/* =========================================================
   Aquafiltrec — styles.css
   Direction: luxury + innovation + trust (water treatment)
   Fonts (local):
   - Inter (WOFF2) from: /assets/fonts/Inter-4.1/extras/woff-hinted/
   - Playfair Display (TTF) from: /assets/fonts/playfair-display/
   ========================================================= */

/* ---- Font loading (local files) ---- */
@font-face{
  font-family:"Inter";
  src:url("../../assets/fonts/Inter-4.1/extras/woff-hinted/Inter-Regular.woff2") format("woff2");
  font-weight:400;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"Inter";
  src:url("../../assets/fonts/Inter-4.1/extras/woff-hinted/Inter-Italic.woff2") format("woff2");
  font-weight:400;
  font-style:italic;
  font-display:swap;
}
@font-face{
  font-family:"Inter";
  src:url("../../assets/fonts/Inter-4.1/extras/woff-hinted/Inter-Medium.woff2") format("woff2");
  font-weight:500;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"Inter";
  src:url("../../assets/fonts/Inter-4.1/extras/woff-hinted/Inter-SemiBold.woff2") format("woff2");
  font-weight:600;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"Inter";
  src:url("../../assets/fonts/Inter-4.1/extras/woff-hinted/Inter-Bold.woff2") format("woff2");
  font-weight:700;
  font-style:normal;
  font-display:swap;
}

@font-face{
  font-family:"Playfair Display";
  src:url("../../assets/fonts/playfair-display/PlayfairDisplay-Regular.ttf") format("truetype");
  font-weight:400;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"Playfair Display";
  src:url("../../assets/fonts/playfair-display/PlayfairDisplay-Italic.ttf") format("truetype");
  font-weight:400;
  font-style:italic;
  font-display:swap;
}
@font-face{
  font-family:"Playfair Display";
  src:url("../../assets/fonts/playfair-display/PlayfairDisplay-Bold.ttf") format("truetype");
  font-weight:700;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"Playfair Display";
  src:url("../../assets/fonts/playfair-display/PlayfairDisplay-BoldItalic.ttf") format("truetype");
  font-weight:700;
  font-style:italic;
  font-display:swap;
}
@font-face{
  font-family:"Playfair Display";
  src:url("../../assets/fonts/playfair-display/PlayfairDisplay-Black.ttf") format("truetype");
  font-weight:900;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"Playfair Display";
  src:url("../../assets/fonts/playfair-display/PlayfairDisplay-BlackItalic.ttf") format("truetype");
  font-weight:900;
  font-style:italic;
  font-display:swap;
}

/* ---- Reset ---- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
:focus-visible{outline:3px solid rgba(18,109,189,.35); outline-offset:3px}

/* ---- Design tokens ---- */
:root{
  /* Core palette (water blues + luxury navy + silver) */
  --ink: #0b1622;          /* deep navy */
  --ink-2: #122234;        /* softer navy */
  --muted: #5a6b7c;        /* slate text */
  --muted-2: #7a8a99;

  --brand: #1b78c6;        /* primary blue */
  --brand-2: #0f4e8a;      /* deep blue */
  --aqua: #4fb0e8;         /* highlight aqua */

  --bg: #f7fbff;           /* clean water white */
  --surface: #ffffff;
  --surface-2: #f1f6fb;    /* soft panel */
  --line: rgba(17, 34, 52, .10);

  /* Luxury accent (silver) */
  --silver: #c7d0da;
  --silver-2:#e6edf5;

  /* Typography */
  --font-ui: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --font-brand: "Playfair Display", ui-serif, Georgia, "Times New Roman", serif;

  /* Sizing */
  --container: 1120px;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;

  --shadow-sm: 0 10px 25px rgba(12, 28, 45, .07);
  --shadow-md: 0 18px 40px rgba(12, 28, 45, .12);

  --ease: cubic-bezier(.2,.8,.2,1);
}

/* ---- Base ---- */
body{
  font-family: var(--font-ui);
  color: var(--ink);
  background:
    radial-gradient(900px 600px at 80% -10%, rgba(79,176,232,.22), transparent 60%),
    radial-gradient(900px 600px at 10% 10%, rgba(27,120,198,.10), transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, #ffffff 45%, var(--bg) 100%);
  line-height: 1.55;
}

::selection{background: rgba(79,176,232,.25)}
p{margin:0 0 14px}
small{color:var(--muted)}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}

h1,h2,h3,h4{
  margin:0 0 10px;
  font-family: var(--font-brand);
  letter-spacing: .2px;
  color: var(--ink);
}
h1{font-size: clamp(36px, 4.6vw, 58px); line-height:1.05}
h2{font-size: clamp(28px, 3.2vw, 40px); line-height:1.15}
h3{font-size: clamp(20px, 2.2vw, 26px); line-height:1.2}
h4{font-size: 18px; line-height:1.25}

