/* ============================================================
   Omar Jiménez — Personal Website
   Dark theme (GitHub Dark inspired)
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg:             #0d1117;
  --surface:        #161b22;
  --surface2:       #1c2128;
  --border:         #30363d;
  --text:           #e6edf3;
  --muted:          #8b949e;
  --accent-blue:    #58a6ff;
  --accent-green:   #3fb950;
  --accent-orange:  #f0883e;
  --accent-purple:  #bc8cff;
  --accent-red:     #f85149;
  --nav-height:     64px;
  --radius:         8px;
  --radius-lg:      16px;
  --transition:     0.25s ease;
  --shadow-glow-blue:   0 0 20px rgba(88,166,255,0.15);
  --shadow-glow-green:  0 0 20px rgba(63,185,80,0.15);
  --shadow-glow-orange: 0 0 20px rgba(240,136,62,0.15);
  --shadow-glow-purple: 0 0 20px rgba(188,140,255,0.15);
}

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

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--accent-blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: #79c0ff; }

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

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ---------- Navigation ---------- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(13,17,23,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  transition: background var(--transition);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.5px;
  margin-right: auto;
}

.nav-logo span { color: var(--accent-blue); }

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.875rem;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(88,166,255,0.1);
}

.nav-links a.active { color: var(--accent-blue); }

/* Language Toggle */
#lang-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.5px;
}

#lang-toggle:hover {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: #0d1117;
  box-shadow: var(--shadow-glow-blue);
}

/* Hamburger */
#nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

#nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- Hero ---------- */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 40px) 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(88,166,255,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(63,185,80,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 60%, rgba(188,140,255,0.05) 0%, transparent 60%);
  animation: heroGradient 12s ease-in-out infinite alternate;
}

@keyframes heroGradient {
  0%   { opacity: 0.8; transform: scale(1); }
  100% { opacity: 1;   transform: scale(1.05); }
}

.hero-content { position: relative; z-index: 1; max-width: 720px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(63,185,80,0.12);
  border: 1px solid rgba(63,185,80,0.3);
  color: var(--accent-green);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.hero-badge::before {
  content: '';
  width: 7px; height: 7px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.hero-name {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--muted);
  margin-bottom: 24px;
  min-height: 2em;
}

.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent-blue);
  margin-left: 3px;
  vertical-align: middle;
  animation: blink 0.9s step-end infinite;
}

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

.hero-bio {
  font-size: 1rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-blue);
  color: #0d1117;
}
.btn-primary:hover {
  background: #79c0ff;
  color: #0d1117;
  box-shadow: var(--shadow-glow-blue);
  transform: translateY(-2px);
}
.btn-orange {
  background: var(--accent-orange);
  color: #0d1117;
}
.btn-orange:hover {
  background: #ffb347;
  color: #0d1117;
  box-shadow: 0 0 12px rgba(210,153,69,0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

.scroll-cta {
  margin-top: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.8rem;
  animation: bounce 2.5s infinite;
}

.scroll-cta svg { color: var(--muted); }

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}

/* ---------- Sections ---------- */
section { padding: 96px 24px; }

.section-inner { max-width: 1100px; margin: 0 auto; }

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-blue);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--muted);
  max-width: 600px;
  margin-bottom: 56px;
  line-height: 1.7;
}

/* ---------- About ---------- */
#about { background: var(--surface); }

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

.about-text p {
  color: var(--muted);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.stat-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-blue);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
}

.skills-section h3 {
  font-size: 1rem;
  color: var(--muted);
  margin-top: 28px;
  margin-bottom: 20px;
  font-weight: 500;
}

.skills-section h3:first-child {
  margin-top: 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.875rem;
  transition: all var(--transition);
}

.skill-item:hover {
  border-color: var(--accent-blue);
  transform: translateX(4px);
}

.skill-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.skill-icon-svg {
  stroke: var(--muted);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.certs-list {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--muted);
}

.cert-item::before {
  content: '\25B8';
  color: var(--accent-green);
  font-size: 0.75rem;
}

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}

.project-card.card-blue::before  { background: var(--accent-blue); }
.project-card.card-green::before { background: var(--accent-green); }

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
}

.project-card.card-green:hover {
  border-color: var(--accent-green);
  box-shadow: var(--shadow-glow-green);
}

.project-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.project-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.project-desc {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

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

.tag {
  background: rgba(88,166,255,0.1);
  border: 1px solid rgba(88,166,255,0.2);
  color: var(--accent-blue);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}

.tag.green {
  background: rgba(63,185,80,0.1);
  border-color: rgba(63,185,80,0.2);
  color: var(--accent-green);
}

/* ---------- Metrics ---------- */
#metrics { background: var(--surface); }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.metric-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.metric-icon {
  font-size: 1.6rem;
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text);
}

.metric-value.blue   { color: var(--accent-blue); }
.metric-value.green  { color: var(--accent-green); }
.metric-value.orange { color: var(--accent-orange); }
.metric-value.purple { color: var(--accent-purple); }
.metric-value.red    { color: var(--accent-red); }

.metric-sub {
  font-size: 0.8rem;
  color: var(--muted);
}

.metrics-footer {
  text-align: right;
  font-size: 0.8rem;
  color: var(--muted);
}

