/* =========================================================
   Background Remover — stylesheet
   Design tokens, layout, components
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Karla:wght@400;500;600;700;800&display=swap');

:root{
  /* ---- color tokens (light) ---- */
  --bg: #FAF9FF;
  --bg-alt: #F1EDFC;
  --surface: #FFFFFF;
  --surface-raised: #FFFFFF;
  --text: #1E1A2E;
  --text-muted: #5B5573;
  --text-faint: #8C86A3;
  --border: #E6E1F7;
  --border-strong: #D2C9F0;

  --primary: #6D28D9;
  --primary-dark: #55199E;
  --primary-light: #EDE7FC;
  --accent: #0891B2;
  --accent-light: #D6F4FA;
  --danger: #B3413A;
  --danger-light: #FBE9E7;

  --shadow-sm: 0 1px 2px rgba(43, 20, 82, 0.07);
  --shadow-md: 0 8px 24px rgba(43, 20, 82, 0.12);
  --shadow-lg: 0 20px 48px rgba(43, 20, 82, 0.16);

  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;

  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'Karla', 'Segoe UI', sans-serif;

  --container: 1160px;

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

[data-theme="dark"]{
  --bg: #140D26;
  --bg-alt: #190F2E;
  --surface: #1F1638;
  --surface-raised: #261B45;
  --text: #F1EDFB;
  --text-muted: #BEB4DC;
  --text-faint: #8B81A8;
  --border: #2E2250;
  --border-strong: #3C2C67;

  --primary: #A78BFA;
  --primary-dark: #C4B5FD;
  --primary-light: #2B2050;
  --accent: #22D3EE;
  --accent-light: #113240;
  --danger: #E38077;
  --danger-light: #3A211E;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.45);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

h1, h2, h3, h4{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--text);
  letter-spacing: -0.01em;
}

p{ margin: 0 0 1em; color: var(--text-muted); }
a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display: block; }
button{ font-family: inherit; }

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

.visually-hidden{
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.skip-link{
  position: absolute;
  left: 12px; top: -60px;
  background: var(--primary);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--transition);
}
.skip-link:focus{ top: 12px; }

:focus-visible{
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  border: 1.5px solid transparent;
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  line-height: 1;
}
.btn:active{ transform: translateY(1px); }
.btn:disabled{ opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary{
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover:not(:disabled){
  background: var(--primary-dark);
  box-shadow: var(--shadow-md);
}

.btn-ghost{
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover{
  background: var(--bg-alt);
  border-color: var(--primary);
}

.btn-block{ width: 100%; }

/* ---------- header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-bar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  gap: 16px;
}

.logo{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.28rem;
  color: var(--text);
  white-space: nowrap;
}
.logo span{ color: var(--primary); }

.nav-links{
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a{
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition);
}
.nav-links a:hover, .nav-links a:focus-visible{
  background: var(--primary-light);
  color: var(--primary-dark);
}

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

.theme-toggle{
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.theme-toggle:hover{ background: var(--bg-alt); }
.theme-toggle svg{ width: 20px; height: 20px; }
.theme-toggle .icon-sun{ display: none; }
[data-theme="dark"] .theme-toggle .icon-moon{ display: none; }
[data-theme="dark"] .theme-toggle .icon-sun{ display: block; }

.menu-toggle{
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  cursor: pointer;
  position: relative;
}
.menu-toggle span, .menu-toggle::before, .menu-toggle::after{
  content: "";
  position: absolute;
  left: 11px; right: 11px;
  height: 2px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition), top var(--transition);
}
.menu-toggle::before{ top: 15px; }
.menu-toggle span{ top: 21px; }
.menu-toggle::after{ top: 27px; }
.menu-toggle[aria-expanded="true"]::before{ top: 21px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span{ opacity: 0; }
.menu-toggle[aria-expanded="true"]::after{ top: 21px; transform: rotate(-45deg); }

/* ---------- hero ---------- */
.hero{
  padding: 64px 0 40px;
}
.hero .container{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow{
  display: inline-block;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.82rem;
  margin-bottom: 18px;
}
.hero h1{
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  max-width: 15ch;
}
.hero-lead{
  font-size: 1.1rem;
  max-width: 46ch;
  margin-bottom: 28px;
}
.hero-cta-row{ display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-meta{
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  color: var(--text-faint);
  font-size: 0.88rem;
}
.hero-meta strong{ color: var(--text); display: block; font-family: var(--font-display); font-size: 1.3rem; }

.hero-art{
  position: relative;
}
.hero-art svg{ width: 100%; height: auto; }

/* ---------- sections ---------- */
.section{ padding: 72px 0; }
.section-alt{ background: var(--bg-alt); }
.section-head{ max-width: 640px; margin: 0 auto 40px; text-align: center; }
.section-head h2{ font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-head p{ font-size: 1.05rem; }

