/* ══════════════════════════════════════════════
   Leonardo Rivera Agarie — Portfolio CSS
   Dark Editorial Aesthetic · 2026
══════════════════════════════════════════════ */

/* ─── CSS VARIABLES ─── */
:root {
  --bg: #070910;
  --bg-2: #0d1017;
  --bg-3: #141720;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(99, 157, 255, 0.3);
  --text: #e8eaf0;
  --text-muted: #6b7280;
  --text-dim: #9ca3af;
  --accent: #4f8ef7;
  --accent-light: #7aaeff;
  --accent-dim: rgba(79, 142, 247, 0.12);
  --accent-glow: rgba(79, 142, 247, 0.25);
  --green: #34d399;
  --purple: #a78bfa;
  --orange: #fb923c;
  --teal: #2dd4bf;
  --red: #f87171;
  --yellow: #fbbf24;
  --pink: #f472b6;
  --font-display: 'DM Serif Display', serif;
  --font-body: 'Sora', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 32px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── RESET & BASE ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ─── CUSTOM CURSOR ─── */
.cursor-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease, opacity 0.2s ease;
  mix-blend-mode: screen;
}
@media (hover: none) { .cursor-dot { display: none; } }

/* ─── CONTAINER ─── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ─── SECTION SPACING ─── */
.section-pad { padding: 120px 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  color: var(--text);
}
.section-title em {
  font-style: italic;
  color: var(--accent-light);
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-dim);
  max-width: 520px;
  margin-bottom: 3rem;
}

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-primary.btn-full { width: 100%; justify-content: center; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 1rem;
  transition: var(--transition);
}
.btn-icon:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  border-radius: 5px;
  border: 1px solid var(--accent);
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: 0.03em;
}
.btn-nav:hover {
  background: var(--accent-dim);
}

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── NAV ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: background 0.3s ease, border-bottom 0.3s ease;
}
.nav.scrolled {
  background: rgba(7, 9, 16, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
  margin-right: auto;
  letter-spacing: 0.05em;
}
.nav-logo .dot { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-dim);
  transition: color 0.2s;
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text);
  transition: var(--transition);
}

.nav-mobile {
  display: none;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2rem;
}
.nav-mobile.open { display: block; }
.nav-mobile ul { display: flex; flex-direction: column; gap: 1rem; }
.nav-mobile a {
  font-size: 0.95rem;
  color: var(--text-dim);
  transition: color 0.2s;
}
.nav-mobile a:hover { color: var(--text); }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 7rem 0 4rem;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black 30%, transparent 100%);
  opacity: 0.6;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(79,142,247,0.18) 0%, transparent 70%);
  top: -100px; right: -100px;
  animation: orbFloat 8s ease-in-out infinite;
}
.hero-orb-2 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(167,139,250,0.12) 0%, transparent 70%);
  bottom: 50px; left: 10%;
  animation: orbFloat 10s ease-in-out infinite reverse;
}
@keyframes orbFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-30px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--green);
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.2);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  letter-spacing: 0.08em;
  margin-bottom: 1.8rem;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 400;
  line-height: 1.08;
  margin-bottom: 1.2rem;
  color: var(--text);
}
.hero-name em {
  font-style: italic;
  color: var(--accent-light);
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  height: 1.6em;
  letter-spacing: 0.04em;
}

.cursor-blink {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 2.2rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 400;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(1); opacity: 0.6; }
  50% { transform: scaleY(0.6); opacity: 1; }
}

/* ─── ABOUT ─── */
.about { background: var(--bg-2); }

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 5rem;
  align-items: center;
  margin-top: 1rem;
}

.about-text p {
  color: var(--text-dim);
  margin-bottom: 1.25rem;
  font-size: 0.97rem;
  line-height: 1.8;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.75rem;
}

.about-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(79, 142, 247, 0.2);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.avatar-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 380px;
}

.avatar-placeholder {
  position: relative;
  width: 200px;
  height: 200px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-initials {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--accent);
  font-style: italic;
}

.avatar-ring {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid var(--accent-dim);
  animation: ringPulse 3s ease-in-out infinite;
}
@keyframes ringPulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.05); opacity: 1; }
}

