/* =============================================
       CSS CUSTOM PROPERTIES – DESIGN SYSTEM
    ============================================= */
:root {
  --accent: #e8372a;
  --accent-dark: #c22d21;
  --accent-light: #ff6b5e;
  --accent-alpha: rgba(232, 55, 42, 0.12);

  --bg: #ffffff;
  --bg-alt: #f7f7f8;
  --surface: #ffffff;
  --surface-2: #f0f0f2;
  --border: #e2e2e6;
  --border-light: #ebebee;

  --text: #111118;
  --text-2: #4a4a5a;
  --text-3: #7a7a8a;
  --text-inv: #ffffff;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1), 0 2px 6px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.14), 0 4px 12px rgba(0, 0, 0, 0.08);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --nav-h: 64px;
  --font-head: "Sora", sans-serif;
  --font-body: "DM Sans", sans-serif;

  --transition: 0.22s ease;
}

[data-theme="dark"] {
  --bg: #0f0f13;
  --bg-alt: #16161d;
  --surface: #1c1c24;
  --surface-2: #24242f;
  --border: #2e2e3a;
  --border-light: #252530;

  --text: #f0f0f5;
  --text-2: #aaaab8;
  --text-3: #6e6e80;
  --text-inv: #ffffff;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* =============================================
       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: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--accent-dark);
}

h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.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;
}

/* Scroll Reveal Disabled for SEO Integrity */

/* =============================================
       NAVBAR
    ============================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition:
    background var(--transition),
    border-color var(--transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  gap: 12px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-logo-text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

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

.nav-section-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-section-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  text-decoration: none;
  transition:
    color var(--transition),
    background var(--transition);
}

.nav-section-links a:hover {
  color: var(--accent);
  background: var(--accent-alpha);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* Theme Toggle */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
  font-size: 1.05rem;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--accent-alpha);
  border-color: var(--accent);
  color: var(--accent);
}

/* Home button */
.home-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-2);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.home-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-alpha);
}

/* Hamburger */
.hamburger-btn {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  cursor: pointer;
  display: none; /* Hidden by default on desktop */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all var(--transition);
  flex-shrink: 0;
}

.hamburger-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-2);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger-btn.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger-btn.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger-btn.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hamburger-btn:hover {
  background: var(--accent-alpha);
  border-color: var(--accent);
}

.hamburger-btn:hover span {
  background: var(--accent);
}

/* Drawer */
.nav-drawer {
  position: fixed;
  top: var(--nav-h);
  right: 0;
  width: min(280px, 85vw);
  height: calc(100vh - var(--nav-h));
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
  overflow-y: auto;
  padding: 24px 20px;
}

.nav-drawer.open {
  transform: translateX(0);
}

.nav-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  top: var(--nav-h);
}

.nav-drawer-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.drawer-label {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 10px;
}

.drawer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.drawer-nav-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  transition: all var(--transition);
}

.drawer-nav-list a:hover {
  background: var(--accent-alpha);
  color: var(--accent);
}

.drawer-nav-list a .icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.drawer-divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

/* =============================================
       BREADCRUMB
    ============================================= */
.breadcrumb-bar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border-light);
  padding: 10px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-3);
  list-style: none;
  flex-wrap: wrap;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a {
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  color: var(--border);
}
.breadcrumb .current {
  color: var(--text-2);
  font-weight: 500;
}

/* =============================================
       HERO
    ============================================= */
.hero {
  padding: 60px 0 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-alpha) 0%, transparent 65%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--accent-alpha);
  border: 1px solid rgba(232, 55, 42, 0.25);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero-badge svg {
  width: 13px;
  height: 13px;
  fill: currentColor;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: var(--text);
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-desc {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text-2);
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.7;
}

.hero-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-tag {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 100px;
}

.hero-tag svg {
  width: 12px;
  height: 12px;
  fill: #22c55e;
}
.hero-tag svg.blue {
  fill: #3b82f6;
}
.hero-tag svg.orange {
  fill: #f97316;
}

