/* ============================================
   VIKAS SANDHIR CLINIC — Design System
   ============================================ */

/* --- CSS Variables --- */
:root {
  --primary: #0F4C81;
  --primary-dark: #0a3660;
  --secondary: #EAF4FF;
  --accent: #22C55E;
  --accent-dark: #16a34a;
  --bg: #FFFFFF;
  --dark: #1A1A1A;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --glass: rgba(255,255,255,0.08);
  --glass-border: rgba(255,255,255,0.15);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(15,76,129,0.10);
  --shadow-lg: 0 10px 40px rgba(15,76,129,0.15);
  --shadow-glow: 0 0 30px rgba(15,76,129,0.2);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-full: 9999px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.6s cubic-bezier(0.4,0,0.2,1);
}

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden}
body{font-family:'Inter',sans-serif;color:var(--dark);background:var(--bg);line-height:1.7;overflow-x:hidden;width:100%}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button{cursor:pointer;border:none;background:none;font-family:inherit}
ul{list-style:none}
h1,h2,h3,h4,h5,h6{font-family:'Poppins',sans-serif;font-weight:700;line-height:1.2}

/* --- Utility --- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:100px 0}
.section-label{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:var(--primary);background:var(--secondary);padding:8px 20px;border-radius:var(--radius-full);margin-bottom:16px}
.section-label i{font-size:11px}
.section-title{font-size:clamp(24px,5vw,44px);color:var(--dark);margin-bottom:16px}
.section-title span{color:var(--primary)}
.section-subtitle{font-size:17px;color:var(--gray-500);max-width:600px}
.section-header{text-align:center;margin-bottom:60px}
.section-header .section-subtitle{margin:0 auto}
.text-gradient{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.reveal{opacity:0;transform:translateY(40px)}
.gallery-item.reveal{transform:translateY(20px) scale(0.95)}

/* --- Buttons --- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border-radius:var(--radius-full);font-size:15px;font-weight:600;transition:var(--transition);position:relative;overflow:hidden}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 15px rgba(15,76,129,0.3)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-glow)}
.btn-outline{border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 15px rgba(34,197,94,0.3)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn i{font-size:14px;transition:var(--transition)}
.btn:hover i{transform:translateX(3px)}

/* ============================================
   NAVBAR
   ============================================ */
.navbar{position:fixed;top:0;left:0;width:100%;z-index:1000;padding:16px 0;transition:var(--transition)}
.navbar.scrolled{background:rgba(255,255,255,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:10px 0;box-shadow:var(--shadow-sm)}
.navbar .container{display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:12px;font-family:'Poppins',sans-serif;font-weight:700;font-size:20px;color:var(--primary)}
.nav-logo img{width:42px;height:42px;border-radius:10px}
.nav-logo span{font-size:12px;font-weight:400;color:var(--gray-500);display:block;margin-top:-4px}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:14px;font-weight:500;color:var(--gray-600);transition:var(--transition);position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--primary);transition:var(--transition);border-radius:2px}
.nav-links a:hover{color:var(--primary)}
.nav-links a:hover::after{width:100%}
.nav-cta .btn{padding:10px 24px;font-size:14px}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--dark);border-radius:2px;transition:var(--transition)}

