/* ============================================================
   PDFTools — Design System
   ============================================================ */
:root {
  --color-primary:     #4F46E5;
  --color-secondary:   #7C3AED;
  --color-accent:      #06B6D4;
  --color-success:     #10B981;
  --color-danger:      #EF4444;

  --bg:                #F9FAFB;
  --bg-soft:           #F3F4F6;
  --surface:           #FFFFFF;
  --surface-alt:       #FFFFFF;
  --text:              #0F172A;
  --text-muted:        #475569;
  --border:            rgba(15, 23, 42, 0.08);

  --glass-bg:          rgba(255, 255, 255, 0.55);
  --glass-border:      rgba(255, 255, 255, 0.6);
  --glass-blur:        blur(14px);

  --shadow-sm:         0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:         0 8px 32px rgba(79,70,229,0.15);
  --shadow-lg:         0 20px 60px rgba(79,70,229,0.25);

  --radius-sm:         8px;
  --radius-md:         16px;
  --radius-lg:         24px;

  --font-main:         'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --ease-smooth:       cubic-bezier(0.4, 0, 0.2, 1);
  --transition:        300ms var(--ease-smooth);

  --header-h:          76px;
  --header-h-compact:  56px;
}

html[data-theme="dark"] {
  --bg:                #0F172A;
  --bg-soft:           #0B1222;
  --surface:           #1E293B;
  --surface-alt:       #172033;
  --text:              #F1F5F9;
  --text-muted:        #94A3B8;
  --border:            rgba(255, 255, 255, 0.08);

  --glass-bg:          rgba(30, 41, 59, 0.55);
  --glass-border:      rgba(255, 255, 255, 0.1);
}

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

/* Global fix: ensure [hidden] always wins over flex/grid display rules.
   Without this, elements like .error-card { display: flex } ignore the
   hidden attribute and stay visible even when JS sets element.hidden = true. */
[hidden] { display: none !important; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
}

img, svg { display: block; max-width: 100%; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-secondary); }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }

h1 { font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.15; margin: 0 0 .5em; font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2.2vw, 2rem); line-height: 1.2; margin: 0 0 .6em; font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; margin: 0 0 .5em; font-weight: 600; }
h4 { font-size: 1rem; margin: 0 0 .4em; font-weight: 600; }
p  { margin: 0 0 1em; color: var(--text-muted); }

.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }

.muted { color: var(--text-muted); }
.small { font-size: 0.85rem; }
.lede { font-size: 1.125rem; color: var(--text-muted); max-width: 720px; margin-bottom: 2rem; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 18px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap; gap: 6px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface-alt); }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.9rem;
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-lg { padding: 14px 26px; font-size: 1rem; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--text); background: transparent;
  transition: background var(--transition), color var(--transition);
}
.icon-btn:hover { background: var(--surface-alt); }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}
html[data-theme="dark"] .site-header { background: rgba(15, 23, 42, 0.78); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  transition: padding var(--transition);
}
.site-header.compact .header-inner { padding: 8px 24px; }
.site-header.compact .logo-text { font-size: 1rem; }
.site-header.compact .logo-icon { width: 28px; height: 28px; }

.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 800; }
.logo-text { font-size: 1.2rem; letter-spacing: -0.01em; transition: font-size var(--transition); }
.logo-icon { transition: width var(--transition), height var(--transition); }

.main-nav { display: flex; gap: 8px; }
.main-nav a {
  color: var(--text); font-weight: 500; font-size: 0.95rem;
  padding: 8px 14px; border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  background: var(--surface-alt); color: var(--color-primary);
}

.header-actions { display: flex; align-items: center; gap: 10px; }

html[data-theme="light"] .icon-moon { display: none; }
html[data-theme="dark"]  .icon-sun  { display: none; }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 4px; }
.hamburger span {
  width: 22px; height: 2px; background: var(--text); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 900px) {
  .main-nav, .header-actions .btn { display: none; }
  .hamburger { display: inline-flex; }
}

/* ============================================================
   Mobile Drawer
   ============================================================ */
.mobile-drawer {
  position: fixed; inset: 0; z-index: 1100;
  opacity: 0; visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.mobile-drawer.open { opacity: 1; visibility: visible; }
.drawer-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.4); }
.drawer-panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(320px, 85vw);
  background: var(--surface);
  padding: 64px 24px 24px;
  transform: translateX(100%);
  transition: transform var(--transition);
  box-shadow: -10px 0 40px rgba(0,0,0,0.15);
}
.mobile-drawer.open .drawer-panel { transform: translateX(0); }
.drawer-close { position: absolute; top: 16px; right: 16px; }
.drawer-panel nav { display: flex; flex-direction: column; gap: 4px; }
.drawer-panel nav a {
  padding: 14px 16px; border-radius: var(--radius-sm);
  color: var(--text); font-weight: 500; font-size: 1rem;
}
.drawer-panel nav a:hover { background: var(--surface-alt); color: var(--color-primary); }