/* =============================================
       TOOL AREA
    ============================================= */
.tool-section {
  padding: 0 0 64px;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* Upload zone */
.upload-zone {
  padding: 56px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  margin: 24px;
  cursor: pointer;
  background: var(--bg-alt);
  transition: all var(--transition);
  position: relative;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-alpha);
}

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.upload-icon {
  width: 64px;
  height: 64px;
  background: var(--accent-alpha);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 1.8rem;
}

.upload-zone h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
  color: var(--text);
}

.upload-zone p {
  font-size: 0.88rem;
  color: var(--text-3);
  margin-bottom: 20px;
}

.btn-upload {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition:
    background var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
  pointer-events: none;
  box-shadow: 0 4px 14px rgba(232, 55, 42, 0.3);
}

.upload-zone:hover .btn-upload {
  background: var(--accent-dark);
}

/* Reorder workspace */
.reorder-workspace {
  display: none;
  padding: 24px;
  flex-direction: column;
  gap: 20px;
}

.reorder-workspace.active {
  display: flex;
}

/* Toolbar */
.tool-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.toolbar-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toolbar-info svg {
  color: var(--accent);
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toolbar-info-text {
  font-size: 0.88rem;
  color: var(--text-2);
}

.toolbar-info-text strong {
  color: var(--text);
  font-weight: 600;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 3px 10px rgba(232, 55, 42, 0.25);
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 5px 16px rgba(232, 55, 42, 0.35);
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text-2);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--border);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  color: var(--text-3);
  border-color: var(--border);
}

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

/* Pages grid */
.pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  min-height: 200px;
}

.page-thumb {
  position: relative;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: grab;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  user-select: none;
}

.page-thumb:active {
  cursor: grabbing;
}

.page-thumb:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-thumb.sortable-ghost {
  opacity: 0.4;
  border-color: var(--accent);
  background: var(--accent-alpha);
}

.page-thumb.sortable-chosen {
  box-shadow: 0 8px 24px rgba(232, 55, 42, 0.25);
  border-color: var(--accent);
}

.page-canvas-wrapper {
  aspect-ratio: 3/4;
  background: #fff;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

[data-theme="dark"] .page-canvas-wrapper {
  background: #2a2a35;
}

.page-canvas-wrapper canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.page-canvas-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  font-size: 2rem;
}

.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-top: 1px solid var(--border-light);
  background: var(--bg-alt);
}

.page-num {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-3);
}

.page-delete-btn {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: all var(--transition);
  padding: 0;
}

.page-delete-btn:hover {
  background: rgba(232, 55, 42, 0.15);
  color: var(--accent);
}

.drag-handle {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 22px;
  height: 22px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.65rem;
  opacity: 0;
  transition: opacity var(--transition);
  cursor: grab;
}

.page-thumb:hover .drag-handle {
  opacity: 1;
}

/* Progress bar */
.progress-bar-wrap {
  background: var(--surface-2);
  border-radius: 100px;
  height: 6px;
  overflow: hidden;
  margin-top: 4px;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 100px;
  transition: width 0.3s ease;
  width: 0%;
}

/* Status message */
.status-msg {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
}

.status-msg.show {
  display: flex;
}

.status-msg.loading {
  background: var(--accent-alpha);
  border: 1px solid rgba(232, 55, 42, 0.2);
  color: var(--accent);
}

.status-msg.success {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.25);
  color: #16a34a;
}

[data-theme="dark"] .status-msg.success {
  color: #4ade80;
}

.status-msg.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #dc2626;
}

[data-theme="dark"] .status-msg.error {
  color: #f87171;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(232, 55, 42, 0.3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

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

/* Instructions hint */
.hint-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--surface-2);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  color: var(--text-3);
}

.hint-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.hint-icon {
  font-size: 1rem;
}

