/* ============================================================
   STwebstudio — Main Stylesheet
   Colors: Teal #0d6e72 | Accent Red #e63946 | White #fff
   ============================================================ */

:root {
  --teal-900: #052e30;
  --teal-800: #073b3e;
  --teal-700: #0a4f52;
  --teal-600: #0d6e72;
  --teal-500: #1a8a8e;
  --teal-400: #2aa8ac;
  --teal-100: #d4eeee;
  --teal-50:  #f0fafa;

  --red-500: #e63946;
  --red-600: #c1121f;

  --white:    #ffffff;
  --gray-50:  #f8f9fa;
  --gray-100: #f0f0f0;
  --gray-200: #e0e0e0;
  --gray-500: #888888;
  --gray-700: #444444;
  --gray-900: #111111;

  --font:        'Sarabun', sans-serif;
  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 4px 24px rgba(0,0,0,0.08);
  --shadow-md:   0 8px 40px rgba(0,0,0,0.14);
  --transition:  all 0.3s cubic-bezier(0.4,0,0.2,1);
  --container:   1200px;
}

/* ── Reset & Base ────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-700);
  background: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Container ───────────────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Buttons ─────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--red-500);
  color: var(--white);
  border-color: var(--red-500);
}
.btn-primary:hover {
  background: var(--red-600);
  border-color: var(--red-600);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230,57,70,0.35);
}

.btn-accent {
  background: var(--red-500);
  color: var(--white);
  border-color: var(--red-500);
  padding: 0.55rem 1.4rem;
  font-size: 0.9rem;
}
.btn-accent:hover {
  background: var(--red-600);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* ── Sections ────────────────────────────────── */
.section {
  padding: 6rem 0;
}
.section--light { background: var(--gray-50); }
.section--dark  { background: var(--teal-800); }

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--gray-900);
  margin: 0.4rem 0 0.8rem;
}
.section-header p {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 560px;
  margin: 0 auto;
}

.section-header--light h2 { color: var(--white); }
.section-header--light p  { color: var(--teal-100); }

.section-tag {
  display: inline-block;
  background: rgba(13,110,114,0.1);
  color: var(--teal-600);
  padding: 0.3rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.section-tag--light {
  background: rgba(255,255,255,0.12);
  color: var(--teal-100);
}

/* ── NAVBAR ──────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  background: var(--teal-900);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.navbar-brand img { height: 44px; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.45rem 0.9rem;
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition);
}
.nav-link:hover { color: var(--white); background: rgba(255,255,255,0.08); }

.nav-cta { margin-left: 0.5rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.3rem;
}
.nav-toggle span {
  display: block;
  width: 25px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--teal-900) 0%, var(--teal-700) 60%, var(--teal-600) 100%);
  overflow: hidden;
  padding-top: 70px;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}
.hero-glow--red {
  width: 500px; height: 500px;
  top: -150px; right: -100px;
  background: rgba(230,57,70,0.18);
}
.hero-glow--teal {
  width: 400px; height: 400px;
  bottom: -100px; left: -100px;
  background: rgba(26,138,142,0.2);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 5rem 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--teal-100);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.badge-dot {
  width: 8px; height: 8px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(1.3); }
}

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 1.25rem;
}

.text-accent { color: var(--red-500); }

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--teal-100);
  margin-bottom: 2rem;
  max-width: 560px;
}
.hero-sub strong { color: var(--white); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--teal-100);
  margin-top: 0.2rem;
}
.stat-divider {
  width: 1px; height: 40px;
  background: rgba(255,255,255,0.2);
}

.hero-scroll-down {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  color: rgba(255,255,255,0.5);
  font-size: 0.8rem;
  animation: bounce 2s infinite;
  z-index: 1;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ── SERVICES ────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal-600), var(--teal-400));
  opacity: 0;
  transition: var(--transition);
}
.service-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
}
.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 56px; height: 56px;
  background: var(--teal-50);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--teal-600);
  margin-bottom: 1.25rem;
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: var(--teal-600);
  color: var(--white);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.6rem;
}
.service-card p {
  font-size: 0.92rem;
  color: var(--gray-500);
  margin-bottom: 1rem;
  line-height: 1.65;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.service-tags span {
  background: var(--teal-50);
  color: var(--teal-600);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border-radius: 50px;
}

