/* ═══════════════════════════════════════════════════════════════
   ToolKit Pro — Design System
   Aesthetic: Clean editorial with warm accents, editorial typography
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Variables ─────────────────────────────────────────────── */
:root {
  --clr-bg:        #FAFAF8;
  --clr-surface:   #FFFFFF;
  --clr-border:    #E8E6E1;
  --clr-muted:     #F2F0EB;

  --clr-text:      #1A1916;
  --clr-text-2:    #5C5A56;
  --clr-text-3:    #9B9891;

  --clr-accent:    #E8621A;
  --clr-accent-2:  #F0882A;
  --clr-accent-bg: #FEF3EA;

  --clr-green:     #2D7A4F;
  --clr-blue:      #2563EB;
  --clr-purple:    #7C3AED;
  --clr-red:       #DC2626;

  --font-display:  'Syne', sans-serif;
  --font-body:     'DM Sans', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:  0 12px 40px rgba(0,0,0,.1),  0 4px 8px rgba(0,0,0,.04);

  --transition: 200ms cubic-bezier(.4,0,.2,1);
  --max-w: 1200px;
}

/* ── Reset ────────────────────────────────────────────────────── */
*, *::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(--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; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ── Typography ──────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--clr-text);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }
p  { color: var(--clr-text-2); }
.lead { font-size: 1.15rem; font-weight: 300; color: var(--clr-text-2); max-width: 56ch; }

/* ── Layout Utilities ────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.flex   { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1  { gap: .5rem; }
.gap-2  { gap: 1rem; }
.gap-3  { gap: 1.5rem; }
.text-center { text-align: center; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ── Navbar ──────────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,250,248,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  padding: .875rem 0;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: .5rem;
  white-space: nowrap;
}
.nav-logo span { color: var(--clr-accent); }
.nav-logo-icon {
  width: 32px; height: 32px;
  background: var(--clr-accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: .85rem;
}
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-text-2);
  transition: color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--clr-accent); }
.nav-cta {
  background: var(--clr-text);
  color: white !important;
  padding: .5rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: .875rem;
  font-weight: 500;
  transition: background var(--transition) !important;
}
.nav-cta:hover { background: var(--clr-accent) !important; color: white !important; }
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; padding: .25rem;
}
.nav-hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--clr-text); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.mobile-menu {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 99;
  background: var(--clr-surface);
  padding: 5rem 2rem 2rem;
  flex-direction: column; gap: 1.5rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 700;
  color: var(--clr-text); border-bottom: 1px solid var(--clr-border);
  padding-bottom: 1rem;
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  padding: 6rem 0 4rem;
  background: linear-gradient(160deg, #FAFAF8 0%, #FEF3EA 60%, #FAFAF8 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: -50%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(232,98,26,.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { max-width: 680px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--clr-accent-bg);
  color: var(--clr-accent);
  border: 1px solid rgba(232,98,26,.2);
  padding: .375rem .875rem;
  border-radius: 100px;
  font-size: .8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .06em;
  margin-bottom: 1.5rem;
}
.hero h1 { margin-bottom: 1rem; }
.hero h1 span { color: var(--clr-accent); }
.hero .lead { margin-bottom: 2.5rem; }
.hero-search {
  display: flex; gap: .75rem; max-width: 520px;
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: .375rem .375rem .375rem 1.25rem;
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition);
}
.hero-search:focus-within { border-color: var(--clr-accent); }
.hero-search input {
  flex: 1; border: none; outline: none;
  background: transparent; font-size: 1rem;
  color: var(--clr-text);
}
.hero-search input::placeholder { color: var(--clr-text-3); }
.hero-stats {
  display: flex; gap: 2.5rem; margin-top: 3rem;
  padding-top: 2rem; border-top: 1px solid var(--clr-border);
}
.stat-item .stat-number {
  font-family: var(--font-display);
  font-size: 1.75rem; font-weight: 800;
  color: var(--clr-text);
}
.stat-item .stat-label { font-size: .85rem; color: var(--clr-text-3); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .625rem 1.375rem;
  border-radius: var(--radius-md);
  font-size: .9rem; font-weight: 500;
  border: none; outline: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--clr-accent);
  color: white;
}
.btn-primary:hover { background: var(--clr-accent-2); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-dark   { background: var(--clr-text); color: white; }
.btn-dark:hover { background: #333; transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--clr-border);
  color: var(--clr-text-2);
}
.btn-outline:hover { border-color: var(--clr-accent); color: var(--clr-accent); }
.btn-ghost { background: var(--clr-muted); color: var(--clr-text-2); }
.btn-ghost:hover { background: var(--clr-border); }
.btn-sm { padding: .4rem 1rem; font-size: .825rem; }
.btn-lg { padding: .875rem 2rem; font-size: 1rem; }

