/* ============================================
   RAVISUAL — style.css
   Art direction: technical / data analyst
   Palette: dark charcoal + electric teal accent
   Fonts: Cabinet Grotesk (display) + JetBrains Mono (code) + Inter (body)
   ============================================ */

/* ---- DESIGN TOKENS ---- */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 1000px;
  --content-wide: 1200px;

  --font-display: 'Cabinet Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;
}

/* ---- LIGHT MODE ---- */
:root, [data-theme="light"] {
  --color-bg:              #f4f6f9;
  --color-surface:         #ffffff;
  --color-surface-2:       #f9fafc;
  --color-surface-offset:  #edf0f5;
  --color-border:          #dde1e9;
  --color-divider:         #e8eaf0;

  --color-text:            #111827;
  --color-text-muted:      #6b7280;
  --color-text-faint:      #b0b7c3;

  --color-accent:          #00b4c4;
  --color-accent-hover:    #0097a7;
  --color-accent-active:   #007a87;
  --color-accent-dim:      #ccedf0;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
}

/* ---- DARK MODE ---- */
[data-theme="dark"],
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --color-bg:              #0d0f14;
  --color-surface:         #131720;
  --color-surface-2:       #171c27;
  --color-surface-offset:  #1a1f2d;
  --color-border:          #252b3b;
  --color-divider:         #1e2436;

  --color-text:            #e2e8f0;
  --color-text-muted:      #94a3b8;
  --color-text-faint:      #475569;

  --color-accent:          #22d3ee;
  --color-accent-hover:    #06b6d4;
  --color-accent-active:   #0891b2;
  --color-accent-dim:      #0f2e35;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
}}

[data-theme="dark"] {
  --color-bg:              #0d0f14;
  --color-surface:         #131720;
  --color-surface-2:       #171c27;
  --color-surface-offset:  #1a1f2d;
  --color-border:          #252b3b;
  --color-divider:         #1e2436;

  --color-text:            #e2e8f0;
  --color-text-muted:      #94a3b8;
  --color-text-faint:      #475569;

  --color-accent:          #22d3ee;
  --color-accent-hover:    #06b6d4;
  --color-accent-active:   #0891b2;
  --color-accent-dim:      #0f2e35;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.3s ease, color 0.3s ease;
}

img, svg { display: block; max-width: 100%; }
ul { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; }
p, li { text-wrap: pretty; }

a { color: inherit; text-decoration: none; }

::selection {
  background: color-mix(in srgb, var(--color-accent) 25%, transparent);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button { cursor: pointer; background: none; border: none; }

/* ---- LAYOUT ---- */
.container {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 clamp(var(--space-4), 4vw, var(--space-12));
}

.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-32));
}

/* ---- TYPOGRAPHY ---- */
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  line-height: 1.7;
}

.section-header {
  margin-bottom: clamp(var(--space-8), 5vw, var(--space-16));
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: all var(--transition-interactive);
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: #0d0f14;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px color-mix(in srgb, var(--color-accent) 35%, transparent);
}
.btn-primary:active { transform: none; background: var(--color-accent-active); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  background: var(--color-surface-offset);
}

.btn-full { width: 100%; justify-content: center; }

/* ---- HEADER ---- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s ease;
}
.header--scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 clamp(var(--space-4), 4vw, var(--space-12));
  height: 64px;
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.logo { flex-shrink: 0; }
.logo-svg { height: 28px; width: auto; color: var(--color-text); }

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-left: auto;
}

.nav-link {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.nav-link:hover { color: var(--color-text); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: var(--space-4);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}
.theme-toggle:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}
.nav-mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: all var(--transition-interactive);
}
.nav-mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-mobile-toggle.active span:nth-child(2) { opacity: 0; }
.nav-mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: var(--space-4) clamp(var(--space-4), 4vw, var(--space-12));
  border-top: 1px solid var(--color-divider);
  gap: var(--space-1);
}
.nav-mobile.open { display: flex; }
.nav-mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  transition: color var(--transition-interactive);
}
.nav-mobile-link:hover { color: var(--color-accent); }
.nav-mobile-link:last-child { border-bottom: none; }

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.3;
  mask-image: radial-gradient(ellipse 80% 60% at 60% 40%, black 20%, transparent 70%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
}
.hero-glow-1 {
  width: 500px;
  height: 500px;
  background: var(--color-accent);
  top: -10%;
  right: 5%;
}
.hero-glow-2 {
  width: 300px;
  height: 300px;
  background: var(--color-accent);
  bottom: 10%;
  left: 10%;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

.hero-content { max-width: 540px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-dim);
  border: 1px solid color-mix(in srgb, var(--color-accent) 30%, transparent);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.05;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero-accent {
  color: var(--color-accent);
  position: relative;
  display: inline-block;
}

.hero-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 50ch;
  margin-bottom: var(--space-8);
}

.hero-cta {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; gap: var(--space-1); }
.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* ---- CODE CARD ---- */
.hero-visual { display: flex; justify-content: center; }

.code-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 460px;
  transform: perspective(800px) rotateY(-4deg) rotateX(2deg);
  transition: transform 0.4s ease;
}
.code-card:hover { transform: perspective(800px) rotateY(0) rotateX(0); }

.code-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-red    { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green  { background: #28c840; }

.code-filename {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-left: var(--space-2);
}

.code-body {
  padding: var(--space-5) var(--space-6);
  overflow-x: auto;
}

.code-body code {
  font-family: var(--font-mono);
  font-size: clamp(0.72rem, 0.65rem + 0.35vw, 0.875rem);
  line-height: 1.75;
  display: block;
  white-space: pre;
}

