/* ===== DESIGN TOKENS ===== */
:root {
  --accent: #e8372a;
  --accent-dark: #c42d21;
  --accent-light: rgba(232, 55, 42, 0.08);
  --accent-glow: rgba(232, 55, 42, 0.25);
  --compress-blue: #0284c7;
  --compress-blue-dark: #0369a1;
  --compress-blue-bg: rgba(2, 132, 199, 0.08);
  --compress-blue-glow: rgba(2, 132, 199, 0.25);
  --savings-green: #10b981;
  --savings-green-dark: #059669;
  --savings-bg: rgba(16, 185, 129, 0.1);
  --savings-border: rgba(16, 185, 129, 0.3);
  --amber-tag: #f59e0b;
  --amber-bg: rgba(245, 158, 11, 0.12);
  --font-heading: "Sora", sans-serif;
  --font-body: "DM Sans", sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --transition: 0.2s ease;
  --max-w: 1200px;
  --nav-h: 68px;
}

[data-theme="light"] {
  --bg: #f8f7f5;
  --surface: #ffffff;
  --surface-2: #f2f1ef;
  --surface-3: #eae9e6;
  --border: #e4e2de;
  --border-focus: #c8c5be;
  --text: #1a1917;
  --text-2: #4a4845;
  --text-3: #7a7875;
  --nav-bg: rgba(248, 247, 245, 0.92);
  --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  --card-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.09);
  --modal-overlay: rgba(15, 15, 15, 0.65);
}

[data-theme="dark"] {
  --bg: #111110;
  --surface: #1c1b1a;
  --surface-2: #252422;
  --surface-3: #2e2c2a;
  --border: #333230;
  --border-focus: #4a4845;
  --text: #f0ede8;
  --text-2: #b5b0a8;
  --text-3: #7a7875;
  --nav-bg: rgba(17, 17, 16, 0.92);
  --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  --card-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  --modal-overlay: rgba(0, 0, 0, 0.82);
}

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  transition:
    background var(--transition),
    color var(--transition);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  font-family: var(--font-body);
  border: none;
  background: none;
}

ol,
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

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

/* ===== NAVBAR ===== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition:
    background var(--transition),
    border-color var(--transition);
}

.site-header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo-text span {
  color: var(--accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Header Buttons */
.theme-toggle,
.recovery-btn {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background 0.3s,
    border-color 0.3s,
    transform 0.2s,
    color 0.2s;
  color: var(--text-2);
  flex-shrink: 0;
  cursor: pointer;
}

.theme-toggle:hover,
.recovery-btn:hover {
  background: rgba(232, 55, 42, 0.07);
  border-color: rgba(232, 55, 42, 0.18);
  color: var(--accent);
  transform: scale(1.08);
}

.theme-toggle svg,
.recovery-btn svg {
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.recovery-badge {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  animation: pulse-badge 2s infinite ease-in-out;
}

@keyframes pulse-badge {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(232, 55, 42, 0.6);
  }
  70% {
    transform: scale(1.1);
    box-shadow: 0 0 0 6px rgba(232, 55, 42, 0);
  }
  100% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(232, 55, 42, 0);
  }
}

.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  gap: 5px;
  cursor: pointer;
  background: transparent;
  transition: all var(--transition);
}

.hamburger-btn:hover {
  background: var(--surface-2);
}

.h-bar {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== MOBILE SIDE MENU ===== */
.side-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.side-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.side-menu {
  position: fixed;
  top: 0;
  right: -320px;
  width: 290px;
  height: 100%;
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 1200;
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.side-menu.open {
  transform: translateX(-320px);
}

.side-menu-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.side-menu-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
}

.close-btn {
  padding: 6px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
}

.close-btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.side-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all var(--transition);
}

.side-nav a:hover {
  background: var(--surface-2);
  color: var(--text);
}

.nav-icon {
  display: flex;
  align-items: center;
  color: var(--text-3);
}

.side-nav a:hover .nav-icon {
  color: var(--accent);
}

.side-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 0;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  padding: 14px 0 0;
  font-size: 0.85rem;
  color: var(--text-3);
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb__item a {
  color: var(--text-3);
  transition: color var(--transition);
}

.breadcrumb__item a:hover {
  color: var(--accent);
}

.breadcrumb__sep {
  color: var(--text-3);
  user-select: none;
}

.breadcrumb__item span {
  color: var(--text-2);
  font-weight: 500;
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 44px 0 32px;
  text-align: center;
}

