/* ==========================================================================
   THE BINOG — Global Trade Solutions
   Design system: control-room minimalism. Deep indigo-navy, brass gold,
   one desaturated signal-blue. Editorial serif for voice, mono for data.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,600;0,9..144,900;1,9..144,400;1,9..144,600&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  /* -- surfaces -- */
  --ink:        #05070c;
  --ink-2:      #080b13;
  --navy:       #0b1626;
  --navy-2:     #101f36;
  --navy-3:     #16283f;
  --line:       rgba(200,164,92,.16);
  --line-bright:rgba(200,164,92,.38);

  /* -- brand -- */
  --gold:       #c8a45c;
  --gold-bright:#e8c785;
  --gold-dim:   #8a7141;
  --signal:     #5f8ab8;      /* inbound / data-in accent, desaturated blue */

  /* -- type ink -- */
  --paper:      #eef1f6;
  --paper-dim:  #c7ceda;
  --mist:       #7d8ba3;
  --mist-dim:   #4d5972;

  /* -- type families -- */
  --f-display: 'Fraunces', 'Iowan Old Style', serif;
  --f-body:    'Inter', -apple-system, sans-serif;
  --f-mono:    'JetBrains Mono', ui-monospace, monospace;

  --radius-s: 4px;
  --radius-m: 10px;
  --radius-l: 18px;

  --ease-out: cubic-bezier(.16,1,.3,1);
  --ease-inout: cubic-bezier(.65,0,.35,1);
}

*, *::before, *::after{ box-sizing: border-box; margin:0; padding:0; }

html{ scroll-behavior: smooth; }

body{
  background: var(--ink);
  color: var(--paper);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg{ display:block; max-width:100%; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; }
button{ font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select{ font: inherit; color: inherit; }

::selection{ background: var(--gold-dim); color: var(--paper); }

:focus-visible{
  outline: 1.5px solid var(--gold-bright);
  outline-offset: 3px;
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

.container{
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ambient background texture: faint drifting graticule */
.grain{
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 3px, rgba(200,164,92,.012) 3px, rgba(200,164,92,.012) 4px);
  mix-blend-mode: screen;
}

/* ==========================================================================
   NAV
   ========================================================================== */
.nav{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 40px;
  background: linear-gradient(180deg, rgba(5,7,12,.85) 0%, rgba(5,7,12,0) 100%);
  transition: padding .4s var(--ease-out), background .4s var(--ease-out);
}
.nav.is-scrolled{
  padding: 16px 40px;
  background: rgba(5,7,12,.86);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}

.brand{
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark{ height: 32px; width: auto; flex-shrink: 0; display: block; }
.brand-word{
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .28em;
  color: var(--paper);
}
.brand-word em{ font-style: normal; color: var(--gold); }

.nav-links{
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-links a{
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
  position: relative;
  padding-bottom: 4px;
  transition: color .3s;
}
.nav-links a::after{
  content:'';
  position: absolute;
  left:0; right:100%; bottom:0;
  height: 1px;
  background: var(--gold);
  transition: right .35s var(--ease-out);
}
.nav-links a:hover, .nav-links a.is-active{ color: var(--paper); }
.nav-links a:hover::after, .nav-links a.is-active::after{ right: 0; }

.nav-cta{
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--gold);
  padding: 10px 18px;
  border-radius: 999px;
  transition: background .25s, transform .25s;
}
.nav-cta:hover{ background: var(--gold-bright); transform: translateY(-1px); }

/* ---- language switch ---- */
.lang-switch{ position: relative; }
.lang-trigger{
  display:flex; align-items:center; gap:7px;
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--mist); border: 1px solid var(--line); border-radius: 999px;
  padding: 9px 14px; background: rgba(200,164,92,.03);
  transition: border-color .25s, color .25s, background .25s;
}
.lang-trigger:hover, .lang-switch.is-open .lang-trigger{ color: var(--paper); border-color: var(--gold-dim); background: rgba(200,164,92,.08); }
.lang-globe{ width:14px; height:14px; flex-shrink:0; }
.lang-code{ min-width: 1.4em; text-align:center; }
.lang-caret{ width:8px; height:8px; opacity:.55; transition: transform .25s; flex-shrink:0; }
.lang-switch.is-open .lang-caret{ transform: rotate(180deg); }

