/* ============================================================
   SIBS — Stylesheet utama (laman awam)
   Skema: Navy #1A2A6C  +  Aquamarine #00B4D8
   Mobile-first, Flexbox & CSS Grid
   ============================================================ */

:root{
  --navy:#1A2A6C;
  --navy-dark:#13205a;
  --aqua:#00B4D8;
  --aqua-dark:#0096b8;
  --nav-active:#00B4D8;   /* warna asal (aquamarine) untuk item nav aktif */
  --bg:#f5f7fb;
  --text:#2b2f38;
  --muted:#6b7280;
  --white:#ffffff;
  --green:#16a34a;
  --orange:#ea8c00;
  --red:#dc2626;
  --blue:#2563eb;
  --radius:14px;
  --shadow:0 6px 24px rgba(26,42,108,.10);
  --shadow-lg:0 14px 40px rgba(26,42,108,.18);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
}
h1,h2,h3,h4{font-family:'Poppins',sans-serif;line-height:1.25;color:var(--navy)}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 18px}

/* ---------- Butang ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border:none;border-radius:50px;
  font-family:'Poppins',sans-serif;font-weight:600;font-size:.95rem;
  cursor:pointer;transition:.2s;text-align:center;
}
.btn-primary{background:var(--aqua);color:#fff}
.btn-primary:hover{background:var(--aqua-dark);transform:translateY(-2px)}
.btn-outline{background:transparent;border:2px solid #fff;color:#fff}
.btn-outline:hover{background:#fff;color:var(--navy)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-dark);transform:translateY(-2px)}
.btn-block{width:100%;justify-content:center}
.btn-sm{padding:8px 16px;font-size:.85rem}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:#fff;box-shadow:0 2px 14px rgba(0,0,0,.08);
}
.header-spacer{height:72px}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo-icon{
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--navy),var(--aqua));
  color:#fff;display:grid;place-items:center;font-size:1.2rem;
}
.logo-text strong{display:block;font-family:'Poppins';font-size:1.05rem;color:var(--navy);line-height:1}
.logo-text small{color:var(--muted);font-size:.64rem}

/* Nav gaya minimalis: huruf besar, jarak huruf lebar, garis bawah aktif oren */
.main-nav{display:flex;align-items:center;gap:24px}
.main-nav a:not(.btn-login){
  position:relative;
  font-family:'Poppins',sans-serif;
  font-weight:600;
  color:#8a8f99;                 /* kelabu untuk item tidak aktif */
  font-size:.76rem;
  letter-spacing:.8px;            /* jarak huruf */
  text-transform:uppercase;
  white-space:nowrap;             /* elak teks pecah ke dua baris */
  padding:6px 0;
  transition:.2s;
}
.main-nav a:not(.btn-login):hover{color:var(--nav-active)}
/* Item aktif: teks oren + garis bawah pendek oren */
.main-nav a.active{color:var(--nav-active)}
.main-nav a.active::after{
  content:"";position:absolute;left:0;bottom:-6px;
  width:34px;height:3px;border-radius:3px;background:var(--nav-active);
}
/* Butang kecil Admin */
.main-nav .btn-login{
  background:var(--navy);color:#fff;padding:7px 14px;border-radius:50px;
  font-size:.7rem;font-weight:600;letter-spacing:.4px;text-transform:uppercase;
}
.main-nav .btn-login:hover{background:var(--nav-active);color:#fff}
.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--navy);cursor:pointer}

/* ---------- Dropdown Instruments ---------- */
.nav-dropdown{position:relative;display:inline-flex;align-items:center}
.dropdown-toggle{cursor:pointer}
.caret{font-size:.62rem;margin-left:5px;transition:transform .25s}
.nav-dropdown.open .caret{transform:rotate(180deg)}
.dropdown-menu{
  position:absolute;top:calc(100% + 16px);left:50%;
  transform:translateX(-50%) translateY(10px);
  background:#fff;min-width:270px;max-height:72vh;overflow-y:auto;
  border-radius:12px;box-shadow:0 16px 40px rgba(26,42,108,.20);
  padding:8px 0;opacity:0;visibility:hidden;transition:opacity .2s,transform .2s,visibility .2s;
  z-index:1200;
}
.nav-dropdown.open .dropdown-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
/* Item dalam dropdown — atasi gaya huruf-besar nav biasa */
.main-nav .dropdown-menu a{
  display:block;padding:11px 22px;color:var(--navy);
  font-family:'Inter',sans-serif;font-size:.9rem;font-weight:500;
  letter-spacing:normal;text-transform:none;
}
.main-nav .dropdown-menu a:hover{background:var(--bg);color:var(--aqua)}
.main-nav .dropdown-menu a.dd-all{
  color:var(--aqua);font-weight:600;border-bottom:1px solid #eef1f7;margin-bottom:4px;
}
.dropdown-menu .dd-empty{display:block;padding:11px 22px;color:var(--muted);font-size:.86rem}

