/* ============================================================
   Cloudnine Telecommunications – Main Stylesheet
   ============================================================ */

/* ---- Variables ---- */
:root {
  --clr-primary:    #0057b8;   /* deep sky blue */
  --clr-primary-dk: #003f8a;
  --clr-accent:     #00b4d8;
  --clr-dark:       #1a1a2e;
  --clr-text:       #2d2d3a;
  --clr-muted:      #6b7280;
  --clr-bg:         #f8fafc;
  --clr-bg-alt:     #eef3fb;
  --clr-border:     #dde3ee;
  --clr-white:      #ffffff;
  --clr-success:    #16a34a;
  --clr-popular:    #f59e0b;
  --radius:         10px;
  --shadow-sm:      0 1px 4px rgba(0,0,0,.07);
  --shadow-md:      0 4px 18px rgba(0,0,0,.10);
  --shadow-lg:      0 8px 32px rgba(0,0,0,.14);
  --transition:     .22s ease;
  --font-sans:      'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-white);
  line-height: 1.7;
}

a { color: var(--clr-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

ul { list-style: none; }

/* ---- Layout helpers ---- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--clr-bg-alt);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--clr-dark);
  margin-bottom: .75rem;
}

.section-header p {
  color: var(--clr-muted);
  font-size: 1.05rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-white);
}
.btn-primary:hover {
  background: var(--clr-primary-dk);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  border-color: var(--clr-white);
  color: var(--clr-white);
  background: transparent;
}
.btn-outline:hover {
  background: var(--clr-white);
  color: var(--clr-primary);
  text-decoration: none;
}

.btn-plan {
  display: block;
  text-align: center;
  background: var(--clr-bg-alt);
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary);
  margin-top: auto;
}
.btn-plan:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-full { width: 100%; text-align: center; }

/* ---- Navigation ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--clr-white);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: 1200px;
  margin: auto;
}

.nav-brand .logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -.5px;
}

.nav-brand .logo {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--clr-text);
  font-weight: 500;
  font-size: .95rem;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--clr-primary); text-decoration: none; }

.btn-nav {
  background: var(--clr-primary);
  color: var(--clr-white) !important;
  padding: .55rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
}
.btn-nav:hover { background: var(--clr-primary-dk) !important; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--clr-text);
  padding: .25rem;
}

/* ---- Hero ---- */
.hero {
  /*
   * PLACEHOLDER: set the hero background image below once you have it.
   * e.g. background-image: linear-gradient(135deg, rgba(0,57,128,.82) 0%, rgba(0,180,216,.65) 100%), url('../img/hero-bg.jpg');
   */
  /* background-image: linear-gradient(135deg, #003980 0%, #0057b8 50%, #00b4d8 100%); */
  background-image: linear-gradient(135deg, rgba(0,57,128,.82) 0%, rgba(0,180,216,.65) 100%), url('../img/hero-bg.png');
  background-size: cover;
  background-position: center;
  color: var(--clr-white);
  padding: 7rem 1.5rem;
  text-align: center;
}

.hero-content {
  max-width: 780px;
  margin: auto;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 999px;
  padding: .35rem 1.1rem;
  font-size: .85rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  opacity: .9;
  margin-bottom: 2.25rem;
  max-width: 620px;
  margin-inline: auto;
  margin-bottom: 2.25rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Trust Strip ---- */
.trust-strip {
  background: var(--clr-dark);
  padding: 1.1rem 0;
}

.trust-items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem 2.5rem;
}

.trust-item {
  color: #c8d8f0;
  font-size: .9rem;
  font-weight: 500;
}

/* ---- Services ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.service-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.service-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.1rem;
  color: var(--clr-dark);
  margin-bottom: .6rem;
}

.service-card p {
  color: var(--clr-muted);
  font-size: .93rem;
  margin-bottom: 1rem;
}

.service-features {
  padding-left: 0;
}
.service-features li {
  font-size: .88rem;
  color: var(--clr-text);
  padding: .2rem 0 .2rem 1.3rem;
  position: relative;
}
.service-features li::before {
  content: '✓';
  color: var(--clr-success);
  position: absolute;
  left: 0;
  font-weight: 700;
}

/* ---- Plan Tabs ---- */
.plan-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.plan-tab, .rate-tab {
  padding: .65rem 1.5rem;
  border: 2px solid var(--clr-primary);
  border-radius: 999px;
  background: transparent;
  color: var(--clr-primary);
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.plan-tab.active, .rate-tab.active,
.plan-tab:hover, .rate-tab:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
}

.plan-panel, .rate-panel { display: none; }
.plan-panel.active, .rate-panel.active { display: block; }

.plan-note {
  text-align: center;
  color: var(--clr-muted);
  font-size: .9rem;
  margin-bottom: 1.75rem;
}

/* ---- Plans Grid ---- */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.plans-grid-enterprise {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.plans-grid-single {
  max-width: 300px;
  margin: auto;
}

.plan-card {
  background: var(--clr-white);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .9rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}
.plan-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.plan-card.popular {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(0,87,184,.12), var(--shadow-md);
}

.popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--clr-popular);
  color: var(--clr-white);
  font-size: .75rem;
  font-weight: 700;
  padding: .2rem .85rem;
  border-radius: 999px;
  white-space: nowrap;
}

.plan-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-dark);
}

.plan-price {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1;
}
.plan-price span {
  font-size: 1.4rem;
}
.plan-price small {
  font-size: .85rem;
  color: var(--clr-muted);
  font-weight: 400;
}

