/* ===================================================================
   Research Paper Publisher — Advanced Stylesheet
   Theme: Deep Navy + Emerald + Gold accents
   =================================================================== */

:root {
  --navy-900: #0a1628;
  --navy-800: #0f1f3a;
  --navy-700: #16294d;
  --navy-600: #1e3563;
  --navy-500: #2a4778;
  --emerald-600: #059669;
  --emerald-500: #10b981;
  --emerald-400: #34d399;
  --gold-500: #f59e0b;
  --gold-400: #fbbf24;
  --gold-300: #fcd34d;
  --crimson-600: #dc2626;
  --crimson-500: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;
  --white: #ffffff;
  --font-heading: 'Poppins', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.12);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.18);
  --shadow-xl: 0 24px 64px rgba(0,0,0,.25);
  --shadow-glow: 0 0 32px rgba(16,185,129,.35);
  --shadow-gold: 0 0 28px rgba(245,158,11,.35);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: .35s cubic-bezier(.4,0,.2,1);
  --max-width: 1280px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--neutral-700);
  background: var(--neutral-50);
  overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.2; color: var(--navy-800); }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.8rem); }
h4 { font-size: 1.2rem; }
p { margin-bottom: 1rem; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

.section { padding: 100px 0; position: relative; }
.section-sm { padding: 64px 0; }

.section-title { text-align: center; margin-bottom: 56px; }
.section-title .badge {
  display: inline-block; font-size: .8rem; font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase; color: var(--emerald-600); margin-bottom: 12px;
}
.section-title h2 { margin-bottom: 16px; }
.section-title p { max-width: 640px; margin: 0 auto; color: var(--neutral-500); font-size: 1.05rem; }

.text-center { text-align: center; }
.text-gold { color: var(--gold-500); }
.text-emerald { color: var(--emerald-600); }
.bg-navy { background: var(--navy-900); color: var(--neutral-200); }
.bg-light { background: var(--neutral-100); }

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border: none; border-radius: var(--radius-md);
  font-family: var(--font-heading); font-weight: 600; font-size: 1rem;
  cursor: pointer; transition: var(--transition); position: relative; overflow: hidden;
}
.btn-primary { background: linear-gradient(135deg, var(--emerald-600), var(--emerald-500)); color: var(--white); box-shadow: var(--shadow-md); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-glow); }
.btn-gold { background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: var(--navy-900); box-shadow: var(--shadow-md); }
.btn-gold:hover { transform: translateY(-3px); box-shadow: var(--shadow-gold); }
.btn-outline { background: transparent; border: 2px solid var(--neutral-300); color: var(--navy-800); }
.btn-outline:hover { border-color: var(--emerald-500); color: var(--emerald-600); transform: translateY(-2px); }
.btn-light { background: var(--white); color: var(--navy-800); }
.btn-light:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.btn-lg { padding: 18px 44px; font-size: 1.1rem; }

/* ripple */
.btn::after {
  content: ''; position: absolute; top: 50%; left: 50%; width: 0; height: 0;
  border-radius: 50%; background: rgba(255,255,255,.3);
  transform: translate(-50%,-50%); transition: width .6s, height .6s;
}
.btn:hover::after { width: 400px; height: 400px; }

/* ===================== HEADER ===================== */
.header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  transition: var(--transition); padding: 18px 0;
}
.header.scrolled {
  background: rgba(10,22,40,.95); backdrop-filter: blur(16px);
  box-shadow: var(--shadow-md); padding: 12px 0;
}
.header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo img { width: 165px; height: 85px; border-radius: 10px; }
.logo-text { font-family: var(--font-heading); font-weight: 700; font-size: 1.25rem; color: var(--white); line-height: 1.2; }
.logo-text span { color: var(--emerald-400); display: block; font-size: .7rem; letter-spacing: 3px; text-transform: uppercase; font-weight: 500; }

.nav { display: flex; align-items: center; gap: 36px; }
.nav a {
  color: var(--neutral-200); font-weight: 500; font-size: .95rem; position: relative;
}
.nav a::after {
  content: ''; position: absolute; bottom: -6px; left: 0; width: 0; height: 2px;
  background: var(--emerald-400); transition: var(--transition);
}
.nav a:hover, .nav a.active { color: var(--emerald-400); }
.nav a:hover::after, .nav a.active::after { width: 100%; }