.service-card--highlight {
  background: linear-gradient(135deg, var(--teal-700), var(--teal-600));
  border-color: transparent;
  color: var(--white);
}
.service-card--highlight h3 { color: var(--white); }
.service-card--highlight p  { color: var(--teal-100); }
.service-card--highlight .service-icon {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}
.service-card--highlight .service-tags span {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}
.service-card--highlight::before { display: none; }
.service-card--highlight:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(13,110,114,0.4);
}

.card-badge {
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  background: var(--red-500);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.7rem;
  border-radius: 50px;
}

/* ── WHY US ──────────────────────────────────── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 860px;
  margin: 0 auto;
}

.why-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
}
.why-item:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-3px);
}

.why-icon {
  width: 48px; height: 48px;
  background: var(--red-500);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--white);
  flex-shrink: 0;
}

.why-text h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.4rem;
}
.why-text p {
  font-size: 0.9rem;
  color: var(--teal-100);
  line-height: 1.6;
}

/* ── PORTFOLIO GRID ──────────────────────────── */
.pf-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.pf-filter {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.2rem;
  border: 2px solid var(--gray-200);
  border-radius: 50px;
  background: var(--white);
  color: var(--gray-500);
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.pf-filter:hover {
  border-color: var(--teal-600);
  color: var(--teal-600);
}
.pf-filter.active {
  background: var(--teal-600);
  border-color: var(--teal-600);
  color: var(--white);
}
.pf-filter--soon {
  opacity: 0.4;
  cursor: not-allowed;
  position: relative;
}
.pf-filter--soon::after {
  content: 'เร็วๆ นี้';
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-700);
  color: #fff;
  font-size: 0.65rem;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.pf-filter--soon:hover::after { opacity: 1; }

.pf-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.pf-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.pf-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.pf-card.pf-hidden { display: none; }

.pf-img {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--gray-100);
}

.pf-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.pf-card:hover .pf-img img { transform: scale(1.06); }

/* Fallback when image is missing */
.pf-img.pf-no-img {
  background: attr(data-color);
  display: flex;
  align-items: center;
  justify-content: center;
}
.pf-img.pf-no-img img { display: none; }
.pf-img.pf-no-img::before {
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 3rem;
  color: rgba(255,255,255,0.4);
  content: '\f03e';
}

/* Hover overlay */
.pf-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5,46,48,0.95) 0%, rgba(5,46,48,0.5) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
  opacity: 0;
  transition: var(--transition);
}
.pf-card:hover .pf-overlay { opacity: 1; }

.pf-overlay h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  margin: 0.35rem 0 0.25rem;
  transform: translateY(8px);
  transition: transform 0.3s ease 0.05s;
}
.pf-card:hover .pf-overlay h4 { transform: translateY(0); }

.pf-overlay p {
  color: var(--teal-100);
  font-size: 0.82rem;
  transform: translateY(8px);
  transition: transform 0.3s ease 0.1s;
}
.pf-card:hover .pf-overlay p { transform: translateY(0); }

/* Category badge colors */
.pf-cat {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.65rem;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transform: translateY(8px);
  transition: transform 0.3s ease;
}
.pf-card:hover .pf-cat { transform: translateY(0); }

.pf-cat.web  { background: #0d6e72; color: #fff; }
.pf-cat.ta   { background: #c47c00; color: #fff; }
.pf-cat.wms  { background: #1a6b2e; color: #fff; }
.pf-cat.crm  { background: #5b3a9e; color: #fff; }
.pf-cat.mrp  { background: #8b1c2e; color: #fff; }

/* ── PROCESS ─────────────────────────────────── */
.process-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  position: relative;
}

.process-step {
  flex: 1;
  text-align: center;
  padding: 0 1rem;
  position: relative;
}

.step-num {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--red-500);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.step-icon {
  width: 64px; height: 64px;
  background: rgba(255,255,255,0.08);
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--white);
  margin: 0 auto 1rem;
  transition: var(--transition);
}
.process-step:hover .step-icon {
  background: var(--red-500);
  border-color: var(--red-500);
}

.process-step h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
}
.process-step p {
  font-size: 0.88rem;
  color: var(--teal-100);
  line-height: 1.6;
}

.process-line {
  flex-shrink: 0;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, rgba(255,255,255,0.2), var(--red-500), rgba(255,255,255,0.2));
  margin-top: 88px;
}