/* Mobile Nav */
@media(max-width:968px){
  .nav-links,.nav-cta{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:#fff;flex-direction:column;align-items:flex-start;padding:80px 30px 30px;gap:24px;transition:var(--transition-slow);box-shadow:-10px 0 40px rgba(0,0,0,0.1);z-index:999}
  .nav-links.open,.nav-cta.open{right:0}
  .nav-toggle{display:flex;z-index:1001}
  .nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
  .nav-cta{top:auto;bottom:0;height:auto;width:280px;padding:20px 30px}
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:80px;overflow:hidden;background:linear-gradient(135deg,var(--secondary) 0%,#fff 50%,#f0fdf4 100%)}
.hero-bg-canvas{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-content{max-width:560px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(15,76,129,0.08);border:1px solid rgba(15,76,129,0.15);padding:8px 18px;border-radius:var(--radius-full);font-size:13px;font-weight:600;color:var(--primary);margin-bottom:24px}
.hero-badge i{font-size:10px}
.hero-title{font-size:clamp(28px,6vw,48px);margin-bottom:20px;color:var(--dark)}
.hero-title .highlight{color:var(--primary);position:relative}
.hero-title .highlight::after{content:'';position:absolute;bottom:4px;left:0;width:100%;height:8px;background:rgba(15,76,129,0.12);border-radius:4px;z-index:-1}
.hero-desc{font-size:17px;color:var(--gray-500);margin-bottom:32px;line-height:1.8}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;margin-top:40px;padding-top:32px;border-top:1px solid var(--gray-200)}
.hero-stat{text-align:center}
.hero-stat-num{font-family:'Poppins',sans-serif;font-size:32px;font-weight:700;color:var(--primary)}
.hero-stat-label{font-size:13px;color:var(--gray-500);margin-top:4px}

/* Hero Image */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.hero-img-wrapper{position:relative;width:420px;height:500px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.hero-img-wrapper img{width:100%;height:100%;object-fit:cover}
.hero-float-card{position:absolute;background:#fff;border-radius:var(--radius-sm);padding:14px 20px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:12px;z-index:3;animation:floatCard 4s ease-in-out infinite}
.hero-float-card.card-1{top:60px;left:-40px;animation-delay:0s}
.hero-float-card.card-2{bottom:80px;right:-30px;animation-delay:1.5s}
.hero-float-card .icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff}
.hero-float-card .icon.blue{background:var(--primary)}
.hero-float-card .icon.green{background:var(--accent)}
.hero-float-card .info h4{font-size:14px;font-weight:600;color:var(--dark)}
.hero-float-card .info p{font-size:12px;color:var(--gray-500)}

@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

@media(max-width:968px){
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-content{max-width:100%}
  .hero-buttons{justify-content:center}
  .hero-stats{justify-content:center}
  .hero-visual{margin-top:40px}
  .hero-img-wrapper{width:100%;max-width:420px;height:auto}
  .hero-float-card { padding: 8px 12px; gap: 8px; border-radius: 6px; }
  .hero-float-card .icon { width: 28px; height: 28px; font-size: 13px; border-radius: 6px; }
  .hero-float-card .info h4 { font-size: 11px; }
  .hero-float-card .info p { font-size: 9px; line-height: 1.2; }
  .hero-float-card.card-1 { top: auto; bottom: 110px; left: -15px; }
  .hero-float-card.card-2 { bottom: 25px; right: -15px; }
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats{padding:60px 0;background:var(--primary);position:relative;overflow:hidden}
.stats::before{content:'';position:absolute;top:-60px;left:-60px;width:200px;height:200px;background:rgba(255,255,255,0.05);border-radius:50%}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.stat-card{text-align:center;padding:30px 20px;border-radius:var(--radius);background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);transition:var(--transition)}
.stat-card:hover{background:rgba(255,255,255,0.1);transform:translateY(-4px)}
.stat-card i{font-size:28px;color:var(--accent);margin-bottom:12px}
.stat-card .number{font-family:'Poppins',sans-serif;font-size:36px;font-weight:700;color:#fff}
.stat-card .label{font-size:14px;color:rgba(255,255,255,0.7);margin-top:4px}

@media(max-width:768px){.stats .container{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.stats .container{grid-template-columns:1fr}}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-img{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.about-img img{width:100%;height:400px;object-fit:cover}
.about-img .exp-badge{position:absolute;bottom:20px;right:20px;background:var(--primary);color:#fff;padding:16px 24px;border-radius:var(--radius-sm);text-align:center}
.about-img .exp-badge .num{font-family:'Poppins',sans-serif;font-size:32px;font-weight:700}
.about-img .exp-badge .txt{font-size:12px;opacity:0.9}
.about-content .section-subtitle{max-width:100%;margin-bottom:24px}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.about-feature{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--secondary);border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--dark)}
.about-feature i{color:var(--accent);font-size:16px}