.hero__inner {
  max-width: 820px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--compress-blue-bg);
  border: 1px solid var(--compress-blue-glow);
  color: var(--compress-blue);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}

[data-theme="dark"] .hero__badge {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.25);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 16px;
}

.hero__title .accent {
  color: var(--accent);
}

.hero__sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-2);
  max-width: 720px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.hero__badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
}

.pill svg {
  color: var(--savings-green);
  flex-shrink: 0;
}

/* ===== TOOL / WORKSPACE SECTION ===== */
.tool-section {
  padding: 10px 0 60px;
}

/* Upload Dropzone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 54px 30px;
  text-align: center;
  cursor: pointer;
  background: var(--surface);
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
  position: relative;
  outline: none;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: var(--surface-2);
  transform: translateY(-2px);
  box-shadow: var(--card-hover-shadow);
}

.upload-zone__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--compress-blue-bg);
  color: var(--compress-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  transition: transform var(--transition);
}

[data-theme="dark"] .upload-zone__icon {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
}

.upload-zone:hover .upload-zone__icon {
  transform: scale(1.08);
}

.upload-zone__title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.upload-zone__sub {
  color: var(--text-3);
  font-size: 0.95rem;
  margin-bottom: 22px;
}

.upload-zone__formats {
  margin-top: 18px;
  font-size: 0.82rem;
  color: var(--text-3);
}

#fileInput {
  display: none;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 10px var(--accent-glow);
  transition: all var(--transition);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--surface-2);
  color: var(--text-2);
  border: 1px solid var(--border);
  font-weight: 500;
  font-size: 0.88rem;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--surface-3);
  color: var(--text);
  border-color: var(--border-focus);
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Active Workspace */
.workspace {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--card-shadow);
  margin-top: 10px;
}

.workspace.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* File Info Bar */
.file-info-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  gap: 16px;
  flex-wrap: wrap;
}

.file-info-bar__left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.file-info-bar__icon {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--compress-blue-bg);
  color: var(--compress-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

[data-theme="dark"] .file-info-bar__icon {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
}

.file-info-bar__meta {
  min-width: 0;
}

.file-info-bar__name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 380px;
}

.file-info-bar__size {
  font-size: 0.83rem;
  color: var(--text-3);
}


.file-info-bar__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== COMPRESSION PRESETS SECTION ===== */
.section-headline {
  margin-bottom: 16px;
}

.section-headline h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-headline p {
  font-size: 0.85rem;
  color: var(--text-3);
  margin-top: 2px;
}

.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.preset-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 5px;
  user-select: none;
  overflow: hidden;
  box-sizing: border-box;
}

.preset-card:hover {
  border-color: var(--border-focus);
  background: var(--surface-2);
  transform: translateY(-1px);
}

.preset-card.active {
  border-color: var(--compress-blue);
  background: var(--compress-blue-bg);
  box-shadow: 0 0 0 1px var(--compress-blue);
}

[data-theme="dark"] .preset-card.active {
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
  box-shadow: 0 0 0 1px #38bdf8;
}

.preset-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  width: 100%;
  min-width: 0;
}

.preset-card__title-wrap {
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  flex: 1;
}

.preset-card__radio {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.preset-card.active .preset-card__radio {
  border-color: var(--compress-blue);
  background: var(--compress-blue);
}

[data-theme="dark"] .preset-card.active .preset-card__radio {
  border-color: #38bdf8;
  background: #38bdf8;
}

.preset-card.active .preset-card__radio::after {
  content: "";
  width: 5px;
  height: 5px;
  background: #ffffff;
  border-radius: 50%;
}

.preset-card__name {
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preset-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.64rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1.3;
  margin-left: 0;
}

.preset-badge--popular {
  background: rgba(232, 55, 42, 0.1);
  color: var(--accent);
}

.preset-badge--extreme {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.preset-badge--mild {
  background: rgba(16, 185, 129, 0.1);
  color: var(--savings-green);
}

.preset-badge--lossless {
  background: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}

.preset-badge--custom {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

.preset-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px 6px;
  font-size: 0.82rem;
  padding-left: 23px;
  line-height: 1.35;
}

.preset-savings {
  font-weight: 700;
  color: var(--savings-green);
  white-space: nowrap;
}

.preset-savings--lossless {
  color: #8b5cf6;
}

[data-theme="dark"] .preset-savings--lossless {
  color: #a78bfa;
}

.preset-savings--custom {
  color: #d97706;
}

[data-theme="dark"] .preset-savings--custom {
  color: #fbbf24;
}

.preset-sep {
  color: var(--text-3);
  font-size: 0.75rem;
  user-select: none;
}

