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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 15.5px;
  line-height: 1.65;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* ── Layout ───────────────────────────────── */
.container {
  width: var(--container);
  margin: 0 auto;
}

/* ── Navbar ───────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  border-bottom: 1px solid transparent;
  transition: background 200ms, border-color 200ms;
}

.navbar.scrolled {
  background: rgba(10, 13, 20, 0.88);
  border-color: var(--border);
  backdrop-filter: blur(16px);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1rem;
}

.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--blue);
  color: #050810;
  font-weight: 900;
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  margin-right: 20px;
}

.nav-links a {
  padding: 7px 13px;
  border-radius: var(--radius);
  color: var(--soft);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 150ms, background 150ms;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
}

.nav-toggle span {
  display: block;
  width: 17px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 220ms, opacity 220ms;
}

.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child  { transform: translateY(-6.5px) rotate(-45deg); }

/* Nav Socials */
.nav-socials {
  display: flex;
  align-items: center;
  gap: 10px;
  border-left: 1px solid var(--border);
  padding-left: 20px;
}

.nav-social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  color: var(--soft);
  border: 1px solid var(--border);
  transition: all 200ms ease;
  position: relative;
  overflow: hidden;
}

.nav-social-btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at center, rgba(255,255,255,0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 200ms ease;
}

.nav-social-btn:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.nav-social-btn:hover::before {
  opacity: 1;
}

#nav-email:hover { color: var(--blue); border-color: rgba(96,165,250,0.4); box-shadow: 0 4px 12px rgba(96,165,250,0.15); }
#nav-github:hover { color: #fff; border-color: rgba(255,255,255,0.3); }
#nav-linkedin:hover { color: var(--blue); border-color: rgba(96,165,250,0.4); box-shadow: 0 4px 12px rgba(96,165,250,0.15); }

/* ── Hero ─────────────────────────────────── */
.hero {
  padding: 140px 0 100px;
  border-bottom: 1px solid var(--border);
  position: relative;
  background-image: linear-gradient(to bottom, rgba(10, 13, 20, 0.75), var(--bg)), url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8vw;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border: 1px solid var(--green-bd);
  border-radius: 999px;
  background: var(--green-bg);
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.hero-sub {
  color: var(--soft);
  font-size: 1.05rem;
  max-width: 560px;
  margin-bottom: 22px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ── Theme Toggle ── */
.theme-toggle {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin-left: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 200ms ease;
}
.theme-toggle:hover {
  background: rgba(255,255,255,0.1);
  transform: scale(1.05);
}

/* ── Interactive Terminal ── */
.terminal-window {
  background: #0d1117;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  width: 100%;
  min-width: 320px;
  max-width: 500px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.5);
  overflow: hidden;
  font-family: 'Courier New', Courier, monospace;
}

.tw-header {
  background: #161b22;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.tw-dots {
  display: flex;
  gap: 6px;
  margin-right: 16px;
}

.tw-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.tw-dot.red { background: #ff5f56; }
.tw-dot.yellow { background: #ffbd2e; }
.tw-dot.green { background: #27c93f; }

.tw-title {
  color: #8b949e;
  font-size: 0.8rem;
  font-weight: 600;
}

.tw-body {
  padding: 20px;
  color: #e6edf3;
  font-size: 0.85rem;
  line-height: 1.5;
  min-height: 200px;
  white-space: pre-wrap;
}

.tw-cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: #27c93f;
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}

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

/* ── Hacker Mode (Matrix Theme) ── */
body.hacker-mode {
  --bg: #050505;
  --bg-2: #0a0a0a;
  --surface: #0a0a0a;
  --surface-2: #111;
  --text: #00ff00;
  --soft: #00cc00;
  --muted: #008800;
  --blue: #00ff00;
  --blue-bg: rgba(0,255,0,0.1);
  --blue-bd: #00ff00;
  --border: rgba(0,255,0,0.3);
  --border-2: rgba(0,255,0,0.5);
}
body.hacker-mode * {
  font-family: 'Courier New', Courier, monospace !important;
}
body.hacker-mode .blob { display: none; }
body.hacker-mode .cursor-glow {
  background: radial-gradient(circle, rgba(0,255,0,0.15) 0%, transparent 60%);
}

