/* ==========================================================================
   VARIABLES
   ========================================================================== */
:root{
  /* Brand palette */
  --primary-700: #1198ca;   /* น้ำเงินโทนโลโก้ (เข้ม) */
  --primary-600: #23b0e6;   /* ปรับให้ต่างจาก 500 เล็กน้อย */
  --primary-500: #3abeee;   /* น้ำเงินอ่อน */
  --accent-500:  #e3352b;   /* แดงโลโก้ */

  /* Neutrals */
  --ink:   #222333;
  --bg:    #f6f8fb;

  /* Effects */
  --radius:    14px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow-md: 0 10px 30px rgba(18,31,62,.14);

  /* Extra theme (optional) */
  --bg1:  #17c0ff;  /* cyan sky */
  --bg2:  #1e67de;  /* deep blue */
  --acc:  #17c0ff;  /* cyan accent */
  --acc2: #7f5af0;  /* purple accent */
  --text:  #e6f1ff;
  --muted: #9bb3d9;
  --glow:  0 0 24px rgba(23,192,255,.35);
}

/* ==========================================================================
   BASE
   ========================================================================== */
html, body{
  font-family: 'IBM Plex Sans Thai', system-ui, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a{
  text-decoration: none;
  transition: .4s;
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.bg-primary{ background-color: var(--primary-500) !important; }
.text-primary{ color: var(--primary-500) !important; }
.rounded{ border-radius: 16px !important; }

/* ==========================================================================
   NAVBAR
   ========================================================================== */
.navbar{ box-shadow: var(--shadow-sm); }
.navbar-brand img{ height: 44px; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position: relative;
  display: grid;
  place-items: center;
  min-height: 72vh;
  padding: 96px 0 64px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(10,58,169,.95), rgba(26,88,230,.88)),
    url('https://images.unsplash.com/photo-1518770660439-4636190af475?q=80&w=2000&auto=format&fit=crop') center/cover no-repeat;
  overflow: hidden;
}

.hero .glass{
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

/* Buttons (hero + general) */
.btn-ghost{
  background: #fff;
  color: var(--primary-700);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: background-color .25s ease, color .25s ease, transform .25s ease;
}
.btn-ghost:hover{
  background-color: var(--accent-500) !important;
  color: #fff !important;
  transform: translateY(-1px);
}
.btn-ghost:hover i{ color: #fff !important; } /* FIX: ไม่ให้ไอคอนกลืนสี */

.btn-light{ border-radius: 100px; }

/* Hero badge */
.hero-badge{
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .9rem;
  border-radius: 999px;
  color: #fff;
  background: var(--primary-500);
  border: 1px solid rgba(255,255,255,.15);
  transition: background-color .25s ease;
}
.hero-badge:hover{ background-color: var(--primary-700); }

/* Wifi waves (inside badge) */
.wifi-signal{ display:flex; align-items:center; gap:3px; }
.wave{
  width:8px; height:4px;
  background:#cfffcf;
  border-radius:2px;
  box-shadow:0 0 5px #c1f4c1;
  animation: wavePulse 2s infinite ease-in-out;
  transition: height .4s, background .4s, box-shadow .4s;
}
.wave:nth-child(1){ animation-delay:0s; }
.wave:nth-child(2){ animation-delay:.3s; }
.wave:nth-child(3){ animation-delay:.6s; }
.wave:nth-child(4){ animation-delay:.9s; }

@keyframes wavePulse{
  0%,100%{ transform: scaleY(1);   opacity:.5; }
  50%     { transform: scaleY(1.8); opacity:1; }
}
.hero-badge:hover .wave{
  height:10px;
  background:#00ff00;
  box-shadow:0 0 5px #00ff00;
}

/* ==========================================================================
   SECTION TITLES
   ========================================================================== */
.section-title{
  color: var(--primary-700);
  font-weight: 700;
  letter-spacing: .2px;
}