.preset-detail {
  color: var(--text-2);
  font-size: 0.8rem;
  font-weight: 500;
}

.preset-detail--prominent {
  color: var(--text);
  font-weight: 600;
}

[data-theme="dark"] .preset-detail {
  color: #d1d5db;
}

[data-theme="dark"] .preset-detail--prominent {
  color: #f9fafb;
}

/* ===== CUSTOM CONTROLS PANEL ===== */
.custom-panel {
  display: none;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg, 16px);
  padding: 24px;
  margin-bottom: 24px;
  animation: fadeIn 0.25s ease;
}

.custom-panel.active {
  display: block;
}

.custom-panel__header {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.custom-panel__badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #d97706;
  background: rgba(245, 158, 11, 0.1);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 6px;
}

[data-theme="dark"] .custom-panel__badge {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.15);
}

.custom-panel__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.custom-panel__desc {
  font-size: 0.84rem;
  color: var(--text-3);
  line-height: 1.4;
  margin: 0;
}

.custom-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 768px) {
  .custom-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

.custom-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius, 12px);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.custom-card:hover,
.custom-card:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .custom-card {
  background: #1c1b19;
  border-color: #333230;
}

[data-theme="dark"] .custom-card:hover,
[data-theme="dark"] .custom-card:focus-within {
  border-color: #4a4845;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.custom-card--full {
  grid-column: 1 / -1;
}

.custom-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.custom-card__title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.custom-card__icon-wrap {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(14, 165, 233, 0.09);
  color: var(--compress-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

[data-theme="dark"] .custom-card__icon-wrap {
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
}

.custom-card__title {
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  display: block;
}

.custom-card__desc {
  font-size: 0.78rem;
  color: var(--text-3);
  line-height: 1.3;
  margin-top: 2px;
}

.custom-card__hint-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.custom-card__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.custom-val-badge {
  font-family: monospace;
  font-size: 0.82rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 6px;
  color: var(--compress-blue);
  font-weight: 700;
  white-space: nowrap;
}

[data-theme="dark"] .custom-val-badge {
  color: #38bdf8;
  background: #252422;
}

.custom-slider-wrap {
  display: flex;
  align-items: center;
  padding: 4px 0;
}

.range-slider {
  width: 100%;
  accent-color: var(--compress-blue);
  height: 6px;
  border-radius: 3px;
  background: var(--surface-3);
  cursor: pointer;
}

.slider-ticks-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 500;
  margin-top: 2px;
}

.quick-dpi-btns {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.btn-chip {
  font-size: 0.76rem;
  padding: 4px 9px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-2);
  transition: all var(--transition);
  cursor: pointer;
}

.btn-chip:hover {
  background: var(--surface-3);
  color: var(--text);
  border-color: var(--border-focus);
}

.btn-chip.active {
  background: var(--compress-blue);
  border-color: var(--compress-blue);
  color: #ffffff;
}

[data-theme="dark"] .btn-chip.active {
  background: #0284c7;
  border-color: #0284c7;
}

/* Grayscale Switch */
.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  transition: border-color var(--transition), background-color var(--transition);
}

.switch-row:hover {
  border-color: var(--border-focus);
}

.switch-row.checked {
  background: rgba(16, 185, 129, 0.05);
  border-color: rgba(16, 185, 129, 0.4);
}

[data-theme="dark"] .switch-row.checked {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(52, 211, 153, 0.5);
}

.switch-label {
  display: flex;
  flex-direction: column;
}

.switch-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.switch-sub {
  font-size: 0.76rem;
  color: var(--text-3);
  margin-top: 2px;
}

.switch-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: #d1d5db;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  flex-shrink: 0;
}

[data-theme="dark"] .switch-toggle {
  background: #475569;
  border-color: #64748b;
}

.switch-toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  transition: transform var(--transition);
}

.switch-row.checked .switch-toggle {
  background: var(--savings-green, #10b981);
  border-color: var(--savings-green, #10b981);
}

.switch-row.checked .switch-toggle::after {
  transform: translateX(20px);
}

/* Target Size Input */
.target-input-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.target-input {
  flex: 1;
  padding: 9px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.target-input:focus {
  border-color: var(--compress-blue);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.12);
}

