/* ===== VARIABLES ===== */
:root {
  --blue-light: #29B6F6;
  --blue-main: #1565C0;
  --blue-dark: #0D2E7D;
  --violet: #6C27C0;
  --violet-dark: #4A1A8A;
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-500: #64748B;
  --gray-700: #334155;
  --gray-900: #0F172A;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.14);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Inter', sans-serif; color: var(--gray-700); background: var(--white); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
input, select, textarea, button { font-family: inherit; }

/* ===== CONTAINER ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== SECTION UTILS ===== */
.section { padding: 96px 0; }
.section__head { text-align: center; margin-bottom: 64px; }
.section__tag {
  display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .12em;
  color: var(--blue-main); background: rgba(21,101,192,.08);
  padding: 6px 16px; border-radius: 100px; margin-bottom: 16px;
}
.section__title { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 800; color: var(--gray-900); line-height: 1.25; margin-bottom: 16px; }
.section__desc { font-size: 1.05rem; color: var(--gray-500); max-width: 600px; margin: 0 auto; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 100px; font-weight: 600; font-size: .9rem;
  border: 2px solid transparent; cursor: pointer; transition: var(--transition);
  white-space: nowrap;
}
.btn--primary { background: var(--violet); color: var(--white); border-color: var(--violet); }
.btn--primary:hover { background: var(--violet-dark); border-color: var(--violet-dark); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(108,39,192,.35); }
.btn--outline { background: transparent; color: var(--blue-dark); border-color: var(--blue-dark); }
.btn--outline:hover { background: var(--blue-dark); color: var(--white); }
.btn--ghost { background: rgba(255,255,255,.15); color: var(--white); border-color: rgba(255,255,255,.4); backdrop-filter: blur(4px); }
.btn--ghost:hover { background: rgba(255,255,255,.25); border-color: rgba(255,255,255,.7); }
.btn--sm { padding: 8px 16px; font-size: .82rem; }
.btn--lg { padding: 14px 32px; font-size: 1rem; }
.btn--full { width: 100%; justify-content: center; }

/* ===== HEADER ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }
.nav { display: flex; align-items: center; height: 80px; gap: 32px; }
.nav__logo { display: flex; align-items: center; flex-shrink: 0; }
.nav__menu { display: flex; align-items: center; gap: 4px; flex: 1; }
.nav__link {
  display: flex; align-items: center; gap: 4px; padding: 8px 14px;
  font-size: .9rem; font-weight: 500; color: var(--gray-700);
  border-radius: var(--radius-sm); transition: var(--transition);
}
.nav__link:hover, .nav__link.active { color: var(--blue-main); background: rgba(21,101,192,.07); }
.chevron { font-size: .7rem; transition: transform var(--transition); }

/* Dropdown */
.nav__item--dropdown { position: relative; }
.nav__item--dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav__item--dropdown:hover .chevron { transform: rotate(180deg); }
.dropdown {
  position: absolute; top: calc(100% + 8px); left: 0;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  min-width: 220px; padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all var(--transition);
}
.dropdown li a {
  display: block; padding: 9px 14px; border-radius: var(--radius-sm);
  font-size: .875rem; color: var(--gray-700); transition: var(--transition);
}
.dropdown li a:hover { color: var(--blue-main); background: var(--gray-50); }
.nav__actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav__burger span { display: block; width: 24px; height: 2px; background: var(--gray-700); border-radius: 2px; transition: var(--transition); }

/* ===== HERO ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--blue-dark) 0%, #1a237e 40%, #4527A0 100%);
  overflow: hidden; padding-top: 72px;
}
.hero__overlay {
  position: absolute; inset: 0;
  background: url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?w=1600&q=80') center/cover no-repeat;
  opacity: .12;
}
.hero__shapes { position: absolute; inset: 0; pointer-events: none; }
.shape {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,.04);
}
.shape--1 { width: 600px; height: 600px; top: -200px; right: -100px; }
.shape--2 { width: 400px; height: 400px; bottom: -150px; left: -80px; }

/* Geometric accent like the screenshot */
.hero::after {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 45%; height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(108,39,192,.3) 50%, rgba(108,39,192,.5) 100%);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
}

.hero__content { position: relative; z-index: 2; max-width: 680px; }
.hero__badge {
  display: inline-block; padding: 8px 20px; border-radius: 100px;
  background: var(--white); color: var(--blue-main); font-size: .8rem; font-weight: 700; letter-spacing: .1em;
  margin-bottom: 24px; box-shadow: var(--shadow-sm);
}
.hero__title { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800; color: var(--white); line-height: 1.15; margin-bottom: 20px; }
.hero__sub { font-size: 1.05rem; color: rgba(255,255,255,.8); max-width: 520px; margin-bottom: 36px; line-height: 1.7; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 2;
}
.hero__scroll span {
  display: block; width: 2px; height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,.8), transparent);
  margin: 0 auto; border-radius: 2px;
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse { 0%,100% { opacity: 1; transform: scaleY(1); } 50% { opacity: .4; transform: scaleY(.6); } }

