/* ── Hero ── */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 100%);
}

.hero-glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

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

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: var(--color-primary-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero h1 {
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  max-width: 560px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ── Features Grid ── */

.features {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-card h3 {
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── Server Specs ── */

.specs {
  padding: 100px 0;
  background: var(--color-bg-surface);
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.spec-card {
  background: rgba(24, 24, 27, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.spec-card:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-glow-sm);
}

.spec-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
  margin-bottom: 4px;
  text-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
  min-width: 120px;
  display: inline-block;
}
.spec-value, .spec-detail {
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.spec-card.spec-swap .spec-value,
.spec-card.spec-swap .spec-detail {
  opacity: 0;
  transform: translateY(-6px);
}

.spec-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

.spec-detail {
  font-size: 0.85rem;
  color: var(--color-text);
  margin-top: 12px;
  font-family: var(--font-mono);
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
}

/* ── Terminal Block ── */

.terminal-section {
  padding: 80px 0;
}

.terminal-window {
  background: rgba(12, 12, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  max-width: 860px;
  margin: 0 auto;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 229, 255, 0.04);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--color-border);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
  flex: 1;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.terminal-live-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #28c840;
  border: 1px solid rgba(40, 200, 64, 0.3);
  border-radius: 100px;
  padding: 2px 10px;
  animation: live-pulse 2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.terminal-body {
  padding: 24px 28px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--color-text);
  height: 420px;
  overflow-y: auto;
  scroll-behavior: smooth;
}

.terminal-body::-webkit-scrollbar {
  width: 6px;
}

.terminal-body::-webkit-scrollbar-track {
  background: transparent;
}

.terminal-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}

.terminal-body .prompt {
  color: var(--color-primary);
  user-select: none;
}

.terminal-body .cmd {
  color: var(--color-text-heading);
}

.terminal-body .output {
  color: var(--color-text-muted);
  white-space: pre;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.terminal-body .cursor {
  color: var(--color-primary);
  animation: term-blink 0.7s step-end infinite;
}

@keyframes term-blink {
  50% { opacity: 0; }
}

/* ── Tech Stack ── */

.tech-stack {
  padding: 100px 0;
}

.stack-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.stack-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 28px 36px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-width: 130px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.stack-item:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-glow);
}

.stack-item svg {
  width: 36px;
  height: 36px;
  fill: var(--color-primary);
}

.stack-item span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ── About Block ── */

.about-block {
  padding: 80px 0;
  background: var(--color-bg-surface);
}

.about-content {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-text-muted);
}

/* ── Responsive ── */

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .specs-grid {
    grid-template-columns: 1fr;
  }

  .stack-grid {
    gap: 12px;
  }

  .stack-item {
    padding: 20px 24px;
    min-width: 100px;
  }

  .terminal-body {
    padding: 16px 14px;
    font-size: 0.7rem;
  }
}