/* ═══════════════════════════════════════════════════════
   GDATA GROUP — operating_system.css
   Scope: Server-management page (hero, service tabs, price
   card, two-column service blocks). Same palette as the
   rest of the site: --accent #0D59F2 / #3D7FFF, cyan
   #48D6FF / #00C8D4, on the --bg-main #00193C background.
   ═══════════════════════════════════════════════════════ */

:root {
  --os-text: #FFFFFF;
  --os-muted: #94A3B8;
  --os-line: rgba(255, 255, 255, 0.08);
  --os-card: rgba(255, 255, 255, 0.03);
}

/* ─────────────────────────────────────────────────────
   0. SHARED LAYOUT
   ───────────────────────────────────────────────────── */
.os-container {
  margin: 0 auto;
  padding: 0 102px;
}

@media (max-width: 991px) {
  .os-container { padding: 0 24px; }
}

/* ─────────────────────────────────────────────────────
   1. HERO
   ───────────────────────────────────────────────────── */
.os-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 64px;
  background:
    radial-gradient(ellipse 70% 80% at 85% 40%, rgba(13, 89, 242, 0.28) 0%, transparent 60%),
    radial-gradient(ellipse 60% 60% at 0% 90%, rgba(0, 200, 212, 0.10) 0%, transparent 60%);
}

.os-hero-glow {
  position: absolute;
  top: -120px;
  right: -80px;
  width: 560px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(72, 214, 255, 0.16) 0%, transparent 65%);
  filter: blur(12px);
  pointer-events: none;
}

.os-hero .os-container { position: relative; z-index: 1; }

.os-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.os-eyebrow-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(13, 89, 242, 0.16);
  border: 1px solid rgba(72, 214, 255, 0.35);
  color: #48D6FF;
  font-family: "Space Grotesk", "Exo 2", sans-serif;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 22px;
}

.os-eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #48D6FF;
  box-shadow: 0 0 10px rgba(72, 214, 255, 0.7);
  animation: os-dot-pulse 1.8s ease-in-out infinite;
}

@keyframes os-dot-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.25); opacity: 0.7; }
}

.os-hero-title {
  font-family: "Space Grotesk", "Exo 2", sans-serif;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--os-text);
  margin: 0 0 18px;
}

.os-hero-desc {
  max-width: 560px;
  color: var(--os-muted);
  font-size: 15.5px;
  line-height: 1.75;
  margin: 0;
}

.os-hero-right { display: flex; justify-content: center; }

.os-hero-img {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 50px rgba(0, 0, 0, 0.5));
}

/* ─────────────────────────────────────────────────────
   2. TABS
   ───────────────────────────────────────────────────── */
.os-plans { padding: 56px 0 96px; }

.os-tabs {
  position: relative;
  display: flex;
  gap: 0;
  max-width: 620px;
  margin: 0 auto 40px;
}

.os-tab {
  flex: 1;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0 12px 22px;
  font-family: "Space Grotesk", "Exo 2", sans-serif;
  font-size: clamp(16px, 2vw, 21px);
  font-weight: 700;
  color: var(--os-muted);
  white-space: nowrap;
  transition: color var(--dur, .3s) var(--ease, ease);
}

.os-tab:hover { color: #CBD5E1; }
.os-tab.is-active { color: var(--os-text); }

.os-tabs-track {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.os-tabs-thumb {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 50%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent, #0D59F2), #48D6FF);
  transition: transform var(--dur, .3s) var(--ease, ease),
              width var(--dur, .3s) var(--ease, ease);
}

/* ─────────────────────────────────────────────────────
   2b. PRICE CARD
   ───────────────────────────────────────────────────── */
.os-panel[hidden] { display: none; }

.os-price-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: 16px 16px 0 0;
  background: linear-gradient(120deg, var(--accent, #0D59F2) 0%, #1f7fe6 55%, #2aa8e6 100%);
  box-shadow: 0 14px 40px rgba(13, 89, 242, 0.35);
}

.os-price-text {
  font-size: clamp(18px, 2.2vw, 24px);
  color: #EAF2FF;
  margin-bottom: 20px;
}

.os-price-text strong {
  font-family: "Space Grotesk", "Exo 2", sans-serif;
  font-weight: 800;
  color: #fff;
}

.os-price-cta {
  display: inline-block;
  padding: 12px 40px;
  border-radius: 16px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--accent, #0D59F2);
  background: #fff;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.2);
  transition: transform var(--dur, .3s) var(--ease, ease),
              box-shadow var(--dur, .3s) var(--ease, ease);
}

.os-price-cta:hover {
  color: var(--accent, #0D59F2);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

/* ─────────────────────────────────────────────────────
   2c. SERVICE BLOCKS GRID
   ───────────────────────────────────────────────────── */
.os-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  border: 1px solid var(--os-line);
  border-top: 0;
  border-radius: 0 0 16px 16px;
  overflow: hidden;
  background: var(--os-line);
}

.os-block {
  display: flex;
  flex-direction: column;
  background: var(--os-card);
}

.os-block-title {
  margin: 0;
  padding: 16px 22px;
  text-align: center;
  font-family: "Space Grotesk", "Exo 2", sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  background: rgba(13, 89, 242, 0.16);
}

.os-block-list {
  flex: 1;
  margin: 0;
  padding: 22px 26px;
  list-style: none;
}

.os-block-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  color: #C7D2E0;
  font-size: 14px;
  line-height: 1.65;
}

.os-block-list li:last-child { margin-bottom: 0; }

.os-block-list li::before {
  content: "•";
  position: absolute;
  left: 4px;
  top: -1px;
  color: #48D6FF;
  font-weight: 700;
}

/* ─────────────────────────────────────────────────────
   3. RESPONSIVE
   ───────────────────────────────────────────────────── */
@media (max-width: 991px) {
  .os-hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .os-hero-right { order: -1; }
}

@media (max-width: 767px) {
  .os-grid { grid-template-columns: 1fr; }
}