/* ============================================================
   TELVOI — Corporate Website Stylesheet
   Colors: #0A2647 (navy) | #20E2D7 (cyan) | #2C3333 (dark) | #6B7280 (gray)
   ============================================================ */

:root {
  --navy:    #0A2647;
  --cyan:    #20E2D7;
  --dark:    #2C3333;
  --gray:    #6B7280;
  --light:   #F4F7FA;
  --white:   #FFFFFF;
  --border:  #E2E8F0;
  --navy-80: rgba(10, 38, 71, 0.08);

  --font:    'Inter', sans-serif;
  --radius:  12px;
  --radius-sm: 6px;
  --transition: 0.25s ease;
  --shadow:  0 4px 24px rgba(10, 38, 71, 0.10);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Typography ── */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; color: var(--navy); }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  display: block;
  margin-bottom: 12px;
}

.section-title { margin-bottom: 16px; }

.section-sub {
  color: var(--gray);
  font-size: 1.05rem;
  max-width: 560px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--cyan);
  color: var(--navy);
}
.btn-primary:hover { background: #17c7bc; transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.35);
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }

.btn-navy {
  background: var(--navy);
  color: var(--white);
}
.btn-navy:hover { background: #0d3260; transform: translateY(-1px); }

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo img {
  height: 50px;
  width: auto;
  max-width: 320px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dark);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cyan);
  transition: var(--transition);
}

.nav-links a:hover { color: var(--navy); }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.nav-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

/* ── Language Switcher ── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--navy-80);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.lang-btn {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  background: transparent;
  color: var(--gray);
  letter-spacing: 0.05em;
  transition: var(--transition);
  text-decoration: none;
}

.lang-btn.active {
  background: var(--navy);
  color: var(--white);
}

.lang-btn:hover:not(.active) { color: var(--navy); }

/* ── Hero ── */
.hero {
  background: var(--navy);
  padding: 56px 0 48px;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(32,226,215,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(32,226,215,0.12);
  border: 1px solid rgba(32,226,215,0.25);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--cyan);
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
}

.hero h1 { color: var(--white); margin-bottom: 20px; }
.hero h1 span { color: var(--cyan); }

.hero-sub {
  color: rgba(255,255,255,0.72);
  font-size: 0.9rem;
  margin-bottom: 20px;
  max-width: 480px;
}

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

.hero-trust {
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.hero-trust-text {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.4;
}

.hero-trust-stars { color: var(--cyan); font-size: 0.9rem; letter-spacing: 1px; }

/* ── Hero Illustration ── */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
}

.hero-illustration {
  width: 100%;
  max-width: 540px;
  max-height: none;
  height: auto;
  object-fit: contain;
  animation: hero-float 6s ease-in-out infinite;
}

@keyframes hero-float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}

/* ── Sections ── */
.section { padding: 96px 0; }
.section-alt { background: var(--light); }
.section-dark { background: var(--navy); }

.section-header { margin-bottom: 56px; }
.section-header.centered {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Problem/Solution ── */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.problem-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: var(--transition);
}

.problem-card:hover { border-color: var(--cyan); transform: translateY(-2px); }

.problem-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(10,38,71,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.problem-icon svg { width: 22px; height: 22px; color: var(--navy); }

.problem-card h4 { margin-bottom: 6px; color: var(--navy); }
.problem-card p  { font-size: 0.9rem; color: var(--gray); line-height: 1.55; }

/* ── Features ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  padding: 32px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--white);
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.feature-icon {
  width: 52px; height: 52px;
  background: rgba(32,226,215,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg { width: 26px; height: 26px; color: var(--navy); }

.feature-card h3 { margin-bottom: 10px; font-size: 1.05rem; }
.feature-card p  { font-size: 0.88rem; color: var(--gray); line-height: 1.6; }

/* ── Pricing ── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  background: var(--white);
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover { border-color: var(--navy); }

.pricing-card.featured {
  border-color: var(--cyan);
  background: var(--navy);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cyan);
  color: var(--navy);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 100px;
  white-space: nowrap;
  letter-spacing: 0.05em;
}

.pricing-name {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 8px;
}

.pricing-card.featured .pricing-name { color: rgba(255,255,255,0.55); }

.pricing-price {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
  margin-bottom: 4px;
}

.pricing-card.featured .pricing-price { color: var(--white); }

.pricing-price sup {
  font-size: 1.2rem;
  font-weight: 600;
  vertical-align: super;
  margin-right: 2px;
}

.pricing-period {
  font-size: 0.8rem;
  color: var(--gray);
  margin-bottom: 24px;
}

.pricing-card.featured .pricing-period { color: rgba(255,255,255,0.45); }

.pricing-divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

.pricing-card.featured .pricing-divider { background: rgba(255,255,255,0.12); }

.pricing-features { margin-bottom: 28px; }
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--dark);
  margin-bottom: 12px;
}

