/* ==========================================================================
   EXPERT INTELLECT — Design System
   Concept: the Indian IP registry. Navy + brass evoke the official seals,
   ledgers and filing stamps of the Patent & Trademark Registry; a rotated
   "stamp" mark and perforated dividers carry that motif through the site.
   ========================================================================== */

:root{
  /* --- Color tokens --- */
  --ink-navy:      #14233F;
  --ink-navy-dark: #0C1728;
  --parchment:     #F2ECDC;
  --parchment-2:   #EAE2CC;
  --paper-white:   #FBF9F3;
  --brass:         #A8842E;
  --brass-light:   #C9A64B;
  --oxblood:       #7A2A2A;
  --oxblood-light: #9C3E3E;
  --ink-text:      #1E2530;
  --slate:         #5B6472;
  --slate-light:   #8590A0;
  --line:          #D8CFB4;
  --line-dark:     rgba(255,255,255,0.14);
  --green-ok:      #3C6E47;

  /* --- Type --- */
  --font-display: "Source Serif 4", "Georgia", serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --radius-sm: 3px;
  --radius-md: 6px;
  --shadow-card: 0 1px 2px rgba(20,35,63,0.06), 0 8px 24px rgba(20,35,63,0.07);
  --shadow-deep: 0 20px 60px rgba(12,23,40,0.35);
}

@font-face{ font-family:'sys'; src:local('sys'); }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--parchment);
  color:var(--ink-text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.15;
  margin:0 0 .5em;
  color:var(--ink-navy);
  letter-spacing:-0.01em;
}
p{ margin:0 0 1em; }
.container{ max-width:1160px; margin:0 auto; padding:0 24px; }
.container-narrow{ max-width:820px; margin:0 auto; padding:0 24px; }

:focus-visible{ outline:3px solid var(--brass); outline-offset:2px; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}

/* --- Eyebrow / label --- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brass);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:20px; height:1px;
  background:var(--brass);
  display:inline-block;
}

/* ==========================================================================
   HEADER / NAV
   ========================================================================== */
.site-header{
  background:var(--ink-navy);
  position:sticky; top:0; z-index:100;
  border-bottom:1px solid var(--line-dark);
}
.header-bar{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 24px;
  max-width:1160px; margin:0 auto;
  gap:24px;
}
.brand{
  display:flex; align-items:center; gap:12px;
  color:var(--paper-white);
}
.brand-mark{
  width:40px; height:40px; border-radius:8px;
  border:1.5px solid var(--brass);
  background:#fff;
  display:flex; align-items:center; justify-content:center;
  overflow:hidden;
  flex:none;
  padding:3px;
}
.brand-mark img{ width:100%; height:100%; object-fit:contain; display:block; }
.brand-name{
  font-family:var(--font-display); font-size:19px; font-weight:600;
  letter-spacing:.01em; color:#fff; line-height:1.1;
}
.brand-sub{
  font-family:var(--font-mono); font-size:10.5px; letter-spacing:.13em;
  color:var(--slate-light); text-transform:uppercase; margin-top:2px;
}

nav.main-nav{ display:flex; }
nav.main-nav > ul{ display:flex; align-items:center; gap:2px; }
nav.main-nav > ul > li{ position:relative; }
nav.main-nav > ul > li > a{
  display:block; padding:10px 14px;
  font-size:14.5px; font-weight:500; color:#D9DEE8;
  border-radius:var(--radius-sm);
  transition:color .15s, background .15s;
}
nav.main-nav > ul > li > a:hover,
nav.main-nav > ul > li.active > a{ color:#fff; background:rgba(255,255,255,0.06); }
nav.main-nav > ul > li.active > a{ color:var(--brass-light); }

.has-drop > .drop{
  position:absolute; top:100%; left:0; min-width:240px;
  background:var(--ink-navy-dark);
  border:1px solid var(--line-dark);
  border-radius:var(--radius-md);
  padding:6px; margin-top:6px;
  opacity:0; visibility:hidden; transform:translateY(4px);
  transition:opacity .15s, transform .15s, visibility .15s;
  box-shadow:var(--shadow-deep);
}
.has-drop:hover > .drop, .has-drop:focus-within > .drop{
  opacity:1; visibility:visible; transform:translateY(0);
}
.drop li a{
  display:block; padding:9px 12px; font-size:13.5px; color:#C6CCD8;
  border-radius:var(--radius-sm);
}
.drop li a:hover{ background:rgba(255,255,255,0.06); color:#fff; }

