/* ========================================
   IP Toolkit Pro - Warm Light Theme
   Clean, professional, user-friendly design
   ======================================== */

/* ========= CSS Variables ========= */
:root {
  /* Warm Primary - Teal/Emerald */
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #14b8a6;
  --primary-bg: rgba(13, 148, 136, 0.08);
  
  /* Accent - Warm Orange */
  --accent: #ea580c;
  --accent-light: #fb923c;
  --accent-bg: rgba(234, 88, 12, 0.08);
  
  /* Backgrounds */
  --bg: #fafaf9;
  --bg-alt: #f5f5f4;
  --card: #ffffff;
  
  /* Text */
  --text: #292524;
  --text-strong: #1c1917;
  --muted: #78716c;
  --muted-light: #a8a29e;
  
  /* Borders & Shadows */
  --border: rgba(28, 25, 23, 0.08);
  --border-strong: rgba(28, 25, 23, 0.15);
  --ring: rgba(13, 148, 136, 0.2);
  --shadow: 0 4px 20px rgba(28, 25, 23, 0.06);
  --shadow-lg: 0 12px 36px rgba(28, 25, 23, 0.1);
  
  /* Status */
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --info: #0891b2;
  
  /* Radius */
  --radius: 14px;
  --radius-sm: 10px;
  --radius-xs: 6px;
}

/* Dark theme support */
[data-theme="dark"] {
  --bg: #0c0a09;
  --bg-alt: #1c1917;
  --card: #1c1917;
  --text: #e7e5e4;
  --text-strong: #fafaf9;
  --muted: #a8a29e;
  --muted-light: #78716c;
  --border: rgba(231, 229, 228, 0.1);
  --border-strong: rgba(231, 229, 228, 0.15);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.4);
}

[data-contrast="high"] {
  --ring: rgba(13, 148, 136, 0.5);
  --border: currentColor;
}

/* ========= Base Reset ========= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: 
    radial-gradient(ellipse at 10% 0%, rgba(13, 148, 136, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 100%, rgba(234, 88, 12, 0.06) 0%, transparent 50%),
    var(--bg);
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: var(--radius-xs); }

/* ========= NAVBAR ========= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 999;
  background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.9));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

[data-theme="dark"] .navbar {
  background: linear-gradient(180deg, rgba(28,25,23,0.95), rgba(28,25,23,0.9));
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  position: relative;
}

.brand {
  color: var(--text-strong);
  text-decoration: none;
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 0.8rem;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

/* Hamburger */
.hamburger {
  display: none;
  width: 42px;
  height: 36px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.2rem;
}

/* Nav Links */
.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links > a {
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.nav-links > a:hover,
.nav-links > a.active {
  background: var(--primary-bg);
  color: var(--primary);
}

/* Dropdown */
.nav-dropdown { position: relative; }

.nav-dropbtn {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.nav-dropbtn:hover { background: var(--bg-alt); }

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 200px;
  z-index: 1000;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  box-shadow: var(--shadow-lg);
}

.nav-dropdown.open > .nav-dropdown-menu { display: block; }

.nav-dropdown-menu a {
  display: block;
  padding: 10px 12px;
  color: var(--text);
  border-radius: var(--radius-xs);
  font-size: 0.875rem;
  transition: all 0.15s;
}

.nav-dropdown-menu a:hover {
  background: var(--primary-bg);
  color: var(--primary);
}


/* Mobile Nav */
@media (max-width: 900px) {
  .hamburger { display: flex; align-items: center; justify-content: center; }
  
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    left: 12px;
    right: 12px;
    top: calc(100% + 6px);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
  }
  
  .nav-links.show { display: flex; }
  
  .nav-dropdown-menu {
    position: static;
    min-width: unset;
    background: var(--bg-alt);
    border: none;
    box-shadow: none;
    margin-top: 4px;
    border-radius: var(--radius-sm);
  }
}

/* ========= LAYOUT ========= */
main {
  display: flex;
  justify-content: center;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 1200px;
  display: grid;
  gap: 20px;
}