/* ── Buttons ──────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 42px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 160ms, box-shadow 160ms, background 160ms;
  cursor: pointer;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--blue);
  color: #050810;
  box-shadow: 0 4px 16px rgba(96,165,250,0.3);
}

.btn-primary:hover { box-shadow: 0 6px 22px rgba(96,165,250,0.45); }

.btn-outline {
  border-color: var(--border-2);
  color: var(--soft);
  background: rgba(255,255,255,0.04);
}

.btn-outline:hover {
  color: var(--text);
  background: rgba(255,255,255,0.07);
}

/* ── Section commons ──────────────────────── */
.section { padding: 88px 0; }

.section + .section { border-top: 1px solid var(--border); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-label::before {
  content: '';
  width: 20px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 8px;
}

.section-desc {
  color: var(--soft);
  font-size: 0.95rem;
  max-width: 650px;
  margin-top: 10px;
  line-height: 1.6;
}

/* ══════════════════════════════════════════
   SKILLS SECTION — redesigned
   ══════════════════════════════════════════ */
.skills-header { margin-bottom: 48px; }

/* ── Phase selector cards ─────────────────── */
.phase-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 32px;
}

.phase-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: 22px 22px 20px;
  border-radius: var(--radius-xl);
  border: 2px solid rgba(255, 255, 255, 0.08); /* Improved border visibility */
  background: linear-gradient(180deg, var(--surface) 0%, rgba(20,20,25,0.8) 100%);
  cursor: pointer;
  text-align: left;
  transition:
    border-color 220ms ease,
    transform 220ms ease,
    box-shadow 220ms ease,
    background 220ms ease;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  background-clip: padding-box;
}

/* shimmer line at top — hidden by default */
.phase-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  opacity: 0;
  transition: opacity 220ms ease;
}

.phase-card:hover {
  transform: translateY(-4px);
  background: var(--surface-2);
  border-color: rgba(255, 255, 255, 0.2); /* Enhanced hover border */
  box-shadow: 0 12px 24px rgba(0,0,0,0.3);
}

/* click ripple */
.phase-card:active { transform: translateY(1px) scale(0.98); box-shadow: 0 2px 8px rgba(0,0,0,0.2); }

/* ── Icon row ─── */
.pc-icon-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.pc-emoji {
  font-size: 1.8rem;
  line-height: 1;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
  transition: transform 200ms ease;
}

.phase-card:hover .pc-emoji {
  transform: scale(1.1) rotate(-5deg);
}

.pc-arrow {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text);
  background: rgba(255,255,255,0.1);
  padding: 4px 10px;
  border-radius: 999px;
  opacity: 0.6;
  transform: translateX(0);
  transition: opacity 200ms, background 200ms;
  animation: pulse-arrow 2s infinite ease-in-out;
}

@keyframes pulse-arrow {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

.phase-card:hover .pc-arrow {
  opacity: 1;
  background: rgba(255,255,255,0.2);
  color: #fff;
}

/* ── Text ─── */
.pc-title {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.2;
}

.pc-desc {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.5;
}

.pc-count {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* ── Colour variants ─── */

/* Known — green */
.phase-card[data-phase="known"] { color: var(--text); }
.phase-card[data-phase="known"]::before { background: var(--green); }
.phase-card[data-phase="known"]:hover   { border-color: var(--green-bd); box-shadow: 0 8px 28px rgba(74,222,128,0.1); }
.phase-card[data-phase="known"] .pc-count { color: var(--green); border-color: var(--green-bd); background: var(--green-bg); }

/* Learning — yellow */
.phase-card[data-phase="learning"] { color: var(--text); }
.phase-card[data-phase="learning"]::before { background: var(--yellow); }
.phase-card[data-phase="learning"]:hover   { border-color: var(--yellow-bd); box-shadow: 0 8px 28px rgba(250,204,21,0.09); }
.phase-card[data-phase="learning"] .pc-count { color: var(--yellow); border-color: var(--yellow-bd); background: var(--yellow-bg); }