.header-cta{
  display:flex; align-items:center; gap:14px; flex:none;
}
.tel-link{
  font-family:var(--font-mono); font-size:13px; color:#D9DEE8;
  display:none;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 20px; border-radius:var(--radius-sm);
  font-size:14px; font-weight:600; letter-spacing:.01em;
  border:1px solid transparent; cursor:pointer;
  transition:transform .12s ease, box-shadow .12s ease, background .15s, color .15s, border-color .15s;
  white-space:nowrap;
}
.btn:active{ transform:translateY(1px); }
.btn-brass{ background:var(--brass); color:var(--ink-navy-dark); }
.btn-brass:hover{ background:var(--brass-light); }
.btn-outline-light{ border-color:rgba(255,255,255,0.4); color:#fff; }
.btn-outline-light:hover{ border-color:#fff; background:rgba(255,255,255,0.08); }
.btn-oxblood{ background:var(--oxblood); color:#fff; }
.btn-oxblood:hover{ background:var(--oxblood-light); }
.btn-ghost-navy{ border-color:var(--ink-navy); color:var(--ink-navy); }
.btn-ghost-navy:hover{ background:var(--ink-navy); color:#fff; }
.btn-block{ width:100%; }

.nav-toggle{
  display:none; background:none; border:1px solid var(--line-dark);
  border-radius:var(--radius-sm); width:42px; height:38px;
  color:#fff; font-size:18px; cursor:pointer;
}

/* Breadcrumb */
.breadcrumb-bar{ background:var(--parchment-2); border-bottom:1px solid var(--line); }
.breadcrumb{
  display:flex; flex-wrap:wrap; gap:6px; align-items:center;
  font-family:var(--font-mono); font-size:12px; color:var(--slate);
  padding:10px 24px; max-width:1160px; margin:0 auto;
}
.breadcrumb a{ color:var(--slate); }
.breadcrumb a:hover{ color:var(--oxblood); }
.breadcrumb .sep{ color:var(--line); }
.breadcrumb .current{ color:var(--ink-navy); font-weight:600; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  background:
    radial-gradient(ellipse 900px 500px at 82% -10%, rgba(168,132,46,0.20), transparent 60%),
    linear-gradient(180deg, var(--ink-navy) 0%, var(--ink-navy-dark) 100%);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute; inset:0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 96px);
  pointer-events:none;
}
.hero-inner{
  position:relative; z-index:1;
  max-width:1160px; margin:0 auto; padding:76px 24px 88px;
  display:grid; grid-template-columns:1.15fr 0.85fr; gap:48px; align-items:center;
}
.hero h1{ color:#fff; font-size:44px; margin-bottom:20px; }
.hero h1 em{ font-style:normal; color:var(--brass-light); }
.hero-lede{ color:#C6CCD8; font-size:17px; max-width:52ch; margin-bottom:30px; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:36px; }
.hero-meta{
  display:flex; gap:28px; flex-wrap:wrap;
  padding-top:26px; border-top:1px solid var(--line-dark);
}
.hero-meta div strong{
  display:block; font-family:var(--font-display); font-size:24px; color:#fff;
}
.hero-meta div span{
  font-family:var(--font-mono); font-size:11px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--slate-light);
}