/* ===== STATS ===== */
.stats {
  background: var(--blue-dark);
  padding: 48px 0;
}
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat { text-align: center; }
.stat__number {
  display: block; font-size: 3rem; font-weight: 800;
  background: linear-gradient(135deg, var(--blue-light), var(--white));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
}
.stat__number::after { content: '+'; }
.stat__label { display: block; margin-top: 8px; font-size: .875rem; color: rgba(255,255,255,.7); font-weight: 500; }

/* ===== ABOUT ===== */
.about { background: var(--gray-50); }
.about__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about__visual { position: relative; min-height: 340px; }
.about__bg-shape {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--blue-light), var(--blue-main));
  border-radius: 24px; opacity: .12;
  transform: rotate(-4deg);
}
.about__card {
  position: absolute; background: var(--white); border-radius: var(--radius);
  padding: 20px 24px; box-shadow: var(--shadow-md);
  display: flex; flex-direction: column; gap: 4px;
}
.about__card--1 { top: 24px; left: 0; min-width: 200px; }
.about__card--2 { bottom: 24px; right: 0; min-width: 200px; }
.about__icon { font-size: 1.5rem; }
.about__card strong { color: var(--gray-900); font-size: .95rem; }
.about__card p { font-size: .82rem; color: var(--gray-500); }
.about__list { margin: 20px 0 28px; display: flex; flex-direction: column; gap: 10px; }
.about__list li { display: flex; align-items: center; gap: 10px; font-size: .9rem; }
.check { color: var(--blue-main); font-weight: 700; flex-shrink: 0; }

/* ===== SERVICES ===== */
.services { background: var(--white); }
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service-card {
  background: var(--gray-50); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 32px;
  transition: var(--transition);
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--blue-light); }
.service-card__icon { font-size: 2rem; margin-bottom: 16px; }
.service-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--gray-900); margin-bottom: 12px; }
.service-card p { font-size: .9rem; color: var(--gray-500); margin-bottom: 16px; line-height: 1.65; }
.service-card ul { display: flex; flex-direction: column; gap: 6px; }
.service-card ul li { font-size: .85rem; color: var(--gray-700); padding-left: 16px; position: relative; }
.service-card ul li::before { content: '→'; position: absolute; left: 0; color: var(--blue-main); font-size: .75rem; }

/* ===== EXPERTISES ===== */
.expertises { background: var(--gray-50); }
.expertises__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.expertise-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 32px;
  transition: var(--transition); display: flex; flex-direction: column; gap: 12px;
}
.expertise-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.expertise-card:hover { border-top: 3px solid var(--blue-main); }
.expertise-card--coming { opacity: .75; }
.expertise-card__header { display: flex; align-items: center; gap: 14px; margin-bottom: 4px; }
.expertise-card__icon { font-size: 1.8rem; }
.expertise-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--gray-900); }
.expertise-card p { font-size: .875rem; color: var(--gray-500); line-height: 1.65; }
.expertise-list { display: flex; flex-direction: column; gap: 5px; margin-top: 4px; }
.expertise-list li { font-size: .85rem; color: var(--gray-700); padding-left: 14px; position: relative; }
.expertise-list li::before { content: '▸'; position: absolute; left: 0; color: var(--blue-main); }
.expertise-card__link { margin-top: auto; font-size: .875rem; font-weight: 600; color: var(--blue-main); transition: var(--transition); }
.expertise-card__link:hover { color: var(--violet); }
.badge { display: inline-block; padding: 4px 12px; border-radius: 100px; font-size: .75rem; font-weight: 600; }
.badge--soon { background: rgba(108,39,192,.1); color: var(--violet); }

/* ===== MODES ===== */
.modes {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-main));
  padding: 80px 0;
}
.modes .section__tag { color: var(--blue-light); background: rgba(41,182,246,.15); }
.modes .section__title { color: var(--white); }
.modes .section__desc { color: rgba(255,255,255,.7); }
.modes__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.mode-card {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius); padding: 36px 28px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.mode-card:hover { background: rgba(255,255,255,.14); transform: translateY(-4px); }
.mode-card__num { font-size: 3rem; font-weight: 800; color: rgba(255,255,255,.2); line-height: 1; margin-bottom: 16px; }
.mode-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--white); margin-bottom: 12px; }
.mode-card p { font-size: .9rem; color: rgba(255,255,255,.75); line-height: 1.65; }

