/* ============================================================
   Dr. Diya Dutta — Personal / Consultancy Website
   Palette: Corporate Navy + NGO Orange
   ============================================================ */

:root {
  --navy: #721a2d;
  --navy-dark: #4a1120;
  --navy-light: #93293f;
  --orange: #ad2f4f;
  --orange-dark: #8f2540;
  --orange-soft: #f7e9ed;
  --ink: #2b3441;
  --muted: #64707f;
  --line: #ecdfe3;
  --bg-soft: #faf6f7;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(114, 26, 45, 0.10);
  --radius: 12px;
  --font-head: 'Lora', Georgia, serif;
  --font-body: 'Source Sans 3', 'Segoe UI', Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--ink); line-height: 1.65; background: var(--white); font-size: 17px; }
img { max-width: 100%; display: block; }
a { color: var(--navy); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--orange); }
ul { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--navy); line-height: 1.25; }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- Top bar ---------- */
.topbar { background: var(--navy-dark); color: #e6ccd3; font-size: 14px; padding: 7px 0; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; }
.topbar-left span { margin-right: 6px; }
.topbar-sep { color: #8a5361; }
.topbar i { color: var(--orange); margin-right: 5px; }
.topbar-right a { color: #e6ccd3; margin-left: 14px; font-size: 15px; }
.topbar-right a:hover { color: var(--orange); }

/* ---------- Header / Nav ---------- */
.site-header { background: var(--white); position: sticky; top: 0; z-index: 900; box-shadow: 0 2px 12px rgba(74, 17, 32, .08); transition: box-shadow .3s ease; }
.site-header.scrolled { box-shadow: 0 4px 18px rgba(74, 17, 32, .14); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 46px; height: 46px; border-radius: 10px; background: linear-gradient(135deg, var(--navy) 55%, var(--orange) 130%); color: #fff; font-family: var(--font-head); font-weight: 600; font-size: 20px; display: flex; align-items: center; justify-content: center; letter-spacing: 1px; transition: transform .3s ease; }
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.05); }
.brand-logo { width: 100px; object-fit: contain; border-radius: 10px; transition: transform .3s ease; }
.brand:hover .brand-logo { transform: scale(1.06); }
.brand-logo-footer { background: #fff; padding: 3px; }
.brand-text { display: flex; flex-direction: column; }
.brand-name { font-family: var(--font-head); font-size: 20px; font-weight: 600; color: var(--navy); }
.brand-tag { font-size: 11.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }

.main-nav ul { display: flex; align-items: center; gap: 6px; }
.main-nav > ul > li { position: relative; }
.main-nav a { display: block; padding: 10px 15px; font-weight: 600; font-size: 15.5px; color: var(--navy); position: relative; }
.main-nav > ul > li > a::after { content: ""; position: absolute; left: 15px; right: 15px; bottom: 4px; height: 2px; background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .3s ease; }
.main-nav > ul > li > a:hover::after, .main-nav > ul > li > a.active::after { transform: scaleX(1); }
.main-nav a.active { color: var(--orange); }
.main-nav .fa-chevron-down { font-size: 10px; margin-left: 4px; }

.dropdown { position: absolute; top: 100%; left: 0; min-width: 210px; background: var(--white); border-radius: 10px; box-shadow: var(--shadow); padding: 8px 0; opacity: 0; visibility: hidden; transform: translateY(12px); transition: all .3s ease; border-top: 3px solid var(--orange); }
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(4px); }
.dropdown a { padding: 9px 18px; font-weight: 400; }
.dropdown a::after { display: none; }
.dropdown a:hover { background: var(--orange-soft); color: var(--orange-dark); padding-left: 24px; }

.btn-nav { background: var(--orange); color: #fff !important; border-radius: 8px; margin-left: 8px; box-shadow: 0 4px 14px rgba(173, 47, 79, .35); transition: all .3s ease; }
.btn-nav::after { display: none !important; }
.btn-nav:hover { background: var(--navy); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(114, 26, 45, .35); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 34px; }
.nav-toggle span { display: block; height: 3px; background: var(--navy); margin: 6px 0; border-radius: 2px; transition: all .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }



