/* ===== Nidnoy Tour & Travel — Blue/White Theme ===== */
:root{
  --sky:#38bdf8;        /* ฟ้าท้องฟ้า */
  --sea:#0ea5e9;        /* ฟ้าน้ำทะเล */
  --deep:#0369a1;       /* น้ำเงินเข้ม */
  --ink:#0c2740;        /* ตัวอักษรเข้ม */
  --muted:#5b7086;      /* เทา-ฟ้า */
  --sand:#fef3c7;       /* ทราย */
  --coral:#fb7185;      /* ปะการัง (CTA เด่น) */
  --line:#e2eef7;
  --tint:#f0f9ff;       /* พื้นอ่อน */
  --white:#ffffff;
  --shadow:0 10px 30px -12px rgba(3,105,161,.28);
  --radius:18px;
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Prompt','Kanit',system-ui,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.6;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:'Kanit',sans-serif;font-weight:600;line-height:1.2}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.grad{background:linear-gradient(120deg,var(--sea),var(--sky));-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{color:var(--sea);font-weight:600;letter-spacing:.03em;margin-bottom:8px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:'Kanit',sans-serif;font-weight:500;border:none;cursor:pointer;
  padding:13px 26px;border-radius:999px;font-size:16px;transition:.25s;white-space:nowrap}
.btn--primary{background:linear-gradient(120deg,var(--sea),var(--sky));color:#fff;
  box-shadow:0 8px 20px -6px rgba(14,165,233,.6)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px -6px rgba(14,165,233,.75)}
.btn--ghost{background:var(--tint);color:var(--deep)}
.btn--ghost:hover{background:var(--sky);color:#fff}
.btn--sm{padding:9px 18px;font-size:14px}
.btn--lg{padding:16px 30px;font-size:18px}
.btn--block{width:100%}

/* ===== Navbar ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.72);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:.3s}
.nav.scrolled{background:rgba(255,255,255,.92);border-color:var(--line);box-shadow:0 4px 20px -12px rgba(3,105,161,.3)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:8px;font-family:'Kanit';font-weight:700;font-size:22px}
.brand__icon{font-size:24px;animation:bob 3s ease-in-out infinite}
.brand__accent{color:var(--sea)}
.brand--light{color:#fff}
.nav__links{display:flex;gap:28px}
.nav__links a{font-weight:500;color:var(--ink);position:relative;padding:4px 0}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--sea);transition:.3s}
.nav__links a:hover::after{width:100%}
.nav__actions{display:flex;align-items:center;gap:12px}
.lang-toggle{background:none;border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-family:'Kanit';font-size:13px;color:var(--muted);cursor:pointer;transition:.25s}
.lang-toggle:hover{border-color:var(--sky);color:var(--sea)}
.nav__burger{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--ink)}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;
  padding:120px 0 160px;overflow:hidden;color:var(--ink)}
.hero__bg{position:absolute;inset:0;z-index:-2;
  background:
    linear-gradient(100deg,rgba(247,252,255,.97) 0%,rgba(247,252,255,.86) 34%,rgba(233,246,255,.5) 60%,rgba(233,246,255,.12) 100%),
    url('images/hero.jpg') center 30%/cover no-repeat}
.hero__bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 60%,#ffffff 100%)}
.hero__content{position:relative;z-index:1;max-width:820px}
.hero__eyebrow{display:inline-block;background:#fff;border:1px solid var(--line);
  padding:7px 16px;border-radius:999px;font-weight:500;color:var(--sea);margin-bottom:18px;box-shadow:var(--shadow)}
.hero__title{font-size:clamp(2.3rem,6vw,4rem);font-weight:700;margin-bottom:18px}
.hero__title span{display:block}
.hero__sub{font-size:clamp(1rem,2vw,1.2rem);color:var(--muted);max-width:600px;margin-bottom:30px}

/* Search card */
.search{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);
  border:1px solid var(--line);max-width:760px;overflow:hidden}
.search__tabs{display:flex;gap:4px;padding:8px 8px 0}
.search__tab{flex:1;background:none;border:none;padding:12px;font-family:'Kanit';
  font-size:15px;color:var(--muted);cursor:pointer;border-radius:12px 12px 0 0;transition:.25s}
.search__tab.is-active{color:var(--deep);background:var(--tint);font-weight:500}
.search__body{display:grid;grid-template-columns:1.3fr 1fr .8fr auto;gap:14px;
  align-items:end;padding:18px;background:var(--tint)}
.search__body.is-hidden{display:none}
.field{display:flex;flex-direction:column;gap:6px;text-align:left}
.field label{font-size:13px;font-weight:500;color:var(--muted)}
.field input,.field select,.field textarea{
  font-family:'Prompt';font-size:15px;padding:11px 13px;border:1px solid var(--line);
  border-radius:11px;background:#fff;color:var(--ink);transition:.2s;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--sky);box-shadow:0 0 0 3px rgba(56,189,248,.18)}

