sv-send-content-success {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -20%) scale(0.8);
  opacity: 0;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sv-suggest-send:hover {
  background: #1f2937;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
}

.sv-suggest-send:active {
  transform: scale(0.95);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  transition-duration: 0.1s;
}

.sv-suggest-send.sent {
  background: #10b981;
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.2);
}

.sv-suggest-send.sent .sv-send-content-default {
  transform: translateY(-20px);
  opacity: 0;
}

.sv-suggest-send.sent .sv-send-content-success {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

body.reduce-motion * {
  animation-duration: 0.001ms !important;
  transition-duration: 0.001ms !important;
}

/* ── Preferences Toggles & Buttons ── */
.sv-toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.sv-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.sv-toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0,0,0,0.12);
  transition: background-color 0.3s;
  border-radius: 24px;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.08);
}

.sv-toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.sv-toggle input:checked + .sv-toggle-slider {
  background-color: #10b981;
}

.sv-toggle input:checked + .sv-toggle-slider:before {
  transform: translateX(20px);
}

.sv-danger-btn {
  background: rgba(239, 68, 68, 0.08);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.sv-danger-btn:hover {
  background: #ef4444;
  color: #fff;
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 4px 10px rgba(239, 68, 68, 0.25);
}

.sv-danger-btn:active {
  transform: scale(0.96) translateY(0);
}

.sv-suggest-status {
  font-size: 0.84rem;
  font-weight: 500;
  min-height: 1em;
  transition: all 0.2s ease;
  pointer-events: none;
}

.sv-suggest-status.success {
  color: #16a34a;
}

/* ── Right changelog column — wider ── */
.sv-changelog {
  grid-area: changelog;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  align-self: stretch;
  padding: 22px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(20px) saturate(165%);
  -webkit-backdrop-filter: blur(20px) saturate(165%);
  border: 1px solid rgba(255, 255, 255, 0.52);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.03),
    0 8px 24px rgba(0, 0, 0, 0.06);
}

.sv-changelog-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.sv-changelog-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 8px;
  flex: 1 1 0;
  min-height: 0;
}

.sv-changelog-list::-webkit-scrollbar {
  width: 3px;
}

.sv-changelog-list::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 2px;
}

.changelog-entry {
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.changelog-entry:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.changelog-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.changelog-version {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.04);
  padding: 3px 10px;
  border-radius: 6px;
}

.changelog-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

.changelog-items {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.changelog-items li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  padding-left: 14px;
  position: relative;
}

.changelog-items li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--text-muted);
  font-weight: 700;
}

/* Settings-specific layout tuning */
.sv-unit-controls {
  margin-top: 12px;
  gap: 0;
}

.sv-unit-row + .sv-unit-row {
  margin-top: 16px;
}

.sv-unit-row {
  justify-content: space-between !important;
  align-items: center !important;
  gap: 14px;
  flex-wrap: wrap;
}

.sv-unit-icon {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

.sv-unit-label {
  font-weight: 500;
}

.sv-unit-pill {
  margin-left: auto;
  max-width: 100%;
  background: rgba(0, 0, 0, 0.04);
  padding: 4px;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* ── Responsive: desktop -> tablet -> stacked ── */
@media (max-width: 1500px) {
  .settings-viewport {
    max-width: min(1400px, calc(100vw - 28px));
    grid-template-columns: minmax(240px, 1fr) minmax(340px, 1.4fr) minmax(260px, 1fr);
    grid-template-areas: "sidebar main changelog";
    gap: 20px 24px;
    padding: 26px 24px 84px;
  }

  .sv-main {
    max-width: none;
    justify-self: stretch;
  }

  .sv-sidebar {
    max-width: none;
  }

  .sv-link-card {
    min-height: 80px;
    padding: 17px 18px;
  }
}

@media (max-width: 1180px) {
  .settings-viewport {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "sidebar main"
      "changelog main";
    gap: 20px;
    padding: 24px 20px 88px;
  }

  .sv-sidebar {
    display: flex;
    max-width: 100%;
  }

  .sv-main {
    max-width: 100%;
  }

  .sv-changelog {
    display: flex;
  }

  .sv-link-card {
    min-height: auto;
  }
}

@media (max-height: 820px) {
  .settings-viewport {
    padding-bottom: 56px;
  }
}

@media (max-width: 900px) {
  .settings-viewport {
    grid-template-areas:
      "main"
      "changelog";
  }

