/* ============================================
   SIAMSIVAKORN – Green & Gold Theme
   ============================================ */

:root {
  --forest:     #0C2208;
  --green-dk:   #1A4C0C;
  --green-md:   #2A7E18;
  --green-br:   #4AAC20;
  --green-lt:   #8ED455;
  --gold:       #C9A020;
  --gold-light: #E8C840;
  --copper:     #8B5A2B;
  --white:      #FFFFFF;
  --off-white:  #F0F9EC;
  --gray-100:   #E4F2DC;
  --gray-200:   #CCE4C0;
  --gray-400:   #7EA870;
  --gray-600:   #4A6A38;
  --gray-800:   #283820;
  --text:       #1C2818;
  --text-muted: #4A6838;

  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  32px;

  --shadow-sm:  0 2px 8px rgba(12,34,8,.08);
  --shadow-md:  0 8px 32px rgba(12,34,8,.14);
  --shadow-lg:  0 20px 60px rgba(12,34,8,.18);
  --shadow-glow:0 0 40px rgba(74,172,32,.28);

  --transition: all .3s cubic-bezier(.4,0,.2,1);
  --font: 'Sarabun', 'Prompt', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: 1rem; outline: none; border: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 100px 0; }

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000; padding: 1.25rem 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(12,34,8,.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: .85rem 0;
  box-shadow: 0 4px 30px rgba(0,0,0,.25);
}
.nav-inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 2rem;
}

.logo { display: flex; align-items: center; gap: .65rem; color: var(--white); font-weight: 700; }
.logo-svg { display: flex; align-items: center; }
.logo-text { font-size: 1.05rem; letter-spacing: .02em; }
.logo-text em {
  font-style: normal; color: var(--gold-light);
  font-size: .82em; display: block;
  font-weight: 400; letter-spacing: .05em; line-height: 1;
}

.nav-links { display: flex; align-items: center; gap: .25rem; }
.nav-links li a {
  color: rgba(255,255,255,.85); font-size: .95rem;
  font-weight: 500; padding: .5rem 1rem;
  border-radius: var(--radius-sm); transition: var(--transition);
}
.nav-links li a:hover { color: var(--white); background: rgba(255,255,255,.1); }
.nav-links .nav-cta {
  background: var(--gold); color: var(--forest) !important; font-weight: 700;
  padding: .55rem 1.25rem !important;
}
.nav-links .nav-cta:hover { background: var(--gold-light) !important; transform: translateY(-1px); }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: .5rem; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden; padding: 7rem 0 5rem;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #0C2208 0%, #1A4C0C 40%, #2A7E18 75%, #3E9A18 100%);
}
.hero-pattern {
  position: absolute; inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"),
    radial-gradient(circle at 20% 50%, rgba(232,200,64,.10) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(74,172,32,.18) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(42,126,24,.12) 0%, transparent 40%);
}

.hero-content { position: relative; z-index: 1; color: var(--white); max-width: 780px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: .6rem;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  backdrop-filter: blur(10px); padding: .5rem 1.2rem;
  border-radius: 100px; font-size: .88rem; font-weight: 500;
  margin-bottom: 1.75rem; color: rgba(255,255,255,.9); letter-spacing: .04em;
}
.badge-dot {
  width: 8px; height: 8px; background: var(--gold);
  border-radius: 50%; animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .6; transform: scale(.8); }
}

.hero-title {
  font-family: 'Prompt', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800; line-height: 1.15;
  margin-bottom: 1.25rem; letter-spacing: -.02em;
}
.gradient-text {
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold-light) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.hero-sub {
  font-size: 1.15rem; color: rgba(255,255,255,.75);
  margin-bottom: 2.25rem; max-width: 600px; line-height: 1.8;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }

.hero-stats {
  display: flex; align-items: center; gap: 2rem;
  background: rgba(255,255,255,.08); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-md); padding: 1.25rem 2rem; width: fit-content;
}
.stat-item { text-align: center; }
.stat-num { font-family: 'Prompt', sans-serif; font-size: 2rem; font-weight: 800; color: var(--gold); line-height: 1; }
.stat-plus { font-size: 1.5rem; font-weight: 800; color: var(--gold); }
.stat-label { display: block; font-size: .8rem; color: rgba(255,255,255,.65); margin-top: .25rem; font-weight: 400; }
.stat-divider { width: 1px; height: 50px; background: rgba(255,255,255,.2); }

