/* =========================================================
   ACADIFY TUTORIALS — Design tokens
   Display: Fraunces (academic, book-like serif)
   Body:    Manrope (clean, contemporary sans)
   Utility: IBM Plex Mono (class numbers, tags, labels)
   Palette: Ink navy + warm marigold + warm paper background
   ========================================================= */

:root{
  --ink:        #1B2A4A;
  --ink-2:      #24345C;
  --marigold:   #E3A23C;
  --marigold-d: #B97C1F;
  --paper:      #FAF7F1;
  --paper-tint: #F1EBDC;
  --card:       #FFFFFF;
  --slate:      #3F4759;
  --slate-soft: #6B7185;
  --line:       rgba(27, 42, 74, 0.12);
  --line-soft:  rgba(27, 42, 74, 0.07);
  --success:    #3F7D58;
  --success-bg: #E7F2EA;
  --error:      #C1443A;
  --error-bg:   #FBEAE8;

  --font-display: "Fraunces", Georgia, serif;
  --font-body:    "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono:    "IBM Plex Mono", "Courier New", monospace;

  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 26px;
  --shadow-card: 0 1px 2px rgba(27,42,74,0.04), 0 12px 28px -16px rgba(27,42,74,0.22);
  --shadow-lift: 0 20px 40px -20px rgba(27,42,74,0.30);
  --container-w: 1180px;
  --header-h: 76px;
}

/* =========================================================
   Reset & base
   ========================================================= */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--slate);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin: 0; padding: 0; }
h1,h2,h3,h4{ font-family: var(--font-display); color: var(--ink); margin: 0; line-height: 1.15; }
p{ margin: 0; }
button{ font-family: inherit; cursor: pointer; }
input, select, textarea{ font-family: inherit; font-size: 1rem; }

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

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

:focus-visible{
  outline: 2.5px solid var(--marigold-d);
  outline-offset: 2px;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font-weight: 700;
  font-size: 0.94rem;
  letter-spacing: 0.01em;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn-lg{ padding: 15px 30px; font-size: 1rem; }
.btn-primary{
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover{ background: var(--ink-2); transform: translateY(-2px); box-shadow: var(--shadow-lift); }
.btn-outline{
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-outline:hover{ background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.btn-ghost{
  background: transparent;
  color: var(--ink);
  border-color: transparent;
  padding: 10px 16px;
}
.btn-ghost:hover{ background: var(--line-soft); }

.link-btn{
  background: none;
  border: none;
  color: var(--marigold-d);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 0;
}

/* =========================================================
   Header / Navigation
   ========================================================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 241, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand{
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
}
.brand-mark{
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--marigold);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-text{ display: flex; flex-direction: column; line-height: 1.1; }
.brand-name{ font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; color: var(--ink); }
.brand-sub{ font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.18em; color: var(--slate-soft); }

.main-nav ul{ display: flex; gap: 4px; }
.nav-link{
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--slate);
  transition: background 0.18s ease, color 0.18s ease;
}
.nav-link:hover{ background: var(--line-soft); color: var(--ink); }

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

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  border-radius: 8px;
}
.nav-toggle span{
  display: block;
  width: 22px;
  height: 2.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle.is-open span:nth-child(1){ transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity: 0; }
.nav-toggle.is-open span:nth-child(3){ transform: translateY(-7.5px) rotate(-45deg); }

/* =========================================================
   Hero
   ========================================================= */
.hero{
  padding: 76px 0 90px;
  overflow: hidden;
  position: relative;
}
.hero::before{
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(227,162,60,0.16), transparent 70%);
  z-index: 0;
}
.hero-inner{
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--marigold-d);
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 600;
}
.hero-title{
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  animation: rise 0.7s cubic-bezier(0.22,1,0.36,1) both;
}
.hero-tagline{
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--ink-2);
  margin-top: 18px;
  animation: rise 0.7s cubic-bezier(0.22,1,0.36,1) 0.08s both;
}
.hero-desc{
  margin-top: 20px;
  max-width: 46ch;
  color: var(--slate-soft);
  font-size: 1.02rem;
  animation: rise 0.7s cubic-bezier(0.22,1,0.36,1) 0.14s both;
}
.hero-actions{
  display: flex;
  gap: 14px;
  margin-top: 34px;
  flex-wrap: wrap;
  animation: rise 0.7s cubic-bezier(0.22,1,0.36,1) 0.2s both;
}

@keyframes rise{
  from{ opacity: 0; transform: translateY(16px); }
  to{ opacity: 1; transform: translateY(0); }
}

