/* Celia's Tax Services — Full Design System */
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: var(--font-sans);
  background: var(--sand);
  color: var(--dark);
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: var(--font-sans); border: none; outline: none; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

/* Sticky Header */
header.tax-head {
  position: sticky; top: 0; z-index: 100;
  background: #fff; border-bottom: 2px solid var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.head-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; max-width: 1140px; margin: 0 auto;
}
.brand img { height: 44px; width: auto; display: block; }
nav.tax-nav { display: flex; gap: 24px; align-items: center; }
nav.tax-nav a { font-weight: 600; font-size: 0.95rem; color: #334155; transition: color 0.2s; }
nav.tax-nav a:hover, nav.tax-nav a.active { color: var(--teal); }
.head-actions { display: flex; align-items: center; gap: 14px; }
.lang-box {
  display: flex; background: #f1f5f9; border-radius: 20px; overflow: hidden; border: 1px solid var(--border);
}
.lang-box button {
  background: transparent; padding: 6px 14px; font-weight: 700; font-size: 0.8rem; color: #475569;
}
.lang-box button.active { background: var(--navy); color: #fff; }
.btn-book-nav {
  background: var(--teal); color: #fff; font-weight: 700; font-size: 0.92rem;
  padding: 10px 22px; border-radius: 25px; transition: background 0.2s;
}
.btn-book-nav:hover { background: var(--teal-dark); }

/* Hero */
.hero {
  background: linear-gradient(135deg, #0d233a 0%, #0f4c81 100%);
  color: #fff; padding: 85px 20px 95px; text-align: center; position: relative;
}
.hero-tag {
  display: inline-block; background: rgba(0, 137, 123, 0.25); border: 1px solid var(--teal);
  color: #80cbc4; font-size: 0.85rem; font-weight: 700; padding: 6px 18px; border-radius: 20px;
  margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.1em;
}
.hero h1 {
  font-family: var(--font-heading); font-size: clamp(2.8rem, 6.5vw, 4.6rem);
  letter-spacing: 0.03em; max-width: 880px; margin: 0 auto 18px; line-height: 1.05;
}
.hero h1 em { font-style: normal; color: #38bdf8; }
.hero-desc {
  max-width: 680px; margin: 0 auto 32px; font-size: 1.18rem; color: #cbd5e1;
}
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 24px; }
.btn-primary { background: var(--teal); color: #fff; font-weight: 700; padding: 14px 34px; border-radius: 30px; font-size: 1.05rem; }
.btn-primary:hover { background: var(--teal-dark); }
.btn-secondary { background: transparent; border: 2px solid #fff; color: #fff; font-weight: 700; padding: 12px 30px; border-radius: 30px; font-size: 1.05rem; }
.btn-secondary:hover { background: #fff; color: var(--navy); }
.trust-strip {
  display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-top: 25px;
  font-size: 0.88rem; color: #94a3b8;
}
.trust-item { display: flex; align-items: center; gap: 6px; }

/* Services */
.section { padding: 75px 0; }
.sec-kicker {
  font-size: 0.85rem; font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--teal); text-align: center; margin-bottom: 8px;
}
.sec-title {
  font-family: var(--font-heading); font-size: 2.8rem; text-align: center; color: var(--navy); margin-bottom: 45px;
}
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.service-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px;
  box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
.serv-icon { font-size: 2.4rem; margin-bottom: 14px; }
.serv-title { font-family: var(--font-heading); font-size: 1.6rem; color: var(--navy); margin-bottom: 10px; }
.serv-desc { color: var(--muted); font-size: 0.95rem; margin-bottom: 18px; line-height: 1.6; }
.serv-list { list-style: none; padding: 0; }
.serv-list li { font-size: 0.88rem; color: #334155; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.serv-list li::before { content: "✓"; color: var(--teal); font-weight: bold; }

/* Interactive Document Checklist */
.checklist-card {
  background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 40px;
  box-shadow: var(--shadow); max-width: 820px; margin: 0 auto;
}
.check-item {
  display: flex; align-items: flex-start; gap: 14px; padding: 14px 0; border-bottom: 1px solid #f1f5f9;
}
.check-item input[type="checkbox"] {
  width: 22px; height: 22px; accent-color: var(--teal); margin-top: 2px; flex-shrink: 0;
}
.check-label { font-size: 1rem; color: #1e293b; font-weight: 500; }
.check-sub { font-size: 0.85rem; color: var(--muted); margin-top: 2px; }
.check-progress-box {
  margin-top: 25px; padding: 16px 20px; background: var(--teal-light); border-radius: 8px;
  display: flex; justify-content: space-between; align-items: center;
}
.check-progress-text { font-weight: 700; color: var(--teal-dark); font-size: 0.95rem; }

/* Booking Section */
.booking-card {
  background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 40px;
  box-shadow: var(--shadow); max-width: 800px; margin: 0 auto;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-weight: 700; font-size: 0.88rem; color: #1e293b; }
.form-group input, .form-group select {
  padding: 12px; border: 1px solid var(--border); border-radius: 6px; font-family: var(--font-sans); font-size: 0.95rem;
}
.form-group input:focus, .form-group select:focus { border-color: var(--teal); outline: none; }
.btn-submit-booking {
  width: 100%; background: var(--navy); color: #fff; font-weight: 700; font-size: 1.1rem;
  padding: 15px; border-radius: 30px; margin-top: 10px; transition: background 0.2s;
}
.btn-submit-booking:hover { background: var(--navy-light); }

/* Floating AI Chat Assistant */
.ai-widget { position: fixed; bottom: 25px; right: 25px; z-index: 150; }
.ai-trigger {
  background: var(--teal); color: #fff; width: 64px; height: 64px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 1.8rem;
  box-shadow: 0 6px 25px rgba(0, 137, 123, 0.4); cursor: pointer; transition: transform 0.2s;
}
.ai-trigger:hover { transform: scale(1.08); background: var(--teal-dark); }
.chat-window {
  position: absolute; bottom: 80px; right: 0; width: 360px; height: 480px;
  background: #fff; border-radius: 14px; box-shadow: 0 12px 40px rgba(0,0,0,0.22);
  display: none; flex-direction: column; overflow: hidden; border: 1px solid var(--border);
}
.chat-window.active { display: flex; }
.chat-head {
  background: var(--navy); color: #fff; padding: 16px; display: flex; justify-content: space-between; align-items: center;
}
.chat-body { flex-grow: 1; padding: 16px; overflow-y: auto; background: #f8fafc; font-size: 0.92rem; }
.chat-msg { margin-bottom: 12px; max-width: 85%; padding: 10px 14px; border-radius: 12px; line-height: 1.5; }
.chat-msg.bot { background: #fff; color: #1e293b; border: 1px solid var(--border); }
.chat-msg.user { background: var(--teal); color: #fff; margin-left: auto; }
.chat-input-bar { display: flex; border-top: 1px solid var(--border); }
.chat-input-bar input { flex-grow: 1; border: none; padding: 12px; outline: none; font-size: 0.92rem; }
.chat-input-bar button { background: var(--navy); color: #fff; padding: 0 18px; font-weight: 700; }

/* Footer */
footer.tax-foot {
  background: var(--navy); color: #94a3b8; padding: 50px 0 25px; text-align: center;
  border-top: 3px solid var(--teal);
}

@media (max-width: 768px) {
  nav.tax-nav { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .checklist-card, .booking-card { padding: 24px; }
}