/* ---------- Preloader ---------- */
html.preloading { overflow: hidden; }
#preloader { position: fixed; inset: 0; z-index: 9999; background: linear-gradient(125deg, var(--navy-dark) 0%, var(--navy) 55%, var(--navy-light) 100%); display: flex; align-items: center; justify-content: center; transition: opacity .8s ease, visibility .8s ease; }
#preloader.preloader-hide { opacity: 0; visibility: hidden; }
.preloader-inner { text-align: center; color: #fff; animation: preFadeUp 1s ease both; }
@keyframes preFadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.preloader-logo-wrap { position: relative; width: 170px; height: 170px; margin: 0 auto 28px; display: flex; align-items: center; justify-content: center; }
.preloader-logo { width: 160px; height: 160px; object-fit: contain; border-radius: 16px; background: #fff; padding: 8px; box-shadow: 0 10px 34px rgba(0,0,0,.35); animation: preLogoPulse 2.2s ease-in-out infinite; }
@keyframes preLogoPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.06); } }
.preloader-name { color: #fff; font-size: clamp(28px, 4vw, 40px); font-family: var(--font-head); letter-spacing: .5px; margin-bottom: 8px; animation: preFadeUp 1s .35s ease both; }
.preloader-designation { color: #eba7b8; font-size: 15px; letter-spacing: 2.5px; text-transform: uppercase; margin-bottom: 34px; animation: preFadeUp 1s .6s ease both; }
.preloader-bar { width: 240px; height: 4px; background: rgba(255,255,255,.15); border-radius: 4px; margin: 0 auto; overflow: hidden; animation: preFadeUp 1s .8s ease both; }
.preloader-bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #dba922, var(--orange)); border-radius: 4px; animation: preProgress 5s .2s linear forwards; }
@keyframes preProgress { to { width: 100%; } }

/* ---------- Buttons ---------- */
.btn { display: inline-block; padding: 13px 30px; border-radius: 8px; font-weight: 700; font-size: 15.5px; letter-spacing: .3px; transition: all .3s ease; cursor: pointer; border: 2px solid transparent; }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 6px 18px rgba(173, 47, 79, .35); }
.btn-primary:hover { background: var(--orange-dark); color: #fff; transform: translateY(-3px); box-shadow: 0 10px 24px rgba(173, 47, 79, .45); }
.btn-outline { border-color: #fff; color: #fff; background: transparent; }
.btn-outline:hover { background: #fff; color: var(--navy); transform: translateY(-3px); }
.btn-outline-navy { border-color: var(--navy); color: var(--navy); }
.btn-outline-navy:hover { background: var(--navy); color: #fff; transform: translateY(-3px); }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(120deg, #4a1111 0%, #721a1a 55%, #d9ba6e 100%); color: #f6e9ed; position: relative; overflow: hidden; padding: 90px 0 100px; }
.hero::before { content: ""; position: absolute; right: -140px; top: -140px; width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(173,47,79,.30), transparent 65%); }
.hero::after { content: ""; position: absolute; left: -100px; bottom: -180px; width: 380px; height: 380px; border-radius: 50%; border: 60px solid rgba(255,255,255,.04); }
.hero-inner { display: grid; grid-template-columns: 1.25fr .9fr; gap: 60px; align-items: center; position: relative; z-index: 2; }
.hero-kicker { display: inline-block; background: rgba(173,47,79,.15); border: 1px solid rgba(173,47,79,.5); color: #eba7b8; padding: 6px 16px; border-radius: 30px; font-size: 13px; letter-spacing: 2.5px; text-transform: uppercase; font-weight: 700; margin-bottom: 22px; }
.hero h1 { color: #fff; font-size: clamp(34px, 4.5vw, 54px); margin-bottom: 18px; }
.hero h1 em { color: #dba922; font-style: normal; }
.hero p.lead { font-size: 19px; max-width: 560px; color: #e4cbd2; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); backdrop-filter: blur(4px); border-radius: 16px; padding: 34px 30px; }
.hero-card h3 { color: #fff; font-size: 18px; margin-bottom: 18px; letter-spacing: .5px; }
.hero-card li { display: flex; gap: 12px; margin-bottom: 14px; font-size: 15.5px; color: #ecd6dc; align-items: flex-start; }
.hero-card li i { color: var(--orange); margin-top: 4px; }

