/* ===================================
   HEIC Help — Global Design System
   Minimalist, Clean, SEO-Friendly
=================================== */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  --clr-bg: #f8f9fb;
  --clr-surface: #ffffff;
  --clr-border: #e5e7eb;
  --clr-text: #111827;
  --clr-text-muted: #6b7280;
  --clr-primary: #2563eb;
  --clr-primary-hover: #1d4ed8;
  --clr-primary-light: #eff6ff;
  --clr-accent: #0ea5e9;
  --clr-success: #16a34a;
  --clr-danger: #dc2626;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, .10);
  --font-sans: 'Inter', system-ui, sans-serif;
  --transition: 0.18s ease;
  --max-w: 1200px;
  --header-h: 64px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: var(--font-sans);
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ===================================
   TOP ANNOUNCEMENT BAR
=================================== */
.top-announcement-bar {
  background: var(--clr-primary);
  color: #fff;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  letter-spacing: 0.01em;
  position: relative;
  z-index: 101;
}

/* Centered privacy badge inside tool/page content */
.privacy-badge {
  display: block;
  text-align: center;
  width: fit-content;
  margin: 0.5rem auto;
}

/* ===================================
   HEADER / NAVIGATION
=================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--clr-border);
  height: var(--header-h);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 100%;
  justify-content: space-between;
}

.site-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

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

.logo-icon {
  width: 28px;
  height: 28px;
  background: var(--clr-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-selector {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  background: none;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  transition: border-color var(--transition);
}

.lang-selector:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.3rem;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===================================
   BUTTONS
=================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--clr-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--clr-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border: 1.5px solid var(--clr-primary);
}

.btn-outline:hover {
  background: var(--clr-primary-light);
}

.btn-lg {
  padding: 0.8rem 1.75rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 0.4rem 0.875rem;
  font-size: 0.8125rem;
}

/* ===================================
   SECTION UTILITIES
=================================== */
.section {
  padding-block: 3.5rem;
}

.section-sm {
  padding-block: 2rem;
}

.section-alt {
  background: var(--clr-surface);
}

.section-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: 0.75rem;
  text-align: center;
}

.section-title {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--clr-text);
  text-align: center;
}

.section-desc {
  font-size: 1rem;
  color: var(--clr-text-muted);
  max-width: 560px;
  margin-top: 0.5rem;
  text-align: center;
  margin-inline: auto;
}

.text-center {
  text-align: center;
}

.text-center .section-desc {
  margin-inline: auto;
}

/* ===================================
   TOOL CARDS — Homepage Grid
=================================== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.tool-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.125rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--clr-text);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  opacity: 0;
  background: linear-gradient(135deg, var(--clr-primary-light), transparent);
  transition: opacity var(--transition);
}

.tool-card:hover {
  border-color: var(--clr-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  margin-bottom: 0.25rem;
  position: relative;
}

.tool-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--clr-text);
  position: relative;
}

.tool-card p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
  position: relative;
}

/* ===================================
   FEATURES / WHY CHOOSE US
=================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.feature-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-primary-light);
}

.feature-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
}

.feature-card p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}

/* ===================================
   HOW IT WORKS
=================================== */
.steps-row {
  display: flex;
  gap: 0;
  margin-top: 2.5rem;
  position: relative;
}

.steps-row::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(50% / 3 + 1rem);
  right: calc(50% / 3 + 1rem);
  height: 2px;
  background: linear-gradient(to right, var(--clr-primary), var(--clr-accent));
  z-index: 0;
}

.step {
  flex: 1;
  text-align: center;
  padding: 0 1rem;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--clr-surface);
  border: 2px solid var(--clr-primary);
  color: var(--clr-primary);
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  box-shadow: 0 0 0 6px var(--clr-primary-light);
}

.step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.step p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
}

/* ===================================
   FAQ ACCORDION
=================================== */
.faq-list {
  margin-top: 2rem;
  max-width: 720px;
  margin-inline: auto;
}

.faq-item {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  overflow: hidden;
  background: var(--clr-surface);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--clr-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--clr-bg);
}