/* ---------- Hero dengan slideshow latar (fade) ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  min-height:560px;display:flex;align-items:center;background:#14181f;
}
/* Lapisan gambar bertindih (fade in/out) */
.hero-slides{position:absolute;inset:0;z-index:0}
.hero-slide{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:0;transition:opacity 1.4s ease;
}
.hero-slide.is-active{opacity:1}
/* Overlay gelap sekata supaya teks jelas */
.hero-overlay{position:absolute;inset:0;z-index:1;background:rgba(12,18,30,.62)}
.hero .container{position:relative;z-index:2;width:100%}
/* Anak panah kawalan slaid */
.hero-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:46px;height:46px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,.18);color:#fff;font-size:1rem;display:grid;place-items:center;transition:.2s;
}
.hero-arrow:hover{background:rgba(255,255,255,.34)}
.hero-arrow.prev{left:18px}
.hero-arrow.next{right:18px}
/* Titik petunjuk */
.hero-dots{position:absolute;bottom:22px;left:0;right:0;z-index:3;display:flex;gap:10px;justify-content:center}
.hero-dot{width:11px;height:11px;border-radius:50%;border:none;cursor:pointer;padding:0;
  background:rgba(255,255,255,.45);transition:.2s}
.hero-dot.active{background:#fff;transform:scale(1.25)}
@media(max-width:600px){
  .hero-arrow{width:38px;height:38px}
  .hero-arrow.prev{left:8px} .hero-arrow.next{right:8px}
}
/* Blok teks di tengah */
.hero-content{max-width:760px;margin:0 auto;text-align:center}
.hero h1{color:#fff;font-size:2.5rem;font-weight:800;margin-bottom:14px;line-height:1.15}
.hero-content .lead{
  color:#fff;font-family:'Poppins',sans-serif;font-weight:700;
  font-size:1.7rem;line-height:1.3;margin-bottom:28px;
}
.hero-content .lead{margin-left:auto;margin-right:auto}
.hero p{font-size:1.05rem;margin-bottom:28px;opacity:.92}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
/* Butang oren 'Book Now' seperti rujukan */
.btn-orange{background:#F08A24;color:#fff}
.btn-orange:hover{background:#d9781a;transform:translateY(-2px)}

/* ---------- Statistik ---------- */
.stats{background:#fff;padding:50px 0;margin-top:-50px;position:relative;z-index:5}
.stats .container{
  background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:34px 20px;
}
.stat-item{text-align:center;padding:8px}
.stat-item .num{font-family:'Poppins';font-size:2.2rem;font-weight:800;color:var(--aqua)}
.stat-item .label{color:var(--muted);font-weight:500;font-size:.92rem}

/* ---------- Seksyen umum ---------- */
.section{padding:64px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 42px}
.section-head .eyebrow{color:var(--aqua);font-weight:600;text-transform:uppercase;letter-spacing:1px;font-size:.82rem}
.section-head h2{font-size:2rem;margin:8px 0 10px}
.section-head p{color:var(--muted)}
.bg-light{background:var(--bg)}

/* ---------- Grid Kategori ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat-card{
  background:#fff;border-radius:var(--radius);padding:28px 18px;text-align:center;
  box-shadow:var(--shadow);transition:.25s;border:1px solid #eef1f7;
}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.cat-card .ic{
  width:62px;height:62px;margin:0 auto 14px;border-radius:50%;
  background:linear-gradient(135deg,var(--navy),var(--aqua));
  color:#fff;display:grid;place-items:center;font-size:1.5rem;
}
.cat-card h4{font-size:1.02rem;margin-bottom:6px}
.cat-card p{font-size:.82rem;color:var(--muted)}
.cat-count{display:inline-block;margin-top:12px;background:var(--bg);color:var(--navy);
  font-size:.74rem;font-weight:600;padding:4px 12px;border-radius:50px}