/* --- The Stamp: signature element --- */
.stamp-wrap{ display:flex; align-items:center; justify-content:center; position:relative; }
.stamp{
  width:280px; height:280px; border-radius:50%;
  border:2.5px solid var(--brass);
  display:flex; align-items:center; justify-content:center;
  position:relative; transform:rotate(-9deg);
  animation:stamp-in .7s cubic-bezier(.2,.8,.2,1) both;
}
.stamp::before{
  content:""; position:absolute; inset:10px; border-radius:50%;
  border:1px dashed rgba(201,166,75,0.55);
}
.stamp-text{
  text-align:center; font-family:var(--font-mono); color:var(--brass-light);
}
.stamp-text .big{
  display:block; font-family:var(--font-display); font-size:19px;
  color:#fff; letter-spacing:.03em; margin-bottom:6px; line-height:1.25;
}
.stamp-text .small{ font-size:10px; letter-spacing:.16em; text-transform:uppercase; display:block; margin-top:6px; }
.stamp-text .id{ font-size:11px; letter-spacing:.05em; color:var(--slate-light); display:block; margin-top:10px; }
@keyframes stamp-in{
  0%{ opacity:0; transform:rotate(-24deg) scale(.8); }
  100%{ opacity:1; transform:rotate(-9deg) scale(1); }
}

/* ==========================================================================
   PERFORATED / CERTIFICATE DIVIDER
   ========================================================================== */
.perforation{
  height:1px; border-top:1px dashed var(--line);
  position:relative; margin:0;
}
.perforation.on-dark{ border-top-color:var(--line-dark); }

/* ==========================================================================
   SECTIONS
   ========================================================================== */
section{ padding:76px 0; }
.section-tight{ padding:56px 0; }
.section-navy{ background:var(--ink-navy); color:#EDEFF3; }
.section-navy h2{ color:#fff; }
.section-navy .eyebrow{ color:var(--brass-light); }
.section-paper{ background:var(--paper-white); }
.section-head{ max-width:640px; margin-bottom:44px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head h2{ font-size:32px; }
.section-head p{ color:var(--slate); font-size:16px; }
.section-navy .section-head p{ color:#AEB6C4; }

/* --- Service / practice cards --- */
.grid{ display:grid; gap:22px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }

.card{
  background:var(--paper-white);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:28px 26px;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  position:relative;
}
.card:hover{ transform:translateY(-3px); box-shadow:var(--shadow-card); border-color:var(--brass); }
.card .num{
  font-family:var(--font-mono); font-size:12px; color:var(--brass);
  letter-spacing:.08em; display:block; margin-bottom:14px;
}
.card h3{ font-size:19px; margin-bottom:10px; }
.card p{ color:var(--slate); font-size:14.5px; margin-bottom:16px; }
.card-link{
  font-family:var(--font-mono); font-size:12.5px; color:var(--oxblood);
  font-weight:600; letter-spacing:.02em;
}
.card-link::after{ content:" →"; }

.section-navy .card{
  background:rgba(255,255,255,0.03); border-color:var(--line-dark);
}
.section-navy .card h3{ color:#fff; }
.section-navy .card p{ color:#AEB6C4; }
.section-navy .card:hover{ border-color:var(--brass); background:rgba(255,255,255,0.05); }

/* --- Trust strip / stats --- */
.trust-strip{
  display:flex; flex-wrap:wrap; gap:0;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background:var(--parchment-2);
}
.trust-item{
  flex:1; min-width:180px; text-align:center; padding:30px 16px;
  border-right:1px solid var(--line);
}
.trust-item:last-child{ border-right:none; }
.trust-item strong{
  display:block; font-family:var(--font-display); font-size:30px; color:var(--ink-navy);
}
.trust-item span{
  font-family:var(--font-mono); font-size:11px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--slate);
}

/* --- Process / steps --- */
.process{ counter-reset:step; }
.process-row{
  display:grid; grid-template-columns:90px 1fr; gap:20px;
  padding:26px 0; border-top:1px solid var(--line);
}
.process-row:last-child{ border-bottom:1px solid var(--line); }
.process-index{
  font-family:var(--font-mono); font-size:13px; color:var(--brass);
  padding-top:2px;
}
.process-row h3{ font-size:18px; margin-bottom:6px; }
.process-row p{ color:var(--slate); margin:0; max-width:60ch; }