/* ==========================================================================
   CARDS (generic)
   ========================================================================== */
.card-soft{
  border: 0;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .28s ease, box-shadow .28s ease;
}
.card-soft:hover{
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.card-soft img{
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ==========================================================================
   CUSTOMER / PARTNER LOGOS
   ========================================================================== */
.customer-logo-card{
  position: relative;
  display: flex; align-items:center; justify-content:center;
  aspect-ratio: 1 / 1;
  min-height: 80px;
  padding: .75rem;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(17,152,202,.1);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  cursor: pointer;
  transition: transform .3s cubic-bezier(.4,0,.2,1), box-shadow .3s, border-color .3s;
}
.customer-logo-card::before{
  content:'';
  position:absolute; top:0; left:0; right:0; height:3px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-700));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.customer-logo-card:hover::before{ transform: scaleX(1); }
.customer-logo-card:hover{
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 8px 20px rgba(17,152,202,.12), 0 0 15px rgba(17,152,202,.08);
  border-color: var(--primary-500);
}

.customer-logo-img{
  max-width:100%; max-height:100%;
  object-fit: contain;
  filter: grayscale(20%);
  transition: filter .3s ease, transform .3s ease;
}
.customer-logo-card:hover .customer-logo-img{
  filter: grayscale(0%) brightness(1.1);
  transform: scale(1.03);
}

/* Partner variation */
#partners .customer-logo-card{
  background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
  border: 1px solid rgba(23,192,255,.15);
}
#partners .customer-logo-card:hover{
  border-color: var(--primary-500);
  box-shadow: 0 8px 20px rgba(23,192,255,.15), 0 0 15px rgba(23,192,255,.08);
}

/* ==========================================================================
   FLOATING NETWORK ANIMATION
   ========================================================================== */
.net-scape{
  position: relative;
  min-height: 420px;
  border-radius: var(--radius);
  color:#fff; overflow: hidden;
  background: linear-gradient(180deg, var(--primary-500) 0%, var(--primary-500) 60%, var(--primary-500) 100%);
  box-shadow: var(--shadow-md);
}
.node{
  position:absolute; font-size:32px; opacity:.9;
  filter: drop-shadow(0 6px 18px rgba(0,0,0,.35));
  animation: floatY 6s ease-in-out infinite;
}
.node:nth-child(2){ animation-duration: 7.5s; }
.node:nth-child(3){ animation-duration: 8.2s; }
.node:nth-child(4){ animation-duration: 6.7s; }
.node:nth-child(5){ animation-duration: 7.9s; }

@keyframes floatY{
  0%{   transform: translateY(12px); }
  50%{  transform: translateY(-18px); }
  100%{ transform: translateY(12px); }
}
.glow-link{
  position:absolute; width:2px; height:160px;
  background: linear-gradient(#9ec2ff, transparent);
  opacity:.45; filter: blur(.3px);
}
.chip{
  position:absolute; width:140px; height:90px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.22);
  background: rgba(255,255,255,.06);
}
.chip::before{
  content:""; position:absolute; inset:10px;
  border-radius:8px; border:1px dashed rgba(255,255,255,.25);
}

/* ==========================================================================
   PRIVACY POLICY (content styles)
   ========================================================================== */
.privacy-content h2{
  color: var(--primary-700);
  font-weight: 700;
  margin: 2rem 0 1.5rem;
  padding-bottom: .5rem;
  border-bottom: 3px solid var(--primary-500);
}
.privacy-content h4{
  color: var(--primary-600);
  font-weight: 600;
  margin: 1.5rem 0 1rem;
}
.privacy-content p{
  color: #555;
  line-height: 1.7;
  margin-bottom: 1rem;
}
.privacy-content ul{ margin-bottom: 1.5rem; padding-left: 2rem; }
.privacy-content li{
  color:#666; line-height:1.6; margin-bottom:.5rem;
}
.privacy-content .contact-info{
  background:#f8f9fa;
  padding:1.5rem;
  border-radius: var(--radius);
  border-left:4px solid var(--primary-500);
}
.privacy-content .contact-info p{ color:#333; margin-bottom:.5rem; }
.privacy-content .contact-info i{ color: var(--primary-500); margin-right:.5rem; }