/* ---------- Animasi fade-in semasa skrol ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}
/* Hormati pengguna yang matikan animasi */
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- Koleksi Instrumen Terkini: baris berselang-seli (gaya About Us) ---------- */
.feature-rows{display:flex;flex-direction:column;gap:34px;margin-top:30px}
.feature-row{
  display:flex;align-items:stretch;background:#fff;
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:.25s;min-height:300px;
}
.feature-row:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.feature-row.reverse{flex-direction:row-reverse}      /* tukar arah untuk baris genap */
.feature-img{flex:0 0 46%;position:relative;background:#eef1f7;overflow:hidden}
.feature-img img{width:100%;height:100%;min-height:300px;object-fit:cover;transition:.4s}
.feature-row:hover .feature-img img{transform:scale(1.04)}
.feature-img .badge{position:absolute;top:16px;left:16px}
.feature-text{flex:1;padding:34px 42px;display:flex;flex-direction:column;justify-content:center}
.feature-text h3{font-size:1.5rem;margin:6px 0 10px}
.feature-model{color:var(--muted);font-size:.9rem;margin-bottom:14px}
.feature-spec{color:var(--text);font-size:.96rem;line-height:1.65;margin-bottom:22px}
.feature-actions{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- Grid Instrumen / Card produk ---------- */
.instr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.instr-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:.25s;display:flex;flex-direction:column;
  border:1px solid #eef1f7;
}
.instr-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.instr-thumb{position:relative;height:200px;overflow:hidden;background:#eef1f7}
.instr-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.instr-card:hover .instr-thumb img{transform:scale(1.06)}
.instr-thumb .badge{position:absolute;top:12px;right:12px}
.instr-body{padding:18px;display:flex;flex-direction:column;flex:1}
.instr-cat{color:var(--aqua);font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.instr-body h3{font-size:1.1rem;margin:5px 0 6px}
.instr-model{color:var(--muted);font-size:.86rem;margin-bottom:14px}
.instr-actions{margin-top:auto;display:flex;gap:8px}

/* ---------- Badge ---------- */
.badge{
  display:inline-block;padding:5px 12px;border-radius:50px;
  font-size:.74rem;font-weight:600;color:#fff;
}
.badge-green{background:var(--green)}
.badge-orange{background:var(--orange)}
.badge-red{background:var(--red)}
.badge-blue{background:var(--blue)}
.badge-grey{background:#9ca3af}

/* ---------- Carian & penapis ---------- */
.filter-bar{
  display:flex;gap:12px;flex-wrap:wrap;justify-content:center;
  background:#fff;padding:18px;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:34px;
}
.filter-bar input,.filter-bar select{
  padding:11px 16px;border:1px solid #d7dceb;border-radius:50px;font-size:.92rem;
  font-family:inherit;min-width:200px;outline:none;
}
.filter-bar input:focus,.filter-bar select:focus{border-color:var(--aqua)}

/* ---------- Borang ---------- */
.form-wrap{max-width:760px;margin:0 auto;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-weight:600;margin-bottom:7px;font-size:.92rem;color:var(--navy)}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 14px;border:1px solid #d7dceb;border-radius:10px;
  font-family:inherit;font-size:.95rem;outline:none;transition:.2s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--aqua);box-shadow:0 0 0 3px rgba(0,180,216,.12)}
.form-group textarea{resize:vertical;min-height:90px}
.required{color:var(--red)}

/* ---------- Alert ---------- */
.alert{padding:14px 18px;border-radius:10px;margin-bottom:18px;font-size:.92rem}
.alert-success{background:#e7f8ef;color:#13703f;border:1px solid #b6e6cd}
.alert-error{background:#fdecec;color:#9b1c1c;border:1px solid #f5c2c2}
.alert-info{background:#e8f4fb;color:#0b5a78;border:1px solid #bfe3f3}

/* ---------- Detail instrumen ---------- */
.detail-wrap{display:grid;grid-template-columns:440px 1fr;gap:34px;align-items:start}
.detail-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#eef1f7}
.detail-img img{width:100%;height:330px;object-fit:cover}
.detail-info h1{font-size:1.9rem;margin-bottom:6px}
.detail-meta{margin:18px 0;border-top:1px solid #eef1f7}
.detail-meta .row{display:flex;padding:11px 0;border-bottom:1px solid #eef1f7}
.detail-meta .row span:first-child{width:150px;color:var(--muted);font-weight:600}
.spec-box{background:var(--bg);border-radius:10px;padding:16px 18px;margin:14px 0;white-space:pre-line}