.pricing-card.featured .pricing-features li { color: rgba(255,255,255,0.8); }

.pricing-features li .check {
  width: 16px; height: 16px;
  flex-shrink: 0;
  color: var(--cyan);
  margin-top: 2px;
}

.pricing-sub {
  font-size: 0.78rem;
  color: var(--gray);
  margin-top: 4px;
}
.pricing-card.featured .pricing-sub { color: rgba(255,255,255,0.35); }

/* ── How it works ── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(16.66% + 24px);
  right: calc(16.66% + 24px);
  height: 1px;
  background: var(--border);
}

.step-card { text-align: center; position: relative; }

.step-number {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
}

.step-card h3 { margin-bottom: 10px; font-size: 1rem; }
.step-card p  { font-size: 0.88rem; color: var(--gray); line-height: 1.6; }

.qr-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  background: rgba(10,38,71,0.06);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--navy);
}

/* ── Stats ── */
.stats-section {
  background: var(--navy);
  padding: 64px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item {}
.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
}

/* ── CTA Banner ── */
.cta-banner {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin: 80px 0;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 500px; height: 300px;
  background: radial-gradient(ellipse, rgba(32,226,215,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner h2 { color: var(--white); margin-bottom: 14px; }
.cta-banner p { color: rgba(255,255,255,0.6); margin-bottom: 32px; font-size: 1.05rem; }
.cta-banner .btn-cta-group { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Sectors Strip ── */
.sectors-strip {
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--light);
}

.sectors-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.sector-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray);
}

.sector-item svg { width: 18px; height: 18px; color: var(--cyan); }

/* ── Footer ── */
.footer {
  background: var(--dark);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
  align-items: start;
}

.footer-brand { overflow: hidden; }
.footer-brand img { width: 100%; height: auto; max-height: 80px; margin-bottom: 8px; object-fit: contain; object-position: left top; display: block; mix-blend-mode: screen; }
.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
  max-width: 100%;
}

.footer-col h5 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.6);
  margin-bottom: 16px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.45);
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--cyan); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  transition: var(--transition);
}
.footer-bottom-links a:hover { color: var(--cyan); }

/* ── Page Hero (inner pages) ── */
.page-hero {
  background: var(--navy);
  padding: 72px 0 64px;
  text-align: center;
}

.page-hero h1 { color: var(--white); margin-bottom: 16px; }
.page-hero p  { color: rgba(255,255,255,0.6); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }

/* ── Solutions Page ── */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.solution-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.solution-card:hover { border-color: var(--cyan); transform: translateY(-3px); }

.solution-card-top {
  background: var(--navy);
  padding: 32px 28px;
}

.solution-card-top h3 { color: var(--white); margin-bottom: 8px; }
.solution-card-top p  { color: rgba(255,255,255,0.55); font-size: 0.88rem; }

.solution-card-body {
  padding: 24px 28px;
  background: var(--white);
}

.solution-tag {
  display: inline-block;
  background: rgba(32,226,215,0.1);
  color: var(--navy);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.solution-card-body ul { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.solution-card-body li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--dark);
}
.solution-card-body li svg { width: 15px; height: 15px; color: var(--cyan); flex-shrink: 0; }

/* ── Tech Page ── */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tech-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  background: var(--white);
}

.tech-card h3 { margin-bottom: 10px; font-size: 1rem; }
.tech-card p  { font-size: 0.88rem; color: var(--gray); }

.sla-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  margin-top: 12px;
  overflow: hidden;
}

.sla-fill {
  height: 100%;
  background: var(--cyan);
  border-radius: 3px;
  width: 99.99%;
}

.codec-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.codec-tag {
  background: var(--navy);
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-family: monospace;
}

/* ── Developer Page ── */
.dev-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.code-block {
  background: #0f1923;
  border-radius: var(--radius);
  padding: 24px;
  overflow-x: auto;
}

.code-block pre {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  color: #a8b2d8;
}

.code-block .kw  { color: var(--cyan); }
.code-block .str { color: #ffd79a; }
.code-block .num { color: #79c0ff; }
.code-block .cmt { color: #566a7f; }

/* ── Mobile ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { justify-content: center; }
  .dashboard-mockup { max-width: 420px; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid  { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .steps-grid    { grid-template-columns: 1fr; }
  .steps-grid::before { display: none; }
  .stats-grid    { grid-template-columns: repeat(2, 1fr); }
  .footer-grid   { grid-template-columns: 1fr 1fr; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid     { grid-template-columns: 1fr; }
  .dev-grid      { grid-template-columns: 1fr; }
  .problems-grid { grid-template-columns: 1fr; }

  .nav-links { display: none; }
  .nav-menu-btn { display: block; }
}

@media (max-width: 560px) {
  .features-grid  { grid-template-columns: 1fr; }
  .stats-grid     { grid-template-columns: repeat(2, 1fr); }
  .footer-grid    { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .cta-banner     { padding: 40px 24px; }
  .hero-cta       { flex-direction: column; }
}