/* Signature hero visual: the "class ladder" 1 -> 12 */
.hero-visual{ position: relative; height: 460px; }
.ladder{
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column-reverse;
  justify-content: space-between;
  padding: 6px 0;
}
.ladder-line{
  position: absolute;
  left: 22px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to top, var(--marigold), var(--ink));
  opacity: 0.35;
}
.ladder-rung{
  display: flex;
  align-items: center;
  gap: 14px;
  opacity: 0;
  animation: rung-in 0.5s ease forwards;
  animation-delay: calc(var(--i) * 0.05s + 0.15s);
}
.ladder-rung span{
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card);
  border: 2px solid var(--ink);
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-card);
}
.ladder-rung::after{
  content: "";
  height: 1px;
  flex: 1;
  background: var(--line);
}
.ladder-rung--final span{
  background: var(--marigold);
  border-color: var(--marigold-d);
  color: var(--ink);
  width: 52px;
  height: 52px;
  font-size: 1.05rem;
}
.ladder-flag{
  position: absolute;
  top: -6px;
  left: 60px;
  background: var(--ink);
  color: var(--marigold);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 5px 12px;
  border-radius: 999px;
}
@keyframes rung-in{
  from{ opacity: 0; transform: translateX(-14px); }
  to{ opacity: 1; transform: translateX(0); }
}

/* =========================================================
   Section shells
   ========================================================= */
.section{ padding: 88px 0; }
.section-tint{ background: var(--paper-tint); }
.section-eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--marigold-d);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-title{
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  max-width: 22ch;
}
.section-lead{
  margin-top: 16px;
  max-width: 62ch;
  color: var(--slate-soft);
  font-size: 1.04rem;
}

.reveal{
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s cubic-bezier(0.22,1,0.36,1), transform 0.6s cubic-bezier(0.22,1,0.36,1);
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* =========================================================
   Courses
   ========================================================= */
.course-grid{
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.course-card{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 30px 26px;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.course-card:hover{
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: var(--marigold);
}
.course-card--wide{ grid-column: span 1; }
.course-range{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--marigold-d);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.course-card h3{ font-size: 1.28rem; margin-bottom: 12px; }
.course-card p{ color: var(--slate-soft); font-size: 0.96rem; }
.course-tags{ display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.course-tags li{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--paper-tint);
  color: var(--ink-2);
  border: 1px solid var(--line);
}
.badge{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 6px;
  font-weight: 600;
}
.badge-ssc{ background: #E3EEE6; color: var(--success); }
.badge-cbse{ background: #EAE3F6; color: #5B3E9C; }

/* =========================================================
   Why Acadify
   ========================================================= */
.why-grid{
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.why-card{
  padding: 28px 24px;
  border-radius: var(--radius-m);
  background: var(--card);
  border: 1px solid var(--line);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.why-card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-card); }
.why-icon{
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--paper-tint);
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.why-icon svg{ width: 26px; height: 26px; }
.why-card h3{ font-size: 1.1rem; margin-bottom: 8px; }
.why-card p{ color: var(--slate-soft); font-size: 0.94rem; }

/* =========================================================
   Boards
   ========================================================= */
.boards-grid{
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.board-card{
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius-l);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
}
.board-card::after{
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(227,162,60,0.22), transparent 70%);
}
.board-mono{
  font-family: var(--font-mono);
  color: var(--marigold);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}
.board-card h3{ color: var(--paper); font-size: 1.5rem; margin-bottom: 12px; }
.board-card p{ color: rgba(250,247,241,0.75); max-width: 40ch; }

/* =========================================================
   Forms (Enquiry + Admission)
   ========================================================= */
.form-card{
  margin-top: 44px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 40px;
  box-shadow: var(--shadow-card);
}
.form-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px 26px;
}
.field{ display: flex; flex-direction: column; gap: 8px; }
.field-full{ grid-column: 1 / -1; }
.field-btn{ justify-content: flex-end; }
.field label{
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--ink);
}
.req{ color: var(--marigold-d); }
.field input, .field select, .field textarea{
  padding: 12px 14px;
  border-radius: var(--radius-s);
  border: 1.5px solid var(--line);
  background: var(--paper);
  color: var(--slate);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{
  border-color: var(--ink);
  outline: none;
  box-shadow: 0 0 0 3px rgba(27,42,74,0.10);
}
.field input[readonly]{
  background: var(--paper-tint);
  color: var(--slate-soft);
  font-family: var(--font-mono);
  font-size: 0.92rem;
}
.field textarea{ resize: vertical; min-height: 80px; }

.error-msg{
  display: none;
  font-size: 0.8rem;
  color: var(--error);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{
  border-color: var(--error);
  background: var(--error-bg);
}
.field.has-error .error-msg{ display: block; }
.field.is-valid input,
.field.is-valid select,
.field.is-valid textarea{ border-color: var(--success); }