/* ==========================================================================
   TOGGLE BUTTON (unlock-style)
   ========================================================================== */
.toggle-btn{
  position: relative;
  border: none !important;
  background: #e9ecef;
  color: #000 !important;
  padding-left: 50px !important;
  padding-right: 16px !important;
  transition: background .3s, color .3s, padding .3s;
}
.toggle-btn:hover{
  background: var(--primary-500);
  color: #fff !important;
  padding-left: 16px !important;
  padding-right: 50px !important;
}
.toggle-btn .icon-circle{
  position:absolute; top:50%; left:10px;
  transform: translateY(-50%);
  width:30px; height:30px; border-radius:50%;
  background:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 2px 4px rgba(0,0,0,.2);
  transition: left .3s ease;
}
.toggle-btn:hover .icon-circle{ left: calc(100% - 40px); }
.toggle-btn .icon-circle i{ font-size:14px; color: var(--primary-700); }
.toggle-btn:hover .icon-circle i{ color: #fff; } /* ให้ตัดกับพื้นหลัง */
.toggle-btn.btn-light:hover{ background:#23b845; }
.toggle-btn.btn-light:hover .icon-circle i{ color:#fff; }

/* ==========================================================================
   BANNER OVERLAY
   ========================================================================== */
.banner-overlay{
  position: relative; z-index: 100;
  display:flex; align-items:center; justify-content:center;
  height:100%;
  padding: 100px 16px;
}
.banner-overlay h1,
.banner-overlay p{
  text-shadow: 1px 1px 5px rgba(0,0,0,.3);
}

/* ==========================================================================
   SERVICE CARDS
   ========================================================================== */
.service-card{
  position:relative; cursor:pointer; overflow:hidden;
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
  border: 1px solid rgba(17,152,202,.1);
  transition: transform .4s cubic-bezier(.4,0,.2,1), box-shadow .4s, border-color .4s;
}
.service-card::before{
  content:'';
  position:absolute; top:0; left:0; right:0; height:4px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-700));
  transform: scaleX(0); transform-origin:left;
  transition: transform .3s ease;
}
.service-card:hover::before{ transform: scaleX(1); }
.service-card:hover{
  transform: translateY(-8px);
  border-color: var(--primary-500);
  box-shadow: 0 20px 40px rgba(17,152,202,.15);
}

.service-icon{
  width:80px; height:80px; margin:0 auto 1.5rem;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
  box-shadow: 0 8px 25px rgba(17,152,202,.3);
  transition: transform .3s ease, box-shadow .3s ease;
}
.service-card:hover .service-icon{
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 35px rgba(17,152,202,.4), 0 0 30px rgba(17,152,202,.2);
}
.service-icon i{
  font-size: 2.5rem; color: #fff;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.2));
}

.service-content{ text-align:center; }
.service-title{
  margin-bottom:.75rem; line-height:1.2;
  font-size:2rem; font-weight:700; color: var(--primary-700);
  transition: color .3s ease;
}
.service-card:hover .service-title{ color: var(--primary-500); }
.service-description{
  font-size:.9rem;
  color:#6c757d; line-height:1.5;
  max-width: 80%;
  margin: auto;
}

/* Contact card (accent block) */
.contact-card{
  background-color: var(--primary-500);
  color:#fff; border-radius:12px;
}

/* Navbar (WP menu integration) */
.navbar .nav-link{
  color: var(--ink);
  padding: .6rem .8rem;
  transition: color .2s, background .2s;
}
.navbar .nav-link:hover{
  color: var(--primary-700);
}
.navbar .nav-item .dropdown-menu{
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  border: 0;
}
.navbar .nav-item.active > .nav-link,
.navbar .nav-link.active{
  color: var(--primary-700);
  font-weight: 600;
}

/* ==========================================================================
   CASE STUDY
   ========================================================================== */
.case-study-card{
  background:#fff; border-radius: var(--radius);
  border:1px solid rgba(17,152,202,.1);
  padding:2.5rem; margin-bottom:3rem;
  box-shadow: 0 4px 20px rgba(0,0,0,.08);
  transition: transform .3s ease, box-shadow .3s ease;
}
.case-study-card:hover{
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(17,152,202,.15);
}