/* Future — red */
.phase-card[data-phase="future"] { color: var(--text); }
.phase-card[data-phase="future"]::before { background: var(--red); }
.phase-card[data-phase="future"]:hover   { border-color: var(--red-bd); box-shadow: 0 8px 28px hwb(228 0% 0% / 0.09); }
.phase-card[data-phase="future"] .pc-count { color: var(--red); border-color: var(--red-bd); background: var(--red-bg); }

/* ── ACTIVE state ─── */
.phase-card.active {
  transform: translateY(-4px);
}

.phase-card.active::before { opacity: 1; }

.phase-card[data-phase="known"].active {
  border-color: var(--green);
  background: linear-gradient(180deg, rgba(74,222,128,0.18) 0%, rgba(20,20,25,0.9) 100%);
  box-shadow: 0 0 0 2px var(--green), 0 12px 40px rgba(74,222,128,0.25);
}

.phase-card[data-phase="learning"].active {
  border-color: var(--yellow);
  background: linear-gradient(180deg, rgba(250,204,21,0.18) 0%, rgba(20,20,25,0.9) 100%);
  box-shadow: 0 0 0 2px var(--yellow), 0 12px 40px rgba(250,204,21,0.25);
}

.phase-card[data-phase="future"].active {
  border-color: var(--red);
  background: linear-gradient(180deg, rgba(248,113,113,0.18) 0%, rgba(20,20,25,0.9) 100%);
  box-shadow: 0 0 0 2px var(--red), 0 12px 40px rgba(248,113,113,0.25);
}

.phase-card.active .pc-arrow { 
  opacity: 1; 
  background: rgba(255,255,255,0.2);
  color: #fff;
}

/* ── Panel transition ─────────────────────── */
.phase-panel {
  display: none;
}

.phase-panel.active { 
  display: block; 
  animation: fade-in 400ms ease forwards;
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Panel header bar ─────────────────────── */
.phase-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
  margin-top: 32px;
  font-weight: 700;
  font-size: 0.95rem;
  background: linear-gradient(145deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  position: relative;
  overflow: hidden;
}

.phase-heading::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 4px;
}

.phase-heading.green::before { background: var(--green); box-shadow: 0 0 12px var(--green); }
.phase-heading.yellow::before { background: var(--yellow); box-shadow: 0 0 12px var(--yellow); }
.phase-heading.red::before { background: var(--red); box-shadow: 0 0 12px var(--red); }

.phase-heading-icon { 
  font-size: 1.1rem;
  filter: drop-shadow(0 0 8px rgba(255,255,255,0.2));
}

.phase-count { 
  margin-left: auto; 
  font-size: 0.8rem; 
  color: var(--soft);
  background: rgba(255,255,255,0.05);
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
}

/* ── Categories grid ──────────────────────── */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.category-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, var(--surface) 0%, var(--surface-2) 100%);
  position: relative;
  overflow: hidden;
  background-clip: padding-box;
  opacity: 0;
  transform: translateY(20px);
  transition: transform 300ms ease, border-color 300ms ease, box-shadow 300ms ease;
}

/* Staggered animation classes applied by JS */
.category-card.animate-in {
  animation: slide-up-fade 500ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slide-up-fade {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.category-card:hover { 
  border-color: rgba(255,255,255,0.2); 
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.category-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 100px; height: 100px;
  background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30%, -30%);
}

.cat-name {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cat-name::before {
  content: '';
  width: 12px; height: 2px;
  background: var(--soft);
  border-radius: 2px;
}

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

.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--soft);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  transition: all 200ms ease;
  backdrop-filter: blur(4px);
}

.tag:hover {
  color: var(--text);
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}

