/* ==========================================================================
   CrystalCool - Stylesheet
   Font: Poppins | Colors: flat, no gradients
   ========================================================================== */

:root {
  /* Brand colors (flat, no gradients) */
  --color-primary: #0B3D5C;      /* deep ice-blue: trust, cold, stability */
  --color-primary-dark: #072A40;
  --color-secondary: #0EA5C4;    /* ice-cyan: fresh, clean, water */
  --color-accent: #e8e5e5;       /* warm amber: CTAs, energy, visibility */
  --color-accent-dark: #2d2b28;

  --color-ink: #0F172A;          /* body text */
  --color-muted: #5B6B7A;        /* secondary text */
  --color-line: #E3E9EE;         /* borders */
  --color-bg: #FFFFFF;
  --color-bg-soft: #F4F8FA;      /* light ice-tinted background */
  --color-white: #FFFFFF;

  --font-main: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 2px 10px rgba(11, 61, 92, 0.08);
  --shadow-md: 0 14px 34px rgba(11, 61, 92, 0.14);
  --shadow-lg: 0 24px 60px rgba(11, 61, 92, 0.20);

  --nav-height: 76px;
  --container: 1180px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { height: 100%; }
body {
  font-family: var(--font-main);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  animation: pageFadeIn 0.6s var(--ease);
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: 1rem; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; color: var(--color-primary); }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p { color: var(--color-muted); }

@keyframes pageFadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ---------- Preloader ---------- */
.preloader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 18px;
  transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}
.preloader.hide { opacity: 0; visibility: hidden; pointer-events: none; }
.ice-loader {
  width: 54px; height: 54px;
  border: 5px solid rgba(255,255,255,0.25);
  border-top-color: var(--color-secondary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
.preloader span {
  color: var(--color-white);
  font-weight: 600;
  letter-spacing: 0.06em;
  font-size: 0.9rem;
  text-transform: uppercase;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600; font-size: 0.98rem;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
  white-space: nowrap;
}
.btn-primary { background: var(--color-accent); color: var(--color-primary-dark); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--color-muted); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--color-white); border: 2px solid rgba(255,255,255,0.75); }
.btn-outline:hover { background: rgba(255,255,255,0.12); transform: translateY(-3px); }
.btn-solid { background: var(--color-primary); color: var(--color-white); }
.btn-solid:hover { background: var(--color-primary-dark); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn-whatsapp { background: #22a559; color: var(--color-white); }
.btn-whatsapp:hover { background: #1b8a48; transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  height: var(--nav-height);
  display: flex; align-items: center;
  background: transparent;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), height 0.3s var(--ease);
}
.navbar.scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  height: 66px;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.25rem; color: var(--color-white); transition: color 0.3s var(--ease); }
.navbar.scrolled .brand { color: var(--color-primary); }
.brand i { color: var(--color-secondary); font-size: 1.4rem; }

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  color: var(--color-white); font-weight: 500; font-size: 0.97rem;
  position: relative; padding: 6px 0; transition: color 0.3s var(--ease);
}
.navbar.scrolled .nav-links a { color: var(--color-ink); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: var(--color-accent); transition: width 0.3s var(--ease);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { font-weight: 600; }

.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-cta .btn { padding: 10px 22px; font-size: 0.92rem; }

.hamburger {
  display: none; flex-direction: column; gap: 5px; width: 30px; z-index: 1001;
}
.hamburger span { display: block; height: 2px; width: 100%; background: var(--color-white); transition: all 0.3s var(--ease); }
.navbar.scrolled .hamburger span { background: var(--color-primary); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero (video background) ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
  background: var(--color-primary-dark);
}
.hero-media { position: absolute; inset: 0; width: 100%; height: 100%; overflow: hidden; }
.hero-media video, .hero-media img.hero-fallback {
  position: absolute; top: 50%; left: 50%; min-width: 100%; min-height: 100%;
  width: auto; height: auto; transform: translate(-50%, -50%);
  object-fit: cover; will-change: transform;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: rgba(7, 42, 64, 0.62);
}
.hero-content { position: relative; z-index: 2; color: var(--color-white); max-width: 720px; padding-top: var(--nav-height); }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.25);
  padding: 8px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 600;
  color: var(--color-white); margin-bottom: 20px;
}
.hero-eyebrow i { color: var(--color-secondary); }
.hero-content h1 { color: var(--color-white); margin-bottom: 18px; }
.hero-content h1 span { color: var(--color-secondary); }
.hero-content p.lead { color: rgba(255,255,255,0.88); font-size: 1.1rem; max-width: 560px; margin-bottom: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 44px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 28px; }
.hero-badges .badge { display: flex; align-items: center; gap: 10px; color: var(--color-white); font-size: 0.9rem; font-weight: 500; }
.hero-badges .badge i { color: var(--color-secondary); font-size: 1.1rem; }

