/* ===== TYPOGRAPHY ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@600;700;800&family=Noto+Sans+Tamil:wght@400;500;600;700;800&display=swap');

/* Tamil font override */
.lang-ta{font-family:'Noto Sans Tamil','Inter',system-ui,sans-serif}
.lang-ta h1,.lang-ta h2,.lang-ta h3,.lang-ta h4{font-family:'Noto Sans Tamil','Plus Jakarta Sans','Inter',sans-serif}

h1,h2,h3,h4{font-family:'Plus Jakarta Sans','Inter',sans-serif;line-height:1.2;color:var(--text)}
h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:700;letter-spacing:-.01em}
h3{font-size:1.15rem;font-weight:700}

/* ===== EMERGENCY BANNER ===== */
.emergency-bar{background:var(--accent-warm);color:#fff;text-align:center;padding:8px var(--space-md);font-size:.85rem;font-weight:600;letter-spacing:.03em}
.emergency-bar a{color:#fff;text-decoration:underline}

/* ===== HEADER ===== */
.header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--border);backdrop-filter:blur(12px);transition:box-shadow var(--dur) var(--ease)}
.header.scrolled{box-shadow:var(--shadow-md)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 var(--space-lg);display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px}
.logo svg{width:40px;height:40px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:1.05rem;color:var(--primary);letter-spacing:-.01em}
.logo-tagline{font-size:.65rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;font-weight:600}

.nav{display:flex;align-items:center;gap:var(--space-lg)}
.nav a{font-size:.875rem;font-weight:500;color:var(--text-secondary);transition:color var(--dur) var(--ease);position:relative}
.nav a:hover,.nav a.active{color:var(--primary)}
.nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--primary);transition:width var(--dur) var(--ease);border-radius:2px}
.nav a:hover::after{width:100%}

.header-actions{display:flex;align-items:center;gap:var(--space-md)}
.lang-toggle{display:flex;align-items:center;gap:4px;padding:6px 14px;border-radius:var(--radius-full);background:var(--primary-bg);color:var(--primary);font-size:.8rem;font-weight:600;transition:all var(--dur) var(--ease);border:1.5px solid var(--primary);cursor:pointer;white-space:nowrap}
.lang-toggle:hover{background:var(--primary);color:var(--text-on-primary)}
.lang-label{pointer-events:none}
.theme-toggle{width:38px;height:38px;border-radius:var(--radius-full);display:grid;place-items:center;background:var(--bg-alt);color:var(--text-secondary);transition:all var(--dur) var(--ease)}
.theme-toggle:hover{background:var(--primary-bg);color:var(--primary)}
.mobile-menu-btn{display:none;width:38px;height:38px;border-radius:var(--radius-sm);place-items:center;background:var(--bg-alt);color:var(--text)}

/* ===== HERO ===== */
.hero{position:relative;padding:var(--space-3xl) var(--space-lg) var(--space-2xl);background:linear-gradient(135deg,var(--teal-600) 0%,var(--teal-500) 40%,var(--teal-400) 100%);color:#fff;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;border-radius:50%;background:rgba(255,255,255,.06)}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.04)}
.hero-inner{max-width:1200px;margin:0 auto;position:relative;z-index:1}
.hero h1{color:#fff;margin-bottom:var(--space-md)}
.hero p{font-size:1.1rem;opacity:.9;max-width:540px;margin-bottom:var(--space-xl)}
.hero-btns{display:flex;gap:var(--space-md);flex-wrap:wrap}

.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius-full);font-weight:600;font-size:.95rem;transition:all var(--dur) var(--ease);letter-spacing:.01em}
.btn-white{background:#fff;color:var(--teal-700)}
.btn-white:hover{background:var(--teal-50);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-outline{border:2px solid rgba(255,255,255,.5);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.15);border-color:#fff}
.btn-primary{background:var(--primary);color:var(--text-on-primary)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}

/* Hero Feature Cards */
.hero-features{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md);margin-top:var(--space-2xl)}
.hero-card{background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-lg);padding:var(--space-lg);text-align:center;transition:all var(--dur) var(--ease)}
.hero-card:hover{background:rgba(255,255,255,.2);transform:translateY(-4px)}
.hero-card-icon{width:48px;height:48px;margin:0 auto var(--space-sm);background:rgba(255,255,255,.2);border-radius:var(--radius-md);display:grid;place-items:center}
.hero-card-icon svg{width:24px;height:24px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hero-card h3{color:#fff;font-size:.95rem;margin-bottom:4px}
.hero-card p{color:rgba(255,255,255,.75);font-size:.8rem}

