/* ============================================
   OULI.INFO – NEO-BRUTALISM DESIGN SYSTEM
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700;800&display=swap');

/* --- Design Tokens --- */
:root {
  /* Neo-Brutalist palette */
  --bg-color: #FFFFFF;
  --bg-secondary: #D9E8F5;
  /* Jäänsininen */
  --bg-tertiary: #FFE8CC;
  /* Pehmeä keltainen/oranssi taustoihin */
  --text-main: #0B0C10;
  /* Äärimmäinen kontrasti */
  --accent-primary: #FF4D00;
  /* Ärsyke-oranssi */
  --accent-secondary: #00D4AA;
  /* Turkoosi demottamiseen */

  /* Borders & Shadows */
  --border-thick: 3px solid var(--text-main);
  --border-thin: 2px solid var(--text-main);
  --shadow-hard: 6px 6px 0px var(--text-main);
  --shadow-hard-hover: 2px 2px 0px var(--text-main);

  --radius-brutal: 0px;
  /* Brutalismissa yleensä terävät kulmat */

  /* Typography */
  --font-main: 'Space Grotesk', sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
}

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

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

body {
  font-family: var(--font-main);
  color: var(--text-main);
  background: var(--bg-color);
  line-height: 1.6;
  overflow-x: hidden;
  border-left: var(--border-thick);
  border-right: var(--border-thick);
  max-width: 1440px;
  margin: 0 auto;
  box-shadow: 0 0 0 100vmax var(--bg-color);
  clip-path: inset(0 -100vmax);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 800;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

a {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 700;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-bottom: var(--border-thick);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-color);
  border-bottom: var(--border-thick);
  max-width: 1440px;
  margin: 0 auto;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo {
  font-size: 1.5rem;
  padding: 0 var(--space-md);
  border-right: var(--border-thick);
  height: 100%;
  display: flex;
  align-items: center;
  background: var(--accent-primary);
  color: white;
  text-shadow: 2px 2px 0 var(--text-main);
}

.nav-links {
  display: flex;
  list-style: none;
  height: 100%;
}

.nav-links a {
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  border-left: var(--border-thick);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--bg-secondary);
}

.nav-toggle {
  display: none;
  background: var(--accent-primary);
  border: none;
  border-left: var(--border-thick);
  color: white;
  font-size: 1.5rem;
  width: 70px;
  height: 100%;
  cursor: pointer;
  font-weight: bold;
}

/* --- Language Switcher --- */
.lang-switcher {
  display: flex;
  align-items: center;
  height: 100%;
  border-left: var(--border-thick);
  padding: 0 var(--space-sm);
  gap: 0.25rem;
}

.lang-switcher a {
  padding: 0.2rem 0.4rem;
  font-weight: 800;
  font-size: 0.85rem;
  color: #999;
  text-decoration: none;
  transition: var(--transition-fast);
}

.lang-switcher a.lang-active {
  color: var(--text-main);
}

.lang-switcher a:hover {
  color: var(--accent-primary);
}

.lang-sep {
  font-weight: 800;
  color: var(--accent-primary);
  font-size: 0.85rem;
}

/* --- Section Base --- */
.section {
  padding: var(--space-xl) var(--space-md);
  border-bottom: var(--border-thick);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  display: inline-block;
  background: var(--bg-secondary);
  padding: 0.2rem 1rem;
  border: var(--border-thick);
  box-shadow: var(--shadow-hard);
}

.section-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
  max-width: 700px;
  font-weight: 500;
}

.bg-blue {
  background: var(--bg-secondary);
}

.bg-yellow {
  background: var(--bg-tertiary);
}

.bg-white {
  background: var(--bg-color);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: var(--border-thick);
  padding-top: 70px;
  /* Offset for nav */
}

.hero-content {
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: var(--border-thick);
  background: var(--bg-tertiary);
}

.hero-image {
  background: url('../img/pekka-hero.jpg') center top/cover no-repeat;
  filter: grayscale(100%) contrast(1.2);
  border-left: var(--border-thick);
  margin-left: -3px;
  /* Overlap border */
}

.hero-badge {
  display: inline-block;
  background: var(--bg-color);
  border: var(--border-thick);
  padding: 0.5rem 1rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  align-self: flex-start;
  box-shadow: var(--shadow-hard);
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 6rem);
  margin-bottom: var(--space-md);
}

.hero-tagline {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: var(--space-lg);
}

.hero-cta {
  align-self: flex-start;
  background: var(--accent-primary);
  color: white;
  border: var(--border-thick);
  padding: 1rem 2.5rem;
  font-size: 1.2rem;
  box-shadow: var(--shadow-hard);
  transition: var(--transition-fast);
}

.hero-cta:hover {
  transform: translate(4px, 4px);
  box-shadow: var(--shadow-hard-hover);
}