.header-cta { display: flex; align-items: center; gap: 16px; }
.call-cta {
  display: flex; align-items: center; gap: 8px; color: var(--white); font-weight: 600;
  background: rgba(16,185,129,.15); padding: 10px 20px; border-radius: var(--radius-md);
  border: 1px solid rgba(16,185,129,.3);
}
.call-cta:hover { background: rgba(16,185,129,.25); }
.call-cta svg { width: 18px; height: 18px; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; }
.menu-toggle span { width: 26px; height: 3px; background: var(--white); border-radius: 2px; transition: var(--transition); }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px,6px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px,-6px); }

/* ===================== HERO ===================== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 50%, var(--navy-600) 100%);
  overflow: hidden; padding-top: 100px;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(16,185,129,.15), transparent 50%),
              radial-gradient(circle at 80% 30%, rgba(245,158,11,.1), transparent 50%);
}
.hero-bg-img {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: .15; animation: slowZoom 20s ease-in-out infinite alternate;
}
@keyframes slowZoom { from { transform: scale(1); } to { transform: scale(1.12); } }

.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-content { animation: fadeInLeft 1s ease; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px;
  background: rgba(16,185,129,.15); border: 1px solid rgba(16,185,129,.3);
  border-radius: 50px; color: var(--emerald-400); font-size: .85rem; font-weight: 600; margin-bottom: 24px;
}
.hero h1 { color: var(--white); margin-bottom: 24px; }
.hero h1 .highlight { color: var(--emerald-400); position: relative; }
.hero h1 .highlight::after { content: ''; position: absolute; bottom: 4px; left: 0; width: 100%; height: 4px; background: var(--gold-500); border-radius: 2px; }
.hero p { color: var(--neutral-300); font-size: 1.15rem; margin-bottom: 32px; max-width: 520px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; }
.hero-stat .num { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 800; color: var(--emerald-400); }
.hero-stat .label { color: var(--neutral-400); font-size: .85rem; text-transform: uppercase; letter-spacing: 1px; }

.hero-visual { position: relative; animation: fadeInRight 1s ease; }
.hero-card {
  background: rgba(255,255,255,.08); backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.15); border-radius: var(--radius-xl);
  padding: 40px; box-shadow: var(--shadow-xl);
}
.hero-card h3 { color: var(--white); margin-bottom: 24px; }
.hero-card-feature { display: flex; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.hero-card-feature:last-child { border-bottom: none; }
.hero-card-feature .icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: rgba(16,185,129,.2); color: var(--emerald-400); flex-shrink: 0; }
.hero-card-feature .icon svg { width: 24px; height: 24px; }
.hero-card-feature h4 { color: var(--white); font-size: 1rem; margin-bottom: 2px; }
.hero-card-feature p { color: var(--neutral-400); font-size: .85rem; margin: 0; }

/* floating particles */
.particle { position: absolute; border-radius: 50%; background: var(--emerald-400); opacity: .3; animation: float 8s ease-in-out infinite; }

@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-30px); } }

/* ===================== PAGE BANNER ===================== */
.page-banner {
  position: relative; padding: 160px 0 80px; text-align: center;
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
  overflow: hidden;
}
.page-banner::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(16,185,129,.12), transparent 60%);
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { color: var(--white); margin-bottom: 16px; animation: fadeInUp .8s ease; }
.page-banner p { color: var(--neutral-300); font-size: 1.1rem; max-width: 600px; margin: 0 auto; animation: fadeInUp .8s ease .2s both; }
.breadcrumb { display: flex; justify-content: center; gap: 8px; margin-top: 24px; color: var(--neutral-400); font-size: .9rem; animation: fadeInUp .8s ease .4s both; }
.breadcrumb a { color: var(--emerald-400); }
.breadcrumb a:hover { text-decoration: underline; }

