/* =========================
   RVSA Telecom - Draft v1
   ========================= */

:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #101828;
  --muted: #667085;
  --border: #e4e7ec;
  --primary: #2156f3;
  --primary-dark: #1742be;
  --dark: #0c1425;
  --dark-2: #121d34;
  --accent-soft: #eaf0ff;
  --radius: 18px;
  --shadow: 0 20px 50px rgba(16, 24, 40, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--text);
  background: var(--surface);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(228, 231, 236, 0.8);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 600;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--primary);
  font-weight: 800;
}

.brand strong {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.94rem;
  font-weight: 500;
}

.nav-links > a:not(.btn):hover {
  color: var(--primary);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 0;
  border-radius: 12px;
  background: var(--primary);
  color: white;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-sm {
  min-height: 42px;
  padding: 0 17px;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg);
  color: var(--text);
}

/* Hero */

.hero {
  padding: 92px 0 78px;
  background:
    radial-gradient(circle at 90% 10%, rgba(33, 86, 243, 0.15), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, #f7f9fd 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.78rem;
  font-weight: 800;
}

.hero h1,
.section-heading h2,
.split h2,
.audit h2,
.contact-section h2 {
  margin: 0;
  letter-spacing: -0.04em;
  line-height: 1.07;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 5.3rem);
  max-width: 780px;
}

.hero h1 span {
  color: var(--primary);
}

.hero-text {
  max-width: 720px;
  margin: 28px 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-points {
  margin-top: 26px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: #475467;
  font-size: 0.9rem;
}

.hero-card {
  padding: 34px;
  border-radius: 26px;
  background: var(--dark);
  color: white;
  box-shadow: 0 32px 70px rgba(12, 20, 37, 0.22);
}

.card-kicker {
  color: #9db7ff;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-card h2 {
  margin: 12px 0 12px;
  font-size: 2rem;
  line-height: 1.15;
}

.hero-card p {
  color: #c8d1e2;
}

.metric {
  margin: 28px 0;
  display: grid;
  gap: 14px;
}

.metric > div {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.metric strong {
  color: #9db7ff;
}

.metric span {
  color: #edf2ff;
}

.text-link {
  color: #b8c9ff;
  font-weight: 700;
}

/* Trust strip */

.trust {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: white;
}

.trust-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.trust-inner p {
  font-weight: 700;
}

.trust-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.trust-tags span {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--bg);
  color: #475467;
  font-size: 0.86rem;
}

/* Sections */

.section {
  padding: 104px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-heading h2,
.split h2,
.audit h2,
.contact-section h2 {
  font-size: clamp(2.3rem, 4vw, 4rem);
}

.section-heading p,
.audit p,
.contact-section p {
  color: var(--muted);
  font-size: 1.05rem;
}

/* Solutions */

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.solution-card {
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 30px rgba(16, 24, 40, 0.035);
}

.solution-card .icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 12px;
  color: var(--primary);
  background: var(--accent-soft);
  font-size: 1.25rem;
  font-weight: 700;
}

.solution-card h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.solution-card p {
  color: var(--muted);
  font-size: 0.94rem;
}

.solution-card ul {
  padding-left: 18px;
  margin: 20px 0 0;
  color: #475467;
  font-size: 0.9rem;
}

/* Dark section */

.section-dark {
  color: white;
  background: var(--dark);
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
}

.eyebrow-light {
  color: #9db7ff;
}

.steps {
  display: grid;
  gap: 10px;
}

.step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  padding: 22px;
  border-radius: 16px;
  background: var(--dark-2);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.step > span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #b8c9ff;
  background: rgba(157, 183, 255, 0.12);
  font-weight: 800;
}

.step h3 {
  margin: 0 0 5px;
}

.step p {
  margin: 0;
  color: #adb9cc;
}

/* Audit */

.audit {
  background: var(--bg);
}

.audit-box {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  padding: 58px;
  border-radius: 28px;
  background: white;
  box-shadow: var(--shadow);
}

.audit-list {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 13px;
}

.audit-list p {
  margin: 0 0 6px;
  color: var(--text);
}

.audit-list span {
  color: #475467;
}

.audit-list .btn {
  margin-top: 12px;
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 70px;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: 0 12px 34px rgba(16, 24, 40, 0.05);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  font-size: 0.88rem;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid #d0d5dd;
  border-radius: 10px;
  padding: 13px 14px;
  font: inherit;
  color: var(--text);
  background: white;
}

input:focus,
textarea:focus {
  outline: 3px solid rgba(33, 86, 243, 0.12);
  border-color: var(--primary);
}

textarea {
  resize: vertical;
}

.contact-form small {
  color: var(--muted);
}

/* Footer */

.footer {
  padding: 58px 0 26px;
  background: #080f1d;
  color: white;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-grid > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 9px;
}

.footer-grid p,
.footer-grid a,
.footer-bottom {
  color: #9aa7bc;
  font-size: 0.9rem;
}

.brand-footer {
  margin-bottom: 8px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin: 0;
}

/* Responsive */

@media (max-width: 980px) {
  .nav-links a:not(.btn) {
    display: none;
  }

  .hero-grid,
  .split,
  .audit-box,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    padding-top: 70px;
  }

  .trust-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 24px 0;
  }

  .trust-tags {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .site-header .nav {
    min-height: 68px;
  }

  .hero {
    padding: 56px 0;
  }

  .hero h1 {
    font-size: 2.75rem;
  }

  .hero-card,
  .audit-box,
  .contact-form {
    padding: 22px;
  }

  .section {
    padding: 74px 0;
  }

  .cards,
  .form-row,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .nav .btn {
    min-height: 38px;
    padding: 0 13px;
    font-size: 0.82rem;
  }
}