/* ============================================================
   Design tokens — colours, shadow, layout width
   ============================================================ */
:root {
  --blue-deep: #0000cd;
  --blue-mid: #5a77ef;
  --blue-page: #6f8bc8;
  --blue-pale: #bdcae6;
  --crimson: #ac1b45;
  --green: #00bf63;
  --purple: #8c52ff;
  --orange: #cd7b00;
  --ink: #12183a;
  --white: #ffffff;

  --shadow-hard: 0 6px 0 rgba(0, 0, 0, 0.22);
  --radius: 18px;
  --maxw: 1080px;
}

/* ============================================================
   Reset & base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--blue-page);
  color: var(--ink);
  font-family:
    "Barlow",
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

h1,
h2,
h3,
.display {
  font-family: "Anton", Impact, "Arial Narrow Bold", sans-serif;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0;
  line-height: 1.05;
}

a {
  color: inherit;
}

/* ============================================================
   Header — banner + level nav
   ============================================================ */
.banner {
  background: var(--blue-deep);
  color: var(--white);
  text-align: center;
  padding: 22px 20px 18px;
  border-bottom: 5px solid rgba(0, 0, 0, 0.25);
}
.banner h1 {
  font-size: clamp(1.75rem, 7.2vw, 4.4rem);
  text-shadow: 0 4px 0 rgba(0, 0, 0, 0.28);
}

.levels {
  background: var(--blue-mid);
  color: var(--white);
  display: flex;
  justify-content: center;
  gap: clamp(14px, 6vw, 80px);
  flex-wrap: wrap;
  padding: 13px 20px;
  font-family: "Anton", Impact, sans-serif;
  font-size: clamp(1.25rem, 5vw, 3rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-shadow: 0 3px 0 rgba(0, 0, 0, 0.18);
}

/* ============================================================
   Hero — photo + intro
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 38px;
  align-items: center;
  padding: 52px 0 44px;
}
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 26px;
    justify-items: center;
    text-align: center;
    padding: 36px 0 32px;
  }
}
@media (orientation: landscape) and (max-height: 500px) and (min-width: 700px) {
  .hero {
    grid-template-columns: 190px 1fr;
    gap: 52px;
    padding: 20px 0;
  }
}

.photo-frame {
  background: var(--white);
  padding: 13px 13px 13px;
  border: 3px solid var(--ink);
  border-radius: 6px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.32);
  transform: rotate(-2.2deg);
  transition: transform 0.35s ease;
  width: 100%;
  max-width: 300px;
}
.photo-frame:hover {
  transform: rotate(0deg) scale(1.015);
}
.photo-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
}
.photo-frame figcaption {
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  text-align: center;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--ink);
  padding-top: 11px;
}
@media (orientation: landscape) and (max-height: 500px) and (min-width: 700px) {
  .photo-frame {
    max-width: 190px;
    transform: rotate(-2.2deg) translateX(-14px);
  }
  .photo-frame:hover {
    transform: translateX(-14px) scale(1.015);
  }
}

.hero h2 {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  color: var(--white);
  text-shadow: 0 4px 0 rgba(0, 0, 0, 0.25);
}
.hero .role {
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  font-weight: 600;
  color: var(--white);
  margin: 10px 0 20px;
  max-width: 44ch;
}
@media (max-width: 900px) {
  .hero .role {
    margin-left: auto;
    margin-right: auto;
  }
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
}
@media (max-width: 900px) {
  .badges {
    justify-content: center;
  }
}
.badge {
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  color: var(--white);
  font-size: clamp(1.05rem, 2.9vw, 1.45rem);
  letter-spacing: 0.03em;
  padding: 13px 22px;
  border-radius: 12px;
  box-shadow: var(--shadow-hard);
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.18);
}
.badge.purple {
  background: var(--purple);
}
.badge.green {
  background: var(--green);
}
.badge.orange {
  background: var(--orange);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 28px;
}
.cta-row .btn {
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  padding: 18px 34px;
  border-radius: 13px;
}
@media (max-width: 900px) {
  .cta-row {
    justify-content: center;
  }
}
@media (max-width: 400px) {
  .cta-row {
    flex-direction: column;
  }
  .cta-row .btn {
    width: 100%;
    text-align: center;
  }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-block;
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1.05rem;
  padding: 14px 26px;
  border-radius: 11px;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  color: var(--white);
  background: var(--blue-deep);
  box-shadow: var(--shadow-hard);
  transition:
    transform 0.12s ease,
    box-shadow 0.12s ease,
    filter 0.12s ease;
}
.btn:hover {
  filter: brightness(1.12);
}
.btn:active {
  transform: translateY(5px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.22);
}