/* =============================================
       SECTIONS COMMON
    ============================================= */
section {
  padding: 72px 0;
}

section:nth-child(even) {
  background: var(--bg-alt);
}

.section-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-alpha);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
  border: 1px solid rgba(232, 55, 42, 0.2);
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
  color: var(--text);
}

.section-desc {
  font-size: 1rem;
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.7;
}

/* =============================================
       WHAT IS IT
    ============================================= */
.what-is-it-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 48px;
}

.what-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mini-page {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.mini-page:nth-child(1) {
  transform: none;
}
.mini-page:nth-child(2) {
  transform: translateX(10px);
  opacity: 0.75;
  border-color: var(--accent);
  background: var(--accent-alpha);
}
.mini-page:nth-child(3) {
  transform: translateX(4px);
  opacity: 0.9;
}
.mini-page:nth-child(4) {
  transform: none;
}

.mini-page-icon {
  width: 34px;
  height: 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-3);
  flex-shrink: 0;
  font-family: var(--font-head);
}

.mini-page-icon.accent-icon {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.mini-page-label {
  font-size: 0.82rem;
  color: var(--text-2);
  font-weight: 500;
}
.mini-page-arrows {
  margin-left: auto;
  color: var(--text-3);
  font-size: 0.9rem;
}

.mini-page:nth-child(2) .mini-page-arrows {
  color: var(--accent);
}

.what-content ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

.what-content ul li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.6;
}

.check-icon {
  width: 22px;
  height: 22px;
  background: rgba(34, 197, 94, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #16a34a;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

[data-theme="dark"] .check-icon {
  color: #4ade80;
  background: rgba(74, 222, 128, 0.15);
}

/* =============================================
       FEATURES
    ============================================= */
.features-header {
  text-align: center;
  margin-bottom: 48px;
}
.features-header .section-desc {
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--accent);
  box-shadow:
    0 0 0 3px var(--accent-alpha),
    var(--shadow-md);
  transform: translateY(-3px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-alpha);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* =============================================
       HOW TO USE
    ============================================= */
.how-header {
  margin-bottom: 48px;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.steps-list::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0;
  position: relative;
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  box-shadow:
    0 0 0 4px var(--bg),
    0 0 0 6px var(--accent-alpha);
}

.step-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.step-body p {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.65;
}

.step-body .step-tip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 8px;
  background: var(--accent-alpha);
  padding: 3px 10px;
  border-radius: 100px;
}

/* =============================================
       BENEFITS
    ============================================= */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.benefit-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  transition: all var(--transition);
}

.benefit-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.benefit-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-alpha);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.benefit-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 5px;
  color: var(--text);
}

.benefit-card p {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* =============================================
       FAQ
    ============================================= */
.faq-header {
  text-align: center;
  margin-bottom: 48px;
}
.faq-header .section-desc {
  margin: 0 auto;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.faq-item.open {
  border-color: var(--accent);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  user-select: none;
  transition: color var(--transition);
  /* Reset button styles */
  background: transparent;
  border: none;
  width: 100%;
  font-family: inherit;
  text-align: left;
  outline: none;
}

.faq-item.open .faq-q {
  color: var(--accent);
}

.faq-arrow {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.85rem;
  transition:
    transform 0.3s ease,
    background var(--transition);
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
  background: var(--accent-alpha);
  color: var(--accent);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.35s ease,
    padding 0.35s ease;
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.7;
}

.faq-item.open .faq-a {
  max-height: 200px;
  padding: 0 20px 18px;
}

/* =============================================
       RELATED TOOLS
    ============================================= */
.related-header {
  text-align: center;
  margin-bottom: 40px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  text-align: center;
  text-decoration: none;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

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

.related-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--accent-alpha);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.related-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}

.related-card p {
  font-size: 0.78rem;
  color: var(--text-3);
  line-height: 1.5;
}

.related-card .arrow-link {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* =============================================
       CONTACT
    ============================================= */
.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: var(--accent-alpha);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto 20px;
}

.contact-box h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.contact-box p {
  color: var(--text-2);
  font-size: 0.92rem;
  margin-bottom: 24px;
}