/* ---------- Mini card (booking/receipt) ---------- */
.mini-instr{display:flex;gap:14px;align-items:center;background:var(--bg);padding:14px;border-radius:10px;margin-bottom:24px}
.mini-instr img{width:80px;height:64px;object-fit:cover;border-radius:8px}
.mini-instr h4{font-size:1rem}
.mini-instr small{color:var(--muted)}

/* ---------- Resi ---------- */
.receipt{max-width:760px;margin:0 auto;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.receipt-head{background:linear-gradient(135deg,var(--navy),var(--aqua));color:#fff;padding:26px 30px;display:flex;justify-content:space-between;align-items:center}
.receipt-head h2{color:#fff;margin:0}
.receipt-head .rimg{width:84px;height:64px;object-fit:cover;border-radius:8px;border:2px solid rgba(255,255,255,.5)}
.receipt-body{padding:30px}
.receipt-table{width:100%;border-collapse:collapse;margin-top:10px}
.receipt-table td{padding:10px 6px;border-bottom:1px solid #eef1f7;font-size:.94rem}
.receipt-table td:first-child{color:var(--muted);font-weight:600;width:42%}
.receipt-id{font-family:'Poppins';font-size:1.1rem;font-weight:700;color:var(--navy)}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#cbd5f5;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1.3fr 1fr 1fr;gap:30px;padding:54px 18px 34px}
.footer-col h3{color:#fff;margin-bottom:14px}
.footer-col h4{color:#fff;margin-bottom:14px;font-size:1.02rem}
.footer-col p{font-size:.9rem;margin-bottom:9px;color:#b9c4ea}
.footer-col a{color:#b9c4ea;transition:.2s}
.footer-col a:hover{color:var(--aqua)}
.social-links{display:flex;gap:10px}
.social-links a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.1);display:grid;place-items:center;color:#fff}
.social-links a:hover{background:var(--aqua)}
.footer-bottom{background:var(--navy-dark);padding:16px 0;text-align:center;font-size:.86rem;color:#9fb0e8}

/* ---------- Utiliti ---------- */
.text-center{text-align:center}
.mt-2{margin-top:18px}
.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state i{font-size:2.6rem;color:#cbd5e1;margin-bottom:12px}

/* ============================================================
   RESPONSIF
   ============================================================ */
@media(max-width:980px){
  .instr-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .detail-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  /* Baris instrumen bertindih menegak (gambar atas, teks bawah) */
  .feature-row, .feature-row.reverse{flex-direction:column}
  .feature-img{flex:none;width:100%;height:220px}
  .feature-img img{min-height:0;height:220px}
  .feature-text{padding:24px 26px}
}
@media(max-width:720px){
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;top:72px;right:0;width:250px;height:calc(100vh - 72px);
    background:#fff;flex-direction:column;align-items:flex-start;gap:0;
    padding:18px;box-shadow:-4px 0 20px rgba(0,0,0,.1);
    transform:translateX(100%);transition:.3s;
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav a{width:100%;padding:12px 4px;border-bottom:1px solid #f0f0f0}
  /* Dropdown jadi senarai biasa dalam menu mobile */
  .nav-dropdown{display:block;width:100%}
  .dropdown-toggle{display:flex;justify-content:space-between;align-items:center;width:100%;padding:12px 4px;border-bottom:1px solid #f0f0f0}
  .dropdown-menu{
    position:static;transform:none;opacity:1;visibility:visible;
    box-shadow:none;min-width:0;max-height:0;overflow:hidden;padding:0;
    border-radius:0;transition:max-height .3s ease;background:var(--bg);
  }
  .nav-dropdown.open .dropdown-menu{max-height:60vh;overflow-y:auto;transform:none}
  .main-nav .dropdown-menu a{padding-left:18px}
  .stats .container{grid-template-columns:repeat(2,1fr)}
  .hero{min-height:460px}
  .hero-content{margin:0 auto;text-align:center;max-width:100%}
  .hero h1{font-size:1.9rem}
  .hero-content .lead{font-size:1.25rem}
  .hero-btns{justify-content:center}
  .instr-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}