/* ===== SECTIONS ===== */
.section{padding:var(--space-3xl) var(--space-lg)}
.section-alt{background:var(--bg-alt)}
.section-inner{max-width:1200px;margin:0 auto}
.section-header{text-align:center;margin-bottom:var(--space-2xl)}
.section-header p{color:var(--text-secondary);margin-top:var(--space-sm);max-width:540px;margin-left:auto;margin-right:auto}
.section-label{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--primary);background:var(--primary-bg);padding:6px 16px;border-radius:var(--radius-full);margin-bottom:var(--space-md)}

/* ===== SERVICES GRID ===== */
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--space-lg)}
.service-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-xl) var(--space-lg);transition:all var(--dur) var(--ease);position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--teal-400),var(--teal-600));transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.service-card:hover::before{transform:scaleX(1)}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--teal-200)}
[data-theme="dark"] .service-card:hover{border-color:var(--teal-700)}
.service-icon{width:52px;height:52px;border-radius:var(--radius-md);background:var(--primary-bg);display:grid;place-items:center;margin-bottom:var(--space-md)}
.service-icon svg{width:26px;height:26px;stroke:var(--primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.service-card h3{margin-bottom:var(--space-sm);color:var(--text)}
.service-card p{font-size:.875rem;color:var(--text-secondary);line-height:1.6}
.service-doctor{display:inline-flex;align-items:center;gap:6px;margin-top:var(--space-md);font-size:.78rem;font-weight:600;color:var(--primary);background:var(--primary-bg);padding:4px 12px;border-radius:var(--radius-full)}

/* Expanded service cards (OBG) */
.service-card--expanded{grid-column:span 1}
.sub-services{margin-top:var(--space-md);padding-top:var(--space-md);border-top:1px solid var(--border)}
.sub-services-group{margin-bottom:var(--space-md)}
.sub-services-group:last-child{margin-bottom:0}
.sub-services-group h4{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--primary);margin-bottom:var(--space-xs)}
.sub-services-list{list-style:none;padding:0;margin:0}
.sub-services-list li{position:relative;padding-left:18px;font-size:.82rem;color:var(--text-secondary);line-height:1.9}
.sub-services-list li::before{content:'';position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--teal-400);opacity:.7}
.service-timing{display:inline-flex;align-items:center;gap:6px;margin-top:var(--space-md);font-size:.8rem;font-weight:600;color:var(--primary);background:linear-gradient(135deg,rgba(0,155,155,.08),rgba(0,155,155,.15));padding:6px 14px;border-radius:var(--radius-md);border:1px solid rgba(0,155,155,.2)}
.service-timing svg{stroke:var(--primary);flex-shrink:0}
[data-theme="dark"] .service-timing{background:linear-gradient(135deg,rgba(0,155,155,.12),rgba(0,155,155,.2));border-color:rgba(0,155,155,.3)}
@media(min-width:640px){.service-card--expanded{grid-column:span 2}}

/* ===== DOCTOR SPOTLIGHT ===== */
.spotlight{background:linear-gradient(135deg,var(--teal-600),var(--teal-800));padding:0;overflow:hidden}
.spotlight-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr;min-height:400px}
@media(min-width:768px){.spotlight-inner{grid-template-columns:auto 1fr}}
.spotlight-image{position:relative;overflow:hidden;max-height:420px}
@media(min-width:768px){.spotlight-image{max-height:none;width:360px}}
.spotlight-image img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.spotlight-image::after{content:'';position:absolute;inset:0;background:linear-gradient(to bottom,transparent 60%,rgba(0,77,77,.4))}
@media(min-width:768px){.spotlight-image::after{background:linear-gradient(to right,transparent 60%,rgba(0,77,77,.3))}}
.spotlight-content{padding:var(--space-2xl) var(--space-lg);display:flex;flex-direction:column;justify-content:center;color:#fff}
.spotlight-badge{display:inline-block;width:fit-content;background:rgba(255,255,255,.15);backdrop-filter:blur(8px);color:#fff;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:6px 16px;border-radius:var(--radius-full);margin-bottom:var(--space-md)}
.spotlight h2{color:#fff;font-size:clamp(1.5rem,3vw,2rem);margin-bottom:var(--space-md);line-height:1.2}
.spotlight p{color:rgba(255,255,255,.85);font-size:.95rem;line-height:1.7;margin-bottom:var(--space-xl);max-width:520px}
.spotlight-stats{display:flex;gap:var(--space-2xl);margin-bottom:var(--space-xl)}
.spotlight-stat-number{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-size:1.8rem;font-weight:800;color:#fff;line-height:1}
.spotlight-stat-label{font-size:.78rem;color:rgba(255,255,255,.7);margin-top:4px;font-weight:500}
.spotlight .btn-primary{width:fit-content;background:#fff;color:var(--teal-700);border:none;font-weight:700}
.spotlight .btn-primary:hover{background:rgba(255,255,255,.9);transform:translateY(-2px)}
.lang-ta .spotlight h2{font-family:'Noto Sans Tamil','Plus Jakarta Sans',sans-serif}
.lang-ta .spotlight-stat-number{font-family:'Noto Sans Tamil','Plus Jakarta Sans',sans-serif}