.faq-chevron {
  transition: transform var(--transition);
  flex-shrink: 0;
  color: var(--clr-text-muted);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 1.25rem 1rem;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* ===================================
   CONVERTER TOOL UI
=================================== */
.tool-hero {
  padding-block: 2rem 1.5rem;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
}

.tool-hero h1 {
  font-size: clamp(1.375rem, 2.5vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
}

.tool-hero>.container>p {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  margin-top: 0.4rem;
  max-width: 600px;
  text-align: center;
  margin-inline: auto;
}

.converter-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
  align-items: start;
}

.dropzone {
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-lg);
  background: var(--clr-bg);
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.dropzone:hover,
.dropzone.drag-over {
  border-color: var(--clr-primary);
  background: var(--clr-primary-light);
}

/* Upload icon box */
.dropzone-upload-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  background: var(--clr-primary-light);
  border: 1.5px solid #bfdbfe;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  margin-bottom: 0.25rem;
  transition: background var(--transition), transform var(--transition);
}

.dropzone:hover .dropzone-upload-icon,
.dropzone.drag-over .dropzone-upload-icon {
  background: #dbeafe;
  transform: translateY(-2px);
}

.dropzone-icon {
  font-size: 3rem;
  line-height: 1;
  color: var(--clr-primary);
}

.dropzone h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}

.dropzone p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  margin: 0;
}

.dropzone-hint {
  font-size: 0.75rem !important;
  color: var(--clr-text-muted);
  opacity: 0.75;
}

.dropzone-choose-btn {
  margin-top: 0.25rem;
  padding: 0.5rem 1.5rem !important;
  font-size: 0.875rem !important;
  border-radius: 999px !important;
  pointer-events: all;
}

.dropzone input[type="file"] {
  display: none;
}

/* Privacy / Free badge */
.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-primary);
  background: var(--clr-primary-light);
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  padding: 0.3rem 0.875rem;
  margin-top: 0.5rem;
  letter-spacing: 0.01em;
}

.options-panel {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.options-panel h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.option-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.option-label {
  font-size: 0.875rem;
  font-weight: 500;
}

.option-select,
.option-range-display {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
}

select.option-select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  background: var(--clr-bg);
  color: var(--clr-text);
  cursor: pointer;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--clr-primary);
}

.files-list {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 220px;
  overflow-y: auto;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
}

.file-item-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-item-status {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-weight: 500;
}

.file-status-ready {
  background: #f0fdf4;
  color: var(--clr-success);
}

.file-status-processing {
  background: #eff6ff;
  color: var(--clr-primary);
}

.file-status-done {
  background: #f0fdf4;
  color: var(--clr-success);
}

.file-status-error {
  background: #fef2f2;
  color: var(--clr-danger);
}

/* Per-file download button in file-item */
.file-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-primary);
  background: var(--clr-primary-light);
  border: none;
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition);
  white-space: nowrap;
}

.file-download-btn:hover {
  background: #dbeafe;
}

/* progress bar */
.progress-bar-wrap {
  height: 4px;
  background: var(--clr-border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 4px;
  transition: width 0.4s ease;
  width: 0%;
}

/* ===================================
   HOW TO CONVERT — 3 STEP CARDS
=================================== */
.how-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.how-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.how-card-number {
  font-size: 4rem;
  font-weight: 800;
  color: var(--clr-primary-light);
  position: absolute;
  top: -0.75rem;
  right: 0.75rem;
  line-height: 1;
  user-select: none;
}

.how-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.how-card p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
}

/* ===================================
   BREADCRUMB
=================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  padding-block: 0.875rem;
  flex-wrap: wrap;
  justify-content: center;
}

.breadcrumb a {
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--clr-primary);
}

.breadcrumb-sep {
  color: var(--clr-border);
}

.breadcrumb-current {
  color: var(--clr-text);
  font-weight: 500;
}

/* ===================================
   BLOG
=================================== */
/* Blog listing page */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.blog-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition);
}