#metrics-updated { color: var(--accent-green); }
#rpi0-updated    { color: var(--accent-green); }
#bme-updated     { color: var(--accent-green); }

.metrics-stale {
  text-align: center;
  padding: 24px 16px;
  color: var(--muted);
  font-size: 0.9rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
}

.metrics-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0 32px;
}

.metrics-sub-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 6px;
}

.metrics-sub-desc {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 24px;
}

/* ---------- Blog ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
}

.blog-date {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.blog-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
}

.blog-excerpt {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 20px;
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.blog-tag {
  display: inline-block;
  background: rgba(188,140,255,0.1);
  border: 1px solid rgba(188,140,255,0.2);
  color: var(--accent-purple);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
}

.blog-read-more {
  font-size: 0.85rem;
  color: var(--accent-blue);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  font-weight: 600;
}

.blog-read-more:hover { gap: 8px; }

/* ---------- Footer ---------- */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 48px 24px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.footer-brand span { color: var(--accent-blue); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 4px;
}

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

.footer-links a {
  color: var(--muted);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

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

/* ---------- Scroll Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- Data Viz Page ---------- */
.project-card.card-orange::before { background: var(--accent-orange); }
.project-card.card-orange:hover {
  border-color: var(--accent-orange);
  box-shadow: var(--shadow-glow-orange);
}
.project-card.card-purple::before { background: var(--accent-purple); }
.project-card.card-purple:hover {
  border-color: var(--accent-purple);
  box-shadow: var(--shadow-glow-purple);
}
.tag.purple {
  background: rgba(188,140,255,0.1);
  border-color: rgba(188,140,255,0.2);
  color: var(--accent-purple);
}
.btn-purple {
  background: var(--accent-purple);
  color: #0d1117;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.85rem;
  transition: opacity var(--transition);
}
.btn-purple:hover { opacity: 0.85; color: #0d1117; }

.tag.orange {
  background: rgba(240,136,62,0.1);
  border-color: rgba(240,136,62,0.2);
  color: var(--accent-orange);
}

.dataviz-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: calc(var(--nav-height) + 48px) 24px 80px;
}

.map-status-bar {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.map-status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  display: inline-block;
  animation: pulse 2s infinite;
}
.map-status-warn { color: var(--accent-orange); }

#flight-map {
  height: 520px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--surface);
  margin-bottom: 24px;
}

.flight-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.chart-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

/* ---------- Shield ---------- */
img.emoji {
  height: 1em;
  width: 1em;
  margin: 0 0.05em 0 0.1em;
  vertical-align: -0.1em;
}

#shield { background: var(--bg); }
#blog   { background: var(--surface); }

.shield-stats  { margin-bottom: 32px; }
.shield-apex   { margin-top: 32px; }
#sh-updated    { color: var(--accent-green); }

#shield .chart-card {
  display: flex;
  flex-direction: column;
}
#shield .chart-canvas-wrap {
  flex: 1;
  height: auto;
  min-height: 220px;
}

.shield-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.shield-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 12px;
}

.shield-table th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}

.shield-table td {
  padding: 8px 8px;
  border-bottom: 1px solid rgba(48,54,61,0.5);
  color: var(--text);
  vertical-align: middle;
}

.shield-table tr:last-child td { border-bottom: none; }

.shield-table-empty {
  color: var(--muted);
  font-style: italic;
  text-align: center;
  padding: 24px 0 !important;
}

.shield-flag {
  font-size: 1.1rem;
  margin-right: 6px;
}

.shield-country {
  color: var(--muted);
  font-size: 0.8rem;
}

.shield-agent {
  color: var(--muted);
  font-size: 0.78rem;
}

.shield-time {
  color: var(--accent-green);
  font-size: 0.8rem;
  white-space: nowrap;
}

@media (max-width: 700px) {
  .shield-grid { grid-template-columns: 1fr; }
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.chart-card .section-label { margin-bottom: 16px; }
.chart-canvas-wrap { position: relative; height: 260px; width: 100%; }

.apex-placeholder {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.apex-placeholder::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent-orange);
}
.apex-coming-badge {
  display: inline-block;
  background: rgba(240,136,62,0.1);
  border: 1px solid rgba(240,136,62,0.2);
  color: var(--accent-orange);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.apex-icon { font-size: 3rem; margin-bottom: 16px; }
.apex-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.apex-desc {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 580px;
  margin: 0 auto 24px;
}
.btn-apex {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(240,136,62,0.1);
  border: 1px solid rgba(240,136,62,0.3);
  color: var(--accent-orange);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.btn-apex:hover {
  background: rgba(240,136,62,0.2);
  border-color: var(--accent-orange);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  #flight-map { height: 340px; }
  .chart-row { grid-template-columns: 1fr; }

  .nav-links { display: none; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(13,17,23,0.97);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
  }

  #nav-hamburger { display: flex; }

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

  .about-stats { grid-template-columns: repeat(3,1fr); }

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

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

  .footer-inner { flex-direction: column; text-align: center; }

  section { padding: 64px 20px; }
}

@media (max-width: 480px) {
  #flight-map { height: 260px; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .about-stats  { grid-template-columns: repeat(3,1fr); }
  .skills-grid  { grid-template-columns: 1fr; }
}