/* Subtle glow variants on hover based on phase */
.phase-panel#panel-known   .tag:hover { border-color: rgba(74,222,128,0.4);  box-shadow: 0 0 12px rgba(74,222,128,0.15);  color: var(--green); }
.phase-panel#panel-learning .tag:hover { border-color: rgba(250,204,21,0.4); box-shadow: 0 0 12px rgba(250,204,21,0.15); color: var(--yellow); }
.phase-panel#panel-future   .tag:hover { border-color: rgba(248,113,113,0.4); box-shadow: 0 0 12px rgba(248,113,113,0.15); color: var(--red); }

/* Phase-specific accent bar on category cards */
.phase-panel#panel-known   .cat-name::before { background: var(--green); }
.phase-panel#panel-learning .cat-name::before { background: var(--yellow); }
.phase-panel#panel-future   .cat-name::before { background: var(--red); }

/* Phase-specific left border on hover for category cards */
.phase-panel#panel-known   .category-card:hover { border-color: rgba(74,222,128,0.3); box-shadow: 0 12px 40px rgba(74,222,128,0.06); }
.phase-panel#panel-learning .category-card:hover { border-color: rgba(250,204,21,0.3); box-shadow: 0 12px 40px rgba(250,204,21,0.06); }
.phase-panel#panel-future   .category-card:hover { border-color: rgba(248,113,113,0.3); box-shadow: 0 12px 40px rgba(248,113,113,0.06); }

/* responsive phase selector */
@media (max-width: 640px) {
  .phase-selector {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .phase-card {
    flex-direction: row;
    align-items: center;
    gap: 16px;
    padding: 16px 18px;
  }

  .pc-icon-row { width: auto; }
  .pc-arrow { opacity: 1; transform: none; }
  .pc-desc { display: none; }
}


/* ── API Playground ───────────────────────── */
.playground-ui {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 36px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.pg-header {
  display: flex;
  align-items: center;
  background: var(--surface-2);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}

.pg-method {
  font-weight: 800;
  color: var(--blue);
  background: var(--blue-bg);
  padding: 4px 10px;
  border-radius: var(--radius);
  font-size: 0.85rem;
}

.pg-url {
  flex: 1;
  font-family: monospace;
  font-size: 0.95rem;
  color: var(--text);
  background: rgba(0,0,0,0.3);
  padding: 8px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border-2);
}

.pg-send {
  height: 38px;
  padding: 0 16px;
}

.pg-body {
  padding: 0;
  position: relative;
}

.pg-status {
  display: flex;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  font-family: monospace;
}

.pg-status.success .status-code {
  color: var(--green);
  font-weight: bold;
}

.pg-response {
  margin: 0;
  padding: 16px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  color: var(--soft);
  background: #0d1117;
  overflow-x: auto;
  min-height: 180px;
}
.pg-response .key { color: #79c0ff; }
.pg-response .string { color: #a5d6ff; }
.pg-response .number { color: #79c0ff; }
.pg-response .boolean { color: #ff7b72; }

/* ── Architecture Diagram ───────────────── */
.arch-diagram {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-top: 36px;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  overflow: hidden;
  position: relative;
}

@media(min-width: 768px) {
  .arch-diagram {
    flex-direction: row;
    justify-content: space-between;
    padding: 60px 40px;
    height: 300px;
  }
}

.arch-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  padding: 16px;
  border-radius: var(--radius-lg);
  width: 120px;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.node-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.node-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
}

/* On Desktop: position nodes explicitly for a split path */
@media(min-width: 768px) {
  .arch-node { position: absolute; }
  .node-client { top: 50%; left: 8%; transform: translateY(-50%); }
  .node-lb { top: 50%; left: 30%; transform: translateY(-50%); }
  .node-api { top: 50%; left: 55%; transform: translateY(-50%); }
  .node-db { top: 15%; right: 8%; }
  .node-cache { bottom: 15%; right: 8%; }
}

.arch-line {
  display: none;
  position: absolute;
  background: rgba(255,255,255,0.1);
  z-index: 1;
}

