:root{
  --primary-blue:#1e3a8a;
  --accent-red:#dc2626;
  --light-bg:#f3f4f6;
}

*{ box-sizing:border-box; }

body{
  font-family:'Inter',sans-serif;
  color:#333;
  overflow-x:hidden;
}

h1,h2,h3,h4{ font-family:'Merriweather',serif; }

/* Hero overlay */
.hero-overlay{
  background:linear-gradient(to right, rgba(30,58,138,.90), rgba(30,58,138,.40));
}

/* Card hover */
.service-card{
  transition: transform .3s ease, box-shadow .3s ease;
}
.service-card:hover{
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0,0,0,.1), 0 10px 10px -5px rgba(0,0,0,.04);
}

/* Sticky navbar */
header.sticky{
  background-color: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0,0,0,.1);
  padding-top:10px;
  padding-bottom:10px;
}

/* Image symmetry */
.doctor-img{
  object-fit:cover;
  object-position:top;
  width:100%;
  height:250px;
}
.gallery-img{
  object-fit:cover;
  width:100%;
  height:100%;
}

/* =========================
   WhatsApp Floating + Modal
========================= */
.wa-fab{
  position:fixed;
  right:18px;
  bottom:18px;
  width:56px;
  height:56px;
  border-radius:999px;
  border:none;
  cursor:pointer;
  background:#16a34a;
  color:#fff;
  box-shadow:0 10px 25px rgba(0,0,0,.2);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:28px;
  z-index:9999;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.wa-fab:hover{
  transform: translateY(-2px);
  box-shadow:0 14px 30px rgba(0,0,0,.22);
  background:#15803d;
}

.wa-modal.hidden{ display:none; }
.wa-modal{
  position:fixed;
  inset:0;
  z-index:99999;
  display:block;
}
.wa-backdrop{
  position:absolute;
  inset:0;
  background:rgba(0,0,0,.55);
}
.wa-card{
  position:relative;
  width:min(520px, calc(100% - 24px));
  margin: 90px auto 0;
  background:#fff;
  border-radius:18px;
  overflow:hidden;
  box-shadow:0 25px 70px rgba(0,0,0,.35);
}
.wa-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
  padding:18px 18px 12px;
  background: linear-gradient(90deg, #16a34a, #0ea5e9);
  color:#fff;
}
.wa-badge{
  width:44px;
  height:44px;
  border-radius:14px;
  background: rgba(255,255,255,.18);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
}
.wa-title{ font-weight:800; font-size:18px; line-height:1.2; }
.wa-sub{ font-size:12px; opacity:.95; margin-top:2px; }

.wa-x{
  border:none;
  background:transparent;
  color:#fff;
  font-size:28px;
  line-height:1;
  cursor:pointer;
  padding:0 6px;
  opacity:.95;
}
.wa-x:hover{ opacity:1; }

.wa-body{ padding:16px 18px 18px; }
.wa-label{ display:block; font-size:12px; color:#334155; font-weight:700; margin-bottom:6px; }
.wa-textarea{
  width:100%;
  border:1px solid #e2e8f0;
  border-radius:12px;
  padding:12px 12px;
  outline:none;
  resize:vertical;
  font-size:14px;
}
.wa-textarea:focus{
  border-color:#0ea5e9;
  box-shadow:0 0 0 4px rgba(14,165,233,.15);
}

.wa-actions{
  display:flex;
  gap:10px;
  margin-top:12px;
  flex-wrap:wrap;
}
.wa-btn{
  border:none;
  cursor:pointer;
  border-radius:12px;
  padding:10px 14px;
  font-weight:800;
  font-size:14px;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.wa-primary{
  background:#16a34a;
  color:#fff;
}
.wa-primary:hover{ background:#15803d; }
.wa-ghost{
  background:#f1f5f9;
  color:#0f172a;
}
.wa-ghost:hover{ background:#e2e8f0; }

.wa-note{
  margin-top:10px;
  font-size:12px;
  color:#64748b;
}