/* BKF Walkathon – Landing + Form */
:root {
  --red: #c41e3a;
  --red-dark: #9e1830;
  --black: #1a1a1a;
  --gray-800: #2d2d2d;
  --gray-600: #555;
  --gray-400: #777;
  --gray-200: #e5e5e5;
  --white: #fff;
  --off-white: #f8f8f8;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-head: 'Outfit', system-ui, sans-serif;
  --space: 1.25rem;
  --radius: 8px;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--black);
  background: var(--white);
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space) 2rem;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-wrap {
  display: flex;
  align-items: center;
}

.logo {
  height: 80px;
  width: auto;
}

.nav {
  display: flex;
  gap: 1.5rem;
}

.nav a {
  font-weight: 500;
  color: var(--gray-800);
}

.nav a:hover {
  color: var(--red);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--red);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--red-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--black);
  border: 2px solid var(--gray-800);
}

.btn-secondary:hover {
  background: var(--gray-800);
  color: var(--white);
}

.btn-block {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--black);
}

/* Top banner (above hero) */
.top-banner {
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.banner-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: center;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 3rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-content h1 {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--gray-600);
  margin: 0 0 1.5rem;
}

.hero-details {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.hero-details li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.hero-details .icon {
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-media {
  min-height: 280px;
}

.hero-img {
  width: 100%;
  height: auto;
  min-height: 280px;
  object-fit: contain;
  object-position: center;
  border-radius: var(--radius);
}

/* Sections */
.section {
  padding: 2.5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section h2 {
  font-family: var(--font-head);
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.about-text {
  max-width: 720px;
  color: var(--gray-600);
  margin: 0;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.card {
  padding: 1.5rem;
  background: var(--off-white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}

.card-icon {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 0.75rem;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  margin: 0;
}

/* Two column */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.detail-list,
.participant-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.detail-list li,
.participant-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

/* Route */
.route-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.route-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.route-card:has(input:checked) {
  border-color: var(--red);
  background: rgba(196, 30, 58, 0.06);
}

.route-card.route-locked {
  opacity: 0.7;
  pointer-events: none;
}

.route-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.route-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.route-card strong {
  display: block;
  margin-bottom: 0.25rem;
}

.route-desc {
  font-size: 0.85rem;
  color: var(--gray-600);
  text-align: center;
}

.route-note {
  font-size: 0.9rem;
  color: var(--gray-600);
  margin: 0;
  font-style: italic;
}

.route-in-form {
  border: none;
  padding: 0;
  margin: 0 0 1rem;
}

.route-in-form legend {
  font-weight: 500;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.route-options-inline {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.route-options-inline .route-card {
  flex: 1 1 120px;
}

/* Form */
.form-section {
  background: var(--off-white);
  border-radius: var(--radius);
}

.form-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: start;
}

.registration-form label {
  display: block;
  margin-bottom: 1rem;
}

.registration-form label > span {
  display: block;
  font-weight: 500;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.registration-form input[type="text"],
.registration-form input[type="email"],
.registration-form input[type="tel"],
.registration-form input[type="number"],
.registration-form select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
}

.registration-form input:focus,
.registration-form select:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 2px rgba(196, 30, 58, 0.15);
}

.registration-form input:disabled {
  background: var(--gray-200);
  cursor: not-allowed;
}

.participants-group {
  margin-bottom: 1rem;
}

.participants-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

#participant-fields {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.participant-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: end;
  padding: 0.75rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
}

.participant-row label {
  margin-bottom: 0;
}

.participant-row .person-num {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 0.25rem;
}

.participant-row input[type="text"],
.participant-row select {
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
}

.participant-row .tshirt-wrap {
  min-width: 100px;
}

.radio-group {
  border: none;
  padding: 0;
  margin: 0 0 1rem;
}

.radio-group legend {
  font-weight: 500;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
  cursor: pointer;
}

.radio-label input {
  width: auto;
}

.form-summary {
  background: var(--white);
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  border: 1px solid var(--gray-200);
}

.price-line {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.price-line strong {
  color: var(--red);
}

.gst {
  font-size: 0.9rem;
  color: var(--gray-600);
  font-weight: normal;
}

.inclusions {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
  color: var(--gray-600);
}

.inclusions li::before {
  content: "✓ ";
  color: var(--red);
  font-weight: 600;
}

.otp-step {
  margin-bottom: 1rem;
  padding: 1.25rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
}

.otp-step label {
  margin-bottom: 0.75rem;
}

.otp-message {
  margin: 0 0 1rem;
  color: var(--gray-800);
}

#otp-input {
  font-size: 1.25rem;
  letter-spacing: 0.25em;
  text-align: center;
  width: 100%;
  max-width: 180px;
}

.otp-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.otp-error {
  margin: 0;
  font-size: 0.9rem;
  color: var(--red);
}

.otp-step[hidden] {
  display: none !important;
}

.what-you-get {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.get-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.9rem;
  color: var(--gray-600);
}

.get-icon {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

/* Disclaimer */
.disclaimer-section {
  background: var(--gray-200);
  border-radius: var(--radius);
}

.disclaimer-section p {
  margin: 0;
  color: var(--gray-800);
  max-width: 720px;
}

/* Footer */
.footer {
  background: var(--black);
  color: var(--white);
  padding: 2rem;
  margin-top: 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.footer-logo {
  height: 72px;
  width: auto;
  margin-bottom: 0.75rem;
  filter: brightness(0) invert(1);
}

.footer-brand .social {
  font-size: 0.9rem;
  opacity: 0.85;
}

.footer-contact strong {
  display: block;
  margin-bottom: 0.35rem;
}

.footer-contact p {
  margin: 0;
  font-size: 0.95rem;
  opacity: 0.9;
}

/* Mobile */
@media (max-width: 900px) {
  .nav {
    position: fixed;
    top: 88px;
    right: 0;
    left: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    flex-direction: column;
    padding: 1rem;
    gap: 0.75rem;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .header .btn-primary:first-of-type {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-details {
    justify-content: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-media {
    min-height: 200px;
  }

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

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

  .route-options {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-logo {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 560px) {
  .header {
    padding: var(--space) 1rem;
  }

  .section {
    padding: 1.5rem 1rem;
  }

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

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

  .participant-row .tshirt-wrap {
    min-width: 100%;
  }
}