/* ===================== SERVICES GRID ===================== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.service-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 40px 32px;
  box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; overflow: hidden;
  border: 1px solid var(--neutral-200);
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--emerald-500), var(--gold-500)); transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 72px; height: 72px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(16,185,129,.1), rgba(245,158,11,.1));
  color: var(--emerald-600); margin-bottom: 24px; transition: var(--transition);
}
.service-card:hover .service-icon { background: linear-gradient(135deg, var(--emerald-600), var(--emerald-500)); color: var(--white); transform: rotate(-5deg) scale(1.05); }
.service-icon svg { width: 36px; height: 36px; }
.service-card h3 { margin-bottom: 12px; }
.service-card p { color: var(--neutral-500); font-size: .95rem; margin-bottom: 20px; }
.service-link { color: var(--emerald-600); font-weight: 600; font-size: .9rem; display: inline-flex; align-items: center; gap: 6px; }
.service-link:hover { gap: 12px; color: var(--gold-500); }

/* ===================== STATS BAR ===================== */
.stats-bar {
  background: linear-gradient(135deg, var(--navy-800), var(--navy-900));
  padding: 64px 0; position: relative; overflow: hidden;
}
.stats-bar::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 30% 50%, rgba(16,185,129,.1), transparent 50%); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 2; }
.stat-item { text-align: center; }
.stat-item .num { font-family: var(--font-heading); font-size: 3rem; font-weight: 800; color: var(--emerald-400); }
.stat-item .label { color: var(--neutral-400); font-size: .9rem; text-transform: uppercase; letter-spacing: 1px; margin-top: 8px; }

/* ===================== ABOUT ===================== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-visual { position: relative; }
.about-visual img { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }
.about-experience {
  position: absolute; bottom: -32px; right: -32px; background: var(--white); padding: 32px;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); text-align: center;
}
.about-experience .num { font-family: var(--font-heading); font-size: 3rem; font-weight: 800; color: var(--emerald-600); line-height: 1; }
.about-experience .label { color: var(--neutral-500); font-size: .85rem; margin-top: 4px; }

.about-content h2 { margin-bottom: 24px; }
.about-content .lead { font-size: 1.15rem; color: var(--neutral-600); margin-bottom: 24px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 32px 0; }
.about-feature { display: flex; align-items: flex-start; gap: 12px; }
.about-feature .check { width: 28px; height: 28px; border-radius: 50%; background: var(--emerald-100); color: var(--emerald-600); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: 700; }
.about-feature h4 { font-size: .95rem; margin-bottom: 2px; }
.about-feature p { font-size: .85rem; color: var(--neutral-500); margin: 0; }

/* ===================== TEAM ===================== */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.team-card { text-align: center; transition: var(--transition); }
.team-card:hover { transform: translateY(-8px); }
.team-img { width: 100%; aspect-ratio: 1; border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 20px; box-shadow: var(--shadow-md); }
.team-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.team-card:hover .team-img img { transform: scale(1.08); }
.team-card h4 { margin-bottom: 4px; }
.team-card .role { color: var(--emerald-600); font-weight: 600; font-size: .9rem; }
.team-card .bio { color: var(--neutral-500); font-size: .85rem; margin-top: 8px; }

/* ===================== PROCESS ===================== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-step { text-align: center; position: relative; }
.process-step .step-num {
  width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-size: 1.8rem; font-weight: 800; color: var(--white);
  background: linear-gradient(135deg, var(--navy-700), var(--navy-600));
  box-shadow: var(--shadow-md); transition: var(--transition); position: relative; z-index: 2;
}
.process-step:hover .step-num { background: linear-gradient(135deg, var(--emerald-600), var(--emerald-500)); transform: scale(1.1); box-shadow: var(--shadow-glow); }
.process-step h4 { margin-bottom: 8px; }
.process-step p { color: var(--neutral-500); font-size: .9rem; }

/* ===================== PRESS RELEASE ===================== */
.press-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.press-card {
  background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--neutral-200);
}
.press-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.press-img { width: 100%; height: 240px; overflow: hidden; position: relative; }
.press-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.press-card:hover .press-img img { transform: scale(1.08); }
.press-date {
  position: absolute; top: 16px; left: 16px; background: var(--emerald-600); color: var(--white);
  padding: 8px 16px; border-radius: var(--radius-sm); font-size: .8rem; font-weight: 600;
}
.press-body { padding: 28px; }
.press-body .category { color: var(--gold-500); font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }
.press-body h3 { margin: 8px 0 12px; font-size: 1.3rem; }
.press-body p { color: var(--neutral-500); font-size: .95rem; }