  .sv-sidebar {
    display: none;
  }
}

@media (max-width: 640px) {
  .sv-card {
    padding: 20px;
  }

  .sv-unit-row {
    align-items: stretch !important;
  }

  .sv-unit-pill {
    width: 100%;
    justify-content: flex-start;
  }

  .sv-unit-pill .nav-pill-btn {
    flex: 1 1 0;
    min-width: 0;
    text-align: center;
    padding: 8px 12px;
  }

  .sv-suggest-row {
    flex-direction: column;
    align-items: stretch;
  }

  .sv-suggest-send {
    width: 100%;
    min-width: 0;
  }

  .sv-suggest-actions-bottom {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
    padding: 12px 14px 14px 14px;
  }

  .sv-suggest-status {
    text-align: center;
  }
}

/* =========================================
   Floating About Button (existing style, unchanged)
   ========================================= */
/* Settings Pills Custom Styles */
.sv-pill-group {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 3px;
    border-radius: 9999px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03), inset 0 2px 5px rgba(255,255,255,0.7);
    border: 1px solid rgba(255,255,255,0.6);
    position: relative;
}
.sv-pill-btn {
    padding: 6px 16px;
    border: none;
    border-radius: 9999px;
    background: transparent;
    color: #444;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.25s ease;
    white-space: nowrap;
    position: relative;
    z-index: 1;
}
.sv-pill-btn:hover:not(.active) {
    color: #000;
}
.sv-pill-btn.active {
    color: #1d1d1f;
}
.sv-pill-slider {
    position: absolute;
    top: 3px;
    bottom: 3px;
    background: white;
    border-radius: 9999px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), width 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    z-index: 0;
}

/* ── Height-based Responsive Adjustments ── */
@media (max-height: 760px) {
  /* Left side: shrink Electron Animation */
  .sv-card-anim {
    min-height: 80px;
  }
  
  /* Middle side: shrink textarea min-height so it adapts */
  #settings-suggestion-input {
    min-height: 40px;
    height: auto !important; /* Ignore JS auto-resize inline height */
    flex: 1 1 0 !important;
  }

  /* Remove shortcut chips FIRST at 760px */
  .sv-suggest-chips {
    display: none;
  }
  .sv-suggest-hint {
    display: none;
  }
  
  /* Right side: shrink changelog padding to naturally scale down */
  .sv-changelog {
    padding: 16px 14px;
  }
  .sv-changelog-list {
    gap: 12px;
  }

  .physics-support-rod {
    height: 60px !important;
  }
}

@media (max-height: 680px) {
  .settings-viewport {
    padding-top: 10px;
    padding-bottom: 20px;
    gap: 12px;
    grid-template-rows: minmax(0, 1fr);
  }
  .sv-sidebar, .sv-main, .sv-changelog {
    gap: 8px;
    min-height: 0; /* Critical for allowing grid items to squish smaller than content */
  }
  
  .sv-card {
    padding: 12px 16px;
    min-height: 0;
  }
  
  .sv-card-icon-row {
    margin-bottom: 4px;
  }
  
  .sv-card-anim {
    min-height: 0;
    flex: 1 1 0;
  }
  .sv-card-anim .sv-anim-controls {
    justify-content: center;
    gap: 2px;
    min-height: 0;
    flex: 1 1 0;
  }
  
  .sv-card-suggest {
    min-height: 0;
    flex: 1 1 0;
  }
  
  .sv-suggest-row {
    min-height: 0;
    flex: 1 1 0;
  }
  
  #settings-suggestion-input {
    min-height: 0 !important;
    height: auto !important; /* Ignore JS auto-resize */
    padding: 6px 12px;
    flex: 1 1 0 !important;
  }
  
  #settings-suggestion-input::placeholder {
    color: transparent; /* Hide placeholder when extremely squished to prevent half-cut text */
  }

  .sv-suggest-actions-bottom {
    padding: 4px 10px 8px 10px;
  }
  .sv-suggest-send {
    height: 32px;
    padding: 0 16px;
    font-size: 0.8rem;
  }

  /* Hide scrollbar on textarea when extremely small to prevent visual bug */
  #settings-suggestion-input::-webkit-scrollbar {
    display: none;
  }
  #settings-suggestion-input {
    scrollbar-width: none;
  }

  /* Allow the 3 left cards to shrink heavily */
  .sv-link-card {
    min-height: 0 !important;
    padding: 8px 16px;
    gap: 12px;
    flex-shrink: 1;
  }
  .sv-link-card-icon {
    width: 32px;
    height: 32px;
  }
  .sv-link-card-title {
    font-size: 0.9rem;
  }
  .sv-link-card-desc {
    font-size: 0.75rem;
  }
  
  .sv-anim-row {
    margin-bottom: 4px;
  }
  
  .physics-support-rod {
    height: 45px !important;
  }
}