:root {
  --carbon: #121212;
  --white: #ffffff;
  --eco: #00e676;
  --grey: #b0bec5;
  --line: #283239;
  --ink-dark: #0f1c16;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Inter", "Segoe UI", sans-serif;
  background: #0d0f10;
  color: var(--white);
  line-height: 1.6;
}

.header {
  position: sticky;
  top: 0;
  z-index: 12;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 28px;
  background: rgba(18,18,18,.88);
  border-bottom: 1px solid #222a2f;
  backdrop-filter: blur(8px);
}

.logo {
  text-decoration: none;
  font-family: "Montserrat", sans-serif;
  font-weight: 700;
  letter-spacing: .02em;
  font-size: 1.2rem;
  color: #fff;
}
.logo span { color: var(--eco); font-weight: 800; }

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
}
.nav a {
  text-decoration: none;
  color: #e7eef2;
  font-weight: 500;
  font-size: .95rem;
}
.nav a:hover { color: var(--eco); }
.nav a.active { color: var(--eco); }

.lang {
  border: 1px solid #3a464f;
  padding: 7px 10px;
  border-radius: 6px;
}

.btn {
  border: 0;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-outline {
  border: 1px solid var(--eco);
  color: var(--eco) !important;
  padding: 8px 12px;
  border-radius: 7px;
}

.btn-solid {
  background: var(--eco);
  color: var(--ink-dark);
  padding: 12px 16px;
  border-radius: 7px;
}

.menu-toggle {
  display: none;
  background: #1b2328;
  color: #fff;
  border: 1px solid #36434c;
  border-radius: 6px;
  padding: 8px 12px;
}

.hero {
  position: relative;
  min-height: 84vh;
  display: flex;
  align-items: center;
  padding: 90px 28px 60px;
  background:
    linear-gradient(rgba(255,255,255,.42), rgba(255,255,255,.30)),
    radial-gradient(circle at 12% 20%, rgba(255,255,255,.35), transparent 42%),
    url("/media/apreman-hero.jpg") center center/cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,255,255,.18), rgba(180,206,224,.08));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1040px;
  margin: 0 auto;
  width: 100%;
}

.kicker {
  display: inline-block;
  background: rgba(255,255,255,.76);
  border: 1px solid #8db8d6;
  color: #0f669f;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .78rem;
  letter-spacing: .08em;
  font-weight: 700;
}

.hero h1 {
  margin: 16px 0 14px;
  font-family: "Montserrat", sans-serif;
  font-size: clamp(2.1rem, 5.2vw, 4.5rem);
  line-height: 1.03;
  color: #14588d;
  text-shadow: 0 1px 0 rgba(255,255,255,.65);
}

.sub {
  max-width: 760px;
  color: #2b5f86;
  font-size: 1.12rem;
  font-weight: 500;
}

.search-box {
  margin-top: 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  background: rgba(255,255,255,.88);
  border: 1px solid #b8ccd9;
  border-radius: 10px;
  padding: 10px;
  max-width: 900px;
}

.search-icon { font-size: 1.1rem; color: #5e7f97; padding: 0 4px; }

.search-box input {
  width: 100%;
  border: 0;
  background: transparent;
  color: #1f4764;
  font-size: 1rem;
  outline: none;
}
.search-box input::placeholder { color: #678197; }

.tags {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tags span {
  padding: 5px 9px;
  font-size: .82rem;
  border: 1px solid #b4c8d6;
  border-radius: 999px;
  color: #2f5f83;
  background: rgba(255,255,255,.80);
}

.section {
  padding: 68px 28px;
}

.section h2 {
  margin: 0 0 20px;
  font-family: "Montserrat", sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.45rem);
  color: inherit;
}
.container {
  max-width: 1120px;
  margin: 0 auto;
}
.page-hero {
  padding: 52px 28px 24px;
  background: #131a1f;
  border-bottom: 1px solid #233039;
}
.page-hero .container p {
  color: #adc0cc;
  max-width: 760px;
}
.jump-links {
  margin-top: 14px;
}
.jump-links a {
  color: #0e5b95;
  text-decoration: none;
  font-weight: 600;
}

.light {
  background: #ffffff;
  color: #12232e;
}
.light p { color: #4e6574; }

.dark {
  background: #12171b;
  color: #f5fbff;
}
.dark p { color: #adbec8; }

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.value-card {
  border: 1px solid #d7e0e6;
  border-radius: 10px;
  padding: 18px;
  background: linear-gradient(165deg, #fff, #f6fafc);
}

.value-card h3 {
  margin: 0 0 8px;
  font-family: "Montserrat", sans-serif;
  font-size: 1.03rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.category-card {
  border: 1px solid #2b373f;
  border-radius: 10px;
  overflow: hidden;
  background: #171d22;
}

.category-image {
  height: 190px;
  background-size: cover;
  background-position: center;
}
.image-engine { background-image: linear-gradient(rgba(0,0,0,.35),rgba(0,0,0,.35)), url("https://images.unsplash.com/photo-1619642751034-765dfdf7c58e?auto=format&fit=crop&w=1200&q=80"); }
.image-trans { background-image: linear-gradient(rgba(0,0,0,.35),rgba(0,0,0,.35)), url("https://images.unsplash.com/photo-1487754180451-c456f719a1fc?auto=format&fit=crop&w=1200&q=80"); }
.image-turbo { background-image: linear-gradient(rgba(0,0,0,.35),rgba(0,0,0,.35)), url("https://images.unsplash.com/photo-1615906655593-ad0386982a0f?auto=format&fit=crop&w=1200&q=80"); }

.category-card h3 {
  margin: 0;
  padding: 14px;
  font-family: "Montserrat", sans-serif;
  font-size: 1.05rem;
}

.more { margin-top: 14px; color: #aab8c1 !important; }

.grade-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.grade-card {
  border: 1px solid #d9e3ea;
  border-radius: 10px;
  padding: 18px;
  background: #f9fcff;
}
.grade-card h3 {
  margin: 0 0 8px;
  font-family: "Montserrat", sans-serif;
  font-size: 1.02rem;
}
.grade-card ul { margin: 0; padding-left: 18px; color: #4b6677; }
.grade-card.rejected {
  border-color: #efc8c8;
  background: #fff7f7;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
}

.subscribe label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}
.subscribe > div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.subscribe input {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #cfdce5;
  font-size: 1rem;
}

.contact-info a { color: #1f5f9d; }

.footer {
  background: #0f1214;
  color: #8da0ab;
  text-align: center;
  padding: 20px;
  border-top: 1px solid #20282d;
}

@media (max-width: 980px) {
  .value-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid, .grade-grid { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .menu-toggle { display: inline-block; }
  .nav {
    display: none;
    position: absolute;
    right: 16px;
    top: 58px;
    background: #14191d;
    border: 1px solid #2c3840;
    border-radius: 10px;
    padding: 12px;
    flex-direction: column;
    align-items: flex-start;
    min-width: 220px;
  }
  .nav.open { display: flex; }
  .search-box {
    grid-template-columns: 1fr;
  }
  .search-icon { display: none; }
  .btn-solid { width: 100%; }
}