/* ============================
   Serenity waterFront — style.css
   Mobile-first responsive
   ============================ */

/* CSS variables */
:root{
  --bg: #fffdfa;
  --muted: #6b6b6b;
  --accent: #ff7b5c;
  --accent-2: #ffd77a;
  --primary: #2b7a78;
  --card: #ffffff;
  --radius: 12px;
  --shadow: 0 6px 18px rgba(11,11,11,0.08);
  --max-width: 1100px;
  --container-padding: 16px;
  --ease: cubic-bezier(.2,.9,.3,1);
}

/* Reset & helpers */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:#222;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
  font-size:16px;
}
.container{max-width:var(--max-width);margin:0 auto;padding:26px var(--container-padding)}
.sr-only{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}

/* Header */
.site-header{background:linear-gradient(90deg,var(--accent-2), #fff);position:sticky;top:0;z-index:1000;box-shadow:0 1px 0 rgba(0,0,0,0.06)}
.header-inner{display:flex;align-items:center;gap:12px;justify-content:space-between}
.brand{display:flex;flex-direction:column}
.logo{font-weight:700;font-size:1.05rem;text-decoration:none;color:var(--primary)}
.tagline{font-size:0.76rem;color:var(--muted)}
.nav-toggle{background:transparent;border:0;padding:8px;display:flex;align-items:center;cursor:pointer}
.hamburger{width:26px;height:2px;background:#333;display:inline-block;position:relative}
.hamburger::before,.hamburger::after{content:"";position:absolute;left:0;width:26px;height:2px;background:#333;transition:transform .2s var(--ease)}
.hamburger::before{top:-8px}
.hamburger::after{top:8px}
.main-nav ul{list-style:none;padding:0;margin:0;display:flex;gap:20px}
.main-nav a{text-decoration:none;color:#222;padding:8px 6px;border-radius:8px}
.main-nav a:hover{background:rgba(0,0,0,0.03)}

/* Header actions */
.header-actions{display:flex;align-items:center;gap:10px}

/* Buttons */
.btn{display:inline-block;padding:10px 16px;border-radius:999px;border:0;cursor:pointer;font-weight:600}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow)}
.btn-secondary{background:transparent;border:1px solid var(--primary);color:var(--primary)}

/* Hero */
.hero{padding:36px 0}
.hero-inner{display:grid;grid-template-columns:1fr;gap:20px;align-items:center}
.hero-copy h1{font-size:1.6rem;margin:0 0 8px}
.lead{color:var(--muted);margin-bottom:14px}
.hero-image img{width:100%;border-radius:14px;box-shadow:var(--shadow)}

/* Sections */
.section{padding:34px 0}
.section h2{text-align:center;color:var(--accent);margin-bottom:18px}
.pale{background:linear-gradient(180deg,#fff, #fffbf6)}

/* About */
.about-grid{display:grid;gap:16px}
.features{list-style:disc;margin-left:20px;color:var(--muted)}

/* Cards grid */
.cards-grid{display:grid;grid-template-columns:1fr;gap:12px}
.card{background:var(--card);padding:16px;border-radius:12px;box-shadow:var(--shadow)}

/* Teachers */
.teacher-grid{display:grid;grid-template-columns:1fr;gap:12px}
.teacher{background:#fff;padding:12px;border-radius:12px;text-align:center;box-shadow:var(--shadow)}
.teacher img{width:100%;height:180px;object-fit:cover;border-radius:10px;margin-bottom:8px}

/* Testimonials */
.testimonials{position:relative;display:grid;place-items:center}
.testimonial{display:none;max-width:700px;padding:18px;background:linear-gradient(180deg,#fff,#fff);border-radius:12px;box-shadow:var(--shadow)}
.testimonial.active{display:block}
.test-controls{margin-top:10px;display:flex;gap:8px;justify-content:center}
.test-controls button{background:transparent;border:1px solid #ddd;padding:6px 10px;border-radius:8px}

/* Gallery */
.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.gallery-item{padding:0;border:0;background:transparent}
.gallery-item img{width:100%;height:150px;object-fit:cover;border-radius:10px;box-shadow:var(--shadow)}

/* FAQ */
.faq-grid{display:grid;gap:10px}
details summary{cursor:pointer;padding:10px;border-radius:8px;background:#fff;border:1px solid #f0ece6}
details p{padding:10px}

/* Contact */
.contact-grid{display:grid;gap:18px}
.contact-info{padding:12px}
.map-placeholder{background:#efe8df;height:140px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.contact-form{display:flex;flex-direction:column;gap:8px}
.contact-form label span{display:block;margin-bottom:6px;color:var(--muted)}
.contact-form input,.contact-form textarea{padding:10px;border-radius:8px;border:1px solid #e0ddd9}

/* Footer */
.site-footer{background:linear-gradient(90deg,#fff, #fff);padding:18px 0;border-top:1px solid #f4f1ec}
.footer-inner{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.footer-links{list-style:none;display:flex;gap:12px;margin:0;padding:0}
.footer-links a{text-decoration:none;color:var(--muted)}

/* Modal */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,0.5);padding:20px;z-index:2000}
.modal[aria-hidden="false"]{display:flex}
.modal-content{background:#fff;padding:18px;border-radius:12px;max-width:520px;width:100%;position:relative;box-shadow:var(--shadow)}
.modal-close{position:absolute;right:10px;top:10px;border:0;background:transparent;font-size:1.6rem;cursor:pointer}
.enroll-form{display:flex;flex-direction:column;gap:10px}
.enroll-msg{margin-top:12px;color:var(--primary);font-weight:600}

/* Lightbox */
.lightbox{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,0.85);z-index:2200;padding:20px}
.lightbox[aria-hidden="false"]{display:flex}
.lightbox img{max-width:95%;max-height:85vh;border-radius:8px}
.lightbox-close{position:absolute;top:18px;right:22px;background:transparent;border:0;color:#fff;font-size:2rem;cursor:pointer}

/* Utilities */
.text-center{text-align:center}
.form-actions{display:flex;gap:8px;justify-content:flex-end}

/* Responsive layout tweaks */
@media(min-width:768px){
  .hero-inner{grid-template-columns:1fr 420px;gap:32px}
  .main-nav ul{gap:18px}
  .cards-grid{grid-template-columns:repeat(3,1fr)}
  .teacher-grid{grid-template-columns:repeat(3,1fr)}
  .gallery-grid{grid-template-columns:repeat(4,1fr)}
  .contact-grid{grid-template-columns:1fr 1fr}
  .about-grid{grid-template-columns:1fr 360px}
}

/* Desktop nav visible, mobile hidden */
@media(max-width:767px){
  .main-nav{position:absolute;top:72px;right:16px;background:var(--accent-2);padding:12px;border-radius:12px;display:none}
  .main-nav[aria-hidden="false"]{display:block}
  .main-nav ul{flex-direction:column;gap:8px}
}

/* small accessibility focus styles */
a:focus,button:focus,input:focus,textarea:focus{outline:3px solid rgba(43,122,120,0.14);outline-offset:2px}