/* ============================================================
   Damian A. — IT ePortfolio
   Darktrace-inspired design system: near-black surfaces,
   grotesk type, square markers, pill CTAs, gradient glows.
   ============================================================ */

:root {
  /* Surfaces */
  --bg: #0a0a0e;
  --bg-deep: #060609;
  --surface: #111117;
  --surface-2: #16161e;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  /* Text */
  --text: #f4f4f6;
  --text-muted: #a3a3ad;
  --text-faint: #6b6b75;

  /* Accents — Darktrace-style orange with pink/purple gradient support */
  --accent: #ff7a1a;
  --accent-soft: rgba(255, 122, 26, 0.14);
  --pink: #ff3d8a;
  --purple: #7b2ff7;
  --violet: #4b0fd4;
  --grad: linear-gradient(115deg, #ff7a1a 0%, #ff3d8a 48%, #7b2ff7 100%);

  /* Status */
  --info: #6aa5ff;
  --warn: #ff6b6b;
  --success: #4ade80;

  /* Type scale */
  --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, 4.5rem);

  /* Spacing */
  --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;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  --font-display: 'General Sans', 'Inter', system-ui, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --maxw: 1180px;
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Base ---------- */
*, *::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: 90px;
}

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

img, svg, video { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.12; text-wrap: balance; font-weight: 600; letter-spacing: -0.015em; }
p, li { text-wrap: pretty; max-width: 72ch; }
a { color: inherit; }

::selection { background: rgba(255, 122, 26, 0.35); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: var(--radius-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--space-6); }

/* ---------- Gradient top strip ---------- */
.grad-strip { height: 3px; background: var(--grad); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(8, 8, 12, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-6); padding-block: var(--space-4);
}
.brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.brand-mark { width: 34px; height: 34px; flex: 0 0 34px; }
.brand-name {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.05rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text);
}
.brand-sub { font-size: var(--text-xs); color: var(--text-faint); letter-spacing: 0.04em; }

.nav-links { display: flex; align-items: center; gap: var(--space-6); }
.nav-links a {
  position: relative; display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--text-muted);
  font-size: var(--text-sm); font-weight: 500;
  transition: color var(--transition);
}
.nav-links a::before {
  content: ''; width: 6px; height: 6px; background: var(--text-faint);
  transition: background var(--transition), box-shadow var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::before { background: var(--accent); box-shadow: 0 0 8px var(--accent); }

/* Pill buttons — Darktrace style */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 24px; border-radius: var(--radius-full);
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm);
  text-decoration: none; white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.btn .arrow { transition: transform var(--transition); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary { background: #fff; color: #0c0c10; }
.btn-primary .arrow { color: var(--accent); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 32px rgba(255, 122, 26, 0.25); }
.btn-ghost { border: 1px solid var(--border-strong); color: var(--text); background: rgba(255, 255, 255, 0.02); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.35); background: rgba(255, 255, 255, 0.05); }

/* ---------- Eyebrow label with square marker ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted);
}
.eyebrow::before { content: ''; width: 8px; height: 8px; background: var(--accent); box-shadow: 0 0 10px rgba(255, 122, 26, 0.8); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(var(--space-16), 10vw, var(--space-24)) 0 clamp(var(--space-12), 7vw, var(--space-20));
}
.hero-glow {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
}
.hero-glow::before {
  content: ''; position: absolute;
  width: 900px; height: 900px; right: -260px; top: -380px;
  background: radial-gradient(circle at center,
    rgba(255, 122, 26, 0.28) 0%,
    rgba(255, 61, 138, 0.18) 34%,
    rgba(123, 47, 247, 0.14) 58%,
    transparent 72%);
  filter: blur(40px);
  animation: drift 14s ease-in-out infinite alternate;
}
.hero-glow::after {
  content: ''; position: absolute;
  width: 640px; height: 640px; left: -280px; bottom: -320px;
  background: radial-gradient(circle at center,
    rgba(123, 47, 247, 0.2) 0%,
    rgba(255, 61, 138, 0.1) 45%,
    transparent 70%);
  filter: blur(40px);
  animation: drift 18s ease-in-out infinite alternate-reverse;
}
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-60px, 40px, 0) scale(1.08); }
}
.hero-grid-overlay {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 60% 20%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 60% 20%, black 20%, transparent 75%);
}
.hero-inner { position: relative; z-index: 1; }
.hero h1 {
  font-size: var(--text-3xl); font-weight: 600; color: #fff;
  max-width: 17ch; margin: var(--space-5) 0 var(--space-6);
}
.hero h1 .grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { color: var(--text-muted); font-size: var(--text-base); max-width: 58ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-8); }