/* ============================================================
   Layout / Views
   ============================================================ */
main { padding-top: var(--header-h); }
.view { display: block; }
.view[hidden] { display: none; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(60px, 10vw, 120px) 0 clamp(60px, 10vw, 100px);
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(79,70,229,0.18), transparent 60%),
    radial-gradient(900px 400px at 10% 20%, rgba(6,182,212,0.15), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
  isolation: isolate;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.shape {
  position: absolute; border-radius: 40%;
  filter: blur(1px); opacity: 0.55;
  animation: float 14s var(--ease-smooth) infinite;
}
.shape-1 { width: 220px; height: 220px; top: -40px; left: -40px; background: linear-gradient(135deg, #4F46E5, #06B6D4); animation-delay: 0s; }
.shape-2 { width: 260px; height: 260px; bottom: -60px; right: -40px; background: linear-gradient(135deg, #7C3AED, #EC4899); animation-delay: -4s; }
.shape-3 { width: 160px; height: 160px; top: 30%; right: 10%; background: linear-gradient(135deg, #06B6D4, #10B981); animation-delay: -7s; }
.shape-4 { width: 180px; height: 180px; bottom: 15%; left: 8%; background: linear-gradient(135deg, #F59E0B, #EF4444); animation-delay: -10s; }

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); border-radius: 40%; }
  33%      { transform: translateY(-30px) rotate(120deg); border-radius: 45% 55% 40% 50%; }
  66%      { transform: translateY(20px) rotate(240deg); border-radius: 55% 40% 50% 45%; }
}

.hero-inner { text-align: center; position: relative; }
.pill {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  color: var(--text);
}
.hero h1 {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  max-width: 900px; margin-left: auto; margin-right: auto;
}
.hero-sub { font-size: 1.15rem; max-width: 720px; margin: 0 auto 32px; color: var(--text-muted); }
.hero-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; max-width: 600px; margin: 0 auto;
}
.hero-stats > div {
  padding: 20px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-md);
  text-align: center;
}
.hero-stats strong {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}
.hero-stats span { font-size: 0.85rem; color: var(--text-muted); }

/* ============================================================
   Category sections / Tools grid
   ============================================================ */
.category-section {
  padding: clamp(60px, 8vw, 100px) 0;
  position: relative;
}
.category-section:nth-child(even) { background: var(--bg-soft); }
.category-section .container { position: relative; }
.cat-head { max-width: 800px; margin-bottom: 40px; }
.cat-head .chip {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.8rem; font-weight: 600;
  background: linear-gradient(135deg, rgba(79,70,229,0.15), rgba(124,58,237,0.15));
  color: var(--color-primary);
  border-radius: 999px;
  margin-bottom: 12px;
}
.cat-head p { font-size: 1.02rem; max-width: 760px; }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.tool-card {
  position: relative;
  padding: 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
  transform-style: preserve-3d;
  text-align: left;
  overflow: hidden;
  width: 100%;
  color: var(--text);
}
.tool-card::before {
  content: "";
  position: absolute; inset: -1px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(79,70,229,0.3), rgba(6,182,212,0.3));
  opacity: 0; transition: opacity var(--transition);
  z-index: -1;
}
.tool-card:hover { box-shadow: var(--shadow-lg); }
.tool-card:hover::before { opacity: 1; }

.tool-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff; font-size: 1.3rem;
  margin-bottom: 14px;
  box-shadow: 0 6px 18px rgba(79,70,229,0.35);
}
.tool-card h3 { margin-bottom: 6px; color: var(--text); font-weight: 700; }
.tool-card p { font-size: 0.88rem; margin: 0; }

/* ============================================================
   Page views
   ============================================================ */
.page {
  padding: clamp(40px, 6vw, 80px) 0 80px;
  max-width: 820px;
}
.page h1 { margin-bottom: 16px; }
.page h2 { margin-top: 2em; }
.page p { font-size: 1rem; color: var(--text); }
.page p.muted { color: var(--text-muted); }
.page .mailto { font-size: 1rem; margin-bottom: 24px; }

/* Trust bar */
.trust-bar {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px; margin: 32px 0;
}
.trust-bar > div {
  padding: 22px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-md);
  text-align: center;
}
.trust-bar strong {
  display: block; color: var(--color-primary);
  font-size: 1.1rem; font-weight: 700;
  margin-bottom: 4px;
}
.trust-bar span { font-size: 0.9rem; color: var(--text-muted); }
@media (max-width: 640px) { .trust-bar { grid-template-columns: 1fr; } }

/* Contact form */
.contact-form {
  background: var(--surface);
  padding: 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  display: grid; gap: 18px;
  margin-top: 12px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-weight: 600; font-size: 0.92rem; }
.field input, .field select, .field textarea {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: inherit; font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(79,70,229,0.12);
}
.field.invalid input, .field.invalid select, .field.invalid textarea {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 4px rgba(239,68,68,0.1);
}
.field textarea { resize: vertical; min-height: 120px; }
.err { color: var(--color-danger); font-size: 0.82rem; min-height: 1em; }