.lang-menu{
  position:absolute; top: calc(100% + 10px); right:0;
  min-width: 172px;
  background: linear-gradient(160deg, rgba(22,40,63,.92), rgba(11,22,38,.97));
  border: 1px solid var(--line); border-radius: var(--radius-m);
  backdrop-filter: blur(20px) saturate(140%); -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow: 0 30px 70px -25px rgba(0,0,0,.7);
  padding: 6px; display:flex; flex-direction:column; gap:1px;
  opacity:0; transform: translateY(-6px); pointer-events:none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 200;
}
.lang-switch.is-open .lang-menu{ opacity:1; transform:none; pointer-events:auto; }
.lang-menu button{
  display:flex; align-items:center; justify-content:space-between; gap: 16px;
  width:100%; text-align:left; padding: 10px 12px; border-radius: var(--radius-s);
  font-family: var(--f-body); font-size: 13.5px; color: var(--paper-dim);
  transition: background .2s, color .2s;
}
.lang-menu button:hover{ background: rgba(200,164,92,.1); color: var(--paper); }
.lang-menu button.is-active{ color: var(--gold); }
.lang-menu button .lc{ font-family: var(--f-mono); font-size:10px; letter-spacing:.1em; color: var(--mist-dim); }
.lang-menu button.is-active .lc{ color: var(--gold-dim); }

.mobile-lang{ display:flex; flex-wrap:wrap; gap:10px; margin-top: 6px; }
.mobile-lang button{
  font-family: var(--f-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase;
  color: var(--mist); border:1px solid var(--line); border-radius:999px; padding:9px 16px;
  transition: color .2s, border-color .2s;
}
.mobile-lang button.is-active{ color: var(--gold); border-color: var(--gold-dim); }

@media (max-width: 768px){ .lang-switch{ display:none; } }

/* ---- RTL (Arabic) ---- */
html[dir="rtl"] .lang-menu{ right:auto; left:0; }
html[dir="rtl"] .lang-menu button{ text-align:right; }
html[dir="rtl"] .eyebrow::before{ order:1; }
html[dir="rtl"] .nav-links a::after{ left:auto; right:0; }
html[dir="rtl"] .btn-ghost svg, html[dir="rtl"] .btn-solid svg{ transform: scaleX(-1); }
html[dir="rtl"] .btn-ghost:hover svg{ transform: scaleX(-1) translateX(4px); }
body.lang-ar{ font-family: 'Noto Sans Arabic', var(--f-body); }
body.lang-ar .hero-title, body.lang-ar h1, body.lang-ar h2, body.lang-ar .brand-word{ font-family: 'Noto Naskh Arabic', var(--f-display); }
body.lang-zh{ font-family: 'Noto Sans SC', var(--f-body); }
body.lang-zh h1, body.lang-zh h2{ font-family: 'Noto Serif SC', var(--f-display); }

.nav-burger{ display:none; width: 28px; height: 20px; position: relative; }
.nav-burger span{
  position:absolute; left:0; right:0; height:1px; background: var(--paper);
  transition: transform .3s, opacity .3s;
}
.nav-burger span:nth-child(1){ top:0; }
.nav-burger span:nth-child(2){ top:9px; }
.nav-burger span:nth-child(3){ top:18px; }
.nav-burger.is-open span:nth-child(1){ transform: translateY(9px) rotate(45deg); }
.nav-burger.is-open span:nth-child(2){ opacity:0; }
.nav-burger.is-open span:nth-child(3){ transform: translateY(-9px) rotate(-45deg); }