/* --- Two column feature --- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.split-reverse{ direction:rtl; } .split-reverse > *{ direction:ltr; }
.doc-panel{
  background:var(--paper-white); border:1px solid var(--line);
  border-radius:var(--radius-md); padding:34px; box-shadow:var(--shadow-card);
  position:relative;
}
.doc-panel::before{
  content:"CERTIFIED COPY"; position:absolute; top:20px; right:22px;
  font-family:var(--font-mono); font-size:10px; letter-spacing:.14em;
  color:var(--line); transform:rotate(0deg);
}
.doc-panel h4{ font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; color:var(--brass); text-transform:uppercase; margin-bottom:18px; }
.doc-list li{
  display:flex; gap:12px; padding:11px 0; border-top:1px dashed var(--line);
  font-size:14.5px; align-items:flex-start;
}
.doc-list li:first-child{ border-top:none; }
.doc-list li::before{ content:"§"; color:var(--brass); font-weight:700; }

/* --- CTA band --- */
.cta-band{
  background:linear-gradient(120deg, var(--oxblood) 0%, #5C1F1F 100%);
  color:#fff; text-align:center; padding:64px 24px;
}
.cta-band h2{ color:#fff; font-size:30px; margin-bottom:12px; }
.cta-band p{ color:#EAD7D7; max-width:52ch; margin:0 auto 28px; }
.cta-actions{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* --- FAQ accordion --- */
.faq-item{ border-top:1px solid var(--line); }
.faq-item:last-child{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; text-align:left; background:none; border:none; cursor:pointer;
  padding:20px 4px; display:flex; justify-content:space-between; align-items:center;
  gap:16px; font-family:var(--font-body); font-size:16.5px; font-weight:600;
  color:var(--ink-navy);
}
.faq-q .icon{ font-family:var(--font-mono); color:var(--brass); flex:none; transition:transform .2s; }
.faq-item.open .faq-q .icon{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .25s ease; }
.faq-a-inner{ padding:0 4px 22px; color:var(--slate); max-width:70ch; }
.faq-item.open .faq-a{ max-height:600px; }

/* --- Team --- */
.team-card{ text-align:left; }
.team-photo{
  width:100%; aspect-ratio:1/1; border-radius:var(--radius-md);
  background:linear-gradient(150deg, var(--ink-navy) 0%, var(--ink-navy-dark) 100%);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-size:34px; color:var(--brass-light);
  margin-bottom:16px; border:1px solid var(--line);
}
.team-card h3{ font-size:17px; margin-bottom:2px; }
.team-role{ font-family:var(--font-mono); font-size:11.5px; color:var(--brass); letter-spacing:.05em; text-transform:uppercase; margin-bottom:10px; display:block; }
.team-card p{ font-size:14px; color:var(--slate); }

/* --- Blog --- */
.post-card{ display:flex; flex-direction:column; height:100%; }
.post-meta{ font-family:var(--font-mono); font-size:11.5px; color:var(--slate); letter-spacing:.05em; margin-bottom:10px; text-transform:uppercase; }
.post-meta .tag{ color:var(--oxblood); }
.post-card h3{ font-size:19px; }
.post-card p{ color:var(--slate); font-size:14.5px; flex:1; }

article.post-body{ font-size:17px; color:var(--ink-text); }
article.post-body h2{ font-size:25px; margin-top:1.6em; }
article.post-body h3{ font-size:20px; margin-top:1.3em; }
article.post-body ul, article.post-body ol{ padding-left:1.4em; margin-bottom:1.2em; }
article.post-body li{ margin-bottom:.5em; list-style:disc; }
article.post-body ol li{ list-style:decimal; }
article.post-body blockquote{
  border-left:3px solid var(--brass); margin:1.6em 0; padding:4px 0 4px 20px;
  color:var(--slate); font-style:italic;
}

/* --- Forms --- */
.form-field{ margin-bottom:18px; }
.form-field label{
  display:block; font-family:var(--font-mono); font-size:11.5px;
  letter-spacing:.08em; text-transform:uppercase; color:var(--ink-navy);
  margin-bottom:7px;
}
.form-field input, .form-field select, .form-field textarea{
  width:100%; padding:12px 14px; border:1px solid var(--line);
  border-radius:var(--radius-sm); background:var(--paper-white);
  font-family:var(--font-body); font-size:15px; color:var(--ink-text);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus{
  border-color:var(--brass); outline:none; box-shadow:0 0 0 3px rgba(168,132,46,0.18);
}
.form-note{ font-size:12.5px; color:var(--slate-light); margin-top:16px; }
.form-success{
  display:none; background:#EAF3EC; border:1px solid var(--green-ok);
  color:#28492F; padding:14px 16px; border-radius:var(--radius-sm);
  font-size:14px; margin-bottom:18px;
}
.form-success.show{ display:block; }