@media(min-width: 768px) {
  .arch-line { display: block; }
  /* Client to LB */
  .line-1 { top: 50%; left: 16%; width: 14%; height: 2px; transform: translateY(-50%); }
  /* LB to API */
  .line-2 { top: 50%; left: 38%; width: 17%; height: 2px; transform: translateY(-50%); }
  /* API to DB (angled up) */
  .line-3 { top: 38%; left: 63%; width: 23%; height: 2px; transform: rotate(-25deg); transform-origin: left center; }
  /* API to Cache (angled down) */
  .line-4 { top: 62%; left: 63%; width: 23%; height: 2px; transform: rotate(25deg); transform-origin: left center; }
}

/* Packets */
.packet {
  width: 8px;
  height: 8px;
  background: var(--blue);
  border-radius: 50%;
  position: absolute;
  top: -3px; left: 0;
  box-shadow: 0 0 10px var(--blue);
  animation: packet-move 2s infinite linear;
}

.line-1 .packet { animation-delay: 0s; }
.line-2 .packet { animation-delay: 0.8s; }
.line-3 .packet { animation-delay: 1.6s; background: var(--green); box-shadow: 0 0 10px var(--green); }
.line-4 .packet { animation-delay: 1.6s; background: var(--yellow); box-shadow: 0 0 10px var(--yellow); }

@keyframes packet-move {
  0% { left: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

/* ── System Design Cards ─────────────────── */
.sysdesign-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.sd-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.sd-card:hover {
  border-color: var(--border-2);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.25);
}

.sd-card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.sd-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
}

.sd-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.sd-example {
  font-size: 0.78rem;
  color: var(--blue);
  font-weight: 600;
  margin-top: 3px;
}

.sd-desc {
  font-size: 0.87rem;
  color: var(--soft);
  line-height: 1.65;
}

.sd-desc code {
  background: rgba(96,165,250,0.12);
  color: var(--blue);
  padding: 1px 5px;
  border-radius: 4px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82rem;
}

.sd-flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px;
  background: rgba(0,0,0,0.25);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-top: 4px;
}

.sd-node {
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  padding: 4px 10px;
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 700;
  font-family: 'Courier New', Courier, monospace;
  color: var(--text);
  white-space: nowrap;
}

.sd-node-db {
  border-color: rgba(74,222,128,0.4);
  color: var(--green);
  background: rgba(74,222,128,0.06);
}

.sd-node-cache {
  border-color: rgba(250,204,21,0.4);
  color: var(--yellow);
  background: rgba(250,204,21,0.06);
}

.sd-arrow {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
}

.sd-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

/* ── System Design v2 (Tree Diagrams) ───── */
.sd2-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.sd2-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
  overflow: hidden;
}

.sd2-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--green));
  border-radius: 3px 3px 0 0;
  opacity: 0;
  transition: opacity 220ms ease;
}

.sd2-card:hover {
  border-color: rgba(96,165,250,0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.3);
}
.sd2-card:hover::before { opacity: 1; }

.sd2-ready-badge {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.3);
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sd2-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sd2-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
}

.sd2-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
}

.sd2-subtitle {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 3px;
  font-family: 'Courier New', Courier, monospace;
}

/* Tree Diagram (Hidden in cards, shown in modal) */
.sd2-diagram {
  display: none;
}

/* ── Diagram Modal (Premium Redesign) ─────── */
.sd-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms cubic-bezier(0.4, 0, 0.2, 1);
  padding: 20px;
}
.sd-modal.show {
  opacity: 1;
  pointer-events: auto;
}

.sd-modal-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(4, 9, 20, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.sd-modal-content {
  position: relative;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #111827 0%, #0f172a 100%);
  border: 1px solid rgba(96, 165, 250, 0.2);
  border-radius: 20px;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.05),
              0 30px 60px rgba(0,0,0,0.6),
              0 0 40px rgba(96, 165, 250, 0.15);
  transform: translateY(20px) scale(0.98);
  transition: transform 400ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
}