/* ===== STATS ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-lg)}
.stat-card{text-align:center;padding:var(--space-xl) var(--space-md)}
.stat-number{font-family:'Plus Jakarta Sans',sans-serif;font-size:clamp(2rem,4vw,2.8rem);font-weight:800;color:var(--primary);line-height:1}
.stat-label{font-size:.85rem;color:var(--text-secondary);margin-top:var(--space-sm)}

/* ===== DOCTORS ===== */
.doctors-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-xl)}
.doctor-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-xl);display:flex;align-items:flex-start;gap:var(--space-xl);transition:all var(--dur) var(--ease)}
.doctor-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.doctor-avatar{width:110px;height:110px;border-radius:var(--radius-xl);background:linear-gradient(135deg,var(--teal-100),var(--teal-200));display:grid;place-items:center;flex-shrink:0}
[data-theme="dark"] .doctor-avatar{background:linear-gradient(135deg,var(--teal-800),var(--teal-700))}
.doctor-avatar svg{width:50px;height:50px;stroke:var(--primary);fill:none;stroke-width:1.5}
.doctor-avatar--photo{background:none;overflow:hidden}
.doctor-avatar--photo img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-xl)}
.doctor-info h3{font-size:1.2rem;margin-bottom:4px}
.doctor-title{color:var(--primary);font-weight:600;font-size:.88rem;margin-bottom:var(--space-sm)}
.doctor-creds{font-size:.8rem;color:var(--text-muted);margin-bottom:var(--space-md)}
.doctor-desc{font-size:.875rem;color:var(--text-secondary);line-height:1.65;margin-bottom:var(--space-md)}
.btn-sm{padding:8px 20px;font-size:.85rem;border-radius:var(--radius-full);font-weight:600}

/* ===== APPOINTMENT ===== */
.appt-section{background:linear-gradient(135deg,var(--teal-600),var(--teal-700));color:#fff;position:relative;overflow:hidden}
.appt-section::before{content:'';position:absolute;top:-100px;right:-100px;width:350px;height:350px;border-radius:50%;background:rgba(255,255,255,.05)}
.appt-inner{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-2xl);align-items:center}
.appt-text h2{color:#fff;margin-bottom:var(--space-md)}
.appt-text p{color:rgba(255,255,255,.85);margin-bottom:var(--space-lg);max-width:400px}
.appt-form{background:var(--surface);border-radius:var(--radius-xl);padding:var(--space-xl);box-shadow:var(--shadow-xl)}
.form-group{margin-bottom:var(--space-md)}
.form-group label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.06em}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius-md);background:var(--bg);color:var(--text);transition:border-color var(--dur) var(--ease)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-bg)}
.form-group textarea{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-md)}
.btn-submit{width:100%;padding:14px;background:var(--primary);color:#fff;border-radius:var(--radius-md);font-weight:700;font-size:1rem;letter-spacing:.02em;transition:all var(--dur) var(--ease);display:flex;align-items:center;justify-content:center;gap:8px;margin-top:var(--space-sm)}
.btn-submit:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}

/* ===== TESTIMONIALS ===== */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg)}
.testimonial-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-xl)}
.testimonial-stars{color:#f59e0b;font-size:1rem;margin-bottom:var(--space-md);letter-spacing:2px}
.testimonial-text{font-size:.9rem;color:var(--text-secondary);line-height:1.7;margin-bottom:var(--space-md);font-style:italic}
.testimonial-author{font-weight:600;font-size:.85rem;color:var(--text)}