[data-theme="dark"] .target-input {
  background: #252422;
}

#applyTargetBtn {
  background: var(--compress-blue, #0284c7);
  color: #ffffff;
  border: 1px solid var(--compress-blue, #0284c7);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#applyTargetBtn:hover {
  background: #0369a1;
  border-color: #0369a1;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(2, 132, 199, 0.35);
}

#applyTargetBtn:active {
  transform: translateY(0);
}

[data-theme="dark"] #applyTargetBtn {
  background: #0284c7;
  border-color: #38bdf8;
  color: #ffffff;
}

[data-theme="dark"] #applyTargetBtn:hover {
  background: #0369a1;
  border-color: #38bdf8;
  box-shadow: 0 3px 10px rgba(56, 189, 248, 0.35);
}

/* ===== LIVE QUALITY COMPARISON WIDGET ===== */
.comparison-section {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.comparison-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.comparison-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.savings-estimate-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--savings-bg);
  border: 1px solid var(--savings-border);
  color: var(--savings-green-dark);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-full);
}

[data-theme="dark"] .savings-estimate-badge {
  color: #34d399;
}

.comparison-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.btn-icon:hover:not(:disabled) {
  background: var(--surface-3);
  color: var(--text);
}

.btn-icon:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-stepper {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-2);
}

/* Comparison Viewer */
.comparison-viewport {
  position: relative;
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.side-by-side-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 100%;
  height: 100%;
  gap: 12px;
  padding: 16px;
}

@media (max-width: 768px) {
  .side-by-side-grid {
    grid-template-columns: 1fr;
  }
}

.comparison-pane {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  min-width: 0;
  transition: all var(--transition);
}

.pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 8px;
  gap: 8px;
}

.btn-pane-fs {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.btn-pane-fs:hover {
  background: var(--surface-3);
  color: var(--text);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.btn-pane-fs svg {
  flex-shrink: 0;
}

/* Data-view grid switching */
.side-by-side-grid[data-view="orig"] {
  grid-template-columns: 1fr;
}
.side-by-side-grid[data-view="orig"] #origPane {
  display: flex;
  grid-column: 1 / -1;
  width: 100%;
}
.side-by-side-grid[data-view="orig"] #compPane {
  display: none !important;
}

.side-by-side-grid[data-view="comp"] {
  grid-template-columns: 1fr;
}
.side-by-side-grid[data-view="comp"] #compPane {
  display: flex;
  grid-column: 1 / -1;
  width: 100%;
}
.side-by-side-grid[data-view="comp"] #origPane {
  display: none !important;
}

.side-by-side-grid[data-view="split"] #origPane,
.side-by-side-grid[data-view="split"] #compPane {
  display: flex;
}

.pane-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.pane-label--orig {
  background: var(--surface-2);
  color: var(--text-3);
}

.pane-label--comp {
  background: var(--compress-blue-bg);
  color: var(--compress-blue);
}

[data-theme="dark"] .pane-label--comp {
  color: #38bdf8;
}

.pane-canvas-wrap {
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  min-height: 260px;
  scrollbar-width: thin;
  position: relative;
  user-select: none;
}

.pane-canvas-wrap.is-zoomed {
  cursor: grab;
}

.pane-canvas-wrap.is-panning {
  cursor: grabbing !important;
}

.pane-canvas-wrap canvas,
.pane-canvas-wrap img {
  max-width: 100%;
  max-height: 440px;
  object-fit: contain;
  box-shadow: var(--shadow-sm);
  border-radius: 4px;
  background: #ffffff;
  cursor: zoom-in;
  transition:
    transform 0.12s ease-out,
    margin 0.12s ease-out;
}

.pane-canvas-wrap canvas:hover {
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.14);
}

.pane-canvas-wrap.is-zoomed canvas {
  cursor: grab;
}

.pane-canvas-wrap.is-panning canvas {
  cursor: grabbing !important;
}

.pane-metric {
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text-3);
  font-weight: 600;
  text-align: center;
}

/* Preview Placeholder & Button */
.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 30px 16px;
  gap: 12px;
  width: 100%;
}

.placeholder-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--compress-blue-bg);
  color: var(--compress-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2px;
}

[data-theme="dark"] .placeholder-icon {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
}

.placeholder-text {
  font-size: 0.88rem;
  color: var(--text-2);
  max-width: 240px;
  line-height: 1.4;
}

.btn-preview {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--compress-blue);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px var(--compress-blue-glow);
  transition: all var(--transition);
  cursor: pointer;
}

.btn-preview:hover:not(:disabled) {
  background: var(--compress-blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--compress-blue-glow);
}

