/* ╔══════════════════════════════════════════════════════════╗
   ║  Amour Cruise — Booking Page                              ║
   ║  Ocean Blue Luxury · 2-col sidebar + form                ║
   ╚══════════════════════════════════════════════════════════╝ */

:root {
  --bk-ocean:      #0d6e94;
  --bk-ocean-mid:  #1a85b8;
  --bk-ocean-deep: #063f5c;
  --bk-ocean-navy: #032e45;
  --bk-sky:        #d4a373;
  --bk-pale:       #e8c89f;
  --bk-mist:       #eef4f8;
  --bk-foam:       #f0f7fb;
  --bk-line:       #dde7ed;
  --bk-line-2:     #a5cce0;
  --bk-text:       #1a2e38;
  --bk-muted:      #6b8597;

  --bk-serif: 'Playfair Display', Georgia, serif;
  --bk-ital:  'Cormorant Garamond', Georgia, serif;
  --bk-sans:  'Inter', system-ui, sans-serif;
}

/* ═════════════════════════════════════════════════════════════
   HERO
═════════════════════════════════════════════════════════════ */
.bk-hero {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  overflow: hidden;
  padding: 8rem 1.5rem 4rem;
}

.bk-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.bk-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.bk-hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(3,46,69,0.55), rgba(3,46,69,0.85));
}

.bk-hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.bk-eyebrow {
  display: inline-block;
  font-family: var(--bk-sans);
  font-size: 0.72rem;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--bk-sky);
  font-weight: 600;
  margin-bottom: 1rem;
}

.bk-hero-content h1 {
  font-family: var(--bk-serif);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 400;
  color: #fff;
  margin: 0 0 1rem;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.bk-hero-content p {
  font-family: var(--bk-ital);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--bk-pale);
  line-height: 1.6;
  margin: 0;
}

/* ═════════════════════════════════════════════════════════════
   SECTION
═════════════════════════════════════════════════════════════ */
.bk-section {
  padding: 5rem 0;
  background: var(--bk-foam);
}

@media (max-width: 640px) {
  .bk-section { padding: 3rem 0; }
}

.bk-intro {
  max-width: 720px;
  margin: 0 auto 3rem;
  text-align: center;
  color: var(--bk-muted);
  line-height: 1.8;
  font-size: 1.02rem;
}

.bk-intro h2,
.bk-intro h3 {
  font-family: var(--bk-serif);
  color: var(--bk-ocean-deep);
  font-weight: 400;
  margin-bottom: 1rem;
}

/* ═════════════════════════════════════════════════════════════
   ALERTS
═════════════════════════════════════════════════════════════ */
.bk-alert {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.bk-alert-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
  color: #fff;
}

.bk-alert strong { display: block; margin-bottom: 0.25rem; font-size: 1rem; }
.bk-alert p { margin: 0; font-size: 0.9rem; line-height: 1.55; }

.bk-alert-success {
  background: #d4edda;
  color: #155724;
  border-left: 4px solid #28a745;
}
.bk-alert-success .bk-alert-icon { background: #28a745; }

.bk-alert-error {
  background: #f8d7da;
  color: #721c24;
  border-left: 4px solid #dc3545;
}
.bk-alert-error .bk-alert-icon { background: #dc3545; }

/* ═════════════════════════════════════════════════════════════
   GRID — Sidebar + Form
═════════════════════════════════════════════════════════════ */
.bk-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.4fr;
  gap: 2.5rem;
  align-items: start;
  max-width: 1180px;
  margin: 0 auto;
}

@media (max-width: 980px) {
  .bk-grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ═════════════════════════════════════════════════════════════
   SIDEBAR (Left)
═════════════════════════════════════════════════════════════ */
.bk-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (max-width: 980px) {
  .bk-sidebar { position: static; }
}

.bk-sidebar-card {
  background: var(--bk-ocean-navy);
  color: #fff;
  border-radius: 10px;
  padding: 2rem 1.75rem;
  position: relative;
  overflow: hidden;
}
.bk-sidebar-card::before {
  content: '';
  position: absolute;
  top: -50px; right: -50px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(92,200,240,0.15), transparent 70%);
}

.bk-sidebar-card h3 {
  font-family: var(--bk-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--bk-sky);
  margin: 0 0 1.5rem;
  letter-spacing: -0.005em;
  position: relative;
  z-index: 1;
}

.bk-perks {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
  z-index: 1;
}

.bk-perks li {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 0.85rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(92,200,240,0.15);
  align-items: start;
}
.bk-perks li:first-child { padding-top: 0; }
.bk-perks li:last-child { border-bottom: none; padding-bottom: 0; }

.bk-perk-ico {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(92,200,240,0.18);
  color: var(--bk-sky);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 700;
  flex-shrink: 0;
}

.bk-perks strong {
  display: block;
  font-family: var(--bk-serif);
  font-size: 1.02rem;
  color: #fff;
  font-weight: 500;
  margin-bottom: 0.2rem;
}