/* ── Section Headers ─────────────────────────────────────────── */
.section-header { text-align: center; max-width: 600px; margin: 0 auto 3rem; }
.section-header .eyebrow {
  display: inline-block;
  font-size: .78rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--clr-accent);
  margin-bottom: .75rem;
}
.section-header h2 { margin-bottom: .75rem; }
.section-header p { color: var(--clr-text-2); }

/* ── Tool Cards ──────────────────────────────────────────────── */
.tool-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: .875rem;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-accent, var(--clr-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.tool-card:hover { border-color: transparent; box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.tool-card:hover::before { transform: scaleX(1); }
.tool-card-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.375rem;
  background: var(--icon-bg, var(--clr-accent-bg));
  flex-shrink: 0;
}
.tool-card h3 { font-size: 1rem; margin: 0; }
.tool-card p  { font-size: .875rem; color: var(--clr-text-3); flex: 1; margin: 0; }
.tool-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: .75rem; border-top: 1px solid var(--clr-muted);
}
.tool-tag {
  font-size: .72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .05em;
  color: var(--clr-text-3);
  background: var(--clr-muted);
  padding: .2rem .6rem; border-radius: 100px;
}
.tool-arrow { color: var(--clr-text-3); font-size: .875rem; transition: transform var(--transition); }
.tool-card:hover .tool-arrow { transform: translateX(4px); color: var(--clr-accent); }

/* Category colors */
.cat-calc  { --card-accent: #E8621A; --icon-bg: #FEF3EA; }
.cat-text  { --card-accent: #2563EB; --icon-bg: #EFF6FF; }
.cat-dev   { --card-accent: #7C3AED; --icon-bg: #F5F3FF; }
.cat-media { --card-accent: #059669; --icon-bg: #ECFDF5; }
.cat-util  { --card-accent: #D97706; --icon-bg: #FFFBEB; }

/* ── Category Filter Bar ─────────────────────────────────────── */
.filter-bar {
  display: flex; align-items: center; gap: .625rem;
  flex-wrap: wrap; margin-bottom: 2rem;
}
.filter-btn {
  padding: .45rem 1.1rem;
  border-radius: 100px;
  border: 1.5px solid var(--clr-border);
  background: transparent;
  font-size: .85rem; font-weight: 500;
  color: var(--clr-text-2);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--clr-accent);
  background: var(--clr-accent);
  color: white;
}

/* ── Tool Interface (individual tool pages) ──────────────────── */
.tool-page-header {
  padding: 3.5rem 0 2rem;
  background: linear-gradient(135deg, #FAFAF8 0%, #FEF3EA 100%);
  border-bottom: 1px solid var(--clr-border);
}
.breadcrumb {
  display: flex; align-items: center; gap: .5rem;
  font-size: .825rem; color: var(--clr-text-3);
  margin-bottom: 1.25rem;
}
.breadcrumb a { color: var(--clr-accent); }
.breadcrumb span { color: var(--clr-text-3); }