.scroll-cue {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  color: var(--color-white); z-index: 2; text-align: center; font-size: 0.78rem;
  letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.8;
}
.scroll-cue i { display: block; margin-top: 8px; animation: bounce 1.8s infinite; }
@keyframes bounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

/* ---------- Sections ---------- */
section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-header { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section-tag {
  display: inline-block; color: var(--color-accent-dark); background: #FFF3DF;
  font-weight: 700; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 6px 16px; border-radius: 50px; margin-bottom: 16px;
}
.section-header p { margin-top: 14px; }
.bg-soft { background: var(--color-bg-soft); }
.bg-primary { background: var(--color-primary); }
.bg-primary h2, .bg-primary .section-tag { color: var(--color-white); }
.bg-primary p { color: rgba(255,255,255,0.78); }

/* ---------- 3D scroll-reveal engine ---------- */
.scene { perspective: 1400px; }
.reveal-3d {
  opacity: 0;
  transform: translateY(50px) rotateX(12deg);
  transform-origin: top center;
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}
.reveal-3d.visible { opacity: 1; transform: translateY(0) rotateX(0deg); }
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Stagger helper */
.stagger > * { transition-delay: calc(var(--i, 0) * 0.09s); }

/* ---------- Stats ---------- */
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.stat { text-align: center; color: var(--color-white); }
.stat .num { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: var(--color-secondary); }
.stat .label { font-size: 0.92rem; color: rgba(255,255,255,0.78); margin-top: 6px; }

/* ---------- Cards: "Who We Serve" ---------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

.audience-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  height: 320px; box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.audience-card:hover { transform: translateY(-8px) scale(1.015); box-shadow: var(--shadow-lg); }
.audience-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.audience-card:hover img { transform: scale(1.08); }
.audience-card .tint { position: absolute; inset: 0; background: rgba(7, 42, 64, 0.55); }
.audience-card .info {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 22px;
  color: var(--color-white);
}
.audience-card .info i { color: var(--color-secondary); font-size: 1.4rem; margin-bottom: 8px; display: block; }
.audience-card .info h3 { color: var(--color-white); margin-bottom: 4px; }
.audience-card .info p { color: rgba(255,255,255,0.85); font-size: 0.88rem; margin: 0; }

/* ---------- Feature / service cards ---------- */
.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature-icon {
  width: 58px; height: 58px; border-radius: 16px;
  background: var(--color-bg-soft);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.feature-icon i { font-size: 1.5rem; color: var(--color-primary); }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 0.94rem; margin: 0; }

/* ---------- Service detail cards (services page) ---------- */
.service-card {
  background: var(--color-white); border-radius: var(--radius-lg);
  border: 1px solid var(--color-line); padding: 36px;
  display: flex; flex-direction: column; gap: 16px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
  position: relative;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.service-card .feature-icon { background: var(--color-primary); }
.service-card .feature-icon i { color: var(--color-white); }
.service-card h3 { font-size: 1.35rem; }
.service-tag {
  align-self: flex-start;
  font-size: 0.76rem; font-weight: 700; letter-spacing: 0.04em;
  background: var(--color-bg-soft); color: var(--color-primary);
  padding: 5px 14px; border-radius: 50px; text-transform: uppercase;
}
.service-card ul { margin-top: 6px; display: flex; flex-direction: column; gap: 8px; }
.service-card ul li { font-size: 0.92rem; color: var(--color-muted); display: flex; align-items: flex-start; gap: 10px; }
.service-card ul li i { color: var(--color-secondary); margin-top: 4px; font-size: 0.85rem; }

/* ---------- Process steps ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; counter-reset: step; }
.process-step { text-align: center; position: relative; }
.process-step .step-num {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--color-primary); color: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.2rem; margin: 0 auto 18px;
}
.process-step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.process-step p { font-size: 0.9rem; }

