/* Northside Math Tutoring - one-on-one tutoring demo */

:root {
  --indigo-900: #2a2482;
  --indigo-800: #3730a3;
  --indigo-700: #4338ca;
  --indigo-600: #4f46e5;
  --indigo-100: #e5e3fb;
  --indigo-50: #f1f0fd;
  --yellow: #facc15;
  --yellow-dark: #e0b100;
  --yellow-soft: #fff8dd;
  --ink: #1f2038;
  --ink-soft: #55577a;
  --line: #e4e4f2;
  --bg: #fbfbfe;
  --white: #ffffff;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 6px 18px rgba(47, 40, 130, 0.08);
  --shadow-md: 0 20px 46px rgba(47, 40, 130, 0.16);
  --display: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --sans: "Nunito", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img,
iframe {
  max-width: 100%;
}

a {
  color: var(--indigo-700);
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.wrap {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.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: 1rem;
  top: -4rem;
  z-index: 200;
  background: var(--indigo-700);
  color: var(--white);
  padding: 0.6rem 1rem;
  border-radius: 0 0 10px 10px;
  font-weight: 700;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--yellow-dark);
  outline-offset: 2px;
  border-radius: 8px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.88rem 1.6rem;
  border-radius: 999px;
  border: 2px solid transparent;
  font-family: var(--display);
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--indigo-700);
  color: var(--white);
  box-shadow: 0 12px 26px rgba(67, 56, 202, 0.32);
}

.btn-primary:hover {
  background: var(--indigo-800);
}

.btn-ghost {
  background: var(--white);
  border-color: var(--indigo-100);
  color: var(--indigo-700);
}

.btn-ghost:hover {
  background: var(--indigo-50);
}

.btn-block {
  width: 100%;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 251, 254, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: var(--indigo-700);
  color: var(--yellow);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--display);
  font-size: 1.22rem;
  font-weight: 700;
}

.brand-sub {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--indigo-600);
  font-weight: 700;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: inline-block;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.94rem;
  transition: background 0.2s ease, color 0.2s ease;
}

.site-nav a:hover {
  background: var(--indigo-50);
  color: var(--indigo-700);
}

.site-nav a.nav-cta {
  background: var(--indigo-700);
  color: var(--white);
  margin-left: 0.45rem;
  padding-inline: 1.15rem;
}

.site-nav a.nav-cta:hover {
  background: var(--indigo-800);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

/* Hero */
.hero {
  padding: 4.5rem 0 4rem;
  background:
    radial-gradient(720px 420px at 10% -10%, var(--yellow-soft), transparent 60%),
    radial-gradient(680px 420px at 96% 8%, var(--indigo-100), transparent 58%);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--indigo-100);
  color: var(--indigo-700);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.eyebrow svg {
  color: var(--yellow-dark);
}

.hero h1 {
  font-size: clamp(2.3rem, 5.2vw, 3.9rem);
  margin: 1.2rem 0 0;
  font-weight: 800;
}

.lede {
  max-width: 52ch;
  color: var(--ink-soft);
  font-size: 1.1rem;
  margin: 1.2rem 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.8rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}

.hero-badges li {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--line);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.hero-art {
  position: relative;
}

.chalkboard {
  background: linear-gradient(160deg, var(--indigo-800), var(--indigo-900));
  border-radius: var(--radius-lg);
  padding: 2rem 1.8rem;
  box-shadow: var(--shadow-md);
  border: 8px solid #1c1866;
}

.chalk-row {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.9rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.18);
}

.chalk-row:last-of-type {
  border-bottom: 0;
}

.chalk-label {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yellow);
  font-weight: 700;
}

.chalk-eq {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 600;
  color: #f3f4ff;
}

.chalk-note {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  display: inline-block;
  border-radius: 999px;
  background: rgba(250, 204, 21, 0.16);
  border: 1px solid rgba(250, 204, 21, 0.45);
  color: var(--yellow);
  font-weight: 700;
  font-size: 0.9rem;
}

.hero-float {
  position: absolute;
  right: -0.5rem;
  bottom: -1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.8rem 1.1rem;
  box-shadow: var(--shadow-md);
}