@media (hover: hover) {
  .cta-row .btn {
    transition:
      transform 0.2s ease-out,
      box-shadow 0.2s ease-out,
      filter 0.15s ease;
  }
  .cta-row .btn:hover {
    transform: scale(1.06);
    transition:
      transform 0.22s cubic-bezier(0.2, 0.85, 0.3, 1.4),
      box-shadow 0.18s ease,
      filter 0.12s ease;
    box-shadow:
      0 10px 0 rgba(0, 0, 0, 0.22),
      0 16px 26px rgba(0, 0, 0, 0.25);
  }
  .cta-row .btn:active {
    transform: scale(1.02) translateY(5px);
    box-shadow: 0 3px 0 rgba(0, 0, 0, 0.22);
  }
}
.btn.crimson {
  background: var(--crimson);
}
.btn.green {
  background: var(--green);
}
.btn.ghost {
  background: transparent;
  border: 3px solid var(--white);
  box-shadow: none;
  padding: 11px 23px;
}
.btn.ghost:active {
  transform: translateY(2px);
}

/* The booking form's submit button is full-width and larger than
   other buttons on the page — replaces an inline style="" attribute
   so the Content-Security-Policy can drop 'unsafe-inline' for styles. */
#submit-btn {
  width: 100%;
  font-size: 1.2rem;
  padding: 17px;
}

/* ============================================================
   Contact bar (WhatsApp)
   ============================================================ */
.contact-bar {
  background: var(--crimson);
  border-top: 6px solid #000;
  border-bottom: 6px solid #000;
  padding: 18px 20px;
  text-align: center;
}
.contact-bar a {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--white);
  text-decoration: none;
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  font-size: clamp(1.15rem, 4.4vw, 2.35rem);
  letter-spacing: 0.02em;
  text-shadow: 0 3px 0 rgba(0, 0, 0, 0.3);
  transform-origin: center;
}
@media (hover: hover) {
  .contact-bar a {
    transition:
      transform 0.2s cubic-bezier(0.2, 0.85, 0.3, 1.25),
      filter 0.15s ease;
  }
  .contact-bar a:hover {
    transform: scale(1.12);
    filter: brightness(1.08);
  }
  .contact-bar a:active {
    transform: scale(1.05);
  }
}
.contact-bar svg {
  width: 1.15em;
  height: 1.15em;
  flex: none;
}
.contact-bar small {
  display: block;
  font-family: "Barlow", sans-serif;
  text-transform: none;
  color: #ffd9e3;
  font-size: 0.95rem;
  letter-spacing: 0;
  margin-top: 6px;
  text-shadow: none;
  font-weight: 500;
}

/* ============================================================
   Section layout & headings
   ============================================================ */
section {
  padding: 52px 0;
}

.section-head {
  text-align: center;
  color: var(--white);
  font-size: clamp(1.7rem, 5vw, 2.7rem);
  text-shadow: 0 4px 0 rgba(0, 0, 0, 0.28);
  margin-bottom: 8px;
}
.section-head::after {
  content: "";
  display: block;
  width: clamp(200px, 52%, 420px);
  height: 6px;
  margin: 18px auto 0;
  background: var(--white);
  border-radius: 3px;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.22);
}
.section-sub {
  text-align: center;
  color: #eaf0ff;
  max-width: 60ch;
  margin: 0 auto 32px;
  font-weight: 500;
}