/* ========= PANELS ========= */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  margin: 0;
  font-size: 1rem;
  color: var(--text-strong);
}

/* ========= PILLS ========= */
.pill {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--primary-bg);
  color: var(--primary);
  border: 1px solid rgba(13, 148, 136, 0.2);
  font-size: 0.75rem;
  font-weight: 600;
}

/* ========= FORMS ========= */
.form {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.form-grid {
  display: grid;
  gap: 14px;
  padding: 18px;
}

@media (min-width: 768px) {
  .form-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
  .form.grid-5 { grid-template-columns: repeat(5, 1fr); align-items: end; }
}

label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

input[type="text"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: all 0.2s;
}

input::placeholder, textarea::placeholder { color: var(--muted-light); }

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
  background: var(--card);
}

textarea { min-height: 100px; resize: vertical; }

/* ========= BUTTONS ========= */
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0 18px 18px;
}

.btn {
  padding: 11px 18px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(13, 148, 136, 0.35);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--accent), #c2410c);
  color: #fff;
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.3);
}

.btn-secondary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(234, 88, 12, 0.35);
}

.btn-ghost {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover { background: var(--bg-alt); }

.button {
  padding: 11px 20px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.25);
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(13, 148, 136, 0.3);
}

.button.secondary {
  background: var(--card);
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: none;
}

.button.is-loading {
  position: relative;
  padding-right: 40px;
  opacity: 0.8;
  cursor: wait;
}

.button.is-loading::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}

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

/* ========= RESULTS GRID ========= */
.grid {
  display: grid;
  gap: 12px;
  padding: 14px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  position: relative;
}

.k {
  font-size: 0.7rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.v {
  font-family: 'SF Mono', ui-monospace, Consolas, monospace;
  font-size: 0.9375rem;
  color: var(--text-strong);
  word-break: break-word;
  font-weight: 600;
}

.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 0.65rem;
  padding: 3px 8px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--primary);
  cursor: pointer;
  font-weight: 600;
}

.copy:hover { background: var(--primary-bg); }

.copied { animation: pop 0.3s ease; }
@keyframes pop { 0% { transform: scale(1); } 50% { transform: scale(1.1); } 100% { transform: scale(1); } }

/* ========= BITS VISUALIZATION ========= */
.bits {
  display: grid;
  grid-template-columns: repeat(32, 1fr);
  gap: 2px;
  padding: 12px 14px;
}

.bit {
  text-align: center;
  padding: 6px 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font: 600 10px/1 ui-monospace, monospace;
  color: var(--muted);
}

.bit.net {
  background: linear-gradient(135deg, var(--primary-bg), rgba(13, 148, 136, 0.15));
  color: var(--primary);
  border-color: rgba(13, 148, 136, 0.3);
}

.bit.host {
  background: linear-gradient(135deg, var(--accent-bg), rgba(234, 88, 12, 0.15));
  color: var(--accent);
  border-color: rgba(234, 88, 12, 0.3);
}

/* ========= HERO SECTION ========= */
.hero {
  padding: 32px 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 12px;
  color: var(--text-strong);
}

.hero-sub {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.hero-meta, .hero-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(13, 148, 136, 0.2);
}

.chip.accent {
  background: var(--accent-bg);
  color: var(--accent);
  border-color: rgba(234, 88, 12, 0.2);
}

.hero-panel {
  background: linear-gradient(135deg, var(--primary-bg), var(--accent-bg));
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
}

.hero-panel h3 { margin-bottom: 10px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.stat-item {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
}

.stat-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.stat-item h5 {
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 2px;
}

.stat-item p {
  font-weight: 700;
  color: var(--text-strong);
  font-size: 0.875rem;
}

/* ========= TOOLS GRID ========= */
.tools-section {
  padding: 24px 20px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 24px;
}

.section-header h2 {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.section-header p { color: var(--muted); }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 20px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  position: relative;
}

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

.tool-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-bg), var(--accent-bg));
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  font-size: 1.2rem;
}

.tool-card h4 {
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--text-strong);
}

.tool-card p {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.5;
  margin-bottom: 12px;
}