.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.blog-card-thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--clr-primary-light), #e0f2fe);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--clr-primary);
}

.blog-card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.blog-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-primary);
  background: var(--clr-primary-light);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  width: fit-content;
}

.blog-card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--clr-text);
  display: block;
}

.blog-card-title:hover {
  color: var(--clr-primary);
}

.blog-card-meta {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  margin-top: auto;
}

.blog-card-excerpt {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}

.blog-card-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.blog-card-link:hover {
  gap: 0.5rem;
}

/* Blog post article */
.post-article {
  max-width: 800px;
  margin-inline: auto;
  padding-block: 2.5rem 4rem;
}

.post-header {
  margin-bottom: 2rem;
  text-align: center;
}

.post-heading {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-top: 0.5rem;
}

.post-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  margin-top: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}

.post-meta-sep {
  color: var(--clr-border);
}

.post-divider {
  border: none;
  border-top: 1px solid var(--clr-border);
  margin: 1.5rem 0;
}

.post-article .article-body {
  font-size: 1rem;
  line-height: 1.75;
  color: #374151;
}

.article-body h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
}

.article-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

.article-body p {
  margin-bottom: 1rem;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.article-body li {
  margin-bottom: 0.25rem;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body a {
  color: var(--clr-primary);
  text-decoration: underline;
}

.article-body strong {
  font-weight: 600;
}

.article-body code {
  background: var(--clr-bg);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: monospace;
}

/* Related posts */
.related-posts {
  padding-block: 3rem 4rem;
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

/* ===================================
   FOOTER
=================================== */
.site-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding-block: 3rem 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.75fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-brand-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary);
}

.footer-brand-desc {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-text-muted);
  margin-bottom: 0.875rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--clr-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
}

/* ===================================
   TOAST / NOTIFICATION
=================================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--clr-text);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  box-shadow: var(--shadow-lg);
  animation: slideInRight 0.25s ease;
}

.toast.success {
  background: var(--clr-success);
}

.toast.error {
  background: var(--clr-danger);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(1rem);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===================================
   HERO SECTION (HOMEPAGE)
=================================== */
.hero {
  padding-block: 2.5rem 2rem;
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, var(--clr-bg) 100%);
  border-bottom: 1px solid var(--clr-border);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 720px;
  margin-inline: auto;
}

.hero h1 em {
  font-style: normal;
  color: var(--clr-primary);
}

.hero .hero-desc {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  max-width: 560px;
  margin: 0.875rem auto 0;
  line-height: 1.65;
}

.hero-cta {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.75rem;
}

.hero-badges {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
}

.hero-badge svg {
  color: var(--clr-success);
}

/* ===================================
   LANGUAGE DROPDOWN
=================================== */
.lang-dropdown {
  position: relative;
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 0.5rem;
  min-width: 150px;
  display: none;
  z-index: 200;
}

.lang-dropdown.open .lang-dropdown-menu {
  display: block;
}

.lang-option {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background var(--transition);
  color: var(--clr-text);
}

.lang-option:hover {
  background: var(--clr-bg);
  color: var(--clr-primary);
}

/* ===================================
   RESPONSIVE
=================================== */
@media (max-width: 900px) {
  .converter-layout {
    grid-template-columns: 1fr;
  }

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

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

  .how-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--clr-surface);
    border-bottom: 1px solid var(--clr-border);
    padding: 1rem 1.5rem;
    gap: 0.25rem;
    z-index: 99;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

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

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

  .steps-row {
    flex-direction: column;
    gap: 1.5rem;
  }

  .steps-row::before {
    display: none;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  /* On mobile: stack converter layout — options panel first so buttons visible without scroll */
  .converter-layout {
    grid-template-columns: 1fr;
  }

  .converter-layout>.options-panel,
  .converter-layout>div:last-child {
    order: -1;
  }

  /* Compact options panel on mobile */
  .options-panel {
    gap: 0.875rem;
    padding: 1rem;
  }

  .dropzone {
    min-height: 160px;
    padding: 1.5rem 1rem;
  }
}