/* ---------- Testimonials ---------- */
.testimonial-card {
  background: var(--color-white); border: 1px solid var(--color-line);
  border-radius: var(--radius-md); padding: 30px; position: relative;
}
.testimonial-card i.quote-icon { color: var(--color-accent); font-size: 1.6rem; margin-bottom: 14px; display: block; }
.testimonial-card p.quote { color: var(--color-ink); font-style: italic; margin-bottom: 18px; }
.testimonial-card .author { display: flex; align-items: center; gap: 12px; }
.testimonial-card .avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--color-secondary); color: var(--color-white);
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.testimonial-card .name { font-weight: 600; font-size: 0.92rem; color: var(--color-ink); }
.testimonial-card .role { font-size: 0.8rem; color: var(--color-muted); }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--color-primary); border-radius: var(--radius-lg);
  padding: 56px; display: flex; align-items: center; justify-content: space-between;
  gap: 30px; flex-wrap: wrap;
}
.cta-banner h2 { color: var(--color-white); margin-bottom: 8px; }
.cta-banner p { color: rgba(255,255,255,0.8); margin: 0; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 50px; align-items: start; }
.contact-info-card {
  display: flex; gap: 16px; padding: 22px; border-radius: var(--radius-md);
  background: var(--color-bg-soft); margin-bottom: 16px;
  transition: transform 0.3s var(--ease);
}
.contact-info-card:hover { transform: translateX(6px); }
.contact-info-card .feature-icon { flex-shrink: 0; width: 48px; height: 48px; margin-bottom: 0; background: var(--color-white); }
.contact-info-card .feature-icon i { font-size: 1.2rem; }
.contact-info-card h3 { font-size: 1rem; margin-bottom: 4px; }
.contact-info-card p { font-size: 0.9rem; margin: 0; }

.contact-form {
  background: var(--color-white); border: 1px solid var(--color-line);
  border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--color-ink); margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--color-line);
  border-radius: var(--radius-sm); color: var(--color-ink); background: var(--color-bg-soft);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--color-secondary); background: var(--color-white);
}
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 0.82rem; color: var(--color-muted); margin-top: 14px; display: flex; gap: 8px; align-items: flex-start; }
.form-note i { color: var(--color-secondary); margin-top: 3px; }
.form-success {
  display: none; align-items: center; gap: 10px; background: #E9F9EF; color: #1B8A48;
  padding: 14px 18px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.92rem; margin-top: 16px;
}
.form-success.show { display: flex; }

.map-wrap { border-radius: var(--radius-lg); overflow: hidden; margin-top: 40px; box-shadow: var(--shadow-sm); }
.map-wrap iframe { width: 100%; height: 340px; border: 0; display: block; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-primary-dark); color: rgba(255,255,255,0.75); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 46px; }
.footer-brand .brand { color: var(--color-white); margin-bottom: 14px; }
.footer-brand p { color: rgba(255,255,255,0.65); font-size: 0.9rem; max-width: 280px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center; transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.footer-social a:hover { background: var(--color-secondary); transform: translateY(-3px); }
.footer-col h4 { color: var(--color-white); font-size: 0.95rem; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.68); transition: color 0.25s var(--ease); }
.footer-col ul li a:hover { color: var(--color-secondary); }
.footer-col ul li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; }
.footer-col ul li i { color: var(--color-secondary); margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding: 22px 0;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
  font-size: 0.84rem; color: rgba(255,255,255,0.55);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--color-secondary); }

/* ---------- WhatsApp float button ---------- */
.wa-float {
  position: fixed; bottom: 26px; right: 26px; z-index: 900;
  width: 58px; height: 58px; border-radius: 50%; background: #22a559;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-white); font-size: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s var(--ease);
}
.wa-float:hover { transform: scale(1.08); }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; bottom: 26px; left: 26px; z-index: 900;
  width: 44px; height: 44px; border-radius: 50%; background: var(--color-primary);
  color: var(--color-white); display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all 0.3s var(--ease);
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; row-gap: 34px; }
}

@media (max-width: 768px) {
  section { padding: 68px 0; }
  .nav-links { position: fixed; top: 0; right: 0; height: 100vh; width: min(78vw, 320px);
    background: var(--color-white); flex-direction: column; justify-content: center; align-items: flex-start;
    padding: 40px; gap: 26px; transform: translateX(100%); transition: transform 0.4s var(--ease);
    box-shadow: -10px 0 40px rgba(0,0,0,0.12);
  }
  .nav-links.active { transform: translateX(0); }
  .nav-links a { color: var(--color-ink); font-size: 1.05rem; }
  .nav-cta .btn-outline { display: none; }
  .hamburger { display: flex; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-badges { gap: 18px 24px; }
  .grid-4, .grid-3, .grid-2, .process { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-banner { flex-direction: column; text-align: center; padding: 40px 26px; }
  .form-row { grid-template-columns: 1fr; }
  .wa-float { width: 52px; height: 52px; font-size: 1.3rem; bottom: 18px; right: 18px; }
  .to-top { bottom: 18px; left: 18px; }
}