/* ===================== CTA SECTION ===================== */
.cta-section {
  position: relative; padding: 100px 0; text-align: center;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-900)); overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(16,185,129,.15), transparent 60%);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { color: var(--white); margin-bottom: 16px; }
.cta-section p { color: var(--neutral-300); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===================== FORMS ===================== */
.form-wrap { max-width: 720px; margin: 0 auto; background: var(--white); padding: 48px; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-weight: 600; font-size: .9rem; color: var(--neutral-700); margin-bottom: 8px; }
.form-group label .req { color: var(--error); }
.form-control {
  width: 100%; padding: 14px 18px; border: 2px solid var(--neutral-200); border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: 1rem; transition: var(--transition); background: var(--neutral-50);
}
.form-control:focus { outline: none; border-color: var(--emerald-500); background: var(--white); box-shadow: 0 0 0 4px rgba(16,185,129,.1); }
textarea.form-control { min-height: 140px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-msg { padding: 14px 20px; border-radius: var(--radius-md); margin-bottom: 24px; font-weight: 500; display: none; }
.form-msg.success { display: block; background: var(--emerald-100); color: var(--emerald-600); border: 1px solid var(--emerald-400); }
.form-msg.error { display: block; background: #fee2e2; color: var(--error); border: 1px solid #fca5a5; }
.form-loader { display: none; width: 24px; height: 24px; border: 3px solid var(--neutral-200); border-top-color: var(--emerald-600); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.contact-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 48px; }
.contact-info-card {
  background: var(--white); padding: 32px; border-radius: var(--radius-lg); text-align: center;
  box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--neutral-200);
}
.contact-info-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.contact-info-card .icon { width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--emerald-600), var(--emerald-500)); color: var(--white); }
.contact-info-card .icon svg { width: 26px; height: 26px; }
.contact-info-card h4 { margin-bottom: 8px; }
.contact-info-card p { color: var(--neutral-500); font-size: .95rem; margin: 0; }

/* ===================== MAP ===================== */
.map-wrap { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); margin-top: 48px; }
.map-wrap iframe { width: 100%; height: 400px; border: 0; display: block; }

/* ===================== TESTIMONIALS ===================== */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.testimonial-card {
  background: var(--white); padding: 36px; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--neutral-200); position: relative;
}
.testimonial-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.testimonial-card .quote-mark { font-size: 3rem; color: var(--emerald-200); line-height: 1; font-family: Georgia, serif; }
.testimonial-card .stars { color: var(--gold-500); margin-bottom: 16px; font-size: 1.1rem; letter-spacing: 2px; }
.testimonial-card p { color: var(--neutral-600); font-style: italic; margin-bottom: 24px; }
.testimonial-author { display: flex; align-items: center; gap: 16px; }
.testimonial-author img { width: 52px; height: 52px; border-radius: 50%; object-fit: cover; }
.testimonial-author h4 { font-size: 1rem; margin-bottom: 2px; }
.testimonial-author .role { color: var(--emerald-600); font-size: .85rem; font-weight: 500; }

/* ===================== FAQ ===================== */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--white); border-radius: var(--radius-md); margin-bottom: 16px; overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.faq-item.active { box-shadow: var(--shadow-md); }
.faq-question { padding: 24px 28px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-family: var(--font-heading); font-weight: 600; font-size: 1.05rem; color: var(--navy-800); }
.faq-question .toggle { width: 32px; height: 32px; border-radius: 50%; background: var(--neutral-100); display: flex; align-items: center; justify-content: center; transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-question .toggle { background: var(--emerald-600); color: var(--white); transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease, padding .4s ease; padding: 0 28px; }
.faq-item.active .faq-answer { max-height: 300px; padding: 0 28px 24px; }
.faq-answer p { color: var(--neutral-500); }