.form-footer{
  margin-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding-top: 26px;
  border-top: 1px dashed var(--line);
}
.form-note{ font-size: 0.84rem; color: var(--slate-soft); max-width: 40ch; }
.form-success{
  margin-top: 22px;
  padding: 14px 18px;
  border-radius: var(--radius-s);
  background: var(--success-bg);
  color: var(--success);
  font-weight: 600;
  font-size: 0.92rem;
}
.form-error{
  margin-bottom: 24px;
  padding: 14px 18px;
  border-radius: var(--radius-s);
  background: var(--error-bg);
  color: var(--error);
  font-weight: 600;
  font-size: 0.92rem;
}

#enquiry-pdf-download,
#admission-pdf-download{
  margin-top: 14px;
}

/* Honeypot field: invisible to real users, catches simple bots */
.hp-field{
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.btn[disabled]{
  opacity: 0.65;
  cursor: not-allowed;
  transform: none !important;
}
.form-hint{
  margin-top: 14px;
  color: var(--error);
  font-size: 0.86rem;
  font-weight: 600;
}

/* Admission selector */
.admission-select-card{
  margin-top: 44px;
  background: var(--ink);
  border-radius: var(--radius-l);
  padding: 32px 36px;
}
.selector-grid{
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 20px;
  align-items: end;
}
.admission-select-card .field label{ color: var(--paper); }
.admission-select-card .field select{
  background: rgba(250,247,241,0.06);
  border-color: rgba(250,247,241,0.25);
  color: var(--paper);
}
.admission-select-card .field select option{ color: var(--ink); }
.admission-select-card .btn-primary{ background: var(--marigold); color: var(--ink); }
.admission-select-card .btn-primary:hover{ background: var(--marigold-d); }

.admission-heading{
  margin-bottom: 30px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.admission-heading-top{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--marigold-d);
  width: 100%;
}
.admission-heading h3{ font-size: 1.7rem; }

.form-section-title{
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  margin: 30px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.form-section-title:first-of-type{ margin-top: 0; }

/* =========================================================
   Contact
   ========================================================= */
.contact-inner{ text-align: left; }
.contact-email{
  display: inline-block;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--ink);
  border-bottom: 2px solid var(--marigold);
  padding-bottom: 3px;
  font-weight: 600;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.contact-email:hover{ color: var(--marigold-d); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer{
  background: var(--ink);
  color: rgba(250,247,241,0.82);
  padding: 48px 0 0;
}
.footer-inner{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 34px;
}
.footer-brand{ display: flex; align-items: center; gap: 14px; }
.footer-name{ font-family: var(--font-display); color: var(--paper); font-size: 1.15rem; font-weight: 600; }
.footer-tag{ font-family: var(--font-mono); font-size: 0.74rem; color: var(--marigold); letter-spacing: 0.04em; margin-top: 2px; }
.footer-links{ display: flex; gap: 26px; flex-wrap: wrap; }
.footer-links a{ font-size: 0.9rem; transition: color 0.18s ease; }
.footer-links a:hover{ color: var(--marigold); }
.footer-bottom{
  border-top: 1px solid rgba(250,247,241,0.12);
  padding: 20px 0;
  font-size: 0.82rem;
  color: rgba(250,247,241,0.55);
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px){
  .hero-inner{ grid-template-columns: 1fr; }
  .hero-visual{ height: 360px; order: -1; }
  .course-grid{ grid-template-columns: repeat(2, 1fr); }
  .why-grid{ grid-template-columns: repeat(2, 1fr); }
  .boards-grid{ grid-template-columns: 1fr; }
  .selector-grid{ grid-template-columns: 1fr; }
  .field-btn{ justify-content: stretch; }
  .field-btn .btn{ width: 100%; }
}

@media (max-width: 760px){
  .main-nav{
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .main-nav.is-open{ max-height: 420px; }
  .main-nav ul{ flex-direction: column; padding: 10px 24px 20px; gap: 2px; }
  .nav-link{ display: block; padding: 12px 10px; }
  .header-cta{ display: none; }
  .nav-toggle{ display: flex; }

  .course-grid{ grid-template-columns: 1fr; }
  .why-grid{ grid-template-columns: 1fr; }
  .form-grid{ grid-template-columns: 1fr; }
  .form-card{ padding: 26px; }
  .section{ padding: 64px 0; }
  .hero{ padding: 48px 0 60px; }
  .form-footer{ flex-direction: column; align-items: stretch; }
  .form-footer .btn{ width: 100%; }
  .footer-inner{ flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px){
  .hero-title{ font-size: 2.2rem; }
  .hero-tagline{ font-size: 1.1rem; }
  .admission-select-card{ padding: 24px 20px; }
}