.hero-float-num {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--yellow);
  color: var(--indigo-900);
  font-family: var(--display);
  font-weight: 800;
}

.hero-float-txt {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-soft);
  max-width: 120px;
  line-height: 1.25;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-head {
  max-width: 60ch;
  margin-bottom: 2.6rem;
}

.kicker {
  margin: 0 0 0.6rem;
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--indigo-600);
}

.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  margin: 0 0 0.7rem;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
}

/* Subjects */
.subjects {
  background: var(--white);
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.3rem;
}

.subject-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.7rem 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.subject-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
  border-color: var(--indigo-100);
}

.subject-icon {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--yellow-soft);
  color: var(--indigo-700);
  border: 1px solid #f6e6a8;
}

.subject-card h3 {
  font-size: 1.18rem;
  margin: 1rem 0 0.4rem;
}

.subject-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Process / timeline */
.process {
  background: linear-gradient(180deg, var(--bg), var(--indigo-50));
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  position: relative;
}

.timeline-step {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2rem 1.6rem 1.7rem;
  box-shadow: var(--shadow-sm);
}

.timeline-step::after {
  content: "";
  position: absolute;
  top: 3.3rem;
  right: -1.6rem;
  width: 1.6rem;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--indigo-100) 0 6px, transparent 6px 12px);
}

.timeline-step:last-child::after {
  display: none;
}

.timeline-marker {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--indigo-700);
  color: var(--yellow);
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.3rem;
  box-shadow: 0 8px 18px rgba(67, 56, 202, 0.28);
}

.timeline-body h3 {
  font-size: 1.25rem;
  margin: 1.1rem 0 0.45rem;
}

.timeline-body p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

/* Rates */
.rates {
  background: var(--white);
}

.rates-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.rates-copy h2 {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  margin: 0 0 1rem;
}

.rates-copy > p {
  color: var(--ink-soft);
  margin: 0 0 1.4rem;
}

.rates-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.rates-list li {
  position: relative;
  padding-left: 2rem;
  color: var(--ink);
  font-size: 1rem;
}

.rates-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--yellow);
}

.rates-list li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 0.55rem;
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--indigo-900);
  border-bottom: 2px solid var(--indigo-900);
  transform: rotate(-45deg);
}

.rate-card {
  background: linear-gradient(165deg, var(--indigo-800), var(--indigo-900));
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.4rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.rate-card-label {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--yellow);
  font-weight: 700;
}

.rate-card-price {
  margin: 0.5rem 0 0;
  font-family: var(--display);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
}

.rate-currency {
  font-size: 2rem;
  vertical-align: super;
}

.rate-card-sub {
  margin: 0.6rem 0 0;
  color: #c7c5f0;
  font-size: 0.95rem;
}

.rate-card-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.16);
  margin: 1.6rem 0;
}

.rate-card-includes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
  text-align: left;
}

.rate-card-includes li {
  position: relative;
  padding-left: 1.7rem;
  font-size: 0.95rem;
  color: #e7e6fb;
}

.rate-card-includes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--yellow);
}

/* About */
.about {
  background: linear-gradient(180deg, var(--indigo-50), var(--bg));
}

.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
}

.about-avatar {
  display: grid;
  place-items: center;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 28px;
  background: linear-gradient(150deg, var(--indigo-600), var(--indigo-800));
  color: var(--yellow);
  font-family: var(--display);
  font-size: 3.6rem;
  font-weight: 800;
  box-shadow: var(--shadow-md);
}

.about-copy h2 {
  font-size: clamp(1.8rem, 3.8vw, 2.5rem);
  margin: 0 0 1rem;
}

.about-copy p {
  color: var(--ink-soft);
  margin: 0 0 1rem;
  max-width: 62ch;
}

.credentials {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.credentials li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--ink);
}

.credentials svg {
  color: var(--indigo-600);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* FAQ */
.faq {
  background: var(--white);
}