/* --- About Grid --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-lg);
}

.about-image {
  border: var(--border-thick);
  box-shadow: var(--shadow-hard);
}

.about-image img {
  border-bottom: none;
  filter: grayscale(100%) contrast(1.2);
}

.about-text h2 {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.about-text p {
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: var(--space-md);
}

.skill-tag {
  background: var(--bg-color);
  border: var(--border-thick);
  padding: 0.5rem 1rem;
  font-weight: 700;
  box-shadow: 4px 4px 0px var(--text-main);
}

/* --- Features (Johanna/AI) --- */
.attribute-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.attribute-card {
  background: var(--bg-color);
  border: var(--border-thick);
  padding: var(--space-md);
  box-shadow: var(--shadow-hard);
}

.attribute-card .icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
  display: inline-block;
}

.attribute-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

/* --- Project Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--bg-color);
  border: var(--border-thick);
  box-shadow: var(--shadow-hard);
  display: flex;
  flex-direction: column;
  transition: var(--transition-fast);
}

.card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0px var(--text-main);
}

.card-image {
  background: #EEE;
  border-bottom: var(--border-thick);
  filter: grayscale(100%) contrast(1.1);
  transition: filter 0.3s;
}

.card:hover .card-image {
  filter: grayscale(0%);
}

.card-body {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-tag {
  display: inline-block;
  background: var(--text-main);
  color: white;
  padding: 0.2rem 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  align-self: flex-start;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.card-desc {
  margin-bottom: var(--space-md);
  flex: 1;
}

.card-link {
  display: inline-block;
  background: var(--bg-secondary);
  border: var(--border-thin);
  padding: 0.5rem 1rem;
  text-align: center;
  box-shadow: 3px 3px 0 var(--text-main);
}

.card-link:hover {
  background: var(--accent-primary);
  color: white;
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--text-main);
}

/* --- Footer --- */
.footer {
  background: var(--bg-color);
  padding: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.footer-col {
  padding: var(--space-xl) var(--space-md);
}

.footer-col:first-child {
  border-right: var(--border-thick);
  background: var(--accent-primary);
  color: white;
}

.footer-col h3 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
  font-size: 1.2rem;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-col:first-child .footer-links a {
  color: white;
}

.footer-links a:hover {
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: var(--space-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border: var(--border-thick);
  background: var(--bg-color);
  color: var(--text-main) !important;
  font-size: 1.2rem;
  box-shadow: 4px 4px 0 var(--text-main);
  transition: var(--transition-fast);
}

.social-link:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--text-main);
}

.footer-bottom {
  border-top: var(--border-thick);
  padding: var(--space-md);
  text-align: center;
  font-weight: 700;
  background: var(--text-main);
  color: white;
}

/* --- Responsive --- */
@media (max-width: 900px) {

  /* Nav overflow fix */
  .nav {
    max-width: 100vw;
    left: 0;
    right: 0;
  }

  .nav-inner {
    min-width: 0;
    flex-wrap: wrap;
  }

  .nav-logo {
    order: 1;
  }

  .lang-switcher {
    border-left: none;
    border-right: var(--border-thick);
    padding: 0 0.6rem;
    margin-left: auto;
    order: 2;
  }

  .nav-toggle {
    order: 3;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    background: var(--bg-color);
    background-color: #FFFFFF;
    flex-direction: column;
    border-bottom: var(--border-thick);
    z-index: 999;
    order: 4;
  }

  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto 250px;
  }

  .hero-content {
    border-right: none;
    border-bottom: var(--border-thick);
    padding: var(--space-lg) var(--space-md);
  }

  .hero h1 {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }

  .hero-tagline {
    font-size: 1.2rem;
  }

  .hero-image {
    border-left: none;
    margin-left: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    border-left: none;
    border-bottom: var(--border-thick);
    padding: 1rem var(--space-md);
    min-height: 48px;
  }

  .nav-toggle {
    display: block;
  }

  /* Card grid: stack single column */
  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* Section padding */
  .section {
    padding: var(--space-lg) var(--space-sm);
  }

  .about-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-col:first-child {
    border-right: none;
    border-bottom: var(--border-thick);
  }

  .section-title {
    font-size: 2rem;
  }

  /* Touch targets */
  .skill-tag {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}

/* --- Small screens --- */
@media (max-width: 480px) {
  .section-title {
    font-size: 1.5rem;
    padding: 0.2rem 0.5rem;
  }

  .hero h1 {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
  }

  .hero-cta {
    padding: 0.8rem 1.6rem;
    font-size: 1rem;
    width: 100%;
    text-align: center;
  }

  .about-grid {
    gap: var(--space-md);
  }

  .about-text h2 {
    font-size: 1.8rem;
  }

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

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

  .footer-col {
    padding: var(--space-lg) var(--space-sm);
  }

  .social-link {
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }
}