/* ============================================================
   Cards & grids
   ============================================================ */
.card {
  background: var(--blue-deep);
  color: var(--white);
  border-radius: var(--radius);
  padding: 28px 30px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
}
.card h3 {
  font-size: 1.5rem;
  margin-bottom: 14px;
  color: var(--white);
}
.card ul {
  margin: 0;
  padding-left: 1.15em;
}
.card li {
  margin-bottom: 11px;
}
.card li:last-child {
  margin-bottom: 0;
}
.card p {
  margin: 0 0 14px;
}
.card p:last-child {
  margin-bottom: 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 26px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
}

/* ============================================================
   Testimonials
   ============================================================ */
.quote {
  margin: 0 0 18px;
  padding-left: 16px;
  border-left: 5px solid var(--green);
  font-size: 1.06rem;
  font-style: italic;
}
.quote:last-child {
  margin-bottom: 0;
}

.featured-review {
  margin: 26px 0 0;
  background: var(--white);
  color: var(--ink);
  border-radius: var(--radius);
  border-left: 10px solid var(--green);
  padding: clamp(26px, 4vw, 38px) clamp(24px, 4vw, 44px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
  position: relative;
}
.featured-review::before,
.featured-review::after {
  font-family: Georgia, serif;
  position: absolute;
  font-size: 5.5rem;
  line-height: 1;
  color: var(--green);
  opacity: 0.28;
  pointer-events: none;
  z-index: 0;
}
.featured-review::before {
  content: "\201C";
  top: -8px;
  left: 14px;
}
.featured-review::after {
  content: "\201D";
  bottom: -20px;
  right: 18px;
}

.featured-review blockquote {
  margin: 0;
  font-size: clamp(1.02rem, 2.2vw, 1.2rem);
  line-height: 1.7;
  font-style: italic;
  position: relative;
  z-index: 1;
}
.featured-review strong {
  font-style: normal;
  color: var(--blue-deep);
}
.featured-review figcaption {
  position: relative;
  z-index: 1;
  margin-top: 16px;
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.88rem;
  color: var(--crimson);
}
.featured-review figcaption::before {
  content: "— ";
}

/* ============================================================
   Subject/topic cards
   ============================================================ */
.topic-card {
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
}
.topic-card .tier {
  display: block;
  background: var(--blue-deep);
  color: var(--white);
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  font-size: clamp(1.6rem, 5.2vw, 2.3rem);
  line-height: 1.1;
  letter-spacing: 0.03em;
  text-align: center;
  padding: 12px 14px;
  border-radius: 11px;
  margin: 0 0 14px;
  box-shadow: var(--shadow-hard);
  text-shadow: 0 3px 0 rgba(0, 0, 0, 0.22);
}
.topic-card h3 {
  color: #48507a;
  font-size: clamp(1.2rem, 2.6vw, 1.4rem);
  letter-spacing: 0.08em;
  text-align: center;
  margin-bottom: 16px;
}
.topic-card ul {
  padding-left: 1.1em;
}
.topic-card li {
  margin-bottom: 8px;
}

/* ============================================================
   Booking form
   ============================================================ */
.booking-card {
  background: var(--white);
  color: var(--ink);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 38px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  border: 3px solid var(--ink);
}

fieldset {
  border: 0;
  padding: 0;
  margin: 0 0 26px;
}
fieldset:last-of-type {
  margin-bottom: 20px;
}

legend,
.field-label {
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--blue-deep);
  padding: 0;
  margin-bottom: 4px;
  display: block;
}
.hint {
  font-size: 0.92rem;
  color: #5a6180;
  margin: 0 0 12px;
}

/* Replaces an inline style="" attribute on the "Email (optional)" label. */
.field-optional {
  font-weight: 400;
  text-transform: none;
  font-family: "Barlow", sans-serif;
  color: #5a6180;
}

input[type="text"],
input[type="tel"],
input[type="email"],
select,
textarea {
  width: 100%;
  font-family: "Barlow", sans-serif;
  font-size: 1rem;
  padding: 12px 14px;
  border: 2px solid #c3cbe4;
  border-radius: 10px;
  background: #f7f9ff;
  color: var(--ink);
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--blue-deep);
  box-shadow: 0 0 0 4px rgba(0, 0, 205, 0.14);
}
textarea {
  resize: vertical;
  min-height: 104px;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.field {
  margin-bottom: 16px;
}