/* Success card */
.success-card {
  background: var(--surface);
  padding: 36px 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  text-align: center;
  margin-top: 16px;
  animation: popIn 400ms var(--ease-smooth);
}
.success-card .check {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: rgba(16,185,129,0.14);
  color: var(--color-success);
  font-size: 2.4rem; line-height: 72px;
  margin: 0 auto 12px;
}
.success-card h3 { color: var(--text); margin-bottom: 8px; }
.success-card .actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 16px; }

@keyframes popIn {
  0%   { opacity: 0; transform: scale(0.9); }
  100% { opacity: 1; transform: scale(1); }
}

/* ============================================================
   Modal
   ============================================================ */
.modal {
  position: fixed; inset: 0; z-index: 2000;
  opacity: 0; visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.modal.open { opacity: 1; visibility: visible; }
.modal-overlay {
  position: absolute; inset: 0;
  background: rgba(15,23,42,0.55);
  backdrop-filter: blur(4px);
}
.modal-panel {
  position: absolute;
  top: 50%; left: 50%;
  width: min(680px, 92vw);
  max-height: 90vh;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transform: translate(-50%, -50%) scale(0.95);
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
}
.modal.open .modal-panel {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}
.modal-header {
  padding: 18px 22px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(79,70,229,0.08), rgba(6,182,212,0.08));
}
.modal-header h4 { font-size: 1.1rem; font-weight: 700; margin: 0; }
.modal-priv { font-size: 0.78rem; color: var(--text-muted); margin: 2px 0 0; }
.modal-body { padding: 24px; overflow-y: auto; }
.stage { animation: fadeIn 300ms var(--ease-smooth); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* Dropzone */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: var(--bg-soft);
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--color-primary);
  background: rgba(79,70,229,0.05);
}
.dz-icon { font-size: 3rem; margin-bottom: 8px; }
.dz-link { color: var(--color-primary); font-weight: 600; text-decoration: underline; }
.dz-accept { font-size: 0.82rem; color: var(--text-muted); margin-top: 14px; }

/* File preview */
.file-preview {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
  border: 1px solid var(--border);
  font-size: 0.92rem;
}
.file-preview .f-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff; display: grid; place-items: center; font-size: 0.75rem; font-weight: 700;
}
.file-preview .f-meta { display: flex; flex-direction: column; line-height: 1.3; }
.file-preview .f-meta small { color: var(--text-muted); }
.file-preview .f-remove {
  margin-left: auto; color: var(--color-danger); font-size: 1.2rem;
  width: 28px; height: 28px; border-radius: 50%;
}
.file-preview .f-remove:hover { background: rgba(239,68,68,0.1); }

/* Config fields */
.config-fields { display: grid; gap: 14px; margin-bottom: 18px; }
.config-fields label { font-weight: 600; font-size: 0.9rem; display: block; margin-bottom: 4px; }
.config-fields input[type="text"],
.config-fields input[type="password"],
.config-fields input[type="number"],
.config-fields input[type="date"],
.config-fields input[type="email"],
.config-fields select,
.config-fields textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: inherit; font-size: 0.95rem;
}
.config-fields textarea { min-height: 90px; resize: vertical; }
.config-fields .hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }
.config-fields .inline { display: flex; gap: 10px; }
.config-fields .inline > * { flex: 1; }

/* Progress */
.progress-wrap { margin-top: 16px; }
.progress-bar {
  height: 8px; background: var(--bg-soft);
  border-radius: 999px; overflow: hidden;
}
.progress-bar span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  width: 10%;
  transition: width var(--transition);
}
.progress-text { text-align: center; font-size: 0.85rem; margin-top: 8px; }

.error-card {
  margin-top: 16px;
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.3);
  color: var(--color-danger);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: flex; flex-direction: column; gap: 8px;
}
.error-card .btn-ghost { align-self: flex-start; color: var(--color-danger); border-color: rgba(239,68,68,0.4); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: #0F172A;
  color: #E2E8F0;
  margin-top: 60px;
  padding: 60px 0 0;
}
html[data-theme="light"] .site-footer .logo-text,
html[data-theme="light"] .site-footer h5 { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.site-footer .col h5 {
  font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 16px; color: #fff; font-weight: 700;
}
.site-footer .col ul { display: flex; flex-direction: column; gap: 10px; }
.site-footer .col a { color: #94A3B8; font-size: 0.92rem; }
.site-footer .col a:hover { color: #fff; }
.site-footer .muted { color: #94A3B8; }
.site-footer .logo { color: #fff; }
.site-footer .logo-text { color: #fff; }

.socials { display: flex; gap: 8px; margin-bottom: 14px; }
.socials a {
  width: 36px; height: 36px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.06);
  color: #cbd5e1;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.socials a:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 18px 24px;
  text-align: center;
  font-size: 0.85rem;
  color: #94A3B8;
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .modal-panel { width: 94vw; max-height: 94vh; border-radius: var(--radius-md); }
  .modal-body { padding: 18px; }
  .dropzone { padding: 30px 16px; }
  .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 480px) {
  .tools-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; }
  .contact-form { padding: 20px; }
}

/* Fade-in on lazy visibility */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 600ms var(--ease-smooth), transform 600ms var(--ease-smooth); }
.reveal.visible { opacity: 1; transform: none; }