/* ===== Base / Design tokens ===== */
:root {
  --background: #0f172a;
  --foreground: #e5e7eb;
  --surface: #111827;
  --surface-elevated: #1f2937;
  --card: #111827;
  --primary: #3b82f6;
  --primary-foreground: #f8fafc;
  --emerald: #10b981;
  --muted-foreground: #9ca3af;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 0.75rem;
  --Rbig: 26px;
  --Rsm: 4px;
  --gap: 14px;
}
 
* {
  border-color: var(--border);
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}

.font-mono {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

/* ===== Tailwind-compatible color/border/bg utilities ===== */
.bg-background {
  background-color: var(--background);
}

.bg-surface {
  background-color: var(--surface);
}

.bg-surface-elevated {
  background-color: var(--surface-elevated);
}

.bg-card {
  background-color: var(--card);
}

.bg-card\/40 {
  background-color: rgba(17, 24, 39, 0.4);
}

.bg-card\/50 {
  background-color: rgba(17, 24, 39, 0.5);
}

.bg-card\/60 {
  background-color: rgba(17, 24, 39, 0.6);
}

.bg-background\/70 {
  background-color: rgba(15, 23, 42, 0.7);
}

.bg-background\/80 {
  background-color: rgba(15, 23, 42, 0.8);
}

.bg-background\/95 {
  background-color: rgba(15, 23, 42, 0.95);
}

.bg-primary {
  background-color: var(--primary);
}

.bg-primary\/5 {
  background-color: rgba(59, 130, 246, 0.05);
}

.bg-primary\/10 {
  background-color: rgba(59, 130, 246, 0.10);
}

.bg-primary\/15 {
  background-color: rgba(59, 130, 246, 0.15);
}

.bg-primary\/20 {
  background-color: rgba(59, 130, 246, 0.20);
}

.text-foreground {
  color: var(--foreground);
}

.text-foreground\/80 {
  color: rgba(229, 231, 235, 0.80);
}

.text-foreground\/90 {
  color: rgba(229, 231, 235, 0.90);
}

.text-muted-foreground {
  color: var(--muted-foreground);
}

.text-primary {
  color: var(--primary);
}

.text-primary-foreground {
  color: var(--primary-foreground);
}

.text-emerald {
  color: var(--emerald);
}

.border-border {
  border-color: var(--border);
}

.border-primary\/20 {
  border-color: rgba(59, 130, 246, 0.20);
}

.border-primary\/40 {
  border-color: rgba(59, 130, 246, 0.40);
}

.border-primary\/50 {
  border-color: rgba(59, 130, 246, 0.50);
}

.border-emerald\/30 {
  border-color: rgba(16, 185, 129, 0.30);
}

.bg-emerald\/5 {
  background-color: rgba(16, 185, 129, 0.05);
}

.bg-emerald {
  background-color: var(--emerald);
}

.bg-emerald\/10 {
  background-color: rgba(16, 185, 129, 0.10);
}

.bg-emerald\/20 {
  background-color: rgba(16, 185, 129, 0.20);
}

.hover\:text-foreground:hover {
  color: var(--foreground);
}

.hover\:text-primary:hover {
  color: var(--primary);
}

.hover\:bg-primary\/10:hover {
  background-color: rgba(59, 130, 246, 0.10);
}

.hover\:bg-primary\/5:hover {
  background-color: rgba(59, 130, 246, 0.05);
}

.hover\:bg-primary\/20:hover {
  background-color: rgba(59, 130, 246, 0.20);
}

.hover\:bg-card:hover {
  background-color: var(--card);
}

.hover\:border-primary\/40:hover {
  border-color: rgba(59, 130, 246, 0.40);
}

.hover\:border-primary\/50:hover {
  border-color: rgba(59, 130, 246, 0.50);
}

.hover\:brightness-110:hover {
  filter: brightness(1.1);
}

/* ===== Shared effects ===== */
.bg-grid {
  background-image:
    linear-gradient(to right, rgba(229, 231, 235, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(229, 231, 235, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

.glow-primary {
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.30),
    0 10px 40px -10px rgba(59, 130, 246, 0.40);
}

.text-gradient {
  background: linear-gradient(135deg, var(--foreground) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== Reveal animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  animation: reveal 0.7s ease-out forwards;
}

@keyframes reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {

  .reveal-on-scroll,
  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }
  .skill-bar-fill {
    transition: none;
  }
}

.blink::after {
  content: "▍";
  color: var(--primary);
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}

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

/* ===== Section heading helper ===== */
.section-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.section-rule {
  margin-top: 1rem;
  height: 1px;
  width: 4rem;
  background: linear-gradient(to right, var(--primary), transparent);
}