/* ============================================
   DANIEL HAJNOS — SOFTWARE ENGINEER PORTFOLIO
   Neobrutalism Design System
   ============================================ */

/* --- CSS Variables --- */
:root {
  /* Colors */
  --color-black: #000000;
  --color-white: #FFFFFF;
  --color-red: #FF2D55;
  --color-orange: #FF6B35;
  --color-yellow: #FFD60A;
  --color-green: #34D399;
  --color-blue: #3B82F6;
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #E0E0E0;
  --color-gray-300: #CCCCCC;
  --color-gray-400: #999999;
  --color-gray-500: #666666;
  --color-gray-600: #555555;
  --color-gray-700: #333333;
  --color-gray-800: #222222;
  --color-gray-900: #111111;

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'Space Mono', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Borders */
  --border-thick: 3px solid var(--color-black);
  --border-thicker: 4px solid var(--color-black);
  --border-thin: 2px solid var(--color-black);

  /* Shadows — hard, no blur */
  --shadow-sm: 4px 4px 0 var(--color-black);
  --shadow-md: 6px 6px 0 var(--color-black);
  --shadow-lg: 8px 8px 0 var(--color-black);
  --shadow-xl: 12px 12px 0 var(--color-black);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-display);
  background: var(--color-white);
  color: var(--color-black);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

ul {
  list-style: none;
}

/* --- Utility --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-white);
  border-bottom: var(--border-thick);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__prompt {
  color: var(--color-orange);
  font-weight: 700;
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: relative;
  padding: 0.25rem 0;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--color-orange);
  transition: width 0.3s ease;
}

.nav__links a:hover::after {
  width: 100%;
}

.nav__links a:hover {
  color: var(--color-orange);
}

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--color-black);
  transition: all 0.3s ease;
}

.nav__burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.nav__burger.active span:nth-child(2) {
  opacity: 0;
}

.nav__burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  margin-top: var(--nav-height);
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  flex-direction: column;
  border-bottom: var(--border-thick);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
  align-items: center;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-orange);
  margin-bottom: var(--space-sm);
}

.hero__title {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-md);
}

.hero__accent {
  color: var(--color-orange);
  font-style: italic;
}

.hero__tagline {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-gray-600);
  max-width: 400px;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Terminal */
.terminal {
  border: var(--border-thicker);
  box-shadow: var(--shadow-xl);
  background: var(--color-gray-900);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.terminal:hover {
  transform: translate(-4px, -4px);
  box-shadow: 16px 16px 0 var(--color-black);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-gray-800);
  border-bottom: var(--border-thin);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--color-gray-600);
}

.terminal__dot--red {
  background: var(--color-red);
  border-color: var(--color-red);
}

.terminal__dot--yellow {
  background: var(--color-yellow);
  border-color: var(--color-yellow);
}

.terminal__dot--green {
  background: var(--color-green);
  border-color: var(--color-green);
}

.terminal__title {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--color-gray-400);
}

.terminal__body {
  padding: var(--space-md);
  line-height: 1.8;
}

.terminal__prompt {
  color: var(--color-orange);
  font-weight: 700;
}

.terminal__output {
  color: var(--color-gray-300);
}

.terminal__status {
  color: var(--color-green);
  font-weight: 700;
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--color-green);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Marquee */
.hero__marquee {
  border-top: var(--border-thick);
  background: var(--color-black);
  color: var(--color-white);
  overflow: hidden;
  padding: var(--space-sm) 0;
}

.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee 25s linear infinite;
}

.marquee__text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  white-space: nowrap;
  padding-right: var(--space-xl);
  color: var(--color-gray-400);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 1rem 2rem;
  border: var(--border-thick);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-black);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  background: var(--color-orange);
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--color-black);
}

.btn--primary:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 var(--color-black);
}

.btn--outline {
  background: var(--color-white);
  color: var(--color-black);
  box-shadow: var(--shadow-sm);
}

.btn--outline:hover {
  background: var(--color-black);
  color: var(--color-yellow);
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--color-black);
}

.btn--large {
  font-size: 1rem;
  padding: 1.25rem 2.5rem;
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.section__number {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-black);
  background: var(--color-yellow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  flex-shrink: 0;
  border: var(--border-thin);
}

.section__title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* ============================================
   SKILLS
   ============================================ */
.skills {
  padding: var(--space-3xl) 0;
  border-bottom: var(--border-thick);
}