/* ---------- Stats band ---------- */
.stats-band { background: var(--orange); color: #fff; padding: 34px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat h3 { color: #fff; font-size: 40px; font-weight: 600; }
.stat p { font-size: 14.5px; opacity: .92; text-transform: uppercase; letter-spacing: 1.5px; }

/* ---------- Sections ---------- */
.section { padding: 90px 0; }
.section.alt { background: var(--bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head .kicker { color: var(--orange); text-transform: uppercase; letter-spacing: 3px; font-size: 13px; font-weight: 700; display: block; margin-bottom: 10px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 17.5px; }
.section-head.left { text-align: left; margin-left: 0; }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 30px; transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease; position: relative; overflow: hidden; }
.card::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--orange), var(--navy)); transform: scaleX(0); transform-origin: left; transition: transform .4s ease; }
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }
.card-icon { width: 62px; height: 62px; border-radius: 14px; background: var(--orange-soft); color: var(--orange); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 22px; transition: all .35s ease; }
.card:hover .card-icon { background: var(--orange); color: #fff; transform: rotate(-6deg) scale(1.06); }
.card h3 { font-size: 20.5px; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 15.5px; }
.card .card-link { display: inline-block; margin-top: 18px; font-weight: 700; font-size: 14.5px; color: var(--orange); }
.card .card-link i { transition: transform .3s ease; margin-left: 6px; }
.card:hover .card-link i { transform: translateX(6px); }

/* ---------- About preview ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 64px; align-items: center; }
.about-photo { position: relative; }
.photo-frame { border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); background: linear-gradient(150deg, var(--navy), var(--navy-light)); aspect-ratio: 4/5; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.55); font-size: 90px; position: relative; z-index: 2; }
.about-photo::after { content: ""; position: absolute; right: -20px; bottom: -20px; width: 65%; height: 65%; border: 4px solid var(--orange); border-radius: 16px; z-index: 1; }
.about-photo .badge-exp { position: absolute; left: -22px; bottom: 34px; background: var(--orange); color: #fff; border-radius: 12px; padding: 16px 22px; z-index: 3; box-shadow: 0 8px 24px rgba(173,47,79,.4); text-align: center; animation: floaty 4s ease-in-out infinite; }
.badge-exp strong { display: block; font-size: 30px; font-family: var(--font-head); }
.badge-exp span { font-size: 12.5px; text-transform: uppercase; letter-spacing: 1px; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

.about-text .kicker { color: var(--orange); text-transform: uppercase; letter-spacing: 3px; font-size: 13px; font-weight: 700; display: block; margin-bottom: 10px; }
.about-text h2 { font-size: clamp(28px, 3.2vw, 38px); margin-bottom: 20px; }
.about-text p { color: var(--muted); margin-bottom: 16px; }
.about-points { margin: 22px 0 30px; }
.about-points li { display: flex; gap: 12px; margin-bottom: 12px; font-weight: 600; color: var(--ink); }
.about-points li i { color: var(--orange); margin-top: 5px; }

/* ---------- Highlights strip ---------- */
.highlight-strip { background: linear-gradient(110deg, var(--navy-dark), var(--navy)); color: #eed9df; padding: 70px 0; position: relative; overflow: hidden; }
.highlight-strip::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(45deg, transparent 0 44px, rgba(255,255,255,.025) 44px 88px); }
.highlight-inner { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; position: relative; z-index: 2; }
.highlight-strip h2 { color: #fff; font-size: clamp(26px, 3vw, 36px); margin-bottom: 10px; }
.highlight-strip h2 em { color: var(--orange); font-style: normal; }
.highlight-strip p { max-width: 640px; }

