/* ==========================================================================
   Resume Website — Style System
   Design: "Terminal Meets Modern Web"
   Dark-mode-first, monospace accents, emerald accent
   ========================================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors */
  --bg-primary: #0f0f0f;
  --bg-surface: #1a1a1a;
  --bg-elevated: #242424;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #34d399;
  --accent-dim: #059669;
  --accent-muted: #064e3b;
  --border: #2e2e2e;
  --border-accent: #34d39933;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;

  /* 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;

  /* Layout */
  --container-max: 720px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Skip Link (Accessibility) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--accent);
  color: var(--bg-primary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  z-index: 1000;
  text-decoration: none;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- Focus Styles --- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

a:focus:not(:focus-visible) {
  outline: none;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* --- Links --- */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

/* ==========================================================================
   Section System
   ========================================================================== */

.section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: none;
}

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: lowercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.section-label::before {
  content: '//';
  color: var(--accent-dim);
}

/* ==========================================================================
   Hero / Header
   ========================================================================== */

.hero {
  padding: var(--space-16) 0 var(--space-12);
  border-bottom: 1px solid var(--border);
}

.hero__name {
  font-family: var(--font-body);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.hero__title {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--accent);
  margin-bottom: var(--space-1);
}

.hero__tagline {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-8);
}

.hero__contact {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  list-style: none;
}

.hero__contact-item {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hero__contact-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--text-muted);
}

.hero__contact-item a {
  color: var(--text-secondary);
}

.hero__contact-item a:hover {
  color: var(--accent);
}

/* ==========================================================================
   Redacted / Glitch Effect
   ========================================================================== */

.redacted {
  position: relative;
  filter: blur(3.5px);
  user-select: none;
  cursor: pointer;
  transition: filter var(--duration-normal) var(--ease-out);
}

.redacted::before {
  content: attr(data-glitch);
  position: absolute;
  top: 0;
  left: 0;
  color: var(--accent);
  opacity: 0;
  filter: blur(2px);
  clip-path: inset(0 0 0 0);
  animation: glitch-clip 3s infinite linear;
}

.redacted:hover::before {
  opacity: 0.6;
}

.redacted:hover {
  filter: blur(3px);
}

/* Tooltip */
.tooltip-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.tooltip-wrapper::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-elevated);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
  z-index: 10;
}

.tooltip-wrapper:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.tooltip-wrapper.is-copied::after {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

/* Glitch keyframes */
@keyframes glitch-clip {
  0% { clip-path: inset(40% 0 60% 0); transform: translate(-2px, 1px); }
  5% { clip-path: inset(10% 0 85% 0); transform: translate(2px, -1px); }
  10% { clip-path: inset(80% 0 5% 0); transform: translate(-1px, 2px); }
  15% { clip-path: inset(0 0 100% 0); transform: translate(0); }
  20% { clip-path: inset(50% 0 30% 0); transform: translate(1px, -2px); }
  25% { clip-path: inset(0 0 100% 0); transform: translate(0); }
  30% { clip-path: inset(20% 0 70% 0); transform: translate(-2px, 0); }
  35% { clip-path: inset(0 0 100% 0); transform: translate(0); }
  100% { clip-path: inset(0 0 100% 0); transform: translate(0); }
}

/* ==========================================================================
   Profile Summary
   ========================================================================== */

.summary__text {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--text-secondary);
  border-left: 2px solid var(--accent-dim);
  padding-left: var(--space-6);
  max-width: 65ch;
}

/* ==========================================================================
   Technical Skills
   ========================================================================== */

.skills-group {
  margin-bottom: var(--space-6);
}

.skills-group:last-child {
  margin-bottom: 0;
}

.skills-group__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.skills-group__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: border-color var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out);
}

.tag:hover {
  border-color: var(--border-accent);
}

.tag--accent {
  background: var(--accent-muted);
  color: var(--accent);
  border-color: var(--accent-dim);
}

.tag--accent:hover {
  background: #065f46;
}

/* ==========================================================================
   Work Experience
   ========================================================================== */

.experience-item {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-10);
}

.experience-item:last-child {
  margin-bottom: 0;
}

.experience-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--accent-dim);
  border-radius: 50%;
}