.plan-features li {
  font-size: .88rem;
  padding: .2rem 0 .2rem 1.3rem;
  position: relative;
  color: var(--clr-text);
}
.plan-features li::before {
  content: '✓';
  color: var(--clr-success);
  position: absolute;
  left: 0;
  font-weight: 700;
}

.plan-rates {
  margin: .85rem 0 1rem;
  padding: .55rem .75rem;
  background: var(--clr-bg-alt);
  border-left: 3px solid var(--accent);
  border-radius: 0 calc(var(--radius) / 2) calc(var(--radius) / 2) 0;
}
.plan-rates-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--accent);
  margin-bottom: .3rem;
}
.plan-rates-items {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem .75rem;
}
.plan-rates-items span {
  font-size: .78rem;
  color: var(--clr-muted);
  white-space: nowrap;
}
.plan-rates-items span::before {
  content: '·';
  margin-right: .3rem;
  color: var(--accent);
}

.plan-card-cta {
  background: var(--clr-bg-alt);
  border-style: dashed;
  justify-content: center;
  text-align: center;
  gap: 1.25rem;
}
.plan-card-cta p {
  color: var(--clr-muted);
  font-size: .9rem;
}

.plan-footer-note {
  text-align: center;
  color: var(--clr-muted);
  font-size: .85rem;
  margin-top: 2.5rem;
}

/* ---- Rates Tables ---- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
}

.rates-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--clr-white);
  font-size: .9rem;
}

.rates-table thead {
  background: var(--clr-primary);
  color: var(--clr-white);
}

.rates-table th {
  padding: .85rem 1rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.rates-table td {
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--clr-border);
  color: var(--clr-text);
}

.rates-table tbody tr:last-child td {
  border-bottom: none;
}

.rates-table tbody tr:hover {
  background: #f0f6ff;
}

/* ---- International Rates ---- */
.intl-search-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.intl-search {
  width: 100%;
  max-width: 480px;
  padding: .75rem 1.25rem;
  border: 2px solid var(--clr-border);
  border-radius: 999px;
  font-size: 1rem;
  color: var(--clr-text);
  transition: border-color var(--transition);
  outline: none;
}
.intl-search:focus {
  border-color: var(--clr-primary);
}

.intl-table-wrap {
  max-height: 500px;
  overflow-y: auto;
}

.no-result {
  text-align: center;
  padding: 2rem;
  color: var(--clr-muted);
}

.hidden { display: none; }

/* ---- Why Choose Us ---- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem;
}

.why-card {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--clr-white);
  border-radius: var(--radius);
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.why-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.why-card:hover .why-icon {
  transform: scale(1.2);
  transition: transform var(--transition);
}
.why-icon {
  display: inline-block;
  font-size: 2.4rem;
  margin-bottom: .85rem;
  transition: transform var(--transition);
}

.why-card h4 {
  font-size: 1rem;
  color: var(--clr-dark);
  margin-bottom: .5rem;
}

.why-card p {
  font-size: .88rem;
  color: var(--clr-muted);
}

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: 3.5rem;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.form-group label {
  font-size: .88rem;
  font-weight: 600;
  color: var(--clr-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: .7rem .95rem;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius);
  font-size: .95rem;
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-white);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--clr-primary);
}

.form-group textarea { resize: vertical; }

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  padding: 2.5rem 2rem;
  background: var(--clr-bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--clr-border);
}

.contact-detail {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-detail strong {
  display: block;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--clr-muted);
  margin-bottom: .2rem;
}

.contact-detail p,
.contact-detail a {
  color: var(--clr-text);
  font-weight: 500;
}
.contact-detail a:hover { color: var(--clr-primary); }

/* ---- Footer ---- */
.site-footer {
  background: var(--clr-dark);
  color: #c0cce0;
  padding-top: 4rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer-brand .logo-text {
  color: var(--clr-white);
  font-size: 1.25rem;
  font-weight: 800;
  display: block;
  margin-bottom: .75rem;
}

.footer-brand img {
  max-width: 260px;
  width: 100%;
  height: auto;
  margin-bottom: .75rem;
}

.footer-brand p {
  font-size: .88rem;
  color: #8fa5c0;
}

.footer-links h4 {
  color: var(--clr-white);
  font-size: .9rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: 1rem;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.footer-links a {
  color: #8fa5c0;
  font-size: .88rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--clr-accent); text-decoration: none; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.25rem 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: .82rem;
  color: #6a7e96;
}

/* ---- Back to top ---- */
.back-to-top {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  background: var(--clr-primary);
  color: var(--clr-white);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: var(--shadow-md);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--clr-primary-dk);
  transform: translateY(-2px);
  text-decoration: none;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--clr-white);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    box-shadow: var(--shadow-md);
    border-top: 1px solid var(--clr-border);
  }
  .nav-links.open { display: flex; }

  .site-header { position: relative; }

  .hero { padding: 5rem 1.25rem; }

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

  .footer-inner { grid-template-columns: 1fr; }

  .plans-grid, .plans-grid-enterprise {
    grid-template-columns: 1fr;
  }

  .plan-tabs, .plan-tabs { gap: .4rem; }
  .plan-tab, .rate-tab { font-size: .8rem; padding: .5rem 1rem; }
}

@media (max-width: 480px) {
  .section { padding: 3.5rem 0; }
  .section-header { margin-bottom: 2rem; }
  .hero h1 { font-size: 1.9rem; }
}