/* ---------- Clients / logos ---------- */
.clients-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.client-chip { background: var(--white); border: 1px solid var(--line); border-radius: 10px; padding: 24px 18px; text-align: center; font-family: var(--font-head); font-weight: 600; color: var(--navy); font-size: 16.5px; transition: all .3s ease; display: flex; align-items: center; justify-content: center; min-height: 92px; }
.client-chip:hover { border-color: var(--orange); color: var(--orange-dark); transform: translateY(-5px); box-shadow: 0 8px 20px rgba(173,47,79,.15); }

/* ---------- Page banner ---------- */
.page-banner { background: linear-gradient(115deg, var(--navy-dark), var(--navy) 60%, var(--navy-light)); color: #fff; padding: 70px 0; position: relative; overflow: hidden; }
.page-banner::after { content: ""; position: absolute; right: -100px; top: -100px; width: 340px; height: 340px; border-radius: 50%; background: radial-gradient(circle, rgba(173,47,79,.35), transparent 65%); }
.page-banner h1 { color: #fff; font-size: clamp(30px, 4vw, 46px); margin-bottom: 8px; position: relative; z-index: 2; }
.breadcrumb { color: #d3aeb8; font-size: 15px; position: relative; z-index: 2; }
.breadcrumb a { color: #eba7b8; }
.breadcrumb a:hover { color: var(--orange); }

/* ---------- Services page ---------- */
.service-block { display: grid; grid-template-columns: 90px 1fr; gap: 28px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 38px 34px; margin-bottom: 26px; transition: all .35s ease; }
.service-block:hover { box-shadow: var(--shadow); transform: translateX(8px); border-left: 4px solid var(--orange); }
.service-block .card-icon { margin-bottom: 0; }
.service-block h3 { font-size: 23px; margin-bottom: 10px; }
.service-block p { color: var(--muted); margin-bottom: 12px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.tag { background: var(--bg-soft); border: 1px solid var(--line); color: var(--navy); font-size: 13px; font-weight: 600; padding: 5px 13px; border-radius: 30px; transition: all .25s ease; }
.tag:hover { background: var(--orange-soft); border-color: var(--orange); color: var(--orange-dark); }

/* ---------- Work / publications tabs ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 44px; }
.tab-btn { padding: 10px 24px; border-radius: 30px; border: 1.5px solid var(--line); background: var(--white); font-family: var(--font-body); font-weight: 700; font-size: 14.5px; color: var(--navy); cursor: pointer; transition: all .3s ease; letter-spacing: .3px; }
.tab-btn:hover { border-color: var(--orange); color: var(--orange-dark); transform: translateY(-2px); }
.tab-btn.active { background: var(--orange); border-color: var(--orange); color: #fff; box-shadow: 0 5px 16px rgba(173,47,79,.35); }

.pub-list { display: grid; gap: 18px; }
.pub-item { background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--navy); border-radius: 10px; padding: 24px 28px; transition: all .3s ease; }
.pub-item:hover { border-left-color: var(--orange); box-shadow: var(--shadow); transform: translateX(6px); }
.pub-item .pub-type { display: inline-block; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--orange); background: var(--orange-soft); padding: 4px 12px; border-radius: 20px; margin-bottom: 10px; }
.pub-item h3 { font-size: 18.5px; margin-bottom: 6px; }
.pub-item p { color: var(--muted); font-size: 15px; }
.pub-item.hidden { display: none; }

