/* ============================================================
   Varun Baskaran Tutoring — "The Tutor's Notebook"
   Red marking-pen on warm white · yellow highlights · cursive notes
   ============================================================ */

:root {
  --ink: #241619;
  --ink-2: #3A2429;
  --paper: #FBF8F5;
  --card: #FFFFFF;
  --slate: #6E585C;
  --pen: #B3282D;
  --pen-dark: #8F1F24;
  --marigold: #F0B93B;
  --grid: #EADDD6;
  --grid-soft: #F2E9E3;
  --radius: 14px;
  --shadow: 0 2px 6px rgba(36, 22, 25, 0.06), 0 12px 32px rgba(36, 22, 25, 0.08);
  --font-display: "Bricolage Grotesque", sans-serif;
  --font-body: "Public Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --font-script: "Caveat", cursive;
  --max: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--pen); }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--pen);
  outline-offset: 3px;
  border-radius: 4px;
}

.mono { font-family: var(--font-mono); }

/* ---------- shared section bones ---------- */

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

section { padding: 88px 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pen);
  margin-bottom: 14px;
}
.eyebrow-light { color: var(--marigold); }

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.08;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2.6rem, 6vw, 4.3rem); font-weight: 800; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); font-weight: 700; max-width: 21ch; }
h3 { font-size: 1.22rem; font-weight: 700; }

/* cursive accent inside headlines — the tutor's pen */
.script-accent {
  font-family: var(--font-script);
  font-weight: 700;
  font-size: 1.18em;
  line-height: 1;
  color: var(--pen);
  letter-spacing: 0;
}

.section-sub {
  color: var(--slate);
  max-width: 58ch;
  margin-top: 16px;
  font-size: 1.06rem;
  font-style: italic;
}

.section-cta { text-align: center; margin-top: 48px; }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  padding: 15px 28px;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--pen);
  color: #fff;
  box-shadow: 0 6px 18px rgba(179, 40, 45, 0.28);
}
.btn-primary:hover { background: var(--pen-dark); }

.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--paper); }

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}
.btn-outline-light:hover { border-color: #fff; }

.btn-link {
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--marigold);
  padding-bottom: 2px;
}
.btn-link:hover { color: var(--pen); }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--grid);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  margin-right: auto;
}
.wordmark-mark {
  font-family: var(--font-script);
  font-weight: 700;
  font-size: 2.1rem;
  line-height: 1;
  color: var(--pen);
  transform: rotate(-4deg);
}
.wordmark-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}
.wordmark-text em { font-style: normal; color: var(--pen); }

.site-nav { display: flex; gap: 22px; }
.site-nav a {
  text-decoration: none;
  color: var(--ink-2);
  font-weight: 500;
  font-size: 0.95rem;
}
.site-nav a:hover { color: var(--pen); }

.header-cta { padding: 10px 18px; font-size: 0.92rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--ink);
  border-radius: 2px;
}

/* ---------- hero ---------- */

.hero {
  padding: 72px 0 96px;
  background-image:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 36px 36px;
  border-bottom: 1px solid var(--grid);
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-sub {
  margin-top: 22px;
  font-size: 1.13rem;
  color: var(--ink-2);
  max-width: 54ch;
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  align-items: center;
  gap: 26px;
  flex-wrap: wrap;
}

.hero-trust {
  margin-top: 26px;
  font-size: 0.92rem;
  color: var(--slate);
}
.hero-trust .mono { color: var(--pen); font-weight: 600; }

/* ---------- growth chart card ---------- */

.growth-card {
  background: var(--card);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 18px 16px;
  transform: rotate(0.6deg);
}
.growth-card svg { width: 100%; height: auto; }

.chart-grid line { stroke: var(--ink); stroke-width: 1.5; }
.chart-grid line.faint { stroke: var(--grid); stroke-width: 1; }

.chart-axis text {
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--slate);
}

.growth-line {
  fill: none;
  stroke: var(--ink);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 700;
  stroke-dashoffset: 700;
  animation: draw 1.6s ease-out 0.3s forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .growth-line { stroke-dashoffset: 0; }
}

.milestone circle { fill: var(--card); stroke: var(--ink); stroke-width: 2.5; }
.milestone text {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  fill: var(--ink-2);
}
.milestone-final circle { stroke: var(--pen); }

.pen-note text {
  font-family: var(--font-script);
  font-weight: 700;
  font-size: 26px;
  fill: var(--pen);
}

.growth-card figcaption {
  margin-top: 12px;
  font-size: 0.88rem;
  font-style: italic;
  color: var(--slate);
  padding: 0 6px 6px;
}
.growth-card figcaption a { color: var(--pen); font-weight: 600; }