.faq-wrap {
  max-width: 860px;
}

.accordion {
  display: grid;
  gap: 0.8rem;
}

.accordion-item {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.accordion-item h3 {
  margin: 0;
  font-size: 1rem;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.4rem;
  border: 0;
  background: transparent;
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: background 0.2s ease;
}

.accordion-trigger:hover {
  background: var(--indigo-50);
}

.accordion-icon {
  position: relative;
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--yellow);
  transition: transform 0.25s ease;
}

.accordion-icon::before,
.accordion-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--indigo-900);
  transform: translate(-50%, -50%);
}

.accordion-icon::before {
  width: 11px;
  height: 2px;
}

.accordion-icon::after {
  width: 2px;
  height: 11px;
  transition: transform 0.25s ease;
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(180deg);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.accordion-panel {
  padding: 0 1.4rem 1.3rem;
  color: var(--ink-soft);
  font-size: 0.97rem;
}

.accordion-panel p {
  margin: 0;
}

.accordion-panel[hidden] {
  display: none;
}

/* Book */
.book {
  background: linear-gradient(180deg, var(--bg), var(--indigo-50));
}

.book-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 3rem;
  align-items: start;
}

.book-copy h2 {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  margin: 0 0 1rem;
}

.book-copy > p {
  color: var(--ink-soft);
  margin: 0 0 1.6rem;
}

.book-slots {
  display: grid;
  gap: 0.7rem;
  margin: 0 0 1.6rem;
  padding: 0;
  list-style: none;
}

.book-slot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.2rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.book-slot-day {
  font-family: var(--display);
  font-weight: 700;
  color: var(--indigo-700);
}

.book-slot-time {
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.95rem;
}

.book-email {
  margin: 0 0 0.8rem;
  color: var(--ink-soft);
}

.book-email a {
  font-weight: 700;
}

.form-note {
  font-size: 0.88rem;
  color: var(--ink-soft);
  opacity: 0.85;
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.9rem;
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: 1rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field label {
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--indigo-700);
}

.field input,
.field select,
.field textarea {
  font-family: var(--sans);
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  color: var(--ink);
  width: 100%;
}

.field textarea {
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  background: var(--white);
  border-color: var(--indigo-600);
}

.field.invalid input,
.field.invalid select,
.field.invalid textarea {
  border-color: #c0392b;
  background: #fdf3f1;
}

.form-status {
  margin: 0;
  font-size: 0.92rem;
  color: var(--indigo-700);
  min-height: 1.2em;
}

/* Footer */
.site-footer {
  background: var(--indigo-900);
  color: #c7c5f0;
  padding: 3rem 0 2.2rem;
}

.footer-inner {
  display: grid;
  gap: 1.6rem;
  justify-items: center;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  text-align: left;
}

.footer-brand .brand-mark {
  background: rgba(255, 255, 255, 0.1);
  color: var(--yellow);
}

.footer-name {
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  margin: 0;
}

.footer-brand p:last-child {
  margin: 0.2rem 0 0;
  font-size: 0.9rem;
}

.footer-brand a {
  color: var(--yellow);
  font-weight: 700;
  text-decoration: none;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: #c7c5f0;
  text-decoration: none;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--yellow);
  text-decoration: underline;
}

.footer-fine {
  margin: 0;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  width: 100%;
  font-size: 0.82rem;
  color: #9c99d6;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-inner,
  .rates-grid,
  .book-grid {
    grid-template-columns: 1fr;
  }

  .hero-art {
    order: -1;
    max-width: 460px;
  }

  .timeline {
    grid-template-columns: 1fr;
  }

  .timeline-step::after {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  .about-avatar {
    width: 140px;
    aspect-ratio: 1;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.open {
    max-height: 520px;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.6rem 1rem 1rem;
  }

  .site-nav a {
    padding: 0.85rem 0.7rem;
    border-radius: 10px;
  }

  .site-nav a.nav-cta {
    margin: 0.5rem 0 0;
    text-align: center;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero {
    padding-top: 2.8rem;
  }

  .hero-float {
    position: static;
    margin-top: 1rem;
  }

  .field-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .book-slot {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .footer-brand {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}