/* ---------- Timeline (projects) ---------- */
.timeline { position: relative; padding-left: 36px; }
.timeline::before { content: ""; position: absolute; left: 10px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--orange), var(--navy)); }
.timeline-item { position: relative; margin-bottom: 34px; background: var(--white); border: 1px solid var(--line); border-radius: 10px; padding: 24px 28px; transition: all .3s ease; }
.timeline-item:hover { box-shadow: var(--shadow); transform: translateX(6px); }
.timeline-item::before { content: ""; position: absolute; left: -33px; top: 28px; width: 14px; height: 14px; border-radius: 50%; background: var(--orange); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--orange); }
.timeline-item .year { font-weight: 700; color: var(--orange); font-size: 14px; letter-spacing: 1px; }
.timeline-item h3 { font-size: 19px; margin: 4px 0 6px; }
.timeline-item p { color: var(--muted); font-size: 15.5px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 50px; align-items: start; }
.contact-info-card { background: var(--navy); color: #eed9df; border-radius: var(--radius); padding: 42px 36px; position: relative; overflow: hidden; }
.contact-info-card::after { content: ""; position: absolute; right: -70px; bottom: -70px; width: 220px; height: 220px; border-radius: 50%; background: rgba(173,47,79,.25); }
.contact-info-card h3 { color: #fff; font-size: 24px; margin-bottom: 14px; }
.contact-info-card li { display: flex; gap: 16px; margin-bottom: 22px; align-items: flex-start; position: relative; z-index: 2; }
.contact-info-card li i { width: 42px; height: 42px; flex: none; background: rgba(173,47,79,.2); color: var(--orange); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 17px; }
.contact-info-card a { color: #fff; }
.contact-info-card a:hover { color: var(--orange); }
.contact-info-card strong { color: #fff; display: block; font-size: 15px; }
.contact-info-card span, .contact-info-card a { font-size: 15.5px; }

.contact-form { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 42px 36px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 7px; color: var(--navy); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 13px 16px; border: 1.5px solid var(--line); border-radius: 8px; font-family: var(--font-body); font-size: 15.5px; color: var(--ink); transition: all .25s ease; background: var(--bg-soft); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--orange); background: #fff; box-shadow: 0 0 0 4px rgba(173,47,79,.12); }
.form-note { font-size: 13.5px; color: var(--muted); margin-top: 12px; }
.alert-success { background: #e7f6ec; border: 1px solid #9ad4ab; color: #21683a; padding: 14px 18px; border-radius: 8px; margin-bottom: 20px; font-weight: 600; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(110deg, var(--orange), var(--orange-dark)); color: #fff; padding: 64px 0; text-align: center; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; left: -60px; top: -60px; width: 220px; height: 220px; border-radius: 50%; background: rgba(255,255,255,.12); }
.cta-band h2 { color: #fff; font-size: clamp(26px, 3vw, 36px); margin-bottom: 12px; position: relative; }
.cta-band p { max-width: 620px; margin: 0 auto 28px; opacity: .95; position: relative; }
.cta-band .btn-outline:hover { color: var(--orange-dark); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-dark); color: #d3aeb8; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.1fr 1.2fr; gap: 44px; padding: 70px 0 50px; }
.footer-col h4 { color: #fff; font-size: 17px; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 36px; height: 3px; background: var(--orange); border-radius: 2px; }
.footer-brand { margin-bottom: 16px; }
.footer-brand .brand-name { color: #fff; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #d3aeb8; transition: all .25s ease; }
.footer-links a:hover { color: var(--orange); padding-left: 6px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; align-items: flex-start; }
.footer-contact i { color: var(--orange); margin-top: 5px; }
.footer-contact a { color: #d3aeb8; }
.footer-contact a:hover { color: var(--orange); }
.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.footer-social a { width: 38px; height: 38px; border-radius: 50%; border: 1px solid rgba(255,255,255,.2); color: #e0c3cb; display: flex; align-items: center; justify-content: center; font-size: 15px; transition: all .3s ease; }
.footer-social a:hover { background: var(--orange); border-color: var(--orange); color: #fff; transform: translateY(-4px); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 14px; }
.footer-bottom a { color: var(--orange); }