/* ---------- empathy ---------- */

.empathy { background: var(--card); border-bottom: 1px solid var(--grid); }

.empathy-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.empathy-list { list-style: none; display: grid; gap: 22px; }
.empathy-list li {
  padding-left: 34px;
  position: relative;
  color: var(--slate);
  font-size: 1.05rem;
}
.empathy-list li strong { color: var(--ink); }
.empathy-list li::before {
  content: "✎";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--pen);
  font-size: 1.15rem;
}

.empathy-bridge {
  margin-top: 48px;
  padding: 26px 30px;
  background: var(--paper);
  border-left: 4px solid var(--pen);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 1.14rem;
  font-weight: 500;
  font-style: italic;
  max-width: 62ch;
}

/* ---------- services columns ---------- */

.svc-columns {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.svc-col h3 {
  font-size: 1.25rem;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--pen);
}

.svc-col-tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 10px 0 14px;
}

.svc-col ul { list-style: none; }
.svc-col li {
  position: relative;
  padding: 5px 0 5px 20px;
  color: var(--ink-2);
  font-size: 1rem;
}
.svc-col li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--pen);
  font-weight: 700;
}

/* AP column: many exams, grouped by subject area, scrolling in place */
.svc-scroll-wrap { position: relative; }
.svc-scroll-wrap::after {
  content: "";
  position: absolute;
  left: 0;
  right: 6px;
  bottom: 0;
  height: 44px;
  background: linear-gradient(rgba(251, 248, 245, 0), var(--paper));
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.2s ease;
}
.svc-scroll-wrap.at-end::after { opacity: 0; }

.svc-scroll {
  max-height: 360px;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--grid) transparent;
}
.svc-scroll:focus-visible {
  outline: 3px solid var(--pen);
  outline-offset: 3px;
  border-radius: 4px;
}
.svc-scroll::-webkit-scrollbar { width: 6px; }
.svc-scroll::-webkit-scrollbar-track { background: transparent; }
.svc-scroll::-webkit-scrollbar-thumb {
  background: var(--grid);
  border-radius: 99px;
}
.svc-scroll:hover::-webkit-scrollbar-thumb { background: var(--pen); }

.svc-group + .svc-group { margin-top: 18px; }
.svc-group-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 4px;
}
.svc-col-ap li {
  font-size: 0.94rem;
  padding: 3px 0 3px 18px;
}

/* ---------- how it works ---------- */

.how { background: var(--card); border-top: 1px solid var(--grid); border-bottom: 1px solid var(--grid); }

.steps {
  list-style: none;
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.step {
  background: var(--paper);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: 30px 26px;
  position: relative;
}
.step-num {
  display: block;
  font-family: var(--font-script);
  font-weight: 700;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--pen);
  margin-bottom: 14px;
  transform: rotate(-3deg);
  width: max-content;
}
.step h3 { margin-bottom: 10px; }
.step p { color: var(--slate); font-size: 0.98rem; }

/* ---------- about us ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.portrait-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px),
    var(--card);
  background-size: 28px 28px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  place-items: center;
  transform: rotate(-1deg);
}
.portrait-monogram {
  font-family: var(--font-script);
  font-weight: 700;
  font-size: 5.5rem;
  color: var(--grid);
}
.portrait-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.about-pull {
  margin-top: 28px;
  font-family: var(--font-script);
  font-weight: 600;
  font-size: 1.7rem;
  line-height: 1.3;
  color: var(--ink);
}
.about-pull cite {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-style: normal;
  font-weight: 400;
  font-size: 0.82rem;
  color: var(--slate);
}

.about-copy p:not(.eyebrow) {
  margin-top: 18px;
  color: var(--ink-2);
  font-size: 1.05rem;
  max-width: 60ch;
}
.about-copy h2 { margin-bottom: 6px; }

/* tutors */

.tutors { margin-top: 72px; }
.tutors-heading {
  font-size: 1.5rem;
  margin-bottom: 24px;
}
.tutor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 22px;
}
.tutor-card {
  background: var(--card);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: 26px;
}
.tutor-photo {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px),
    var(--paper);
  background-size: 18px 18px;
  border: 2px solid var(--pen);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  overflow: hidden;
}
.tutor-photo { position: relative; }
.tutor-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.tutor-initials {
  font-family: var(--font-script);
  font-weight: 700;
  font-size: 2rem;
  color: var(--pen);
}
.tutor-role {
  font-size: 0.75rem;
  color: var(--pen);
  margin: 6px 0 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.tutor-card > p:last-child { color: var(--slate); font-size: 0.95rem; }

/* ---------- results ---------- */

.results { background: var(--ink); color: #fff; }
.results .eyebrow { color: var(--marigold); }
.results h2 { color: #fff; }