/* Stats */
.hero__stats{display:inline-flex;flex-wrap:wrap;margin-top:40px;
  background:rgba(255,255,255,.7);backdrop-filter:blur(6px);
  border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);
  padding:22px 8px;gap:0}
.stat{display:flex;flex-direction:column;gap:4px;padding:4px 30px;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:64%;background:var(--line)}
.stat__num{font-family:'Kanit';font-size:2.6rem;font-weight:700;line-height:1;
  background:linear-gradient(120deg,var(--deep),var(--sea));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat__lbl{font-size:14px;font-weight:500;color:var(--muted)}

/* Wave */
.hero__wave{position:absolute;bottom:-1px;left:0;width:100%;line-height:0;z-index:0}
.hero__wave svg{width:100%;height:110px;display:block}
.hero__wave path{fill:#fff;animation:wave 8s ease-in-out infinite}

/* ===== Sections ===== */
.section{padding:90px 0}
.section--tint{background:var(--tint)}
.section__head{text-align:center;max-width:620px;margin:0 auto 44px}
.section__head h2{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:12px}
.section__desc{color:var(--muted)}

/* Filters */
.filters{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.chip{background:#fff;border:1px solid var(--line);color:var(--muted);
  padding:9px 20px;border-radius:999px;font-family:'Kanit';font-size:14px;cursor:pointer;transition:.25s}
.chip:hover{border-color:var(--sky);color:var(--sea)}
.chip.is-active{background:linear-gradient(120deg,var(--sea),var(--sky));color:#fff;border-color:transparent}

/* Tours grid */
.tours-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:26px}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:0 4px 18px -12px rgba(3,105,161,.25);transition:.35s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-8px);box-shadow:0 22px 40px -20px rgba(3,105,161,.5)}
.card.is-hide{display:none}
.card__media{position:relative;height:200px;background:var(--tint);overflow:hidden}
.card__media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .55s ease}
.card:hover .card__media img{transform:scale(1.08)}
.card__media::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,transparent 55%,rgba(0,0,0,.18))}
.card__badge{position:absolute;top:14px;left:14px;z-index:2;background:var(--coral);color:#fff;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;font-family:'Kanit'}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__row{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.card__row h3{font-size:1.15rem}
.card__rate{font-size:14px;color:var(--deep);font-weight:600;white-space:nowrap}
.card__desc{color:var(--muted);font-size:14px}
.card__meta{list-style:none;display:flex;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--muted)}
.card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line)}
.price{font-family:'Kanit';font-size:1.5rem;font-weight:700;color:var(--deep);display:flex;flex-direction:column;line-height:1}
.price small{font-size:11px;font-weight:400;color:var(--muted)}

/* ===== Transfer ===== */
.transfer{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.transfer h2{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:12px}
.feat-list{list-style:none;margin:22px 0;display:flex;flex-direction:column;gap:12px}
.feat-list li{font-weight:500}
.road{position:relative;height:60px;margin-top:24px;overflow:hidden}
.road__line{position:absolute;bottom:14px;left:0;right:0;height:3px;
  background:repeating-linear-gradient(90deg,var(--sky) 0 22px,transparent 22px 40px);opacity:.5}
.van{position:absolute;bottom:6px;font-size:40px;animation:drive 6s linear infinite}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px}
.quote h3{font-size:1.3rem}
.quote__result{display:flex;justify-content:space-between;align-items:center;
  background:var(--tint);padding:16px 20px;border-radius:14px;margin-top:4px}
.quote__result span{color:var(--muted);font-weight:500}
.quote__result strong{font-family:'Kanit';font-size:2rem;color:var(--deep);transition:.3s}
.quote__note{font-size:12px;color:var(--muted);text-align:center}

/* ===== Why ===== */
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.why{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  text-align:center;transition:.3s}
.why:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.why__ico{font-size:44px;display:inline-block;margin-bottom:14px;animation:bob 4s ease-in-out infinite}
.why h3{margin-bottom:8px;font-size:1.2rem}
.why p{color:var(--muted);font-size:14px}