.sd-modal.show .sd-modal-content {
  transform: translateY(0) scale(1);
}

/* Modal Header */
.sd-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

#sd-modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sd-modal-close {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--muted);
  width: 36px; height: 36px;
  border-radius: 50%;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 200ms ease;
  line-height: 1;
}
.sd-modal-close:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
  transform: rotate(90deg);
}

/* Modal Body */
#sd-modal-body {
  padding: 40px 32px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.2) transparent;
}
#sd-modal-body::-webkit-scrollbar { width: 6px; }
#sd-modal-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 10px; }

#sd-modal-body .sd2-diagram {
  display: block;
  background: transparent;
  border: none;
  padding: 0;
}


/* ── Flow Diagrams ───────────────────────── */
.flow-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: 'Courier New', Courier, monospace;
}
.flow-row {
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
}
.flow-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.flow-node {
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 700;
  text-align: center;
  background: var(--surface-2);
  border: 1.5px solid var(--border-2);
  color: var(--text);
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  white-space: nowrap;
}
.flow-arrow-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin: -4px 0;
}
.flow-arrow-text {
  font-size: 0.72rem;
  color: var(--blue);
  background: rgba(96,165,250,0.1);
  border: 1px solid rgba(96,165,250,0.25);
  padding: 3px 8px;
  border-radius: 999px;
  font-family: 'Courier New', Courier, monospace;
  font-weight: 700;
  text-align: center;
}
.flow-arrow {
  color: var(--muted);
  font-size: 1.4rem;
  line-height: 1;
  opacity: 0.7;
}

/* Modal scaling for flowcharts */
#sd-modal-body .flow-node {
  font-size: 1.1rem;
  padding: 14px 24px;
}
#sd-modal-body .flow-arrow {
  font-size: 1.8rem;
}
@media (max-width: 640px) {
  .flow-row { flex-direction: column; gap: 12px; align-items: center; }
  .flow-col .flow-arrow { transform: rotate(45deg); /* tweak if stacked */ }
}

/* color variants */
.node-api  { border: 1px solid rgba(96,165,250,0.5);  color: var(--blue);   background: rgba(96,165,250,0.08);  }
.node-db   { border: 1px solid rgba(74,222,128,0.5);  color: var(--green);  background: rgba(74,222,128,0.08);  }
.node-cache{ border: 1px solid rgba(250,204,21,0.5);  color: var(--yellow); background: rgba(250,204,21,0.08);  }
.node-mid  { border: 1px solid var(--border-2);       color: var(--soft);   background: var(--surface-2);       }



/* CTA Banner */
.sd2-cta {
  margin-top: 48px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 36px;
  background: linear-gradient(135deg, rgba(96,165,250,0.08) 0%, rgba(74,222,128,0.06) 100%);
  border: 1px solid rgba(96,165,250,0.25);
  border-radius: var(--radius-xl);
  flex-wrap: wrap;
}

.sd2-cta-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.sd2-cta-text {
  font-size: 1rem;
  color: var(--soft);
  line-height: 1.6;
  flex: 1;
  min-width: 200px;
}

/* ── Journey ──────────────────────────────── */
.timeline {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.tl-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  padding-bottom: 32px;
  position: relative;
}

.tl-item:last-child { padding-bottom: 0; }

.tl-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.tl-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--bg);
  flex-shrink: 0;
  z-index: 1;
}

.tl-dot.completed { background: var(--green); box-shadow: 0 0 8px rgba(74,222,128,0.4); }
.tl-dot.current   { background: var(--yellow); box-shadow: 0 0 8px rgba(250,204,21,0.5); animation: pulse-dot 2s infinite; }
.tl-dot.future    { background: var(--blue); box-shadow: 0 0 8px rgba(96,165,250,0.4); }

.tl-line {
  width: 2px;
  flex: 1;
  margin-top: 4px;
  background: var(--border-2);
  min-height: 32px;
}

.tl-item:last-child .tl-line { display: none; }

.tl-period {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  padding-top: 1px;
}

.tl-content h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.tl-content p {
  font-size: 0.86rem;
  color: var(--soft);
  line-height: 1.6;
}

