/* ========================================
   Fernando Joost — Portfolio
   ======================================== */

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

:root {
  --bg-primary: #0F1923;
  --bg-card: #1A2735;
  --bg-terminal: #1E2D3D;
  --bg-alt: #111D29;
  --bg-footer: #0A1219;
  --text-primary: #FFFFFF;
  --text-secondary: #8899AA;
  --accent: #2A9AAA;
  --accent-hover: #3BBFCF;
  --accent-code-string: #E8A87C;
  --accent-code-keyword: #4A9BA8;
  --accent-code-key: #7ABACC;
  --border: #2A3A4A;
  --font-mono: 'Courier New', 'Fira Code', monospace;
  --font-sans: 'Helvetica Neue', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 25, 35, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.nav.scrolled {
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--accent);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

.lang-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.lang-option {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.lang-option.active {
  color: var(--accent);
  font-weight: 700;
}

.lang-separator {
  color: var(--border);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all 0.3s ease;
}

/* --- Hero --- */
.hero {
  padding: 140px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.terminal {
  background: var(--bg-terminal);
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
  max-width: 640px;
}

.terminal-bar {
  background: rgba(0, 0, 0, 0.3);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27C93F; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.terminal-body {
  padding: 20px 24px;
}

.code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  white-space: pre;
  overflow-x: auto;
}

.code-comment { color: var(--text-secondary); }
.code-keyword { color: var(--accent-code-keyword); }
.code-var { color: var(--text-primary); }
.code-string { color: var(--accent-code-string); }
.code-key { color: var(--accent-code-key); }

.cursor {
  display: inline-block;
  width: 8px;
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

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

.hero-cta {
  display: flex;
  gap: 16px;
  margin-top: 40px;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--accent);
  color: var(--text-primary);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}

.btn-outline:hover {
  background: rgba(42, 154, 170, 0.1);
  border-color: var(--accent-hover);
  color: var(--accent-hover);
}

/* --- Sections --- */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 40px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent);
  opacity: 0.3;
  transition: opacity 0.6s ease;
}

.section-tag.visible {
  opacity: 0.3;
}

.section-tag-open {
  margin-bottom: 16px;
}

.section-tag-close {
  margin-top: 16px;
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.skill-group {
  margin-bottom: 20px;
}

.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--accent);
}

.tag.accent {
  border-color: var(--accent);
  background: rgba(42, 154, 170, 0.08);
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
}

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

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  z-index: 1;
}

.section-alt .timeline-dot {
  background: var(--bg-alt);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease;
}

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

.timeline-header {
  margin-bottom: 12px;
}

.timeline-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.timeline-role {
  display: block;
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
}

.timeline-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.timeline-card > p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.timeline-card .tags {
  margin-top: 0;
}

/* --- Projects --- */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

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

.project-card-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
}

.project-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  margin-top: 4px;
}

.project-card > p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.project-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.project-metrics span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  background: rgba(42, 154, 170, 0.08);
  padding: 3px 10px;
  border-radius: 3px;
}

.project-links {
  margin-top: 16px;
}

.project-links a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.project-links a:hover {
  color: var(--accent);
}

.projects-more {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  opacity: 0.5;
  margin-top: 32px;
  text-align: center;
}

/* --- Community --- */
.community-banner {
  display: flex;
  align-items: center;
  gap: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
}

.community-logo {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.community-content h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.community-content p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color 0.2s ease;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s ease;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.contact-link:hover {
  color: var(--accent);
  border-color: var(--border);
  background: rgba(42, 154, 170, 0.04);
}

.contact-link svg {
  flex-shrink: 0;
  color: var(--accent);
}

/* --- Footer --- */
.footer {
  background: var(--bg-footer);
  padding: 32px 0;
  text-align: center;
}

.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer-text .code-string {
  color: var(--accent-code-string);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
}

/* --- Mobile --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(15, 25, 35, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }

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

  .nav-mobile-toggle {
    display: flex;
  }

  .nav-mobile-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-mobile-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-mobile-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .code {
    font-size: 0.75rem;
  }

  .terminal-body {
    padding: 16px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    text-align: center;
  }

  .section {
    padding: 64px 0;
  }

  .section h2 {
    font-size: 1.4rem;
    margin-bottom: 28px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .community-banner {
    flex-direction: column;
    text-align: center;
    padding: 28px;
  }

  .timeline {
    padding-left: 24px;
  }

  .timeline-dot {
    left: -24px;
    width: 12px;
    height: 12px;
  }

  .timeline::before {
    left: 5px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .terminal {
    border-radius: 6px;
  }

  .code {
    font-size: 0.7rem;
    line-height: 1.6;
  }
}