.btn-preview:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.spinner-xs {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ===== FULLSCREEN COMPARISON MODE ===== */
.comparison-section.is-fullscreen {
  position: fixed !important;
  inset: 0 !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 999999 !important;
  margin: 0 !important;
  border-radius: 0 !important;
  border: none !important;
  background: var(--bg) !important;
  padding: 16px 24px !important;
  display: flex !important;
  flex-direction: column !important;
  overflow: hidden !important;
  box-sizing: border-box !important;
}

body.comparison-fullscreen-active {
  overflow: hidden !important;
}

.comparison-section.is-fullscreen .comparison-header {
  flex-shrink: 0;
  margin-bottom: 12px;
  width: 100%;
}

.comparison-section.is-fullscreen .comparison-viewport {
  flex: 1;
  min-height: 0;
  height: 100%;
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  border-radius: var(--radius-sm);
  background: var(--surface-3);
  overflow: hidden;
  position: relative;
}

.comparison-section.is-fullscreen .side-by-side-grid {
  flex: 1;
  min-height: 0;
  height: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 14px;
  box-sizing: border-box;
  overflow: hidden;
  width: 100%;
}

.comparison-section.is-fullscreen .side-by-side-grid[data-view="orig"],
.comparison-section.is-fullscreen .side-by-side-grid[data-view="comp"] {
  grid-template-columns: 1fr;
}

@media (max-width: 768px) {
  .comparison-section.is-fullscreen .side-by-side-grid {
    grid-template-columns: 1fr;
    overflow-y: auto;
  }
}

.comparison-section.is-fullscreen .comparison-pane {
  flex: 1;
  min-height: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
}

.comparison-section.is-fullscreen .pane-canvas-wrap {
  flex: 1;
  min-height: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
}

.comparison-section.is-fullscreen .pane-canvas-wrap canvas,
.comparison-section.is-fullscreen .pane-canvas-wrap img {
  max-height: calc(100vh - 170px);
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  border-radius: 6px;
}

.comparison-section.is-fullscreen .pane-metric {
  flex-shrink: 0;
  margin-top: 8px;
}

/* Floating Navigation Buttons in Fullscreen */
.fs-nav-btn {
  display: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  transition: all var(--transition);
  opacity: 0.85;
}

.fs-nav-btn:hover:not(:disabled) {
  opacity: 1;
  background: var(--surface-3);
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.fs-nav-btn:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.fs-nav-btn--prev {
  left: 12px;
}

.fs-nav-btn--next {
  right: 12px;
}

.comparison-section.is-fullscreen .fs-nav-btn {
  display: flex;
}

.btn-icon.is-active {
  background: var(--compress-blue-bg);
  border-color: var(--compress-blue);
  color: var(--compress-blue);
}

[data-theme="dark"] .btn-icon.is-active {
  color: #38bdf8;
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
}

.fs-view-tabs {
  display: none;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
}

.comparison-section.is-fullscreen .fs-view-tabs {
  display: inline-flex;
}

.fs-tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  color: var(--text-2);
  cursor: pointer;
  background: transparent;
  border: none;
  transition: all var(--transition);
  user-select: none;
}

.fs-tab:hover {
  color: var(--text);
  background: var(--surface-2);
}

.fs-tab.active {
  background: var(--compress-blue);
  color: #ffffff;
}

[data-theme="dark"] .fs-tab.active {
  background: #38bdf8;
  color: #0f172a;
}

/* ===== ACTION BAR ===== */
.action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  gap: 16px;
  flex-wrap: wrap;
}

.action-bar__info {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-2);
  font-size: 0.92rem;
}

.action-bar__info strong {
  color: var(--text);
}

.action-bar__btns {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-compress-main {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 18px var(--accent-glow);
  transition: all var(--transition);
}

.btn-compress-main:hover:not(:disabled) {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px var(--accent-glow);
}

.btn-compress-main:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ===== RESULTS CARD ===== */
.results-card {
  display: none;
  background: var(--surface);
  border: 2px solid var(--savings-green);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  margin-top: 24px;
  box-shadow: 0 10px 30px var(--savings-bg);
  animation: fadeIn 0.35s ease;
}

.results-card.active {
  display: block;
}

.results-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--savings-bg);
  color: var(--savings-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.results-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 6px;
}

.results-sub {
  color: var(--text-2);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.results-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  max-width: 620px;
  margin: 0 auto 26px;
  flex-wrap: wrap;
}

.results-stat-val {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  display: block;
  margin-top: 2px;
}

.results-stat-divider {
  width: 1px;
  height: 38px;
  background: var(--border);
}