.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.1rem;
  backdrop-filter: blur(8px);
  white-space: nowrap;
}
.floating-card i {
  color: var(--accent);
  font-size: 1.1rem;
}
.floating-card strong {
  display: block;
  font-size: 0.82rem;
  color: var(--text);
  font-weight: 600;
}
.floating-card small {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.card-top {
  top: 20px;
  right: -20px;
  animation: floatUp 4s ease-in-out infinite;
}
.card-bottom {
  bottom: 20px;
  left: -20px;
  animation: floatDown 4s ease-in-out infinite;
}
@keyframes floatUp {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes floatDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

/* ─── STACK ─── */
.stack { background: var(--bg); }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

.stack-group {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.3s, transform 0.2s;
  position: relative;
  overflow: hidden;
}
.stack-group::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
}

/* Colored top bars per group */
.stack-group--python::before { background: linear-gradient(90deg, #3776ab, #ffd43b); }
.stack-group--bi::before { background: linear-gradient(90deg, #f2c811, #e66c37); }
.stack-group--etl::before { background: linear-gradient(90deg, #34d399, #2dd4bf); }
.stack-group--tools::before { background: linear-gradient(90deg, #a78bfa, #f472b6); }

.stack-group--python { border-top-color: rgba(55, 118, 171, 0.4); }
.stack-group--bi { border-top-color: rgba(242, 200, 17, 0.3); }
.stack-group--etl { border-top-color: rgba(52, 211, 153, 0.3); }
.stack-group--tools { border-top-color: rgba(167, 139, 250, 0.3); }

.stack-group:hover { transform: translateY(-3px); }

.stack-group-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.stack-group-label i { font-size: 0.85rem; }

.stack-group--python .stack-group-label { color: #3776ab; }
.stack-group--bi .stack-group-label { color: #f2c811; }
.stack-group--etl .stack-group-label { color: var(--teal); }
.stack-group--tools .stack-group-label { color: var(--purple); }

.stack-items {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.stack-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.55rem 0.8rem;
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--text-dim);
  transition: background 0.2s, color 0.2s;
  cursor: default;
}

.stack-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--text);
}

.stack-group--python .stack-item:hover { color: #7aaeff; }
.stack-group--bi .stack-item:hover { color: #f2c811; }
.stack-group--etl .stack-item:hover { color: var(--teal); }
.stack-group--tools .stack-item:hover { color: var(--purple); }

.stack-item i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.stack-group--python .stack-item i { color: #3776ab; }
.stack-group--bi .stack-item i { color: #f2c811; }
.stack-group--etl .stack-item i { color: var(--teal); }
.stack-group--tools .stack-item i { color: var(--purple); }

.tech-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  border-radius: 4px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  flex-shrink: 0;
  color: var(--text-muted);
}

.badge-learning {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--yellow);
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.25);
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  margin-left: 0.4rem;
  letter-spacing: 0.04em;
  vertical-align: middle;
}

/* ─── PROJECTS ─── */
.projects { background: var(--bg-2); }

.projects-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.04em;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.project-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s, transform 0.2s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}
.project-card.hidden {
  display: none;
}

.project-img {
  position: relative;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Colorful project image backgrounds */
.project-img--blue {
  background: linear-gradient(135deg, rgba(79,142,247,0.25) 0%, rgba(79,142,247,0.05) 100%);
  border-bottom: 1px solid rgba(79,142,247,0.2);
}
.project-img--teal {
  background: linear-gradient(135deg, rgba(45,212,191,0.25) 0%, rgba(45,212,191,0.05) 100%);
  border-bottom: 1px solid rgba(45,212,191,0.2);
}
.project-img--purple {
  background: linear-gradient(135deg, rgba(167,139,250,0.25) 0%, rgba(167,139,250,0.05) 100%);
  border-bottom: 1px solid rgba(167,139,250,0.2);
}
.project-img--orange {
  background: linear-gradient(135deg, rgba(251,146,60,0.25) 0%, rgba(251,146,60,0.05) 100%);
  border-bottom: 1px solid rgba(251,146,60,0.2);
}
.project-img--green {
  background: linear-gradient(135deg, rgba(52,211,153,0.25) 0%, rgba(52,211,153,0.05) 100%);
  border-bottom: 1px solid rgba(52,211,153,0.2);
}
.project-img--red {
  background: linear-gradient(135deg, rgba(248,113,113,0.25) 0%, rgba(248,113,113,0.05) 100%);
  border-bottom: 1px solid rgba(248,113,113,0.2);
}