/* ===== FOOTER ===== */
.footer{background:var(--gray-900);color:var(--gray-300);padding:var(--space-2xl) var(--space-lg) var(--space-lg)}
.footer-inner{max-width:1200px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--space-xl);margin-bottom:var(--space-xl)}
.footer-brand .logo-name{color:var(--teal-400)}
.footer-brand p{font-size:.85rem;line-height:1.7;margin-top:var(--space-md);color:var(--gray-400)}
.footer h4{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:var(--space-md)}
.footer a{font-size:.85rem;color:var(--gray-400);transition:color var(--dur) var(--ease);display:block;padding:4px 0}
.footer a:hover{color:var(--teal-300)}
.footer-bottom{border-top:1px solid var(--gray-800);padding-top:var(--space-lg);display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--gray-500)}
.footer-bottom a{display:inline;padding:0;color:var(--teal-400)}
.footer-bottom a:hover{color:var(--teal-300)}

/* ===== CHATBOT ===== */
.chat-fab{position:fixed;bottom:24px;right:24px;width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--teal-500),var(--teal-600));color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-xl);z-index:200;transition:all var(--dur) var(--ease)}
.chat-fab:hover{transform:scale(1.08);box-shadow:0 8px 36px rgba(0,155,155,.4)}
.chat-fab svg{width:28px;height:28px;fill:#fff}

.chat-window{position:fixed;bottom:96px;right:24px;width:380px;max-height:540px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);z-index:200;display:none;flex-direction:column;overflow:hidden;animation:chatSlide .3s var(--ease)}
.chat-window.open{display:flex}
@keyframes chatSlide{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

.chat-header{background:linear-gradient(135deg,var(--teal-600),var(--teal-500));color:#fff;padding:var(--space-md) var(--space-lg);display:flex;align-items:center;justify-content:space-between}
.chat-header h4{font-size:.95rem;font-weight:700}
.chat-close{color:#fff;opacity:.7;transition:opacity var(--dur) var(--ease);background:none;border:none;cursor:pointer}
.chat-close:hover{opacity:1}

.chat-body{flex:1;padding:var(--space-lg);overflow-y:auto;display:flex;flex-direction:column;gap:var(--space-md)}
.chat-msg{font-size:.88rem;line-height:1.6;padding:12px 16px;border-radius:var(--radius-lg);max-width:90%}
.chat-msg.bot{background:var(--primary-bg);color:var(--text);border-bottom-left-radius:4px}
.chat-options{display:flex;flex-direction:column;gap:8px}
.chat-opt{padding:10px 16px;border:1.5px solid var(--border);border-radius:var(--radius-md);font-size:.85rem;font-weight:500;color:var(--text);text-align:left;background:var(--surface);transition:all var(--dur) var(--ease);cursor:pointer}
.chat-opt:hover{border-color:var(--primary);background:var(--primary-bg);color:var(--primary)}
.chat-actions{display:flex;flex-direction:column;gap:8px;margin-top:var(--space-sm)}
.chat-action{display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--radius-md);font-size:.85rem;font-weight:600;transition:all var(--dur) var(--ease)}
.chat-action.book{background:var(--primary);color:#fff}
.chat-action.book:hover{background:var(--primary-dark)}
.chat-action.call{background:var(--bg-alt);color:var(--text)}
.chat-action.call:hover{background:var(--border)}
.chat-action.wa{background:#25d366;color:#fff}
.chat-action.wa:hover{background:#1fb855}

/* ===== MOBILE NAV ===== */
.mobile-nav{display:none;position:fixed;inset:0;z-index:150;background:var(--surface);padding:var(--space-3xl) var(--space-lg);flex-direction:column;gap:var(--space-lg)}
.mobile-nav.open{display:flex}
.mobile-nav a{font-size:1.3rem;font-weight:600;color:var(--text);padding:var(--space-sm) 0;border-bottom:1px solid var(--border)}
.mobile-nav-close{position:absolute;top:var(--space-lg);right:var(--space-lg);width:40px;height:40px;display:grid;place-items:center;border-radius:var(--radius-sm);background:var(--bg-alt);color:var(--text)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .doctors-grid{grid-template-columns:1fr}
  .appt-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav{display:none}
  .mobile-menu-btn{display:grid}
  .hero{padding:var(--space-2xl) var(--space-md)}
  .hero-features{grid-template-columns:1fr}
  .section{padding:var(--space-2xl) var(--space-md)}
  .testimonials-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:var(--space-sm);text-align:center}
  .form-row{grid-template-columns:1fr}
  .chat-window{right:12px;left:12px;width:auto;bottom:88px}
  .doctor-card{flex-direction:column;align-items:center;text-align:center}
}