/* ==========================================================================
   Zach Mariskanish — Cybersecurity Portfolio
   Nothing-inspired design system: monochrome, typographic, instrument-panel.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Doto:wght@400..900&family=Space+Grotesk:wght@300;400;500;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  /* Dark mode (default) */
  --black: #000000;
  --surface: #111111;
  --surface-raised: #1A1A1A;
  --border: #222222;
  --border-visible: #333333;
  --text-disabled: #666666;
  --text-secondary: #999999;
  --text-primary: #E8E8E8;
  --text-display: #FFFFFF;

  --accent: #D71921;
  --accent-subtle: rgba(215, 25, 33, 0.15);
  --success: #4A9E5C;
  --warning: #D4A843;
  --interactive: #5B9BF6;

  --space-2xs: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

:root[data-theme="light"] {
  --black: #F5F5F5;
  --surface: #FFFFFF;
  --surface-raised: #F0F0F0;
  --border: #E8E8E8;
  --border-visible: #CCCCCC;
  --text-disabled: #999999;
  --text-secondary: #666666;
  --text-primary: #1A1A1A;
  --text-display: #000000;
  --interactive: #0058CC;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--text-primary);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}

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

ul { margin: 0; padding: 0; list-style: none; }

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ---------- Type scale ---------- */
.display-xl {
  font-family: 'Doto', 'Space Mono', monospace;
  font-weight: 800;
  font-size: clamp(48px, 9vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text-display);
}

.display-md {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-display);
}

.heading {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-display);
}

.subheading {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 400;
  font-size: 18px;
  line-height: 1.3;
  color: var(--text-primary);
}

.body-text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  font-weight: 300;
}

.body-sm {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.label {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  line-height: 1.2;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.caption {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.mono {
  font-family: 'Space Mono', monospace;
}

/* ---------- Header / nav ---------- */
.site-header {
  padding: var(--space-2xl) 0 var(--space-xl);
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
}

.brand {
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.brand strong {
  color: var(--text-display);
}

.theme-toggle {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-visible);
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  transition: border-color 150ms var(--ease), color 150ms var(--ease);
}

.theme-toggle:hover {
  border-color: var(--text-display);
  color: var(--text-display);
}

nav.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-md) 0;
}

nav.main-nav a {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 150ms var(--ease);
  position: relative;
  padding: var(--space-xs) 0;
}

nav.main-nav a:hover {
  color: var(--text-secondary);
}

nav.main-nav a.active {
  color: var(--text-display);
}

nav.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -13px;
  height: 2px;
  background: var(--accent);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 12px 24px;
  min-height: 44px;
  border-radius: 999px;
  cursor: pointer;
  transition: opacity 150ms var(--ease), border-color 150ms var(--ease), color 150ms var(--ease);
}

.btn-primary {
  background: var(--text-display);
  color: var(--black);
  border: none;
}

.btn-primary:hover { opacity: 0.85; }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-visible);
}

.btn-secondary:hover {
  border-color: var(--text-display);
  color: var(--text-display);
}

/* ---------- Sections ---------- */
main {
  padding-bottom: var(--space-4xl);
}

section {
  margin-top: var(--space-3xl);
}

section:first-of-type {
  margin-top: var(--space-2xl);
}

.section-label {
  display: block;
  margin-bottom: var(--space-md);
}

/* ---------- Rows / lists ---------- */
.row-list {
  border-top: 1px solid var(--border);
}

.row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.row .row-label {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.row .row-value {
  color: var(--text-primary);
  text-align: right;
}

.link-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border);
  transition: opacity 150ms var(--ease);
}

.link-row:first-child {
  border-top: 1px solid var(--border);
}

.link-row:hover .link-row-title {
  color: var(--text-display);
}

.link-row:hover .arrow {
  transform: translateX(4px);
}

.link-row-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 18px;
  color: var(--text-primary);
  transition: color 150ms var(--ease);
}

.link-row-meta {
  display: block;
  margin-top: var(--space-xs);
}

.arrow {
  font-family: 'Space Mono', monospace;
  color: var(--text-secondary);
  transition: transform 150ms var(--ease);
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-right: var(--space-xs);
}

.status-dot.active { background: var(--success); }
.status-dot.pending { background: var(--warning); }
.status-dot.archived { background: var(--text-disabled); }

/* ---------- Skill category cards ---------- */
.skill-block {
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-2xl);
}

.skill-block:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.skill-block-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.skill-index {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
}

.skill-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  font-weight: 300;
  line-height: 1.5;
}

.skill-list li:last-child { border-bottom: none; }

.skill-evidence {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--interactive);
  margin-left: var(--space-sm);
  white-space: nowrap;
}