/* ---------- Stats band ---------- */
.stats-band { border-block: 1px solid var(--border); background: var(--bg-deep); }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: var(--space-10) 0; gap: var(--space-8);
}
.stat .num {
  font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 600;
  color: #fff; line-height: 1;
}
.stat .num em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .label {
  display: inline-flex; align-items: center; gap: 8px; margin-top: var(--space-3);
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-muted);
}
.stat .label::before { content: ''; width: 6px; height: 6px; background: var(--accent); flex: 0 0 6px; }

/* ---------- Sections ---------- */
section { padding: clamp(var(--space-16), 8vw, var(--space-24)) 0; }
.section-head { margin-bottom: var(--space-12); }
.section-head h2 { font-size: var(--text-2xl); color: #fff; margin-top: var(--space-4); max-width: 24ch; }
.section-head .sub { color: var(--text-muted); margin-top: var(--space-4); max-width: 60ch; }

/* ---------- Capability cards ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.cap-card {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-8);
  transition: border-color var(--transition), transform var(--transition);
}
.cap-card::before {
  content: ''; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: var(--grad); opacity: 0; transition: opacity var(--transition);
}
.cap-card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.cap-card:hover::before { opacity: 1; }
.cap-icon {
  width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: var(--radius-md); margin-bottom: var(--space-5);
  background: var(--accent-soft); color: var(--accent);
}
.cap-card h3 { font-size: var(--text-lg); color: #fff; margin-bottom: var(--space-3); }
.cap-card p { color: var(--text-muted); font-size: var(--text-sm); }
.cap-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-5); }
.tag {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.02em;
  padding: 4px 10px; border-radius: var(--radius-full);
  border: 1px solid var(--border); color: var(--text-muted);
  background: rgba(255, 255, 255, 0.02);
}

/* ---------- Project cards ---------- */
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
.project-card {
  position: relative; display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); text-decoration: none;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  border-color: rgba(255, 122, 26, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 40px rgba(255, 122, 26, 0.08);
}
.project-media { position: relative; aspect-ratio: 16 / 8.5; overflow: hidden; }
.project-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}
.project-card:hover .project-media img { transform: scale(1.05); }
.project-media::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 10, 14, 0.05) 40%, rgba(10, 10, 14, 0.92) 100%);
}
.project-body { padding: var(--space-6) var(--space-6) var(--space-8); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
.project-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent);
}
.project-kicker::before { content: ''; width: 6px; height: 6px; background: var(--accent); }
.project-body h3 { font-size: var(--text-lg); color: #fff; }
.project-body p { color: var(--text-muted); font-size: var(--text-sm); flex: 1; }
.project-link {
  display: inline-flex; align-items: center; gap: 8px; margin-top: var(--space-2);
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); color: #fff;
}
.project-link .arrow { color: var(--accent); transition: transform var(--transition); }
.project-card:hover .project-link .arrow { transform: translateX(4px); }

/* ---------- Contact ---------- */
.contact-panel {
  position: relative; overflow: hidden;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--surface);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  text-align: center;
}
.contact-panel::before {
  content: ''; position: absolute; inset: -40%; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 50% 45% at 50% 115%,
    rgba(255, 122, 26, 0.22) 0%, rgba(255, 61, 138, 0.12) 40%, transparent 70%);
}
.contact-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: var(--space-5); }
.contact-inner h2 { font-size: var(--text-2xl); color: #fff; max-width: 20ch; }
.contact-inner p { color: var(--text-muted); max-width: 52ch; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-deep); padding: var(--space-10) 0; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); flex-wrap: wrap; }
.site-footer p { color: var(--text-faint); font-size: var(--text-xs); }
.footer-links { display: flex; gap: var(--space-6); }
.footer-links a { color: var(--text-muted); font-size: var(--text-xs); text-decoration: none; transition: color var(--transition); }
.footer-links a:hover { color: var(--text); }

/* ============================================================
   Interior / project pages
   ============================================================ */
.page-hero { position: relative; overflow: hidden; padding: clamp(var(--space-12), 7vw, var(--space-20)) 0 var(--space-12); }
.page-hero h1 { font-size: var(--text-2xl); color: #fff; margin: var(--space-4) 0; max-width: 24ch; }
.page-hero .lead { color: var(--text-muted); max-width: 60ch; }
.breadcrumb {
  display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-faint);
  margin-bottom: var(--space-6);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-faint); }

.meta-row { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-6); }
.meta-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: var(--radius-full);
  border: 1px solid var(--border-strong); background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted);
}
.meta-chip strong { color: var(--text); font-weight: 600; }
.meta-chip::before { content: ''; width: 6px; height: 6px; background: var(--accent); flex: 0 0 6px; }