/* --- Office / contact cards --- */
.office-card{ border-left:3px solid var(--brass); padding-left:20px; }
.office-card h3{ font-size:17px; }
.office-card p{ font-size:14.5px; color:var(--slate); margin-bottom:4px; }

/* --- Sidebar (services/blog) --- */
.with-sidebar{ display:grid; grid-template-columns:1fr 300px; gap:52px; align-items:start; }
.sidebar-box{
  background:var(--parchment-2); border:1px solid var(--line);
  border-radius:var(--radius-md); padding:24px; margin-bottom:20px;
}
.sidebar-box h4{ font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--brass); margin-bottom:14px; }
.sidebar-box ul li{ padding:8px 0; border-top:1px dashed var(--line); font-size:14px; }
.sidebar-box ul li:first-child{ border-top:none; }
.sidebar-box ul li a:hover{ color:var(--oxblood); }
.sidebar-cta{ background:var(--ink-navy); color:#fff; }
.sidebar-cta h4{ color:var(--brass-light); }
.sidebar-cta p{ color:#C6CCD8; font-size:14px; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{ background:var(--ink-navy-dark); color:#AEB6C4; }
.footer-top{
  max-width:1160px; margin:0 auto; padding:64px 24px 40px;
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px;
}
.footer-top h4{
  font-family:var(--font-mono); font-size:11.5px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--brass-light); margin-bottom:16px;
}
.footer-top ul li{ margin-bottom:10px; font-size:14px; }
.footer-top ul li a:hover{ color:#fff; }
.footer-about p{ font-size:14px; color:#8F98A8; max-width:36ch; }
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 24px; max-width:1160px; margin:0 auto;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  font-size:12.5px; color:#7C8595;
}
.footer-bottom a:hover{ color:#fff; }
.footer-social{ display:flex; gap:14px; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (min-width:1180px){ .tel-link{ display:block; } }

@media (max-width:960px){
  .hero-inner{ grid-template-columns:1fr; }
  .stamp-wrap{ order:-1; }
  .stamp{ width:190px; height:190px; }
  .grid-4{ grid-template-columns:repeat(2,1fr); }
  .grid-3{ grid-template-columns:repeat(2,1fr); }
  .split{ grid-template-columns:1fr; gap:32px; }
  .with-sidebar{ grid-template-columns:1fr; }
  .footer-top{ grid-template-columns:1fr 1fr; }
}

@media (max-width:720px){
  nav.main-nav{
    position:fixed; inset:60px 0 0 0; background:var(--ink-navy-dark);
    padding:16px; overflow-y:auto; transform:translateX(100%);
    transition:transform .2s ease; z-index:90;
  }
  nav.main-nav.open{ transform:translateX(0); }
  nav.main-nav > ul{ flex-direction:column; align-items:stretch; gap:2px; }
  .has-drop > .drop{
    position:static; opacity:1; visibility:visible; transform:none;
    box-shadow:none; margin-top:0; border:none; padding-left:12px;
    max-height:0; overflow:hidden; transition:max-height .2s ease;
  }
  .has-drop.open > .drop{ max-height:400px; }
  .nav-toggle{ display:block; }
  .header-cta .btn-outline-light{ display:none; }
  .hero h1{ font-size:32px; }
  .hero-inner{ padding:48px 20px 56px; }
  .grid-3, .grid-4, .grid-2{ grid-template-columns:1fr; }
  .trust-item{ flex:1 1 50%; border-bottom:1px solid var(--line); }
  section{ padding:52px 0; }
  .footer-top{ grid-template-columns:1fr; padding:48px 20px 32px; }
  .doc-panel{ padding:24px; }
}