.lead{
  font-size: clamp(16px, 1.5vw, 18px);
  color: var(--muted);
  max-width: 62ch;
}

/* ---- Layout helpers ---- */
.container{
  width: min(var(--container), calc(100% - 40px));
  margin-inline: auto;
}
.section{
  padding: 72px 0;
}
.grid{
  display:grid;
  gap: 22px;
}
.grid-2{grid-template-columns: repeat(2, minmax(0, 1fr))}
.grid-3{grid-template-columns: repeat(3, minmax(0, 1fr))}
@media (max-width: 900px){
  .section{padding: 56px 0}
  .grid-2,.grid-3{grid-template-columns: 1fr}
}

/* ---- Header / Nav ---- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background: rgba(255,255,255,.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 18px;
  padding: 14px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap: 12px;
  min-width: 200px;
}
.brand img{
  width: 44px;
  height: 44px;
  object-fit:contain;
  filter: drop-shadow(0 6px 14px rgba(12,28,45,.14));
}
.brand .name{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}
.brand .name strong{
  font-family: var(--font-brand);
  font-weight: 700;
  letter-spacing:.6px;
}
.brand .name span{
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .22em;
  text-transform: uppercase;
}

.nav{
  display:flex;
  align-items:center;
  gap: 18px;
}
.nav a{
  font-weight: 500;
  font-size: 14px;
  color: var(--ink-2);
  padding: 10px 10px;
  border-radius: 12px;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.nav a:hover{
  background: rgba(27,120,198,.08);
  color: var(--brand-2);
}

/* Mobile nav toggle (if you add it in HTML) */
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.8);
  border-radius: 14px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  margin:4px auto;
  background: var(--ink-2);
  border-radius: 2px;
}
@media (max-width: 900px){
  .nav-toggle{display:inline-grid; place-items:center}
  .nav{
    display:none;
    position:absolute;
    left:0; right:0;
    top: 70px;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border-bottom:1px solid var(--line);
    padding: 10px 20px 18px;
    flex-direction:column;
    align-items:flex-start;
    gap: 6px;
  }
  .site-header.is-open .nav{display:flex}
  .nav a{width:100%}
}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  cursor:pointer;
  transition: transform .15s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
  user-select:none;
}
.btn:active{transform: translateY(1px)}

.btn-primary{
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  color: #fff;
  box-shadow: 0 14px 28px rgba(15,78,138,.22);
}
.btn-primary:hover{
  box-shadow: 0 18px 36px rgba(15,78,138,.28);
}

.btn-secondary{
  background: rgba(255,255,255,.8);
  border-color: rgba(27,120,198,.18);
  color: var(--brand-2);
}
.btn-secondary:hover{
  background: rgba(27,120,198,.06);
  border-color: rgba(27,120,198,.28);
}

.btn-ghost{
  background: transparent;
  border-color: rgba(17,34,52,.16);
  color: var(--ink-2);
}
.btn-ghost:hover{
  background: rgba(17,34,52,.04);
}

/* ---- Hero ---- */
.hero{
  padding: 84px 0 48px;
}
.hero .wrap{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
  align-items:center;
}
.hero-card{
  background: linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.72));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  padding: 28px;
  position:relative;
  overflow:hidden;
}
.hero-card::before{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    radial-gradient(540px 280px at 10% 0%, rgba(79,176,232,.28), transparent 65%),
    radial-gradient(520px 320px at 90% 0%, rgba(27,120,198,.16), transparent 62%);
  pointer-events:none;
}
.hero-card > *{position:relative}

.kicker{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(79,176,232,.12);
  border: 1px solid rgba(79,176,232,.18);
  color: var(--brand-2);
  font-weight: 600;
  font-size: 13px;
  width: fit-content;
}
.kicker .dot{
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--aqua);
  box-shadow: 0 0 0 6px rgba(79,176,232,.18);
}

.hero-actions{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.hero-aside{
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255,255,255,.7), rgba(241,246,251,.9));
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.hero-aside .stat{
  display:flex;
  gap: 12px;
  padding: 14px 12px;
  border-radius: 16px;
  background: rgba(255,255,255,.75);
  border: 1px solid rgba(17,34,52,.08);
  margin-bottom: 12px;
}
.hero-aside .stat:last-child{margin-bottom:0}
.hero-aside .icon{
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  background: rgba(27,120,198,.10);
  border: 1px solid rgba(27,120,198,.16);
  color: var(--brand-2);
  font-weight: 700;
}
.hero-aside .stat strong{
  display:block;
  font-size: 14px;
  line-height:1.2;
}
.hero-aside .stat span{
  display:block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