.hero-scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  color: rgba(255,255,255,.45); font-size: .78rem; letter-spacing: .08em; z-index: 1;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid rgba(255,255,255,.4); border-bottom: 2px solid rgba(255,255,255,.4);
  transform: rotate(45deg); animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(5px); }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .85rem 2rem; border-radius: var(--radius-sm);
  font-size: 1rem; font-weight: 600;
  transition: var(--transition); letter-spacing: .02em; cursor: pointer;
}
.btn-primary { background: var(--gold); color: var(--forest); }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,160,32,.4); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.4); }
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.1); transform: translateY(-2px); }
.section .btn-outline { color: var(--green-md); border-color: var(--green-md); }
.section .btn-outline:hover { background: var(--green-md); color: var(--white); }
.btn-full { width: 100%; justify-content: center; }
.btn-arrow { font-size: 1.1rem; transition: transform .3s; }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-eyebrow {
  display: inline-block; font-size: .82rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--green-br); background: rgba(74,172,32,.1);
  padding: .4rem 1rem; border-radius: 100px; margin-bottom: 1rem;
}
.eyebrow-light { color: var(--gold); background: rgba(201,160,32,.18); }
.section-title {
  font-family: 'Prompt', sans-serif;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800; line-height: 1.2;
  color: var(--forest); letter-spacing: -.02em; margin-bottom: 1rem;
}
.section-sub { font-size: 1.05rem; color: var(--text-muted); max-width: 560px; line-height: 1.75; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header .section-sub { margin: 0 auto; }
.section-header.light .section-title { color: var(--white); }
.section-header.light .section-sub { color: rgba(255,255,255,.65); }

/* ============================================
   ABOUT
   ============================================ */
.about { background: var(--off-white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.about-visual { display: flex; justify-content: center; }
.about-card-main {
  position: relative; width: 380px; height: 380px;
  display: flex; align-items: center; justify-content: center;
}
.about-icon-ring { position: relative; width: 200px; height: 200px; display: flex; align-items: center; justify-content: center; }
.ring { position: absolute; border-radius: 50%; border: 1px solid; animation: spin-slow linear infinite; }
.ring-1 { width: 200px; height: 200px; border-color: rgba(74,172,32,.18); animation-duration: 20s; }
.ring-2 { width: 160px; height: 160px; border-color: rgba(201,160,32,.28); border-style: dashed; animation-duration: 15s; animation-direction: reverse; }
.ring-3 { width: 120px; height: 120px; border-color: rgba(42,126,24,.32); animation-duration: 10s; }
@keyframes spin-slow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.about-center-icon { font-size: 3rem; z-index: 1; position: relative; }
.about-badge-float {
  position: absolute; background: var(--white); border-radius: var(--radius-md);
  padding: .75rem 1.25rem; font-size: .85rem; font-weight: 600;
  color: var(--forest); box-shadow: var(--shadow-md);
  display: flex; align-items: center; gap: .5rem; white-space: nowrap;
}
.about-badge-float span { color: var(--gold); font-size: 1.1rem; }
.badge-top { top: 30px; right: -10px; }
.badge-bottom { bottom: 30px; left: -10px; }

.about-text .section-title { margin-top: .5rem; }
.about-desc { color: var(--text-muted); font-size: 1.05rem; line-height: 1.8; margin-bottom: 2rem; }
.about-features { display: flex; flex-direction: column; gap: 1.25rem; margin-bottom: 2.25rem; }
.about-features li { display: flex; align-items: flex-start; gap: 1rem; }
.feature-icon {
  font-size: 1.4rem; width: 44px; height: 44px; min-width: 44px;
  background: rgba(74,172,32,.1); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
}
.about-features li strong { display: block; color: var(--forest); font-size: 1rem; margin-bottom: .25rem; }
.about-features li p { color: var(--text-muted); font-size: .92rem; }

/* ============================================
   SERVICES
   ============================================ */
.services { background: var(--white); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; align-items: start; }
.service-card {
  background: var(--off-white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 2.25rem;
  position: relative; transition: var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-featured {
  background: linear-gradient(145deg, var(--forest) 0%, var(--green-dk) 100%);
  border-color: transparent; color: var(--white);
  transform: translateY(-12px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}
.service-featured:hover { transform: translateY(-18px); }
.service-tag {
  position: absolute; top: -12px; left: 1.75rem;
  background: var(--gold); color: var(--forest);
  font-size: .78rem; font-weight: 800; letter-spacing: .06em;
  padding: .3rem .9rem; border-radius: 100px; text-transform: uppercase;
}
.service-icon-wrap {
  width: 60px; height: 60px; background: rgba(74,172,32,.1);
  border-radius: var(--radius-md); display: flex;
  align-items: center; justify-content: center;
  font-size: 1.75rem; margin-bottom: 1.25rem;
}
.service-featured .service-icon-wrap { background: rgba(255,255,255,.12); }
.service-card h3 { font-family: 'Prompt', sans-serif; font-size: 1.25rem; font-weight: 700; margin-bottom: .75rem; color: var(--forest); }
.service-featured h3 { color: var(--white); }
.service-card p { color: var(--text-muted); font-size: .95rem; line-height: 1.7; margin-bottom: 1.5rem; }
.service-featured p { color: rgba(255,255,255,.7); }
.service-list { display: flex; flex-direction: column; gap: .6rem; margin-bottom: 1.75rem; }
.service-list li { font-size: .92rem; color: var(--text-muted); }
.service-featured .service-list li { color: rgba(255,255,255,.75); }