.tl-points {
  margin-top: 14px;
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tl-points li {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--soft);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 5px 12px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.tl-points li:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

/* ── Contact ──────────────────────────────── */
.section-contact {
  position: relative;
  overflow: hidden;
}

.section-contact::before {
  content: '';
  position: absolute;
  top: -50%; left: 50%;
  width: 1000px; height: 1000px;
  background: radial-gradient(circle, rgba(96,165,250,0.03) 0%, transparent 60%);
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
}

.social-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 48px;
  position: relative;
  z-index: 1;
}

.social-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  background: linear-gradient(160deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0.005) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform 300ms ease, border-color 300ms ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.sc-glow {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  opacity: 0;
  transition: opacity 300ms ease;
}

.sc-glow-blue { background: linear-gradient(90deg, transparent, var(--blue), transparent); box-shadow: 0 0 16px var(--blue); }
.sc-glow-white { background: linear-gradient(90deg, transparent, #fff, transparent); box-shadow: 0 0 16px #fff; }

.social-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-2);
}

.social-card:hover .sc-glow {
  opacity: 1;
}

#card-email:hover { border-color: rgba(96,165,250,0.3); box-shadow: 0 16px 40px rgba(96,165,250,0.1); }
#card-github:hover { border-color: rgba(255,255,255,0.2); box-shadow: 0 16px 40px rgba(255,255,255,0.05); }
#card-linkedin:hover { border-color: rgba(96,165,250,0.3); box-shadow: 0 16px 40px rgba(96,165,250,0.1); }

.sc-icon-wrap {
  width: 56px; height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  transition: transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.social-card:hover .sc-icon-wrap {
  transform: scale(1.1) rotate(-5deg);
}

.sc-icon-blue { color: var(--blue); background: rgba(96,165,250,0.05); border-color: rgba(96,165,250,0.2); }
.sc-icon-white { color: var(--text); background: rgba(255,255,255,0.03); }
.sc-icon-linkedin { color: var(--blue); background: rgba(96,165,250,0.05); border-color: rgba(96,165,250,0.2); }

.sc-body {
  display: flex;
  flex-direction: column;
}

.sc-platform {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.sc-handle {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.sc-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--soft);
  transition: color 200ms ease;
  margin-top: auto;
}

.sc-arrow {
  font-size: 1.1rem;
  transition: transform 300ms ease;
}

.social-card:hover .sc-cta {
  color: var(--text);
}

.social-card:hover .sc-arrow {
  transform: translateX(4px);
}

/* ── Footer ───────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

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

.footer-nav {
  display: flex;
  gap: 18px;
}

.footer-nav a {
  font-size: 0.8rem;
  color: var(--muted);
  transition: color 150ms;
}

.footer-nav a:hover { color: var(--soft); }

/* ── Reveal ───────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal-d1 { transition-delay: 60ms; }
.reveal-d2 { transition-delay: 120ms; }
.reveal-d3 { transition-delay: 180ms; }

/* ── Skeleton ─────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.05) 25%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.05) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.3s ease-in-out infinite;
  border-radius: var(--radius);
}

@keyframes shimmer { to { background-position: -200% 0; } }

.skeleton-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, var(--surface) 0%, var(--surface-2) 100%);
  min-height: 140px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sk-line {
  height: 12px;
  border-radius: 6px;
}

.sk-line.skeleton { width: 100%; }
.sk-line.short.skeleton { width: 45%; }

/* ── Interactive Elements ── */

/* Cursor Glow */
.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(96,165,250,0.1) 0%, rgba(74,222,128,0.05) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: -1;
  transition: opacity 300ms ease;
  opacity: 0;
}

/* Waving Hand Emoji */
.wave-emoji {
  display: inline-block;
  cursor: pointer;
  transition: transform 300ms ease;
}

.wave-emoji:hover {
  animation: wave-animation 2.5s infinite;
  transform-origin: 70% 70%;
}