/* ===================== VIDEO SECTION ===================== */
.video-section { position: relative; padding: 100px 0; background: var(--navy-900); overflow: hidden; }
.video-section::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(16,185,129,.1), transparent 60%); }
.video-wrap { max-width: 900px; margin: 0 auto; position: relative; z-index: 2; }
.video-wrap h2 { color: var(--white); text-align: center; margin-bottom: 16px; }
.video-wrap > p { text-align: center; color: var(--neutral-300); margin-bottom: 40px; }
.video-container { position: relative; border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-xl); aspect-ratio: 16/9; }
.video-container video, .video-container iframe { width: 100%; height: 100%; object-fit: cover; border: 0; }

/* ===================== WHATSAPP FLOAT ===================== */
.whatsapp-float {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  width: 64px; height: 64px; border-radius: 50%; background: #25d366;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 8px 24px rgba(37,211,102,.4); animation: waBlink 1.5s ease-in-out infinite;
}
.whatsapp-float svg { width: 36px; height: 36px; fill: var(--white); }
.whatsapp-float:hover { transform: scale(1.1); }
.whatsapp-tooltip {
  position: absolute; right: 76px; top: 50%; transform: translateY(-50%);
  background: var(--navy-800); color: var(--white); padding: 10px 18px; border-radius: var(--radius-md);
  white-space: nowrap; font-size: .85rem; font-weight: 500; opacity: 0; pointer-events: none; transition: var(--transition);
}
.whatsapp-tooltip::after { content: ''; position: absolute; right: -6px; top: 50%; transform: translateY(-50%); border: 6px solid transparent; border-left-color: var(--navy-800); }
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; }
@keyframes waBlink {
  0%, 100% { box-shadow: 0 8px 24px rgba(37,211,102,.4), 0 0 0 0 rgba(37,211,102,.6); }
  50% { box-shadow: 0 8px 24px rgba(37,211,102,.4), 0 0 0 16px rgba(37,211,102,0); }
}

/* ===================== FOOTER ===================== */
.footer { background: var(--navy-900); color: var(--neutral-400); padding-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 56px; }
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p { font-size: .95rem; line-height: 1.7; margin-bottom: 24px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,.08); display: flex; align-items: center; justify-content: center; color: var(--neutral-300); }
.footer-social a:hover { background: var(--emerald-600); color: var(--white); transform: translateY(-3px); }
.footer-social a svg { width: 18px; height: 18px; }
.footer-col h4 { color: var(--white); font-size: 1.05rem; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: .9rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--emerald-400); padding-left: 6px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; font-size: .9rem; }
.footer-contact svg { width: 18px; height: 18px; color: var(--emerald-400); flex-shrink: 0; margin-top: 3px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 24px 0; text-align: center; font-size: .85rem; }
.footer-bottom a { color: var(--emerald-400); }

/* ===================== SCROLL REVEAL ===================== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* ===================== BACK TO TOP ===================== */
.back-top {
  position: fixed; bottom: 100px; right: 24px; z-index: 998;
  width: 48px; height: 48px; border-radius: 50%; background: var(--navy-700); color: var(--white);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  opacity: 0; pointer-events: none; transition: var(--transition); box-shadow: var(--shadow-md);
}
.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--emerald-600); transform: translateY(-4px); }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1024px) {
  .services-grid, .team-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav, .header-cta .call-cta { display: none; }
  .menu-toggle { display: flex; }
  .nav.mobile-open {
    display: flex; flex-direction: column; position: fixed; top: 70px; left: 0; width: 100%;
    background: var(--navy-900); padding: 32px; gap: 20px; box-shadow: var(--shadow-lg);
  }
  .hero { min-height: auto; padding-top: 120px; padding-bottom: 60px; }
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 2rem; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-features { grid-template-columns: 1fr; }
  .about-experience { right: 16px; bottom: -24px; padding: 20px; }
  .services-grid, .team-grid, .testimonial-grid, .press-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .contact-info-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .form-wrap { padding: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 64px 0; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .whatsapp-float { width: 56px; height: 56px; bottom: 16px; right: 16px; }
  .back-top { bottom: 84px; right: 16px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .hero-stat { text-align: center; }
  .hero-stats { justify-content: center; }
}