/* ============================================
   WHY
   ============================================ */
.why { position: relative; overflow: hidden; background: transparent; }
.why-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #0C2208 0%, #1A4C0C 60%, #102608 100%);
  z-index: 0;
}
.why .container { position: relative; z-index: 1; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.why-card {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-md); padding: 1.75rem; transition: var(--transition);
}
.why-card:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); }
.why-num { font-family: 'Prompt', sans-serif; font-size: 2.25rem; font-weight: 800; color: var(--gold); opacity: .55; line-height: 1; margin-bottom: .75rem; }
.why-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--white); margin-bottom: .6rem; }
.why-card p { font-size: .92rem; color: rgba(255,255,255,.6); line-height: 1.7; }

/* ============================================
   CONTACT
   ============================================ */
.contact { background: var(--off-white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; align-items: start; }
.contact-desc { color: var(--text-muted); font-size: 1.05rem; line-height: 1.75; margin-bottom: 2rem; }
.contact-cards { display: flex; flex-direction: column; gap: .85rem; margin-bottom: 1.75rem; }
.contact-card {
  display: flex; align-items: center; gap: 1rem;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-md); padding: 1rem 1.25rem; transition: var(--transition);
}
.contact-card:hover { border-color: var(--green-br); box-shadow: var(--shadow-md); transform: translateX(4px); }
.contact-card-icon { font-size: 1.5rem; }
.contact-card strong { display: block; font-size: .82rem; color: var(--text-muted); font-weight: 500; }
.contact-card span { font-size: 1rem; font-weight: 600; color: var(--forest); }
.hours-box {
  background: var(--white); border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0; padding: 1.25rem 1.5rem;
}
.hours-box strong { display: block; color: var(--forest); font-size: 1rem; margin-bottom: .5rem; }
.hours-box p { font-size: .92rem; color: var(--text-muted); }

.contact-form-wrap { background: var(--white); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow-md); }
.contact-form h3 { font-family: 'Prompt', sans-serif; font-size: 1.4rem; font-weight: 700; color: var(--forest); margin-bottom: 1.75rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .5rem; margin-bottom: 1.25rem; }
.form-group label { font-size: .9rem; font-weight: 600; color: var(--gray-800); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: .85rem 1.1rem;
  border: 1.5px solid var(--gray-200); border-radius: var(--radius-sm);
  font-size: .95rem; color: var(--text); background: var(--off-white); transition: var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--green-br); background: var(--white);
  box-shadow: 0 0 0 3px rgba(74,172,32,.12);
}
.form-group textarea { resize: vertical; }
.form-group select { appearance: none; cursor: pointer; }
.form-note { text-align: center; font-size: .82rem; color: var(--text-muted); margin-top: .75rem; }

/* ============================================
   FOOTER
   ============================================ */
.footer { background: var(--forest); color: rgba(255,255,255,.7); }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 3rem; padding: 4rem 1.5rem 3rem; }
.footer-brand .logo { margin-bottom: 1rem; }
.footer-brand p { font-size: .9rem; line-height: 1.7; }
.footer-links h4, .footer-contact h4 { color: var(--white); font-size: 1rem; font-weight: 700; margin-bottom: 1rem; }
.footer-links ul { display: flex; flex-direction: column; gap: .6rem; }
.footer-links a { font-size: .9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--gold); }
.footer-contact p { font-size: .9rem; margin-bottom: .5rem; }
.footer-contact a { transition: var(--transition); }
.footer-contact a:hover { color: var(--gold); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 1.25rem 1.5rem; text-align: center; font-size: .82rem; color: rgba(255,255,255,.35); }

/* ============================================
   FLOATING BUTTON
   ============================================ */
.fab {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 60px; height: 60px; background: var(--gold);
  border-radius: 50%; display: flex; align-items: center;
  justify-content: center; font-size: 1.5rem;
  box-shadow: 0 8px 24px rgba(201,160,32,.5);
  z-index: 999; transition: var(--transition);
  animation: fab-bounce 3s ease-in-out infinite;
}
.fab:hover { transform: scale(1.1); box-shadow: 0 12px 32px rgba(201,160,32,.6); }
@keyframes fab-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ANIMATIONS */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-visual { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .service-featured { transform: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .hamburger { display: flex; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(12,34,8,.98); padding: 1.5rem;
    flex-direction: column; align-items: flex-start; gap: .25rem;
    border-top: 1px solid rgba(255,255,255,.1);
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links li a { display: block; padding: .75rem 1rem; border-radius: var(--radius-sm); }
  .hero-stats { flex-direction: column; gap: 1rem; width: 100%; padding: 1.25rem; }
  .stat-divider { width: 100%; height: 1px; }
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }
  .hide-mobile { display: none; }
  .why-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; padding: 3rem 1.5rem 2rem; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .contact-form-wrap { padding: 1.75rem; }
}