/* ===== Reviews ===== */
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 4px 18px -14px rgba(3,105,161,.3)}
.review__stars{color:#fbbf24;font-size:18px;letter-spacing:2px;margin-bottom:12px}
.review p{color:var(--ink);margin-bottom:18px}
.review footer{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:14px;font-weight:500}
.review__ava{font-size:26px;background:var(--tint);width:44px;height:44px;display:grid;place-items:center;border-radius:50%}

/* ===== Booking ===== */
.booking{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:start}
.booking h2{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:12px}
.booking__contacts{display:flex;flex-direction:column;gap:12px;margin-top:24px}
.cc{display:flex;align-items:center;gap:12px;background:var(--tint);padding:14px 18px;
  border-radius:14px;font-weight:500;transition:.25s}
.cc:hover{background:var(--sky);color:#fff;transform:translateX(4px)}
.cc span{font-size:20px}
.booking__form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px}
.field-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.booking__ok{display:none;background:#dcfce7;color:#166534;padding:12px;border-radius:12px;text-align:center;font-weight:500}
.booking__ok.show{display:block;animation:pop .4s ease}

/* ===== Footer ===== */
.footer{background:var(--ink);color:#cfe3f2;padding:60px 0 0}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;padding-bottom:40px}
.footer h4{color:#fff;margin-bottom:14px;font-size:16px}
.footer a{display:block;color:#a9c6dc;margin-bottom:10px;transition:.2s}
.footer a:hover{color:var(--sky)}
.footer__about{color:#9fbdd4;font-size:14px;margin-top:12px}
.footer__bar{border-top:1px solid rgba(255,255,255,.1);text-align:center;padding:20px;font-size:13px;color:#7fa0ba}

/* ===== FABs ===== */
.fabs{position:fixed;right:20px;bottom:20px;z-index:90;display:flex;flex-direction:column;gap:12px}
.fab{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;font-size:24px;
  box-shadow:var(--shadow);transition:.3s;cursor:pointer}
.fab--line{background:#06c755;color:#fff;animation:pulse 2.4s ease-in-out infinite}
.fab--line:hover{transform:scale(1.1)}
.fab--top{background:#fff;color:var(--deep);border:1px solid var(--line);opacity:0;pointer-events:none;transform:translateY(10px)}
.fab--top.show{opacity:1;pointer-events:auto;transform:translateY(0)}

/* ===== Reveal on scroll ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.reveal--d1{transition-delay:.1s}.reveal--d2{transition-delay:.2s}
.reveal--d3{transition-delay:.35s}.reveal--d4{transition-delay:.5s}.reveal--d5{transition-delay:.65s}

/* ===== Keyframes ===== */
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes drift{from{transform:translateX(0)}to{transform:translateX(160vw)}}
@keyframes wave{0%,100%{d:path("M0,64 C240,120 480,0 720,48 C960,96 1200,16 1440,64 L1440,120 L0,120 Z")}50%{d:path("M0,48 C240,16 480,110 720,64 C960,20 1200,100 1440,48 L1440,120 L0,120 Z")}}
@keyframes drive{0%{left:-60px}100%{left:calc(100% + 20px)}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(6,199,85,.5)}50%{box-shadow:0 0 0 14px rgba(6,199,85,0)}}
@keyframes pop{0%{transform:scale(.9);opacity:0}100%{transform:scale(1);opacity:1}}

/* ===== Responsive ===== */
@media(max-width:900px){
  .nav__links{position:fixed;top:68px;left:0;right:0;flex-direction:column;background:#fff;
    padding:20px;gap:16px;border-bottom:1px solid var(--line);transform:translateY(-120%);
    transition:.35s;box-shadow:var(--shadow)}
  .nav__links.open{transform:translateY(0)}
  .nav__burger{display:block}
  .search__body{grid-template-columns:1fr 1fr}
  .search__go{grid-column:1/-1}
  .transfer,.booking{grid-template-columns:1fr;gap:34px}
}
@media(max-width:560px){
  .section{padding:64px 0}
  .search__body{grid-template-columns:1fr}
  .field-2{grid-template-columns:1fr}
  .hero__stats{display:grid;grid-template-columns:1fr 1fr;gap:18px 0;width:100%;padding:20px 4px}
  .stat{padding:6px 10px;text-align:center;align-items:center}
  .stat + .stat::before{display:none}
  .stat:nth-child(even)::before{content:"";display:block;left:0;height:70%}
  .stat__num{font-size:2rem}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .reveal{opacity:1;transform:none;transition:none}
}