.tool-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.8rem;
}

.tool-link::after {
  content: '→';
  transition: transform 0.2s;
}

.tool-card:hover .tool-link::after { transform: translateX(3px); }

.category-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
}

.category-badge.ipv4 { background: rgba(13, 148, 136, 0.1); color: var(--primary); }
.category-badge.ipv6 { background: rgba(124, 58, 237, 0.1); color: #7c3aed; }
.category-badge.tools { background: rgba(234, 88, 12, 0.1); color: var(--accent); }
.category-badge.network { background: rgba(8, 145, 178, 0.1); color: #0891b2; }

/* ========= ERROR ========= */
.error {
  display: none;
  margin: 0 18px 18px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(220, 38, 38, 0.08);
  color: var(--danger);
  border: 1px solid rgba(220, 38, 38, 0.2);
  font-size: 0.875rem;
}

.error.show { display: block; }

/* ========= TABLES ========= */
.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.tbl th, .tbl td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.tbl th {
  background: var(--bg-alt);
  font-weight: 600;
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
}

/* ========= RESULT SECTION ========= */
.result { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 16px; }
.result.hidden { display: none; }

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 18px 14px;
}

.result-status { font-size: 0.75rem; color: var(--muted); }
.result-error { margin: 0 18px 14px; color: var(--danger); font-size: 0.875rem; }

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  padding: 0 18px 18px;
}

.stat {
  padding: 14px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
}

.stat h5 {
  margin: 0 0 4px;
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
}

.stat p { margin: 0; font-weight: 700; color: var(--text-strong); }

/* ========= FAQ ========= */
.faq-section {
  padding: 24px 20px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title { font-size: 1.25rem; margin-bottom: 14px; }

.faq-intro {
  max-width: 700px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.faq-item h4 { margin: 0 0 8px; font-size: 0.9rem; }
.faq-item p { margin: 0; color: var(--muted); font-size: 0.8rem; line-height: 1.5; }

/* ========= FOOTER ========= */
.shortcuts-footer, footer:not(.site-footer) {
  max-width: 1200px;
  margin: 16px auto;
  padding: 10px 16px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.75rem;
}

.help-links a { margin-right: 14px; color: var(--primary); font-weight: 500; }

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--card);
  margin-top: 24px;
}

.ft-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px;
  display: grid;
  gap: 24px;
}

.ft-brand { display: flex; flex-direction: column; gap: 6px; }
.ft-logo { font-weight: 800; color: var(--text-strong); text-decoration: none; }
.ft-tagline { margin: 0; color: var(--muted); font-size: 0.8rem; }

.ft-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

@media (max-width: 980px) { .ft-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 640px) { .ft-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.ft-col {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.ft-head {
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--text-strong);
  border: none;
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
}

.ft-links { list-style: none; margin: 10px 0 0; padding: 0; }
.ft-links li { margin: 3px 0; }
.ft-links a { color: var(--muted); font-size: 0.75rem; padding: 3px 0; display: inline-block; }
.ft-links a:hover { color: var(--primary); }

.ft-bottom {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-size: 0.75rem;
}

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

.ft-ico {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  text-decoration: none;
}

.ft-ico:hover { color: var(--primary); border-color: var(--primary); }

/* Back to top */
.back-to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-strong);
  box-shadow: var(--shadow);
  cursor: pointer;
  display: none;
  font-size: 1.1rem;
}

.back-to-top.show { display: grid; place-items: center; }
.back-to-top:hover { border-color: var(--primary); color: var(--primary); }

/* ========= ROW LAYOUT ========= */
.row {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) { .row { grid-template-columns: 2fr 1fr; } }

/* ========= SECTION ========= */
.section { padding: 20px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.75rem;
  border: 1px solid var(--border);
}

/* ========= PRINT ========= */
@media print {
  body { background: #fff; color: #000; }
/* ========= REDUCED MOTION ========= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ========= RESPONSIVE BITS ========= */
@media (max-width: 640px) {
  .bits { grid-template-columns: repeat(16, 1fr); }
}

/* ========= ANIMATION ========= */
.fade-in { animation: fadeIn 0.4s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}