/* Default (no color class) */
.project-img:not([class*="project-img--"]) {
  background: linear-gradient(135deg, rgba(79,142,247,0.12) 0%, rgba(167,139,250,0.08) 100%);
  border-bottom: 1px solid var(--border);
}

.project-img-placeholder {
  font-size: 2.5rem;
}
.project-img--blue .project-img-placeholder { color: var(--accent); }
.project-img--teal .project-img-placeholder { color: var(--teal); }
.project-img--purple .project-img-placeholder { color: var(--purple); }
.project-img--orange .project-img-placeholder { color: var(--orange); }
.project-img--green .project-img-placeholder { color: var(--green); }
.project-img--red .project-img-placeholder { color: var(--red); }
.project-img:not([class*="project-img--"]) .project-img-placeholder { color: var(--accent); }

.project-tag {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(13, 16, 23, 0.75);
  border: 1px solid var(--border);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
  backdrop-filter: blur(4px);
}

.project-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex: 1;
}

.project-body h3 {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}

.project-problem, .project-result {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.project-problem strong { color: var(--orange); }
.project-result strong { color: var(--green); }

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.25rem;
}
.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.18rem 0.5rem;
  border-radius: 3px;
}

.project-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.btn-project-demo,
.btn-project-gh {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: 4px;
  transition: var(--transition);
  letter-spacing: 0.02em;
}
.btn-project-demo {
  background: var(--accent);
  color: #fff;
  flex: 1;
  justify-content: center;
}
.btn-project-demo:hover { background: var(--accent-light); }
.btn-project-gh {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-project-gh:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── EXPERIENCE ─── */
.experience { background: var(--bg); }

.timeline {
  position: relative;
  margin-top: 3.5rem;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: 3.5rem;
  padding-left: 2rem;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -0.4rem;
  top: 0.3rem;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.2);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.timeline-content {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.3s;
}
.timeline-content:hover { border-color: var(--border-hover); }

.timeline-header { margin-bottom: 1.25rem; }
.timeline-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.3rem;
}
.timeline-company {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.timeline-achievements {
  list-style: none;
  margin-bottom: 1.25rem;
}
.timeline-achievements li {
  font-size: 0.88rem;
  color: var(--text-dim);
  padding: 0.35rem 0;
  padding-left: 1.1rem;
  position: relative;
  line-height: 1.6;
}
.timeline-achievements li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
  top: 0.45rem;
}

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.timeline-tech span {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(79, 142, 247, 0.2);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
}

/* ─── EDUCATION ─── */
.education { background: var(--bg-2); }

.edu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}

.edu-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  transition: border-color 0.3s, transform 0.2s;
  position: relative;
  overflow: hidden;
}
.edu-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.edu-card:hover {
  transform: translateY(-2px);
}

/* Colorful edu cards */
.edu-card--blue::before { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
.edu-card--blue { border-top-color: rgba(79,142,247,0.3); }
.edu-card--blue:hover { border-color: rgba(79,142,247,0.35); }
.edu-card--blue .edu-icon { background: rgba(79,142,247,0.12); color: var(--accent); }
.edu-card--blue .edu-date { color: var(--accent); }

.edu-card--purple::before { background: linear-gradient(90deg, var(--purple), #c4b5fd); }
.edu-card--purple { border-top-color: rgba(167,139,250,0.3); }
.edu-card--purple:hover { border-color: rgba(167,139,250,0.35); }
.edu-card--purple .edu-icon { background: rgba(167,139,250,0.12); color: var(--purple); }
.edu-card--purple .edu-date { color: var(--purple); }

.edu-card--orange::before { background: linear-gradient(90deg, var(--orange), #fdba74); }
.edu-card--orange { border-top-color: rgba(251,146,60,0.3); }
.edu-card--orange:hover { border-color: rgba(251,146,60,0.35); }
.edu-card--orange .edu-icon { background: rgba(251,146,60,0.12); color: var(--orange); }
.edu-card--orange .edu-date { color: var(--orange); }