/* ── TECH STACK ──────────────────────────────── */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  min-width: 100px;
  transition: var(--transition);
}
.tech-item:hover {
  border-color: var(--teal-400);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.tech-item i { font-size: 2rem; }
.tech-item span {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-700);
}

/* ── CONTACT CTA ─────────────────────────────── */
.contact-section {
  background: linear-gradient(135deg, var(--teal-900), var(--teal-700));
  position: relative;
  overflow: hidden;
}
.contact-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
}

.contact-box {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.contact-box h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--white);
  margin: 0.5rem 0 0.75rem;
}
.contact-box p {
  color: var(--teal-100);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.contact-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.btn-contact {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 1rem;
  color: var(--white);
  transition: var(--transition);
  min-width: 240px;
}
.btn-contact i { font-size: 2rem; }
.btn-contact-text { text-align: left; }
.btn-contact-text span { display: block; font-weight: 700; font-size: 1rem; }
.btn-contact-text small { font-size: 0.8rem; opacity: 0.8; }

.btn-contact--line {
  background: #00b900;
}
.btn-contact--line:hover {
  background: #009900;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,185,0,0.4);
}

.btn-contact--messenger {
  background: #0084ff;
}
.btn-contact--messenger:hover {
  background: #006ddb;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,132,255,0.4);
}

.contact-info-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--teal-100);
  font-size: 0.92rem;
}
.contact-info-row a {
  color: var(--teal-100);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}
.contact-info-row a:hover { color: var(--white); }
.contact-sep { opacity: 0.3; }

/* ── FOOTER ──────────────────────────────────── */
.footer {
  background: var(--teal-900);
  padding-top: 3.5rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand img { margin-bottom: 0.75rem; }
.footer-brand p {
  font-size: 0.9rem;
  color: var(--teal-100);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}
.footer-social a {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal-100);
  font-size: 0.95rem;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--red-500);
  color: var(--white);
}

.footer-links h5 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}
.footer-links ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a {
  font-size: 0.9rem;
  color: var(--teal-100);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.footer-links a:hover { color: var(--white); padding-left: 4px; }

.footer-bottom {
  padding: 1.25rem 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}

/* ── FLOATING CHAT BUTTONS ───────────────────── */
.float-chat {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  z-index: 999;
}

.float-label {
  background: var(--teal-800);
  color: var(--teal-100);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  opacity: 0.8;
}

.float-btn {
  position: relative;
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.float-btn::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid currentColor;
  opacity: 0;
  animation: ripple 2s infinite;
}
@keyframes ripple {
  0%   { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.4); opacity: 0; }
}

.float-btn--line     { background: #00b900; }
.float-btn--messenger{ background: #0084ff; }

.float-btn:hover { transform: scale(1.1); }

.float-tooltip {
  position: absolute;
  right: calc(100% + 10px);
  background: var(--gray-900);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.float-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--gray-900);
}
.float-btn:hover .float-tooltip { opacity: 1; }

/* ── BACK TO TOP ─────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  width: 42px; height: 42px;
  background: var(--teal-600);
  color: var(--white);
  border: none;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--teal-500);
  transform: translateY(-3px);
}

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 992px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .pf-grid       { grid-template-columns: repeat(2, 1fr); }
  .process-steps { flex-direction: column; align-items: center; }
  .process-line {
    width: 2px;
    height: 40px;
    margin-top: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.2), var(--red-500), rgba(255,255,255,0.2));
  }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .section { padding: 4rem 0; }

  .nav-toggle { display: flex; }

  .nav-menu {
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: var(--teal-900);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.5rem 1.5rem;
    gap: 0.25rem;
    transform: translateY(-120%);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
    border-top: 1px solid rgba(255,255,255,0.08);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-link { width: 100%; padding: 0.6rem 0.5rem; }
  .nav-cta  { margin-left: 0; margin-top: 0.5rem; }

  .hero-content { padding: 4rem 1.5rem 5rem; }
  .hero-stats { gap: 1.25rem; }
  .stat-divider { height: 30px; }

  .services-grid { grid-template-columns: 1fr; }
  .pf-grid       { grid-template-columns: 1fr; }
  .why-grid      { grid-template-columns: 1fr; }

  .contact-buttons { flex-direction: column; align-items: center; }
  .btn-contact { width: 100%; max-width: 300px; justify-content: center; }

  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }
  .hero-stats { justify-content: center; }
}