.case-study-image{
  position:relative; overflow:hidden; border-radius: var(--radius);
  box-shadow: 0 8px 25px rgba(0,0,0,.1);
}
.case-study-image img{ transition: transform .3s ease; }
.case-study-card:hover .case-study-image img{ transform: scale(1.05); }

.case-study-badge{ position:absolute; top:1rem; right:1rem; z-index:2; }
.case-study-badge .badge{
  font-size:.8rem; padding:.5rem 1rem; font-weight:600;
  border-radius:20px; box-shadow:0 2px 8px rgba(0,0,0,.15);
}

.case-study-title{
  position:relative;
  margin-bottom:1.5rem;
  color: var(--primary-700);
  font-size:1.8rem; font-weight:700; line-height:1.3;
}
.case-study-title::after{
  content:''; position:absolute; left:0; bottom:-8px;
  width:60px; height:3px; border-radius:2px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-700));
}

.case-study-section h5{ font-size:1.1rem; font-weight:600; margin-bottom:1rem; }
.case-study-section ul{ padding-left:1.5rem; margin-bottom:1.5rem; }
.case-study-section li{
  position:relative; color:#555; line-height:1.6; margin-bottom:.5rem;
}
.case-study-section li::marker{ color: var(--primary-500); }

/* Results grid */
.results-grid{
  display:grid; gap:1.5rem; margin-top:1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}
.result-item{
  text-align:center; padding:1.5rem 1rem;
  color:#fff; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
  box-shadow: 0 4px 15px rgba(17,152,202,.3);
  transition: transform .3s ease;
}
.result-item:hover{ transform: translateY(-3px); }
.result-number{
  display:block; margin-bottom:.5rem;
  font-size:2.2rem; font-weight:700;
  text-shadow: 0 2px 4px rgba(0,0,0,.2);
}
.result-label{ font-size:.9rem; font-weight:500; opacity:.9; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
/* Customer logos */
@media (min-width: 1200px){
  .customer-logo-card{ padding: 1.25rem; min-height: 100px; }
}
@media (max-width: 992px){
  .customer-logo-card{ padding: .75rem; min-height: 80px; }
  .case-study-card{ padding: 2rem; }
  .case-study-title{ font-size: 1.6rem; }
  .results-grid{ grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .result-number{ font-size: 1.8rem; }
}
@media (max-width: 768px){
  .customer-logo-card{ padding: .5rem; min-height: 70px; }

  .service-card{ padding: 1.5rem 1rem; }
  .service-icon{ width:70px; height:70px; margin-bottom:1rem; }
  .service-icon i{ font-size:2rem; }
  .service-title{ font-size:1.4rem; }
  .service-description{ font-size:.85rem; }

  .case-study-card{ padding: 1.5rem; margin-bottom: 2rem; }
  .case-study-title{ font-size: 1.4rem; }
  .results-grid{ grid-template-columns: 1fr; gap: 1rem; }
  .result-number{ font-size: 1.5rem; }

  /* Privacy */
  .privacy-content h2{ font-size:1.5rem; }
  .privacy-content h4{ font-size:1.2rem; }
  .privacy-content .contact-info{ padding:1rem; }

  .mobile-menu {
    text-align: center;
  }

  .mobile-menu li a {
    display: block;
    border-bottom: 1px solid #eee;
    font-size: 24px;
  }

  .hero-badge {
    font-size: 24px;
    display: inline-flex;
    margin: 20px 0;
  }

  .navbar .nav-link {
    padding: 20px 0;
  }

  .wave-hero {
    min-height: 80vh;
  }
}
@media (max-width: 576px){
  .customer-logo-card{ padding: .4rem; min-height: 60px; }

  .service-card{ padding: 1.25rem .75rem; }
  .service-title{ font-size: 1.2rem; }

  .case-study-card{ padding: 1.25rem; }
  .case-study-title{ font-size: 1.2rem; }
}