/* ==========================================================================
   2BKR DEV - Modern Minimalist Developer Portfolio
   Sophisticated, clean, typography-led, discreet dark interface
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-color: #080c14;
  --surface: #0e1422;
  --surface-hover: #131b2e;
  --border: #1c2638;
  --border-hover: #2e3e5c;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #38bdf8;
  --accent-dim: rgba(56, 189, 248, 0.12);
  --accent-border: rgba(56, 189, 248, 0.3);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* Subtle ambient gradient */
.ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 15% 10%, rgba(56, 189, 248, 0.04) 0%, transparent 40%),
              radial-gradient(circle at 85% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.wrapper {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* Header & Discreet Corner Logo */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.brand-corner {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 4px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.brand-corner:hover .brand-logo {
  border-color: var(--accent-border);
  transform: scale(1.04);
}

.brand-meta {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.action-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.4rem 0.85rem;
  border-radius: 9999px;
  text-decoration: none;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.action-pill:hover {
  color: #ffffff;
  border-color: var(--accent-border);
  background: var(--surface-hover);
}

/* Hero Section */
.hero {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-name {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #ffffff;
  line-height: 1.2;
}

.hero-headline {
  font-size: 1rem;
  font-weight: 400;
  color: var(--accent);
  line-height: 1.5;
  font-family: var(--font-mono);
}

.hero-bio {
  font-size: 0.95rem;
  color: #cbd5e1;
  line-height: 1.75;
  font-weight: 300;
  margin-top: 0.5rem;
}

/* Sections Common */
.section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}

.section-divider {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Technical Capacities Cards */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .cards-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: all 0.2s ease;
}

.feature-card:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 300;
}

/* Scientific Research & Validation */
.research-container {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.research-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.15rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.research-item strong {
  font-size: 0.9rem;
  color: #ffffff;
  font-weight: 500;
}

.research-item p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.zenodo-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  text-decoration: none;
  transition: all 0.2s ease;
  margin-top: 0.25rem;
}

.zenodo-card:hover {
  background: var(--surface-hover);
  border-color: var(--accent-border);
}

.zenodo-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.zenodo-title {
  font-size: 0.88rem;
  color: #ffffff;
  font-weight: 500;
}

.zenodo-sub {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.zenodo-arrow {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  transition: transform 0.2s ease;
}

.zenodo-card:hover .zenodo-arrow {
  transform: translateX(3px);
}

/* Contact & Code List */
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.95rem 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.contact-row:hover {
  background: var(--surface-hover);
  border-color: var(--accent-border);
}

.contact-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  font-weight: 500;
}

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

.contact-row:hover .contact-val {
  color: var(--accent);
}

/* Footer */
.site-footer {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .site-footer {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
}

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