.mobile-panel{
  position: fixed; inset: 0; z-index: 90;
  background: var(--ink);
  display: flex; flex-direction: column;
  align-items: flex-start; justify-content: center;
  gap: 26px; padding: 40px;
  transform: translateY(-100%);
  transition: transform .5s var(--ease-inout);
}
.mobile-panel.is-open{ transform: translateY(0); }
.mobile-panel a{
  font-family: var(--f-display);
  font-size: 34px;
  font-weight: 600;
  color: var(--paper-dim);
}
.mobile-panel a:hover{ color: var(--gold); }
.mobile-panel .mob-contact{
  margin-top: 20px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

/* ==========================================================================
   BUTTONS / SHARED COMPONENTS
   ========================================================================== */
.btn-ghost{
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--paper);
  border: 1px solid var(--line-bright);
  padding: 16px 30px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(200,164,92,.04);
  transition: background .3s, border-color .3s, letter-spacing .3s;
}
.btn-ghost:hover{
  background: rgba(200,164,92,.1);
  border-color: var(--gold);
  letter-spacing: .26em;
}
.btn-ghost svg{ width: 14px; height: 14px; transition: transform .3s var(--ease-out); }
.btn-ghost:hover svg{ transform: translateX(4px); }

.btn-solid{
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--gold);
  padding: 16px 30px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background .3s, transform .3s;
}
.btn-solid:hover{ background: var(--gold-bright); transform: translateY(-2px); }

.eyebrow{
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before{
  content:'';
  width: 26px; height: 1px;
  background: var(--gold);
}

.glass{
  background: linear-gradient(160deg, rgba(22,40,63,.55), rgba(11,22,38,.72));
  border: 1px solid var(--line);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.7);
}

/* ==========================================================================
   FOOTER (shared)
   ========================================================================== */
.site-footer{
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  background: var(--ink-2);
  padding: 70px 0 30px;
}
.footer-top{
  display: grid;
  grid-template-columns: 1.3fr .8fr .8fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
}
.footer-brand .brand{ margin-bottom: 18px; }
.footer-brand p{
  color: var(--mist);
  font-size: 14px;
  max-width: 320px;
  line-height: 1.7;
}
.footer-col h4{
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 18px;
}
.footer-col a, .footer-col span{
  display: block;
  color: var(--mist);
  font-size: 14px;
  margin-bottom: 12px;
  transition: color .25s;
}
.footer-col a:hover{ color: var(--gold-bright); }
.footer-social{
  display: flex;
  gap: 14px;
  margin-top: 6px;
}
.footer-social a{
  width: 38px; height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: border-color .25s, background .25s, transform .25s;
}
.footer-social a svg{ width: 16px; height: 16px; stroke: var(--paper-dim); }
.footer-social a:hover{ border-color: var(--gold); background: rgba(200,164,92,.08); transform: translateY(-2px); }
.footer-bottom{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--mist-dim);
}

/* ==========================================================================
   RESPONSIVE — shared shell
   ========================================================================== */
@media (max-width: 1024px){
  .container{ padding: 0 28px; }
  .nav{ padding: 22px 28px; }
  .footer-top{ grid-template-columns: 1fr 1fr; gap: 36px 24px; }
}

@media (max-width: 768px){
  .nav-links, .nav-cta{ display:none; }
  .nav-burger{ display:block; }
  .footer-top{ grid-template-columns: 1fr; gap: 32px; }
}

/* ==========================================================================
   REVEAL-ON-SCROLL UTILITY
   ========================================================================== */
[data-reveal]{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
}
[data-reveal].is-visible{ opacity: 1; transform: translateY(0); }
[data-reveal="fade"]{ transform: none; }
[data-reveal].is-visible ~ [data-reveal]{ transition-delay: .08s; }
@media (prefers-reduced-motion: reduce){
  [data-reveal]{ opacity:1; transform:none; }
}