.skill-evidence:hover { text-decoration: underline; }

.skill-tier-note {
  margin-top: calc(-1 * var(--space-sm));
  margin-bottom: var(--space-md);
}

/* ---------- Dot grid decoration ---------- */
.dot-grid {
  background-image: radial-gradient(circle, var(--border-visible) 1px, transparent 1px);
  background-size: 16px 16px;
  opacity: 0.5;
}

/* ---------- Forms ---------- */
.field {
  margin-bottom: var(--space-xl);
}

.field label {
  display: block;
  margin-bottom: var(--space-sm);
}

.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-visible);
  color: var(--text-primary);
  font-family: 'Space Mono', monospace;
  font-size: 15px;
  padding: var(--space-sm) 0;
  outline: none;
  transition: border-color 150ms var(--ease);
}

.field textarea {
  resize: vertical;
  min-height: 96px;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--text-display);
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-disabled);
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0 var(--space-3xl);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* ---------- Article (project detail) ---------- */
.article h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 22px;
  color: var(--text-display);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.article h3 {
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.article p {
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.article ul {
  list-style: none;
  margin-bottom: var(--space-md);
}

.article li {
  position: relative;
  padding-left: var(--space-lg);
  padding-bottom: var(--space-sm);
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-primary);
}

.article li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--text-disabled);
}

.article strong {
  color: var(--text-display);
  font-weight: 500;
}

.article a {
  color: var(--interactive);
  border-bottom: 1px solid transparent;
}

.article a:hover {
  border-bottom-color: var(--interactive);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 150ms var(--ease);
}

.back-link:hover { color: var(--text-display); }

.meta-strip {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-2xl);
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .brand-row { align-items: flex-start; }
  nav.main-nav { gap: var(--space-md); }
  .link-row { flex-direction: column; align-items: flex-start; gap: var(--space-xs); }
  .row { flex-direction: column; gap: var(--space-xs); }
  .row .row-value { text-align: left; }
}

@media (max-width: 700px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* ---------- Project cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.project-card {
  border: 1px solid var(--border);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: border-color 150ms var(--ease);
}

.project-card:hover { border-color: var(--border-visible); }

.project-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
}

.project-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 18px;
  color: var(--text-display);
}

.project-card-category {
  display: block;
  margin-top: var(--space-2xs);
}

.status-tag {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-visible);
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.status-tag.in-development {
  color: var(--warning);
  border-color: var(--warning);
}

.project-card-outcome {
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-primary);
}

.project-card-tech {
  margin-top: auto;
  padding-top: var(--space-sm);
}

.project-card-link {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--interactive);
}

/* ---------- Proof strip ---------- */
.proof-list { border-top: 1px solid var(--border); }

.proof-item {
  display: flex;
  gap: var(--space-md);
  align-items: baseline;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.proof-index {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  flex-shrink: 0;
  width: 24px;
}

.proof-text {
  font-weight: 300;
  color: var(--text-primary);
}

/* ---------- Diagrams ---------- */
.workflow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
  padding: 0;
  list-style: none;
}

.article .workflow li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding-left: 0;
  padding-bottom: 0;
}

.article .workflow li::before {
  content: none;
}

.workflow-step {
  display: inline-block;
  border: 1px solid var(--border-visible);
  padding: var(--space-sm) var(--space-md);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
  white-space: nowrap;
}

.workflow li:not(:last-child)::after {
  content: '→';
  color: var(--text-secondary);
  font-family: 'Space Mono', monospace;
}

.diagram-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.diagram-node {
  border: 1px solid var(--border-visible);
  padding: var(--space-md);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: center;
  color: var(--text-primary);
  min-width: 140px;
}

.diagram-node .caption { display: block; margin-top: var(--space-xs); }

.diagram-node.manager {
  border-color: var(--text-display);
  color: var(--text-display);
}

.diagram-arrow {
  color: var(--text-secondary);
  font-family: 'Space Mono', monospace;
  font-size: 16px;
}

@media (max-width: 600px) {
  .workflow { flex-direction: column; align-items: flex-start; }
  .workflow li { flex-direction: column; align-items: flex-start; gap: var(--space-xs); }
  .workflow li:not(:last-child)::after { content: '↓'; }
  .diagram-grid { flex-direction: column; }
  .diagram-arrow { transform: rotate(90deg); }
}

/* ---------- Accessibility ---------- */
.skip-link {
  position: absolute;
  top: -48px;
  left: var(--space-lg);
  z-index: 100;
  background: var(--text-display);
  color: var(--black);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 10px 16px;
  border-radius: 4px;
  transition: top 150ms var(--ease);
}

.skip-link:focus {
  top: var(--space-md);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}