.tool-workspace {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
  padding: 2.5rem 0;
}
.tool-panel {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.tool-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--clr-border);
  background: var(--clr-muted);
}
.tool-panel-header h4 { margin: 0; font-size: .875rem; color: var(--clr-text-2); }
.tool-panel-body { padding: 1.5rem; }

/* Form elements */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block; margin-bottom: .5rem;
  font-size: .875rem; font-weight: 500;
  color: var(--clr-text);
}
.form-input {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-bg);
  color: var(--clr-text);
  font-size: .9rem;
  transition: border-color var(--transition);
  outline: none;
}
.form-input:focus { border-color: var(--clr-accent); background: var(--clr-surface); }
.form-textarea {
  min-height: 200px; resize: vertical;
  font-family: var(--font-mono);
  font-size: .825rem; line-height: 1.6;
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239B9891' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  padding-right: 2.5rem;
}

.result-box {
  background: var(--clr-muted);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: .825rem; line-height: 1.7;
  color: var(--clr-text);
  min-height: 80px;
  white-space: pre-wrap;
  word-break: break-all;
  position: relative;
}
.result-actions {
  display: flex; gap: .625rem; margin-top: .75rem; flex-wrap: wrap;
}

/* Stats row for minifiers */
.stats-row {
  display: flex; gap: 1rem; flex-wrap: wrap;
  margin-bottom: 1rem;
}
.stat-badge {
  display: flex; flex-direction: column;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: .5rem .875rem;
  font-size: .8rem;
}
.stat-badge strong { font-size: 1rem; font-weight: 700; color: var(--clr-green); }

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}
.sidebar-card h4 { margin-bottom: 1rem; font-size: .9rem; }
.related-tool-link {
  display: flex; align-items: center; gap: .75rem;
  padding: .625rem .5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  font-size: .875rem; color: var(--clr-text-2);
  border-bottom: 1px solid var(--clr-muted);
}
.related-tool-link:last-child { border-bottom: none; }
.related-tool-link:hover { background: var(--clr-muted); color: var(--clr-accent); }
.related-tool-icon { font-size: 1rem; }

/* Ad placeholders */
.ad-placeholder {
  background: var(--clr-muted);
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: var(--clr-text-3); font-size: .75rem;
  text-align: center; padding: 1rem;
  min-height: 90px;
  gap: .25rem;
}
.ad-placeholder.ad-banner  { min-height: 90px; }
.ad-placeholder.ad-sidebar { min-height: 250px; }
.ad-placeholder.ad-footer  { min-height: 90px; }
.ad-label { font-weight: 600; font-size: .65rem; text-transform: uppercase; letter-spacing: .05em; }

/* ── Why Choose Us ───────────────────────────────────────────── */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.feature-item {
  text-align: center; padding: 2rem 1.5rem;
}
.feature-icon {
  width: 56px; height: 56px;
  background: var(--clr-accent-bg);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1.25rem;
}
.feature-item h3 { font-size: 1.1rem; margin-bottom: .5rem; }

/* ── FAQ ─────────────────────────────────────────────────────── */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  margin-bottom: .75rem;
  overflow: hidden;
}
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.125rem 1.5rem;
  background: var(--clr-surface);
  cursor: pointer;
  font-weight: 500; font-size: .95rem;
  transition: background var(--transition);
  user-select: none;
  gap: 1rem;
}
.faq-question:hover { background: var(--clr-muted); }
.faq-icon { font-size: 1.1rem; color: var(--clr-accent); transition: transform var(--transition); flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  display: none; padding: 0 1.5rem 1.25rem;
  background: var(--clr-surface);
  font-size: .9rem; color: var(--clr-text-2);
}
.faq-item.open .faq-answer { display: block; }