.bk-perks small {
  display: block;
  color: rgba(255,255,255,0.65);
  font-size: 0.84rem;
  line-height: 1.5;
}

/* Sidebar contact card */
.bk-sidebar-contact {
  background: #fff;
  border-radius: 10px;
  padding: 1.75rem 1.6rem;
  border: 1px solid var(--bk-line);
  border-top: 3px solid var(--bk-ocean);
}

.bk-sidebar-contact h4 {
  font-family: var(--bk-serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--bk-ocean-deep);
  margin: 0 0 0.5rem;
}

.bk-sidebar-contact p {
  color: var(--bk-muted);
  font-size: 0.88rem;
  line-height: 1.55;
  margin: 0 0 1rem;
}

.bk-contact-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0;
  color: var(--bk-ocean);
  font-size: 0.93rem;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px dashed var(--bk-line);
  transition: color 0.25s;
}
.bk-contact-link:last-child { border-bottom: none; }
.bk-contact-link:hover { color: var(--bk-ocean-mid); }

/* ═════════════════════════════════════════════════════════════
   FORM (Right)
═════════════════════════════════════════════════════════════ */
.bk-form-wrap {
  background: #fff;
  border-radius: 10px;
  padding: 2.5rem 2.5rem 2rem;
  box-shadow: 0 20px 50px -20px rgba(10, 110, 159, 0.2);
  border: 1px solid var(--bk-line);
}

@media (max-width: 540px) {
  .bk-form-wrap { padding: 1.75rem 1.5rem; }
}

/* Steps */
.bk-step {
  border: none;
  margin: 0 0 2rem;
  padding: 0;
}
.bk-step:last-of-type { margin-bottom: 1.5rem; }

.bk-step legend {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--bk-serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--bk-ocean-deep);
  margin-bottom: 1.25rem;
  padding: 0;
  width: 100%;
  border-bottom: 1px solid var(--bk-line);
  padding-bottom: 0.85rem;
  letter-spacing: -0.005em;
}

.bk-step-num {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--bk-ocean);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--bk-sans);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* Field rows */
.bk-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.25rem;
}
@media (max-width: 540px) {
  .bk-row-2 { grid-template-columns: 1fr; }
}

.bk-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
  width: 100%;
}

.bk-field > span {
  font-family: var(--bk-sans);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bk-ocean);
  font-weight: 600;
}

.bk-field em {
  color: #c0392b;
  font-style: normal;
  margin-left: 2px;
}

.bk-field input,
.bk-field select,
.bk-field textarea {
  padding: 0.85rem 1rem;
  border: 1px solid var(--bk-line);
  border-radius: 6px;
  font-family: var(--bk-sans);
  font-size: 0.96rem;
  color: var(--bk-text);
  background: var(--bk-foam);
  transition: all 0.25s;
  width: 100%;
}

.bk-field input:focus,
.bk-field select:focus,
.bk-field textarea:focus {
  outline: none;
  border-color: var(--bk-ocean);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(10, 110, 159, 0.12);
}

.bk-field select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%230a6e9f'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.06l3.71-3.83a.75.75 0 111.08 1.04l-4.25 4.39a.75.75 0 01-1.08 0L5.21 8.27a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  background-size: 18px;
  padding-right: 2.5rem;
}

.bk-field textarea {
  resize: vertical;
  min-height: 90px;
  line-height: 1.6;
}

.bk-hint {
  font-size: 0.78rem;
  color: var(--bk-muted);
  font-style: italic;
  margin-top: 0.15rem;
}

.bk-err {
  color: #c0392b;
  font-size: 0.82rem;
  margin-top: 0.2rem;
  font-weight: 500;
}

/* Checkbox */
.bk-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.85rem 0;
  cursor: pointer;
  font-size: 0.92rem;
  color: var(--bk-text);
  line-height: 1.55;
}

.bk-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--bk-ocean);
  cursor: pointer;
}

.bk-checkbox span a {
  color: var(--bk-ocean);
  text-decoration: underline;
}

/* Submit */
.bk-actions {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--bk-line);
}

.bk-submit {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: var(--bk-ocean);
  color: #fff;
  border: none;
  padding: 1.1rem 2rem;
  border-radius: 6px;
  font-family: var(--bk-sans);
  font-size: 0.92rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.bk-submit:hover {
  background: var(--bk-ocean-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -8px rgba(10, 110, 159, 0.5);
}

.bk-submit span { transition: transform 0.25s; }
.bk-submit:hover span { transform: translateX(4px); }

.bk-trust {
  text-align: center;
  margin: 1rem 0 0;
  font-size: 0.82rem;
  color: var(--bk-muted);
  font-family: var(--bk-ital);
  font-style: italic;
}

/* ═════════════════════════════════════════════════════════════
   REVEAL
═════════════════════════════════════════════════════════════ */
.bk-sidebar.reveal,
.bk-form-wrap.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.bk-sidebar.reveal.visible,
.bk-sidebar.reveal.in,
.bk-form-wrap.reveal.visible,
.bk-form-wrap.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
}