.results-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== LOADING PROGRESS MODAL ===== */
.loading-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.loading-modal-overlay.active {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.loading-modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  width: 100%;
  max-width: 440px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.loading-modal__icon {
  margin-bottom: 18px;
  display: flex;
  justify-content: center;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--surface-3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-modal__brand {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
  vertical-align: middle;
}

.loading-modal__brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  object-fit: contain;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  margin: 0;
}

.loading-modal__brand .logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
  display: inline-flex;
  align-items: center;
  margin: 0;
}

.loading-modal__brand .logo-text span {
  color: var(--accent);
}

.loading-modal__title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

.loading-bar-track {
  width: 100%;
  height: 8px;
  background: var(--surface-3);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.loading-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(
    90deg,
    var(--compress-blue),
    var(--savings-green)
  );
  border-radius: 4px;
  transition: width 0.25s ease;
}

.loading-modal__status {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-2);
}

.loading-modal__watermark {
  margin-top: 18px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.loading-modal__watermark svg {
  color: var(--savings-green);
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  z-index: 3000;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: all 0.25s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.toast.error {
  border-color: rgba(239, 68, 68, 0.4);
}

.toast.success {
  border-color: rgba(16, 185, 129, 0.4);
}

/* ===== SEO CONTENT SECTIONS ===== */
.section {
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.section__header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 44px;
}

.section__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 12px;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 12px;
}

.section__sub {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* What is it grid */
.what-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 860px) {
  .what-grid {
    grid-template-columns: 1fr;
  }
}

.what-body p {
  color: var(--text-2);
  margin-bottom: 16px;
  font-size: 0.98rem;
  line-height: 1.7;
}

.what-body strong {
  color: var(--text);
}

.what-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.what-visual__row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.size-pill-orig {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.size-arrow {
  font-size: 1.3rem;
  color: var(--text-3);
}

.size-pill-comp {
  background: var(--savings-bg);
  color: var(--savings-green-dark);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--savings-border);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
}

.feat-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
  box-shadow: var(--card-hover-shadow);
}

.feat-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--compress-blue-bg);
  color: var(--compress-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

[data-theme="dark"] .feat-card__icon {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
}

.feat-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.feat-card p {
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Step by Step Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  box-shadow: var(--card-shadow);
}

.step-number {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.step-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.step-card p {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.55;
}

/* Comparison Table */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--card-shadow);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.comparison-table th {
  background: var(--surface-2);
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background: var(--surface-2);
}

/* FAQ Accordion */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: border-color var(--transition);
}

.faq-item:hover {
  border-color: var(--border-focus);
}

.faq-item.active {
  border-color: var(--compress-blue);
}

.faq-question {
  width: 100%;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  transition: transform 0.25s ease;
  color: var(--text-3);
  flex-shrink: 0;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--compress-blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 22px;
  color: var(--text-2);
  font-size: 0.94rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 800px;
  padding-bottom: 20px;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

/* Related Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.tool-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--card-hover-shadow);
}

.tool-card__icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.tool-card h3 {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.tool-card p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.5;
  margin-bottom: 14px;
  flex: 1;
}

.tool-card__arrow {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

/* Contact Strip */
.contact-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  box-shadow: var(--card-shadow);
  max-width: 820px;
  margin: 0 auto;
}

.contact-strip h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text);
}

.contact-strip p {
  color: var(--text-2);
  font-size: 0.98rem;
  margin-bottom: 22px;
}

.contact-strip__email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--accent);
  font-weight: 700;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.contact-strip__email:hover {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 28px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}

@media (max-width: 860px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

.footer__brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer__brand-header img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer__brand-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text);
}

.footer__brand-name span {
  color: var(--accent);
}

.footer__brand p {
  color: var(--text-3);
  font-size: 0.88rem;
  line-height: 1.6;
  max-width: 300px;
  margin-bottom: 18px;
}

.footer__socials {
  display: flex;
  gap: 10px;
}

.footer__social {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: all var(--transition);
}

.footer__social:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.footer__col h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__col a {
  color: var(--text-3);
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer__col a:hover {
  color: var(--accent);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.83rem;
  color: var(--text-3);
  flex-wrap: wrap;
  gap: 12px;
}

.footer__copy a {
  color: var(--text-2);
  font-weight: 600;
}

.footer__badges {
  display: flex;
  gap: 10px;
}

.footer__badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-2);
}

/* Back to Top */
.back-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 900;
}

.back-top.show {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}