@media (max-width: 900px){
  .hero{padding: 64px 0 36px}
  .hero .wrap{grid-template-columns:1fr}
}

/* ---- Cards ---- */
.card{
  background: rgba(255,255,255,.88);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}
.card .title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  margin-bottom: 10px;
}
.badge{
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-2);
  background: rgba(27,120,198,.10);
  border: 1px solid rgba(27,120,198,.18);
  padding: 6px 10px;
  border-radius: 999px;
}

/* ---- Section heading block ---- */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 16px;
  margin-bottom: 22px;
}
.section-head p{
  margin:0;
  max-width: 70ch;
  color: var(--muted);
}
@media (max-width: 900px){
  .section-head{flex-direction:column; align-items:flex-start}
}

/* ---- Feature list ---- */
.features{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.feature{
  padding: 18px 18px 16px;
  border-radius: var(--r-md);
  border: 1px solid rgba(17,34,52,.10);
  background: rgba(255,255,255,.78);
  box-shadow: 0 10px 24px rgba(12,28,45,.06);
  position:relative;
  overflow:hidden;
  transition: transform .18s var(--ease), box-shadow .2s var(--ease);
}
.feature::before{
  content:"";
  position:absolute;
  inset:-1px;
  background:
    radial-gradient(420px 220px at 10% 0%, rgba(79,176,232,.20), transparent 60%);
  opacity:.65;
  pointer-events:none;
}
.feature > *{position:relative}
.feature:hover{
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(12,28,45,.10);
}
.feature .icon{
  width: 46px;
  height: 46px;
  border-radius: 16px;
  background: rgba(27,120,198,.10);
  border: 1px solid rgba(27,120,198,.18);
  display:grid;
  place-items:center;
  margin-bottom: 10px;
  color: var(--brand-2);
  font-weight: 800;
}
.feature p{color: var(--muted); margin: 0}

@media (max-width: 900px){
  .features{grid-template-columns:1fr}
}

/* ---- Callout (CTA band) ---- */
.callout{
  background: linear-gradient(135deg, rgba(15,78,138,.95), rgba(27,120,198,.92));
  color: #fff;
  border-radius: var(--r-lg);
  padding: 28px;
  position:relative;
  overflow:hidden;
  box-shadow: 0 18px 46px rgba(15,78,138,.22);
}
.callout::before{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    radial-gradient(600px 260px at 20% 0%, rgba(79,176,232,.35), transparent 60%),
    radial-gradient(520px 320px at 90% 30%, rgba(255,255,255,.12), transparent 60%);
  pointer-events:none;
}
.callout > *{position:relative}
.callout h3{color:#fff; margin-bottom: 8px}
.callout p{margin:0 0 14px; color: rgba(255,255,255,.86)}
.callout .btn-secondary{
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.25);
  color:#fff;
}
.callout .btn-secondary:hover{
  background: rgba(255,255,255,.20);
}

/* ---- Forms ---- */
.field{
  display:flex;
  flex-direction:column;
  gap: 8px;
  margin-bottom: 12px;
}
label{
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
}
input, textarea{
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(17,34,52,.14);
  background: rgba(255,255,255,.92);
  outline:none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
textarea{min-height: 120px; resize: vertical}
input:focus, textarea:focus{
  border-color: rgba(27,120,198,.45);
  box-shadow: 0 0 0 4px rgba(27,120,198,.14);
}

/* ---- Footer ---- */
.site-footer{
  padding: 26px 0 34px;
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,.55);
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  align-items:start;
}
.footer-grid p{margin: 8px 0 0; color: var(--muted)}
.footer-links{
  display:flex;
  gap: 12px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.footer-links a{
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(17,34,52,.10);
  background: rgba(255,255,255,.72);
  color: var(--ink-2);
}
.footer-links a:hover{
  border-color: rgba(27,120,198,.22);
  background: rgba(27,120,198,.06);
}
@media (max-width: 900px){
  .footer-grid{grid-template-columns:1fr}
  .footer-links{justify-content:flex-start}
}

/* ---- Utility ---- */
.m-0{margin:0}
.mt-2{margin-top: 12px}
.mt-3{margin-top: 18px}
.mt-4{margin-top: 26px}
.mb-2{margin-bottom: 12px}
.mb-3{margin-bottom: 18px}
.center{text-align:center}
.muted{color: var(--muted)}
.surface{
  background: rgba(255,255,255,.8);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: 22px;
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto !important}
  .btn,.feature{transition:none !important}
}