.edu-card--green::before { background: linear-gradient(90deg, var(--green), #6ee7b7); }
.edu-card--green { border-top-color: rgba(52,211,153,0.3); }
.edu-card--green:hover { border-color: rgba(52,211,153,0.35); }
.edu-card--green .edu-icon { background: rgba(52,211,153,0.12); color: var(--green); }
.edu-card--green .edu-date { color: var(--green); }

.edu-card--teal::before { background: linear-gradient(90deg, var(--teal), #5eead4); }
.edu-card--teal { border-top-color: rgba(45,212,191,0.3); }
.edu-card--teal:hover { border-color: rgba(45,212,191,0.35); }
.edu-card--teal .edu-icon { background: rgba(45,212,191,0.12); color: var(--teal); }
.edu-card--teal .edu-date { color: var(--teal); }

.edu-card--red::before { background: linear-gradient(90deg, var(--red), #fca5a5); }
.edu-card--red { border-top-color: rgba(248,113,113,0.3); }
.edu-card--red:hover { border-color: rgba(248,113,113,0.35); }
.edu-card--red .edu-icon { background: rgba(248,113,113,0.12); color: var(--red); }
.edu-card--red .edu-date { color: var(--red); }

.edu-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.edu-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 0.4rem;
}
.edu-body h3 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.2rem;
  line-height: 1.3;
}
.edu-place {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}
.edu-body p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ─── CONTACT ─── */
.contact { background: var(--bg); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: start;
  margin-top: 1.5rem;
}

.contact-left p {
  color: var(--text-dim);
  margin-bottom: 2rem;
  max-width: 380px;
  line-height: 1.75;
}

.contact-links { display: flex; flex-direction: column; gap: 0.85rem; }

.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.1rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.3s, transform 0.2s, box-shadow 0.3s;
}
.contact-link:hover {
  transform: translateX(4px);
}
.contact-link i {
  width: 36px; height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.contact-link strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text);
  font-weight: 600;
}
.contact-link small {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Colored contact links */
.contact-link--linkedin i { background: rgba(10,102,194,0.15); color: #0a66c2; }
.contact-link--linkedin:hover { border-color: #0a66c2; box-shadow: 0 4px 20px rgba(10,102,194,0.15); }

.contact-link--github i { background: rgba(255,255,255,0.06); color: #e8eaf0; }
.contact-link--github:hover { border-color: rgba(255,255,255,0.3); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }

.contact-link--email i { background: rgba(248,113,113,0.12); color: var(--red); }
.contact-link--email:hover { border-color: var(--red); box-shadow: 0 4px 20px rgba(248,113,113,0.15); }

.contact-link--youtube i { background: rgba(255,0,0,0.1); color: #ff0000; }
.contact-link--youtube:hover { border-color: #ff4444; box-shadow: 0 4px 20px rgba(255,0,0,0.15); }

/* FORM */
.contact-form-wrapper {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.03em;
}
.form-group input,
.form-group textarea {
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: var(--bg);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.form-note {
  font-size: 0.78rem;
  color: var(--green);
  text-align: center;
  min-height: 1.2rem;
  font-family: var(--font-mono);
}

/* ─── FOOTER ─── */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}
.footer-logo .dot { color: var(--accent); }
.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-copy i { color: #ef4444; font-size: 0.7rem; }
.footer-socials { display: flex; gap: 0.6rem; }
.footer-socials a {
  width: 34px; height: 34px;
  border-radius: 5px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-socials a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { display: none; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .edu-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
  .section-pad { padding: 80px 0; }
  .nav-links, .btn-nav { display: none; }
  .nav-toggle { display: flex; }
  .stack-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.5rem; }
  .stat-divider { display: none; }
  .projects-header { flex-direction: column; align-items: flex-start; }
  .timeline { padding-left: 1rem; }
  .timeline-item { padding-left: 1.25rem; }
  .footer-inner { flex-direction: column; text-align: center; }
  .hero-scroll { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}