@media(max-width:768px){
  .about .container{grid-template-columns:1fr}
  .about-features{grid-template-columns:1fr}
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services{background:var(--gray-50)}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:#fff;border-radius:var(--radius);padding:36px 28px;border:1px solid var(--gray-200);transition:var(--transition);position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transition:var(--transition);transform-origin:left}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{width:56px;height:56px;border-radius:14px;background:var(--secondary);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary);margin-bottom:20px;transition:var(--transition)}
.service-card:hover .service-icon{background:var(--primary);color:#fff;transform:scale(1.05)}
.service-card h3{font-size:18px;margin-bottom:10px;color:var(--dark)}
.service-card p{font-size:14px;color:var(--gray-500);line-height:1.7}

@media(max-width:768px){.services-grid{grid-template-columns:1fr}}

/* ============================================
   WHY CHOOSE US
   ============================================ */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.why-card{text-align:center;padding:40px 28px;border-radius:var(--radius);background:var(--secondary);border:1px solid transparent;transition:var(--transition)}
.why-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.why-card .icon{width:64px;height:64px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;margin:0 auto 20px;transition:var(--transition)}
.why-card:hover .icon{transform:scale(1.1);box-shadow:var(--shadow-glow)}
.why-card h3{font-size:18px;margin-bottom:10px}
.why-card p{font-size:14px;color:var(--gray-500)}

@media(max-width:768px){.why-grid{grid-template-columns:1fr}}

/* ============================================
   REVIEWS SECTION
   ============================================ */
.reviews{background:var(--gray-50)}
.reviews-slider{overflow-x:hidden;padding-bottom:20px}
.reviews-track{display:flex;gap:24px;width:max-content;animation:scrollReviews 30s linear infinite}
.reviews-track:hover{animation-play-state:paused}
@keyframes scrollReviews{
  0%{transform:translateX(0)}
  100%{transform:translateX(calc(-50% - 12px))}
}
.review-card{width:360px;background:#fff;border-radius:var(--radius);padding:32px;border:1px solid var(--gray-200);transition:var(--transition)}
.review-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary)}
.review-header{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.review-avatar{width:48px;height:48px;border-radius:50%;object-fit:cover;border:2px solid var(--secondary)}
.review-name{font-weight:600;font-size:15px}
.review-date{font-size:12px;color:var(--gray-400)}
.review-stars{color:#f59e0b;font-size:14px;margin-bottom:12px}
.review-text{font-size:14px;color:var(--gray-600);line-height:1.7}
.review-google{display:flex;align-items:center;gap:6px;margin-top:14px;font-size:12px;color:var(--gray-400)}
.review-google i{color:#4285f4}

@media(max-width:480px){.review-card{width:300px}}

/* ============================================
   GALLERY SECTION
   ============================================ */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery-item{position:relative;border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:1;cursor:pointer}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.gallery-item:hover img{transform:scale(1.08)}
.gallery-item .overlay{position:absolute;inset:0;background:rgba(15,76,129,0.5);display:flex;align-items:center;justify-content:center;opacity:0;transition:var(--transition)}
.gallery-item:hover .overlay{opacity:1}
.gallery-item .overlay i{font-size:28px;color:#fff}

@media(max-width:768px){.gallery-grid{grid-template-columns:repeat(2,1fr)}}

/* ============================================
   APPOINTMENT SECTION
   ============================================ */
.appointment{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;position:relative;overflow:hidden}
.appointment::before{content:'';position:absolute;top:-100px;right:-100px;width:300px;height:300px;background:rgba(255,255,255,0.03);border-radius:50%}
.appointment .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.appt-info h2{font-size:clamp(28px,4vw,40px);margin-bottom:16px}
.appt-info p{font-size:16px;opacity:0.85;margin-bottom:24px;line-height:1.8}
.appt-info-list{display:flex;flex-direction:column;gap:14px}
.appt-info-item{display:flex;align-items:center;gap:12px;font-size:15px}
.appt-info-item i{width:36px;height:36px;background:rgba(255,255,255,0.12);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px}
.appt-form{background:#fff;border-radius:var(--radius);padding:40px;color:var(--dark)}
.appt-form h3{font-size:22px;margin-bottom:24px;text-align:center;color:var(--primary)}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--gray-600);margin-bottom:6px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:13px 16px;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);font-size:14px;font-family:'Inter',sans-serif;transition:var(--transition);background:var(--gray-50)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(15,76,129,0.08)}
.form-group textarea{resize:vertical;min-height:100px}
.appt-form .btn{width:100%;justify-content:center;padding:16px}
.form-success{display:none;text-align:center;padding:40px 20px}
.form-success i{font-size:48px;color:var(--accent);margin-bottom:16px}
.form-success h4{font-size:20px;margin-bottom:8px}
.form-success p{font-size:14px;color:var(--gray-500)}