.article { padding-bottom: clamp(var(--space-16), 8vw, var(--space-24)); }
.article-body { max-width: 860px; }
.article-hero-img {
  width: 100%; max-height: 420px; object-fit: cover;
  border-radius: var(--radius-lg); border: 1px solid var(--border);
  margin-bottom: var(--space-10);
}
.article-body h2 {
  display: flex; align-items: center; gap: 12px;
  font-size: var(--text-xl); color: #fff;
  margin: var(--space-12) 0 var(--space-5);
}
.article-body h2::before { content: ''; width: 10px; height: 10px; background: var(--grad); flex: 0 0 10px; }
.article-body h2:first-of-type { margin-top: 0; }
.article-body h3 { font-size: var(--text-lg); color: #fff; margin: var(--space-8) 0 var(--space-3); }
.article-body h4 { font-size: var(--text-base); color: var(--accent); margin: var(--space-5) 0 var(--space-2); }
.article-body p { color: var(--text-muted); margin-bottom: var(--space-4); }
.article-body ul { padding-left: var(--space-5); margin-bottom: var(--space-5); }
.article-body li { color: var(--text-muted); margin-bottom: var(--space-2); }
.article-body li::marker { color: var(--accent); }
.article-body strong { color: var(--text); }

/* Steps */
.step {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-8); margin: var(--space-6) 0;
  transition: border-color var(--transition);
}
.step:hover { border-color: var(--border-strong); }
.step-number {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent);
  padding: 6px 14px; border-radius: var(--radius-full);
  border: 1px solid rgba(255, 122, 26, 0.35); background: var(--accent-soft);
  margin-bottom: var(--space-4);
}
.step h3 { margin-top: 0; }

/* Callouts */
.callout { border-radius: var(--radius-md); padding: var(--space-5); margin: var(--space-5) 0; font-size: var(--text-sm); color: var(--text-muted); border: 1px solid; }
.callout strong { color: var(--text); }
.callout.info { background: rgba(106, 165, 255, 0.07); border-color: rgba(106, 165, 255, 0.25); }
.callout.info strong { color: var(--info); }
.callout.warning { background: rgba(255, 107, 107, 0.07); border-color: rgba(255, 107, 107, 0.25); }
.callout.warning strong { color: var(--warn); }
.callout.success { background: rgba(74, 222, 128, 0.06); border-color: rgba(74, 222, 128, 0.22); }
.callout.success strong { color: var(--success); }

/* Code blocks */
.code {
  background: #050508; border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: var(--space-5);
  font-family: var(--font-mono); font-size: 0.8rem; line-height: 1.7;
  color: #ffb46b; overflow-x: auto; margin: var(--space-4) 0;
  white-space: pre-wrap; word-break: break-word;
}

/* Diagram blocks */
.diagram {
  background: var(--bg-deep); border: 1px solid var(--border-strong);
  border-radius: var(--radius-md); padding: var(--space-6);
  font-family: var(--font-mono); font-size: 0.78rem; line-height: 1.9;
  color: var(--text-muted); text-align: center; margin: var(--space-5) 0;
  overflow-x: auto;
}

.two-column { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); margin: var(--space-5) 0; }

.config-section {
  background: rgba(255, 255, 255, 0.02); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: var(--space-6); margin: var(--space-5) 0;
}

.side-project {
  border: 1px solid rgba(74, 222, 128, 0.25); border-radius: var(--radius-lg);
  padding: var(--space-8); margin: var(--space-10) 0;
  background: rgba(74, 222, 128, 0.03);
}
.side-project > h2 { color: var(--success); }

/* Pi logo chip on project 4 */
.page-logo {
  width: 72px; height: 72px; border-radius: var(--radius-md);
  border: 1px solid var(--border-strong); background: #fff;
  display: grid; place-items: center; overflow: hidden; margin-bottom: var(--space-5);
}
.page-logo img { max-width: 56px; max-height: 56px; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1), transform 700ms cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .cap-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-8) var(--space-6); }
  .two-column { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-links { gap: var(--space-4); }
  .nav-links a { font-size: 0.8rem; }
  .nav-links a::before { display: none; }
  .nav .btn { display: none; }
  .brand-sub { display: none; }
  .hero h1 { font-size: var(--text-2xl); }
}
@media (max-width: 520px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .nav { gap: var(--space-3); }
  .nav-links { gap: 10px; }
  .nav-links a { font-size: 0.76rem; }
  .brand { gap: 8px; }
  .brand-mark { width: 28px; height: 28px; flex: 0 0 28px; }
  .brand-name { font-size: 0.92rem; letter-spacing: 0.05em; }
}