/* Syntax highlighting */
.kw  { color: #c792ea; font-weight: 600; }
.str { color: #c3e88d; }
.cm  { color: var(--color-text-faint); font-style: italic; }
.num { color: #f78c6c; }

/* ---- ABOUT ---- */
.about { background: var(--color-surface); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.75;
  max-width: 65ch;
}
.about-text p strong { color: var(--color-text); font-weight: 600; }
.about-lead {
  font-size: var(--text-lg);
  color: var(--color-text) !important;
  font-weight: 400;
}

.about-personal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.personal-item {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
}

.about-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
}

.about-avatar {
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-4);
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--color-accent-dim);
}
.about-avatar svg { width: 100%; height: 100%; }
.about-avatar img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }

.about-card-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}
.about-card-info strong {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}
.about-card-info span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.about-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-accent-dim);
  color: var(--color-accent);
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid color-mix(in srgb, var(--color-accent) 25%, transparent);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-left: var(--space-4);
  border-left: 2px solid var(--color-border);
}
.timeline-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-4) - 5px);
  top: 6px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}
.timeline-year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
}
.timeline-role {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.timeline-place {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ---- SERVICES ---- */
.services { background: var(--color-bg); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.service-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-card--featured {
  border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
  background: linear-gradient(135deg, var(--color-surface), var(--color-accent-dim));
  grid-column: span 1;
}

.service-card--cta {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-dim);
  border-color: color-mix(in srgb, var(--color-accent) 30%, transparent);
  text-align: center;
}
.service-cta-inner { display: flex; flex-direction: column; gap: var(--space-4); align-items: center; }
.service-cta-inner h3 { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 800; }
.service-cta-inner p { font-size: var(--text-sm); color: var(--color-text-muted); max-width: 28ch; }

.service-icon {
  width: 44px;
  height: 44px;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.service-icon svg { width: 100%; height: 100%; }

.service-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  max-width: 100%;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.service-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
}
.service-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: var(--text-xs);
  top: 2px;
}

/* ---- MONETYZACJA ---- */
.monetize-section { background: var(--color-surface); }

.monetize-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  margin-bottom: clamp(var(--space-10), 6vw, var(--space-16));
}

.monetize-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}
.monetize-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
  transform: translateY(-2px);
}

.monetize-icon {
  width: 44px;
  height: 44px;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.monetize-icon svg { width: 100%; height: 100%; }

.monetize-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.monetize-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.monetize-quote {
  background: var(--color-accent-dim);
  border: 1px solid color-mix(in srgb, var(--color-accent) 25%, transparent);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
}

.monetize-quote blockquote {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.75;
  font-style: italic;
  margin-bottom: var(--space-4);
  max-width: 72ch;
}

.monetize-quote cite {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: normal;
  font-family: var(--font-mono);
}

.cite-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition-interactive);
}
.cite-link:hover { opacity: 0.8; }

@media (max-width: 768px) {
  .monetize-grid { grid-template-columns: 1fr; }
}

/* ---- SKILLS ---- */
.skills-section { background: var(--color-bg); }

.skills-layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: clamp(var(--space-6), 4vw, var(--space-10));
  align-items: start;
}

.skills-group-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-5);
}

.skills-list { display: flex; flex-direction: column; gap: var(--space-4); }

.skill-item { display: flex; flex-direction: column; gap: var(--space-2); }
.skill-name { font-size: var(--text-sm); font-weight: 500; color: var(--color-text); }

.skill-bar {
  height: 6px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  width: var(--fill, 50%);
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  border-radius: var(--radius-full);
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: width;
}
.skill-item--expert .skill-fill { background: linear-gradient(90deg, var(--color-accent), #a78bfa); }

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.skill-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-interactive), color var(--transition-interactive);
}
.skill-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---- CONTACT ---- */
.contact { background: var(--color-bg); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-2);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: border-color var(--transition-interactive);
}
a.contact-item:hover { border-color: var(--color-accent); }

.contact-item-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-dim);
  border-radius: var(--radius-md);
  flex-shrink: 0;
  color: var(--color-accent);
}
.contact-item-icon svg { width: 18px; height: 18px; }

.contact-item div:last-child {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.contact-label { font-size: var(--text-xs); color: var(--color-text-faint); font-family: var(--font-mono); }
.contact-value { font-size: var(--text-sm); font-weight: 600; }

.contact-availability {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: #4ade80;
  font-family: var(--font-mono);
  margin-top: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: color-mix(in srgb, #4ade80 8%, transparent);
  border: 1px solid color-mix(in srgb, #4ade80 25%, transparent);
  border-radius: var(--radius-lg);
}
.avail-dot {
  width: 8px;
  height: 8px;
  background: #4ade80;
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s ease-in-out infinite;
}

/* ---- FORM ---- */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
  width: 100%;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--color-text-faint); }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 15%, transparent);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: var(--space-10); }

.form-note { font-size: var(--text-xs); color: var(--color-text-faint); }
.form-note a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }

/* ---- FOOTER ---- */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.footer-brand { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-logo .logo-svg { height: 24px; }
.footer-tagline { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-muted); }

.footer-nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.footer-nav a:hover { color: var(--color-accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-bottom > span {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}

.pplx-credit {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  transition: color var(--transition-interactive);
}
.pplx-credit:hover { color: var(--color-accent); }

/* ---- SCROLL REVEAL ---- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .about-aside { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }
  .skills-layout { grid-template-columns: 1fr 1fr; }
  .skills-layout .skills-group:last-child { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .nav-mobile-toggle { display: flex; }
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero { min-height: auto; padding-block: var(--space-16); }
  .hero-stats { gap: var(--space-4); }
  .stat-divider { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .skills-layout { grid-template-columns: 1fr; }
  .about-aside { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}