/* ---------- WhatsApp float ---------- */
.whatsapp-float { position: fixed; right: 26px; bottom: 26px; width: 60px; height: 60px; background: #25d366; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 30px; z-index: 999; box-shadow: 0 8px 24px rgba(37, 211, 102, .45); transition: transform .3s ease; animation: pulse-wa 2.4s infinite; }
.whatsapp-float:hover { transform: scale(1.12); color: #fff; animation: none; }
@keyframes pulse-wa {
  0% { box-shadow: 0 8px 24px rgba(37,211,102,.45), 0 0 0 0 rgba(37,211,102,.45); }
  70% { box-shadow: 0 8px 24px rgba(37,211,102,.45), 0 0 0 18px rgba(37,211,102,0); }
  100% { box-shadow: 0 8px 24px rgba(37,211,102,.45), 0 0 0 0 rgba(37,211,102,0); }
}
.whatsapp-tooltip { position: absolute; right: 72px; background: var(--navy-dark); color: #fff; font-size: 13.5px; font-weight: 600; white-space: nowrap; padding: 8px 14px; border-radius: 8px; opacity: 0; visibility: hidden; transform: translateX(8px); transition: all .3s ease; }
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; visibility: visible; transform: translateX(0); }

/* ---------- Back to top ---------- */
.back-to-top { position: fixed; right: 30px; bottom: 100px; width: 46px; height: 46px; border-radius: 50%; background: var(--navy); color: #fff; border: none; cursor: pointer; font-size: 16px; opacity: 0; visibility: hidden; transition: all .35s ease; z-index: 998; }
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--orange); transform: translateY(-4px); }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .12s; }
.reveal-delay-2 { transition-delay: .24s; }
.reveal-delay-3 { transition-delay: .36s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner, .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .highlight-inner { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .topbar-left span:last-of-type, .topbar-sep { display: none; }
  .nav-toggle { display: block; }
  .main-nav { position: fixed; top: 0; right: -300px; width: 280px; height: 100vh; background: var(--navy-dark); padding: 90px 26px 30px; transition: right .35s ease; box-shadow: -8px 0 30px rgba(0,0,0,.25); z-index: 950; }
  .main-nav.open { right: 0; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav a { color: #f0dde2; padding: 13px 10px; border-bottom: 1px solid rgba(255,255,255,.07); }
  .main-nav > ul > li > a::after { display: none; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; background: transparent; box-shadow: none; border-top: none; padding-left: 16px; }
  .dropdown a { color: #c99fab; font-size: 14.5px; }
  .btn-nav { margin: 14px 0 0; text-align: center; }
  .nav-toggle { position: relative; z-index: 960; }
  .nav-toggle.open span { background: #fff; }
  .card-grid, .clients-grid { grid-template-columns: 1fr; }
  .service-block { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { padding: 64px 0 72px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .about-photo .badge-exp { left: 10px; }
}

/* ---------- Client logo images ---------- */
.clients-grid { grid-template-columns: repeat(5, 1fr); }
.logo-chip { padding: 18px 20px; min-height: 110px; }
.logo-chip img { max-height: 70px; max-width: 100%; width: auto; object-fit: contain; filter: grayscale(100%); opacity: .75; transition: filter .35s ease, opacity .35s ease, transform .35s ease; }
.logo-chip:hover img { filter: grayscale(0%); opacity: 1; transform: scale(1.07); }
@media (max-width: 1024px) { .clients-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .clients-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Publication links ---------- */
.pub-links { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 10px; }
.pub-link { display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; font-weight: 700; color: var(--orange); background: var(--orange-soft); border: 1px solid transparent; padding: 6px 14px; border-radius: 30px; transition: all .3s ease; }
.pub-link:hover { background: var(--orange); color: #fff; transform: translateY(-2px); box-shadow: 0 5px 14px rgba(173,47,79,.3); }
.pub-link i { font-size: 11px; }