.results-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.result-card {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  padding: 26px 22px;
  background: rgba(255, 255, 255, 0.04);
}
.result-figure {
  font-family: var(--font-script);
  font-weight: 700;
  font-size: 2.5rem;
  line-height: 1;
  color: var(--marigold);
  display: block;
  margin-bottom: 12px;
}
.result-card p { color: rgba(255, 255, 255, 0.75); font-size: 0.95rem; }

.results-note {
  margin-top: 28px;
  font-size: 0.9rem;
  font-style: italic;
  color: rgba(255, 255, 255, 0.55);
}

/* ---------- testimonial carousel ---------- */

.reviews { background: var(--card); border-bottom: 1px solid var(--grid); }

.carousel {
  margin-top: 48px;
  position: relative;
}

.carousel-viewport {
  overflow: hidden;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

.carousel-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(0.25, 0.8, 0.35, 1);
}

.review-card {
  flex: 0 0 100%;
  background: var(--paper);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: 38px 42px 32px;
  display: flex;
  flex-direction: column;
  min-height: 380px;
}
.review-card[aria-hidden="true"] { visibility: hidden; }

.review-stars {
  color: var(--marigold);
  font-size: 1.05rem;
  letter-spacing: 3px;
  margin-bottom: 6px;
}

.review-subjects {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--slate);
  margin-bottom: 20px;
}

.review-quote {
  font-size: 1.09rem;
  line-height: 1.65;
  color: var(--ink);
  flex: 1;
}
.review-quote p + p { margin-top: 12px; }

.review-highlight {
  margin-top: 18px;
  font-family: var(--font-script);
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.2;
  color: var(--pen);
}
.review-highlight::before { content: "✓ "; font-weight: 700; }

.review-footer {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--grid);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.review-attrib { font-weight: 600; font-size: 0.95rem; }
.review-attrib span { display: block; font-weight: 400; font-size: 0.85rem; font-style: italic; color: var(--slate); }

.voice-toggle {
  display: inline-flex;
  border: 1.5px solid var(--pen);
  border-radius: 99px;
  overflow: hidden;
}
.voice-toggle button {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--pen);
  cursor: pointer;
}
.voice-toggle button[aria-pressed="true"] {
  background: var(--pen);
  color: #fff;
}

.carousel-controls {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
}

.carousel-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  font-size: 1.15rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.carousel-btn:hover { background: var(--ink); color: #fff; }

.carousel-dots { display: flex; gap: 9px; }
.carousel-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--slate);
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.carousel-dots button[aria-selected="true"] {
  background: var(--pen);
  border-color: var(--pen);
  transform: scale(1.25);
}

/* ---------- FAQ ---------- */

.faq-list { margin-top: 40px; max-width: 760px; }

.faq-list details {
  background: var(--card);
  border: 1px solid var(--grid);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-list summary {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 52px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--pen);
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p {
  padding: 0 24px 22px;
  color: var(--slate);
  max-width: 65ch;
}

/* ---------- contact ---------- */

.contact {
  background: var(--ink);
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 36px 36px;
  color: #fff;
  text-align: center;
}
.contact h2 { color: #fff; margin: 0 auto; max-width: 26ch; }
.contact-sub {
  margin: 22px auto 0;
  max-width: 52ch;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.08rem;
}

.contact-actions {
  margin-top: 36px;
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.contact-promise {
  margin-top: 30px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

/* ---------- footer ---------- */

.site-footer {
  background: #1B0E10;
  color: rgba(255, 255, 255, 0.6);
  padding: 36px 0;
  font-size: 0.9rem;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}
.footer-inner .mono { color: var(--marigold); }
.site-footer a { color: rgba(255, 255, 255, 0.75); }

/* ---------- sticky mobile CTA ---------- */

.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 60;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: var(--paper);
  border-top: 1px solid var(--grid);
  display: none;
}
.sticky-cta .btn { width: 100%; text-align: center; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .empathy-grid { grid-template-columns: 1fr; gap: 32px; }
  .svc-columns { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .steps { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-portrait { max-width: 340px; }
  .results-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  section { padding: 64px 0; }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card);
    border-bottom: 1px solid var(--grid);
    flex-direction: column;
    padding: 18px 24px;
    gap: 16px;
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }

  .review-card { padding: 28px 24px; min-height: 420px; }
  .carousel-viewport { padding: 0 16px; }

  .sticky-cta.visible { display: block; }
}

@media (max-width: 560px) {
  .svc-columns { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 480px) {
  .results-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .result-figure { font-size: 2rem; }
  .hero-actions { gap: 16px; }
}