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

.skill-card {
  border: var(--border-thick);
  padding: var(--space-lg);
  background: var(--color-white);
  transition: all 0.3s ease;
  position: relative;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-orange);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.skill-card:hover::before {
  transform: scaleY(1);
}

.skill-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-lg);
}

.skill-card__icon {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.skill-card__name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.skill-card__desc {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.skill-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.75rem;
  border: var(--border-thin);
  background: var(--color-gray-100);
  transition: all 0.2s ease;
}

.tag:hover {
  background: var(--color-black);
  color: var(--color-white);
}

/* Skill card color variants */
.skill-card--red .skill-card__icon { color: var(--color-red); }
.skill-card--red { border-color: var(--color-red); }
.skill-card--red:hover { box-shadow: 8px 8px 0 var(--color-red); }

.skill-card--orange .skill-card__icon { color: var(--color-orange); }
.skill-card--orange { border-color: var(--color-orange); }
.skill-card--orange:hover { box-shadow: 8px 8px 0 var(--color-orange); }

.skill-card--yellow .skill-card__icon { color: var(--color-yellow); }
.skill-card--yellow { border-color: var(--color-yellow); }
.skill-card--yellow:hover { box-shadow: 8px 8px 0 var(--color-yellow); }

.skill-card--green .skill-card__icon { color: var(--color-green); }
.skill-card--green { border-color: var(--color-green); }
.skill-card--green:hover { box-shadow: 8px 8px 0 var(--color-green); }

.skill-card--blue .skill-card__icon { color: var(--color-blue); }
.skill-card--blue { border-color: var(--color-blue); }
.skill-card--blue:hover { box-shadow: 8px 8px 0 var(--color-blue); }

.skill-card--purple .skill-card__icon { color: var(--color-purple); }
.skill-card--purple { border-color: var(--color-purple); }
.skill-card--purple:hover { box-shadow: 8px 8px 0 var(--color-black); }

/* ============================================
   PROJECTS
   ============================================ */
.projects {
  padding: var(--space-3xl) 0;
  border-bottom: var(--border-thick);
  background: var(--color-gray-100);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.project-card {
  border: var(--border-thick);
  padding: var(--space-lg);
  background: var(--color-white);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-orange);
}

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.project-card__lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.35rem 0.75rem;
}

.project-card__lang--csharp {
  color: var(--color-white);
  background: var(--color-blue);
}

.project-card__lang--python {
  color: var(--color-black);
  background: var(--color-yellow);
}

.project-card__lang--go {
  color: var(--color-white);
  background: var(--color-green);
}

.project-card__lang--sql {
  color: var(--color-white);
  background: var(--color-orange);
}

.project-card__icon {
  width: 24px;
  height: 24px;
  color: var(--color-gray-400);
  transition: color 0.2s ease;
}

.project-card:hover .project-card__icon {
  color: var(--color-orange);
}

.project-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.project-card__desc {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-gray-600);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
  flex-grow: 1;
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
  padding: var(--space-3xl) 0;
  border-bottom: var(--border-thick);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about__text {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

.about__terminal {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
}

.about__terminal .terminal {
  border-color: var(--color-purple);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: var(--space-3xl) 0;
  border-bottom: var(--border-thick);
  background: var(--color-gray-100);
}

.contact__inner {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact__text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-gray-600);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.contact__links {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}

.contact__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: var(--border-thin);
  background: var(--color-white);
  transition: all 0.2s ease;
}

.contact__link:hover {
  background: var(--color-orange);
  color: var(--color-black);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-sm);
}

.contact__link svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-black);
  color: var(--color-white);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gray-400);
}

.footer__back a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-400);
  transition: color 0.2s ease;
}

.footer__back a:hover {
  color: var(--color-orange);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    padding: var(--space-xl) var(--space-md);
  }

  .hero__visual {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .about__terminal {
    position: static;
    max-width: 500px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: var(--border-thick);
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .nav__links.open {
    transform: translateY(0);
  }

  .nav__burger {
    display: flex;
  }

  .hero__title {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

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

  .terminal {
    font-size: 0.75rem;
  }

  .terminal__body {
    padding: var(--space-sm);
  }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-xs);
    text-align: center;
  }

  .contact__links {
    flex-direction: column;
    align-items: center;
  }

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

@media (max-width: 480px) {
  .section__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }

  .section__number {
    width: 40px;
    height: 40px;
    font-size: 0.8rem;
  }

  .section__title {
    font-size: 1.75rem;
  }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .cursor {
    animation: none;
    opacity: 1;
  }
}