@media(max-width:768px){.appointment .container{grid-template-columns:1fr}}

/* ============================================
   MAP SECTION
   ============================================ */
.map-section{padding:0}
.map-wrapper{position:relative;height:400px;border-radius:0}
.map-wrapper iframe{width:100%;height:100%;border:0}
.map-overlay{position:absolute;bottom:30px;left:30px;background:#fff;border-radius:var(--radius);padding:24px 28px;box-shadow:var(--shadow-lg);max-width:320px}
.map-overlay h3{font-size:16px;margin-bottom:8px;color:var(--primary)}
.map-overlay p{font-size:13px;color:var(--gray-500);margin-bottom:14px;line-height:1.6}

@media(max-width:480px){.map-overlay{left:10px;right:10px;bottom:10px;max-width:100%}}

/* ============================================
   FOOTER
   ============================================ */
.footer{background:var(--dark);color:rgba(255,255,255,0.7);padding:80px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;margin-bottom:60px}
.footer-brand h3{font-family:'Poppins',sans-serif;font-size:22px;color:#fff;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.7;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;transition:var(--transition)}
.footer-social a:hover{background:var(--primary);transform:translateY(-3px)}
.footer h4{font-family:'Poppins',sans-serif;font-size:16px;color:#fff;margin-bottom:20px}
.footer-links a{display:block;font-size:14px;padding:6px 0;transition:var(--transition)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;font-size:14px}
.footer-contact-item i{color:var(--accent);margin-top:3px;font-size:16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:24px 0;text-align:center;font-size:13px}

@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){.footer-grid{grid-template-columns:1fr}}

/* ============================================
   FLOATING CTA (Mobile)
   ============================================ */
.floating-cta{position:fixed;bottom:20px;right:20px;z-index:900;display:flex;flex-direction:column;gap:10px}
.floating-btn{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;box-shadow:var(--shadow-md);transition:var(--transition);animation:floatCard 3s ease-in-out infinite}
.floating-btn:hover{transform:scale(1.1)}
.floating-btn.whatsapp{background:#25D366}
.floating-btn.call{background:var(--primary);animation-delay:1s}

/* ============================================
   LOADING SCREEN
   ============================================ */
.loader{position:fixed;inset:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:9999;transition:opacity 0.5s}
.loader.hidden{opacity:0;pointer-events:none}
.loader-content{text-align:center}
.loader-spinner{width:48px;height:48px;border:3px solid var(--gray-200);border-top-color:var(--primary);border-radius:50%;animation:spin 0.8s linear infinite;margin:0 auto 16px}
@keyframes spin{to{transform:rotate(360deg)}}
.loader-content p{font-family:'Poppins',sans-serif;font-size:14px;color:var(--gray-500)}

/* ============================================
   SCROLL TO TOP
   ============================================ */
.scroll-top{position:fixed;bottom:90px;right:26px;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:var(--transition);z-index:800;cursor:pointer}
.scroll-top.visible{opacity:1;visibility:visible}
.scroll-top:hover{background:var(--primary-dark);transform:translateY(-3px)}

/* ============================================
   LIGHTBOX
   ============================================ */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,0.9);z-index:9998;display:none;align-items:center;justify-content:center}
.lightbox.active{display:flex}
.lightbox img{max-width:90%;max-height:85vh;border-radius:var(--radius-sm);object-fit:contain}
.lightbox-close{position:absolute;top:20px;right:30px;font-size:32px;color:#fff;cursor:pointer}