/* ── Footer ──────────────────────────────────────────────────── */
footer {
  background: var(--clr-text);
  color: rgba(255,255,255,.7);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem; margin-bottom: 3rem;
}
.footer-brand .nav-logo { color: white; }
.footer-brand p { font-size: .875rem; margin-top: .75rem; line-height: 1.7; }
.footer-col h5 {
  font-family: var(--font-display);
  font-size: .875rem; font-weight: 700;
  color: white; text-transform: uppercase; letter-spacing: .08em;
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .625rem; }
.footer-col a { font-size: .875rem; color: rgba(255,255,255,.6); transition: color var(--transition); }
.footer-col a:hover { color: var(--clr-accent-2); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: .8rem; color: rgba(255,255,255,.4);
  flex-wrap: wrap; gap: 1rem;
}
.footer-bottom-links { display: flex; gap: 1.5rem; }
.footer-bottom-links a { color: rgba(255,255,255,.4); transition: color var(--transition); }
.footer-bottom-links a:hover { color: white; }

/* ── Toast / Notification ────────────────────────────────────── */
.toast {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 999;
  background: var(--clr-text); color: white;
  padding: .75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: .875rem; font-weight: 500;
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: all .3s cubic-bezier(.4,0,.2,1);
  display: flex; align-items: center; gap: .5rem;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { background: var(--clr-green); }
.toast.error   { background: var(--clr-red); }

/* ── Loading Spinner ─────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Info / Content Sections ─────────────────────────────────── */
.info-section { background: var(--clr-muted); }
.content-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.content-card h2, .content-card h3 { margin-bottom: .75rem; }
.content-card p { margin-bottom: 1rem; }
.content-card ul { padding-left: 1.5rem; color: var(--clr-text-2); }
.content-card ul li { margin-bottom: .5rem; }

/* ── Page hero for inner pages ───────────────────────────────── */
.inner-hero {
  background: linear-gradient(135deg, #FAFAF8 0%, #FEF3EA 100%);
  border-bottom: 1px solid var(--clr-border);
  padding: 4rem 0 3rem;
  text-align: center;
}
.inner-hero h1 { margin-bottom: .75rem; }
.inner-hero .lead { margin: 0 auto; }

/* ── QR Preview ──────────────────────────────────────────────── */
.qr-preview {
  display: flex; justify-content: center;
  padding: 1.5rem;
  background: var(--clr-muted);
  border-radius: var(--radius-md);
  min-height: 200px;
  align-items: center;
}
.qr-preview img { max-width: 200px; border-radius: var(--radius-sm); }
.qr-empty { color: var(--clr-text-3); font-size: .875rem; text-align: center; }

/* ── Color picker ────────────────────────────────────────────── */
.color-row { display: flex; gap: 1rem; align-items: center; }
.color-input {
  width: 48px; height: 38px;
  padding: 2px; border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ── Markdown preview ────────────────────────────────────────── */
.md-preview {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  font-size: .9rem; line-height: 1.8;
  min-height: 200px;
}
.md-preview h1,.md-preview h2,.md-preview h3 { font-family: var(--font-body); letter-spacing: 0; }
.md-preview code { font-family: var(--font-mono); background: var(--clr-muted); padding: .1em .3em; border-radius: 3px; }
.md-preview pre  { background: var(--clr-muted); padding: 1rem; border-radius: var(--radius-sm); overflow-x: auto; }
.md-preview pre code { background: none; padding: 0; }
.md-preview blockquote { border-left: 3px solid var(--clr-accent); padding-left: 1rem; margin-left: 0; color: var(--clr-text-2); }

/* ── Image upload area ───────────────────────────────────────── */
.upload-area {
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--clr-bg);
}
.upload-area:hover, .upload-area.drag-over {
  border-color: var(--clr-accent);
  background: var(--clr-accent-bg);
}
.upload-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.upload-area p { font-size: .9rem; color: var(--clr-text-3); }
.upload-area input[type=file] { display: none; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .tool-workspace { grid-template-columns: 1fr; }
  .sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 1.5rem; }
  .sidebar { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { padding: 4rem 0 3rem; }
  .section { padding: 3.5rem 0; }
}