.reveal{
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.is-visible{ opacity: 1; transform: none; }

/* ---------- background remover tool ---------- */
.calculator{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 40px;
}

.calc-form h2{ font-size: 1.5rem; margin-bottom: 6px; }
.calc-form > p{ margin-bottom: 24px; }

.field-group{ margin-bottom: 22px; }
label{
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--text);
}
.hint{
  display: block;
  font-weight: 400;
  color: var(--text-faint);
  font-size: 0.8rem;
  margin-top: 4px;
}
input[type="number"], select, input[type="text"], input[type="email"], textarea{
  width: 100%;
  padding: 13px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, select:focus, textarea:focus{
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}
input.field-error, select.field-error{
  border-color: var(--danger);
}
input.field-error:focus, select.field-error:focus{
  box-shadow: 0 0 0 4px var(--danger-light);
}
.error-msg{
  color: var(--danger);
  font-size: 0.84rem;
  font-weight: 600;
  margin-top: 6px;
  display: none;
}
.error-msg.show{ display: block; }

.dropzone{
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 44px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: var(--bg-alt);
}
.dropzone:hover, .dropzone.drag-over{
  border-color: var(--primary);
  background: var(--primary-light);
}
.dropzone .dz-icon{
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: grid; place-items: center;
  margin: 0 auto 18px;
}
.dropzone h3{ font-size: 1.05rem; margin-bottom: 6px; }
.dropzone p{ margin: 0; font-size: 0.86rem; }
.dropzone input[type="file"]{ display: none; }

.upload-meta{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--text-faint);
}

.tool-status{
  margin-top: 20px;
  display: none;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
  font-size: 0.9rem;
}
.tool-status.show{ display: flex; }
.tool-status .spinner{
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 3px solid color-mix(in srgb, var(--primary) 30%, transparent);
  border-top-color: var(--primary);
  flex-shrink: 0;
  animation: spin 800ms linear infinite;
}
@keyframes spin{ to{ transform: rotate(360deg); } }

.tool-status.is-error{
  background: var(--danger-light);
  color: var(--danger);
}

.form-actions{ display: flex; gap: 14px; margin-top: 20px; flex-wrap: wrap; }

/* ---------- preview / results panel ---------- */
.results-panel{
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  padding: 28px;
  position: sticky;
  top: 96px;
  align-self: start;
}
.results-empty{
  text-align: center;
  padding: 24px 8px;
  color: var(--text-faint);
}
.results-empty svg{ width: 64px; height: 64px; margin: 0 auto 16px; opacity: 0.6; }

.results-content{ display: none; }
.results-content.show{
  display: block;
  animation: resultsIn 480ms ease;
}
@keyframes resultsIn{
  from{ opacity: 0; transform: translateY(10px); }
  to{ opacity: 1; transform: none; }
}

.preview-checker{
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background-image:
    linear-gradient(45deg, #d8d3ea 25%, transparent 25%),
    linear-gradient(-45deg, #d8d3ea 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #d8d3ea 75%),
    linear-gradient(-45deg, transparent 75%, #d8d3ea 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  display: grid;
  place-items: center;
  min-height: 220px;
}
[data-theme="dark"] .preview-checker{
  background-image:
    linear-gradient(45deg, #362a52 25%, transparent 25%),
    linear-gradient(-45deg, #362a52 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #362a52 75%),
    linear-gradient(-45deg, transparent 75%, #362a52 75%);
}
.preview-checker img{ max-height: 340px; width: auto; }

.results-content h3{ font-size: 1rem; margin: 18px 0 10px; }
.results-content .r-label{ font-weight: 700; font-size: 0.88rem; color: var(--text); margin-bottom: 10px; display:block; }

.results-disclaimer{
  margin-top: 20px;
  font-size: 0.78rem;
  color: var(--text-faint);
}

/* ---------- info grid / cards ---------- */
.card-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.info-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.info-card:hover{ box-shadow: var(--shadow-md); transform: translateY(-2px); }
.info-card .icon{
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: grid; place-items: center;
  margin-bottom: 16px;
}
.info-card h3{ font-size: 1.1rem; margin-bottom: 8px; }
.info-card p{ font-size: 0.95rem; margin-bottom: 0; }

.two-col{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.two-col .media{
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 32px;
}

/* ---------- steps ---------- */
.steps-list{
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  counter-reset: step;
}
.steps-list li{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: left;
  counter-increment: step;
}
.steps-list li::before{
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-family: var(--font-display);
  margin-bottom: 14px;
}
.steps-list p{ margin: 0; font-size: 0.9rem; }

/* ---------- activity guide ---------- */
.activity-guide{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.activity-guide .g-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 18px;
}
.activity-guide .g-card h4{ font-size: 1rem; margin-bottom: 8px; }
.activity-guide .g-card p{ font-size: 0.85rem; margin: 0; }
.activity-guide .g-tag{
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