/* ===== CAREERS ===== */
.careers { background: var(--gray-50); }
.careers__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.careers__text { display: flex; flex-direction: column; gap: 16px; }
.careers__text p { color: var(--gray-500); line-height: 1.7; }
.careers__visual { display: flex; flex-direction: column; gap: 16px; }
.careers__card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 20px 24px;
  display: flex; gap: 16px; align-items: flex-start;
  transition: var(--transition);
}
.careers__card:hover { box-shadow: var(--shadow-md); border-color: var(--blue-light); }
.careers__icon { font-size: 1.5rem; flex-shrink: 0; }
.careers__card h4 { font-size: .95rem; font-weight: 700; color: var(--gray-900); margin-bottom: 4px; }
.careers__card p { font-size: .83rem; color: var(--gray-500); }

/* ===== CONTACT ===== */
.contact { background: var(--white); }
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.contact__info { display: flex; flex-direction: column; gap: 16px; }
.contact__info > p { color: var(--gray-500); line-height: 1.7; }
.contact__details { display: flex; flex-direction: column; gap: 20px; margin-top: 8px; }
.contact__item { display: flex; gap: 16px; align-items: flex-start; }
.contact__icon { font-size: 1.25rem; flex-shrink: 0; margin-top: 2px; }
.contact__item strong { display: block; font-size: .875rem; font-weight: 700; color: var(--gray-900); margin-bottom: 4px; }
.contact__item p { font-size: .875rem; color: var(--gray-500); line-height: 1.6; }
.contact__item a { color: var(--blue-main); }
.contact__item a:hover { text-decoration: underline; }

/* Form */
.contact__form {
  background: var(--gray-50); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 40px;
}
.contact__form h3 { font-size: 1.15rem; font-weight: 700; color: var(--gray-900); margin-bottom: 24px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form__group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form__group label { font-size: .8rem; font-weight: 600; color: var(--gray-700); }
.form__group input,
.form__group select,
.form__group textarea {
  padding: 10px 14px; border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm); font-size: .9rem;
  background: var(--white); color: var(--gray-900);
  transition: var(--transition); outline: none;
}
.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus { border-color: var(--blue-main); box-shadow: 0 0 0 3px rgba(21,101,192,.1); }
.form__group textarea { resize: vertical; min-height: 120px; }
.form__msg { margin-top: 12px; padding: 12px 16px; border-radius: var(--radius-sm); font-size: .875rem; font-weight: 500; }
.form__msg--success { background: #E8F5E9; color: #2E7D32; border: 1px solid #A5D6A7; }
.form__msg--error { background: #FFEBEE; color: #C62828; border: 1px solid #FFCDD2; }

/* ===== FOOTER ===== */
.footer { background: var(--gray-900); color: rgba(255,255,255,.7); padding: 72px 0 0; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; margin-bottom: 48px; }
.footer__brand { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.footer__brand img { display: block; }
.footer__brand p { font-size: .875rem; line-height: 1.7; max-width: 280px; text-align: left; }
.footer__col h4 { font-size: .9rem; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col ul li { font-size: .875rem; }
.footer__col a { color: rgba(255,255,255,.6); transition: var(--transition); }
.footer__col a:hover { color: var(--blue-light); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
}
.footer__bottom p { font-size: .82rem; color: rgba(255,255,255,.4); }
.footer__bottom a { color: rgba(255,255,255,.5); }
.footer__bottom a:hover { color: var(--white); }

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed; bottom: 32px; right: 32px; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--violet); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700;
  box-shadow: var(--shadow-md); transition: var(--transition);
  opacity: 0; pointer-events: none;
}
.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { background: var(--violet-dark); transform: translateY(-2px); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .about__grid, .careers__inner, .contact__grid { grid-template-columns: 1fr; gap: 48px; }
  .about__visual { min-height: 240px; }
  .expertises__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .services__grid, .expertises__grid, .modes__grid { grid-template-columns: 1fr; }
  .nav__menu, .nav__actions .btn--outline { display: none; }
  .nav__menu.open { display: flex; flex-direction: column; position: fixed; top: 72px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--gray-200); padding: 16px; gap: 4px; box-shadow: var(--shadow-lg); }
  .nav__burger { display: flex; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; background: var(--gray-50); }
  .hero__actions { flex-direction: column; }
  .form__row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .contact__form { padding: 24px; }
  .hero { min-height: auto; padding: 140px 0 80px; }
}

@media (max-width: 480px) {
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .stat__number { font-size: 2.25rem; }
}