.contact-email-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  transition:
    background var(--transition),
    transform var(--transition);
  box-shadow: 0 4px 14px rgba(232, 55, 42, 0.3);
}

.contact-email-link:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
}

/* =============================================
       FOOTER
    ============================================= */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 56px 0 28px;
}

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

.footer-brand .logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  text-decoration: none;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-brand .brand-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text);
}

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

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-3);
  line-height: 1.65;
  margin-bottom: 16px;
}

.footer-social {
  display: flex;
  gap: 8px;
}

.social-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: all var(--transition);
  text-decoration: none;
}

.social-btn:hover {
  background: var(--accent-alpha);
  border-color: var(--accent);
  color: var(--accent);
}

.footer-col h4 {
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-3);
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul li a {
  font-size: 0.87rem;
  color: var(--text-2);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-3);
}

.footer-copy a {
  color: var(--text-3);
}
.footer-copy a:hover {
  color: var(--accent);
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* =============================================
       BACK TO TOP
    ============================================= */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 16px rgba(232, 55, 42, 0.35);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: all var(--transition);
}

.back-to-top.show {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

/* =============================================
       PRIVACY BANNER
    ============================================= */
.privacy-strip {
  background: rgba(34, 197, 94, 0.06);
  border-bottom: 1px solid var(--border-light);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  justify-content: center;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-2);
}

[data-theme="dark"] .privacy-strip {
  background: rgba(74, 222, 128, 0.04);
}

.privacy-strip-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* =============================================
       RESPONSIVE
    ============================================= */
@media (max-width: 1024px) {
  .nav-section-links {
    display: none;
  }
  .hamburger-btn {
    display: flex;
  } /* Show hamburger on tablet/mobile */

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-h: 58px;
  }

  .hero {
    padding: 44px 0 36px;
  }

  .what-is-it-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .pages-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
  }

  .tool-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar-actions {
    justify-content: flex-end;
  }

  .contact-box {
    padding: 36px 24px;
  }

  section {
    padding: 52px 0;
  }

  .steps-list::before {
    left: 19px;
  }
  .step-num {
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .nav-inner {
    padding: 0 16px;
  }

  .home-btn span {
    display: none;
  }
  .home-btn {
    padding: 7px 10px;
  }

  .hero-tags {
    gap: 6px;
  }

  .related-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pages-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
  }

  .upload-zone {
    padding: 40px 20px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .back-to-top {
    bottom: 20px;
    right: 16px;
  }

  .hint-bar {
    gap: 10px;
  }
}

/* =============================================
       UTILITY
    ============================================= */
.text-center {
  text-align: center;
}
.mt-0 {
  margin-top: 0 !important;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-3);
  font-size: 0.9rem;
  display: none;
}

.empty-state.show {
  display: block;
}
.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

/* Custom SVG Styles */
.drawer-nav-list a .icon svg {
  width: 15px;
  height: 15px;
  color: var(--accent);
  display: block;
}
.privacy-strip-icon {
  color: #16a34a;
  flex-shrink: 0;
}
[data-theme="dark"] .privacy-strip-icon {
  color: #4ade80;
}
.feature-icon svg {
  width: 22px;
  height: 22px;
  color: var(--accent);
  display: block;
}
.benefit-icon-wrap svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  display: block;
}
.related-card-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  display: block;
}
.contact-icon svg {
  width: 26px;
  height: 26px;
  color: var(--accent);
  display: block;
}
.page-delete-btn svg {
  transition: transform var(--transition);
}
.page-delete-btn:hover svg {
  transform: scale(1.1);
}
.theme-toggle svg {
  display: block;
}
/* Theme Icon Toggling via CSS */
[data-theme="dark"] .theme-icon-light {
  display: block;
}
[data-theme="dark"] .theme-icon-dark {
  display: none;
}
[data-theme="light"] .theme-icon-light {
  display: none;
}
[data-theme="light"] .theme-icon-dark {
  display: block;
}