.experience-item::after {
  content: '';
  position: absolute;
  left: 2.5px;
  top: 20px;
  bottom: -var(--space-10);
  width: 1px;
  background: var(--border);
}

.experience-item:last-child::after {
  display: none;
}

.experience-item__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.experience-item__role {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.experience-item__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
}

.experience-item__bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.experience-item__bullets li {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--text-secondary);
  padding-left: var(--space-5);
  position: relative;
}

.experience-item__bullets li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent-dim);
  font-family: var(--font-mono);
  font-weight: 500;
}

.experience-item__bullets li strong {
  color: var(--text-primary);
  font-weight: 500;
}

/* ==========================================================================
   Projects
   ========================================================================== */

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
}

.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.project-card__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.project-card__subtitle {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.project-card__bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.project-card__bullets li {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--text-secondary);
  padding-left: var(--space-5);
  position: relative;
}

.project-card__bullets li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent-dim);
  font-family: var(--font-mono);
  font-weight: 500;
}

.project-card__bullets li strong {
  color: var(--text-primary);
  font-weight: 500;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}

/* ==========================================================================
   Education
   ========================================================================== */

.education__degree {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.education__school {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

.education__year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding: var(--space-8) 0;
  text-align: center;
}

.footer__text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ==========================================================================
   Scroll Animations
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.fade-in-group > .fade-in:nth-child(1) { transition-delay: 0ms; }
.fade-in-group > .fade-in:nth-child(2) { transition-delay: 50ms; }
.fade-in-group > .fade-in:nth-child(3) { transition-delay: 100ms; }
.fade-in-group > .fade-in:nth-child(4) { transition-delay: 150ms; }
.fade-in-group > .fade-in:nth-child(5) { transition-delay: 200ms; }
.fade-in-group > .fade-in:nth-child(6) { transition-delay: 250ms; }
.fade-in-group > .fade-in:nth-child(7) { transition-delay: 300ms; }

/* ==========================================================================
   Chat Agent
   ========================================================================== */

.chat-agent {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  z-index: 50;
  display: flex;
  flex-direction: row-reverse;
  align-items: flex-end;
  gap: var(--space-4);
  pointer-events: none;
}

.chat-agent__shape-wrapper {
  width: 80px;
  height: 80px;
  color: var(--accent);
  pointer-events: auto;
  cursor: help;
  position: relative;
}

.chat-agent__shape-wrapper canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  border-radius: 50%;
  outline: none;
}

.chat-agent__tooltip {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  max-width: 250px;
  opacity: 0;
  transform: translateX(10px);
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  line-height: 1.4;
}

.chat-agent__shape-wrapper:hover ~ .chat-agent__tooltip,
.chat-agent__shape-wrapper:focus ~ .chat-agent__tooltip {
  opacity: 1;
  transform: translateX(0);
}

@media (max-width: 768px) {
  .chat-agent {
    display: none !important;
  }
}

/* ==========================================================================
   Responsive — Desktop (≥768px)
   ========================================================================== */

@media (min-width: 768px) {
  .hero {
    padding: var(--space-16) 0 var(--space-16);
  }

  .hero__name {
    font-size: 2.5rem;
  }

  .section {
    padding: var(--space-16) 0;
  }

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

  .experience-item__header {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
  }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .project-card:hover {
    transform: none;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  :root {
    --bg-primary: #ffffff;
    --bg-surface: #ffffff;
    --bg-elevated: #f5f5f5;
    --text-primary: #18181b;
    --text-secondary: #3f3f46;
    --text-muted: #71717a;
    --accent: #059669;
    --accent-dim: #059669;
    --accent-muted: #d1fae5;
    --border: #d4d4d8;
  }

  body {
    font-size: 11pt;
    line-height: 1.5;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .hero {
    padding: 0 0 1rem;
  }

  .section {
    padding: 1rem 0;
    page-break-inside: avoid;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }

  .project-card {
    border: 1px solid var(--border);
    box-shadow: none;
  }

  .project-card:hover {
    transform: none;
  }

  .skip-link {
    display: none;
  }
}