.choice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.choice input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.choice span {
  display: inline-block;
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 12px 22px;
  border-radius: 11px;
  border: 3px solid var(--blue-deep);
  color: var(--blue-deep);
  background: var(--white);
  cursor: pointer;
  user-select: none;
  transition: all 0.15s ease;
}
.choice input:checked + span {
  background: var(--blue-deep);
  color: var(--white);
  box-shadow: var(--shadow-hard);
}
.choice input:focus-visible + span {
  box-shadow: 0 0 0 4px rgba(0, 0, 205, 0.3);
}

.slot-day {
  margin-bottom: 16px;
}
.slot-day h4 {
  font-family: "Anton", Impact, sans-serif;
  text-transform: uppercase;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  color: var(--ink);
  margin: 0 0 8px;
  padding-bottom: 5px;
  border-bottom: 2px solid #e2e7f5;
}
.slot-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}
.slot input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.slot span {
  display: inline-block;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 9px 15px;
  border-radius: 9px;
  border: 2px solid #c3cbe4;
  background: #f7f9ff;
  cursor: pointer;
  user-select: none;
  transition: all 0.13s ease;
}
.slot span:hover {
  border-color: var(--green);
}
.slot input:checked + span {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
  font-weight: 700;
}
.slot input:focus-visible + span {
  box-shadow: 0 0 0 4px rgba(0, 191, 99, 0.35);
}
.slot.flexible span {
  border-style: dashed;
}

.tz-note {
  font-size: 0.9rem;
  color: #5a6180;
  margin-top: 12px;
}

.privacy {
  font-size: 0.88rem;
  color: #5a6180;
  margin-top: 16px;
}

/* ============================================================
   Form status messages & setup warning
   ============================================================ */
.status {
  margin-top: 18px;
  padding: 15px 18px;
  border-radius: 11px;
  font-weight: 600;
  display: none;
}
.status.show {
  display: block;
}
.status.ok {
  background: #e4fbef;
  color: #0a6b3c;
  border: 2px solid var(--green);
}
.status.err {
  background: #fde8ee;
  color: #8a102f;
  border: 2px solid var(--crimson);
}
.status.info {
  background: #fff5df;
  color: #7a5200;
  border: 2px solid var(--orange);
}

.setup-warning {
  background: #fff5df;
  border: 2px dashed var(--orange);
  color: #7a5200;
  padding: 14px 18px;
  border-radius: 11px;
  margin-bottom: 22px;
  font-size: 0.94rem;
  display: none;
}
.setup-warning.show {
  display: block;
}
.setup-warning code {
  background: rgba(0, 0, 0, 0.07);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.hp {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

button[disabled] {
  opacity: 0.6;
  cursor: progress;
}

/* ============================================================
   Footer
   ============================================================ */
footer {
  background: var(--blue-pale);
  color: var(--ink);
  padding: 26px 20px;
  text-align: center;
}
.affil {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(26px, 7vw, 64px);
  flex-wrap: wrap;
}
.affil img {
  display: block;
  width: auto;
}
.logo-cern {
  height: clamp(46px, 9vw, 62px);
}
.logo-imperial {
  height: clamp(19px, 3.8vw, 26px);
}
footer small {
  display: block;
  margin-top: 14px;
  color: #3a4468;
  letter-spacing: 0;
  font-family: "Barlow", sans-serif;
  text-transform: none;
}

/* ============================================================
   Accessibility helpers
   ============================================================ */
.skip {
  position: absolute;
  left: -9999px;
  background: var(--white);
  color: var(--blue-deep);
  padding: 12px 18px;
  z-index: 100;
  border-radius: 0 0 10px 0;
  font-weight: 700;
}
.skip:focus {
  left: 0;
  top: 0;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
  html {
    scroll-behavior: auto;
  }
  .photo-frame {
    transform: none;
  }
  .cta-row .btn:hover {
    transform: none;
  }
}