/* ---------- goals ---------- */
.goal-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.goal-card{
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.goal-card.highlight{
  border-color: var(--primary);
  background: var(--primary-light);
}

/* ---------- tips ---------- */
.tips-list{
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.tips-list li{
  display: flex;
  gap: 14px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.tips-list .tip-icon{
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: grid; place-items: center;
}

/* ---------- about ---------- */
.about-block{
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

/* ---------- disclaimer ---------- */
.disclaimer-box{
  background: var(--accent-light);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: var(--radius-md);
  padding: 26px 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.disclaimer-box .icon{
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: grid; place-items: center;
}
.disclaimer-box p{ margin: 0; color: var(--text); font-size: 0.92rem; }

/* ---------- FAQ / accordion ---------- */
.accordion{ display: grid; gap: 12px; max-width: 780px; margin: 0 auto; }
.accordion-item{
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  overflow: hidden;
}
.accordion-trigger{
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 20px 22px;
  background: none;
  border: none;
  text-align: left;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  cursor: pointer;
}
.accordion-trigger .chev{
  flex-shrink: 0;
  transition: transform var(--transition);
}
.accordion-trigger[aria-expanded="true"] .chev{ transform: rotate(180deg); }
.accordion-panel{
  max-height: 0;
  overflow: hidden;
  transition: max-height 320ms ease;
}
.accordion-panel-inner{ padding: 0 22px 20px; }
.accordion-panel-inner p{ margin: 0; }

/* ---------- footer ---------- */
.site-footer{
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 56px 0 28px;
  margin-top: 40px;
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}
.footer-brand p{ font-size: 0.9rem; margin-top: 12px; max-width: 32ch; }
.footer-col h4{
  font-size: 0.85rem;
  text-transform: none;
  margin-bottom: 16px;
  color: var(--text);
}
.footer-col ul{ list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-col a{
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col a:hover{ color: var(--primary); }
.footer-bottom{
  border-top: 1px solid var(--border);
  padding-top: 22px;
  font-size: 0.82rem;
  color: var(--text-faint);
  display: flex;
  justify-content: center;
  text-align: center;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- simple page hero (subpages) ---------- */
.page-hero{ padding: 56px 0 20px; }
.page-hero h1{ font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
.page-content{
  max-width: 760px;
  margin: 0 auto;
}
.page-content h2{ font-size: 1.35rem; margin-top: 1.8em; }
.page-content ul{ color: var(--text-muted); }
.page-content li{ margin-bottom: 8px; }

.contact-layout{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
}
.contact-info-card h3{ font-size: 1.05rem; }
.contact-info-card .info-row{ display: flex; gap: 12px; margin-bottom: 16px; align-items: flex-start; }
.contact-info-card .info-row .icon{
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--primary-light); color: var(--primary-dark);
  display: grid; place-items: center; flex-shrink: 0;
}

.form-status{
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  display: none;
}
.form-status.show{ display: block; }
.form-status.success{ background: var(--primary-light); color: var(--primary-dark); }
.form-status.error{ background: var(--danger-light); color: var(--danger); }

.sitemap-list{
  display: grid;
  gap: 28px;
}
.sitemap-list h2{ font-size: 1.1rem; border-bottom: 1px solid var(--border); padding-bottom: 10px; }
.sitemap-list ul{ list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.sitemap-list a{ color: var(--primary-dark); font-weight: 600; }
.sitemap-list a:hover{ text-decoration: underline; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1024px){
  .card-grid{ grid-template-columns: repeat(2, 1fr); }
  .steps-list{ grid-template-columns: repeat(3, 1fr); }
  .activity-guide{ grid-template-columns: repeat(3, 1fr); }
  .goal-grid{ grid-template-columns: 1fr 1fr; }
  .calculator{ grid-template-columns: 1fr; }
  .results-panel{ position: static; }
}

@media (max-width: 860px){
  .nav-links{
    position: fixed;
    inset: 72px 16px auto 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }
  .nav-links.open{
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a{ padding: 14px 16px; }
  .menu-toggle{ display: block; }

  .hero .container{ grid-template-columns: 1fr; }
  .hero-art{ display: none; }
  .hero{ padding: 32px 0 24px; }

  .two-col{ grid-template-columns: 1fr; }
  .two-col .media{ order: -1; }

  .contact-layout{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  .card-grid{ grid-template-columns: 1fr; }
  .steps-list{ grid-template-columns: 1fr; }
  .activity-guide{ grid-template-columns: 1fr 1fr; }
  .tips-list{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px){
  .container{ padding: 0 18px; }
  .calculator{ padding: 24px 18px; }
  .field-row{ grid-template-columns: 1fr; }
  .steps-list{ grid-template-columns: 1fr; }
  .activity-guide{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom{ flex-direction: column; }
  .hero-cta-row .btn{ width: 100%; }
  .form-actions .btn{ flex: 1; }
}