@keyframes wave-animation {
  0% { transform: rotate( 0.0deg) }
  10% { transform: rotate(14.0deg) }  
  20% { transform: rotate(-8.0deg) }
  30% { transform: rotate(14.0deg) }
  40% { transform: rotate(-4.0deg) }
  50% { transform: rotate(10.0deg) }
  60% { transform: rotate( 0.0deg) }  
  100% { transform: rotate( 0.0deg) }
}

/* Hero Blobs */
.hero-blobs {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  overflow: hidden;
  z-index: -2;
  pointer-events: none;
}

.blob {
  position: absolute;
  filter: blur(80px);
  opacity: 0.5;
  border-radius: 50%;
  animation: blob-float 12s infinite ease-in-out alternate;
}

.blob-1 {
  top: -10%; left: -10%;
  width: 40vw; height: 40vw;
  background: rgba(96, 165, 250, 0.15); /* blue glow */
  animation-delay: 0s;
}

.blob-2 {
  bottom: -20%; right: -10%;
  width: 50vw; height: 50vw;
  background: rgba(74, 222, 128, 0.1); /* green glow */
  animation-delay: -5s;
}

@keyframes blob-float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(5%, 10%) scale(1.1); }
}

/* Interactive Tags (About Section) */
.interactive-tag {
  color: var(--text);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
  cursor: default;
}

.interactive-tag:hover {
  transform: translateY(-2px) scale(1.02);
  border-color: rgba(96,165,250,0.4);
  box-shadow: 0 4px 16px rgba(96,165,250,0.15);
}

/* ── Hero accent headline ────────────────── */
.hero-h1-accent {
  display: block;
  font-size: clamp(1.1rem, 2.4vw, 1.65rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--blue);
  margin-top: 6px;
  opacity: 0.9;
}

/* ── Hero stack pills ────────────────────── */
.hero-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--soft);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  transition: color 180ms, border-color 180ms, background 180ms;
}

.hero-pill:hover {
  color: var(--text);
  background: rgba(255,255,255,0.07);
  border-color: var(--border-2);
}

.hero-pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.hero-pill-dot.green { background: var(--green); box-shadow: 0 0 6px var(--green); }
.hero-pill-dot.blue  { background: var(--blue);  box-shadow: 0 0 6px var(--blue);  }
.hero-pill-dot.yellow{ background: var(--yellow);box-shadow: 0 0 6px var(--yellow);}



/* ── About Section 2-col grid ────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 60px;
  align-items: start;
}

/* Trait badges */
.about-traits {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.trait-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--soft);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  transition: all 200ms ease;
}

.trait-badge:hover {
  color: var(--text);
  border-color: rgba(96,165,250,0.3);
  background: rgba(96,165,250,0.06);
  transform: translateY(-1px);
}

.trait-icon {
  font-size: 0.85rem;
  line-height: 1;
}

/* About stat cards */
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.about-stat-card {
  padding: 18px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--surface) 0%, var(--surface-2) 100%);
  transition: border-color 200ms, transform 200ms, box-shadow 200ms;
}

.about-stat-card:hover {
  border-color: var(--border-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}

.asc-icon {
  font-size: 1.3rem;
  margin-bottom: 8px;
  line-height: 1;
}

.asc-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.asc-value {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
}

/* Contact link — soon label */
.cl-soon {
  font-size: 0.7rem;
  color: var(--muted);
  margin-left: 4px;
  font-style: italic;
}

/* ── Responsive ───────────────────────────── */
@media (max-width: 768px) {
  :root { --nav-h: 58px; }

  .nav-toggle { display: flex; }
  .nav-socials { display: none; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 12px; right: 12px;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--border-2);
    border-radius: var(--radius-xl);
    background: rgba(10, 13, 20, 0.97);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
    display: none;
    z-index: 49;
  }

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

  .nav-links a {
    padding: 11px 14px;
    font-size: 0.93rem;
  }

  .hero-inner { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: row; }
  .stat-card  { flex: 1; }

  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }

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

  .tl-item { grid-template-columns: 60px 1fr; gap: 12px; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.9rem; }
  .hero-stats { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; }
}