/* ============================================================
   Portfolio Theme — Dark, modern, developer-aesthetic
   ============================================================ */

/* ── Custom Properties ──────────────────────────────────── */
:root {
  --bg-primary:    #0a0d14;
  --bg-secondary:  #0f1219;
  --bg-card:       #131720;
  --bg-card-hover: #171d2b;

  --accent:        #00d9ff;
  --accent-dim:    rgba(0, 217, 255, 0.15);
  --accent-border: rgba(0, 217, 255, 0.3);

  --purple:        #7c3aed;
  --purple-dim:    rgba(124, 58, 237, 0.15);

  --text-primary:  #e2e8f0;
  --text-secondary:#8892a4;
  --text-muted:    #4a5568;

  --border:        rgba(255,255,255,0.07);
  --border-subtle: rgba(255,255,255,0.04);

  --font-body:     'Inter', system-ui, sans-serif;
  --font-heading:  'Space Grotesk', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  --radius:        10px;
  --radius-lg:     16px;
  --shadow:        0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:     0 8px 48px rgba(0,0,0,0.6);

  --nav-height:    68px;

  --transition:    0.25s ease;
}

/* ── Reset / Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.2;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}
a:hover { color: #fff; }

/* ── Navbar ─────────────────────────────────────────────── */
#mainNav {
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
  transition: background var(--transition);
}

.navbar-brand {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text-primary) !important;
  letter-spacing: -0.5px;
}
.brand-bracket { color: var(--accent); }

.navbar-nav .nav-link {
  color: var(--text-secondary) !important;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem !important;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  position: relative;
}
.navbar-nav .nav-link:hover {
  color: var(--text-primary) !important;
  background: var(--border-subtle);
}

.btn-contact {
  color: var(--accent) !important;
  border: 1px solid var(--accent-border) !important;
}
.btn-contact:hover {
  background: var(--accent-dim) !important;
  color: var(--accent) !important;
}

.navbar-toggler { color: var(--text-secondary); }
.navbar-toggler:focus { box-shadow: none; }

/* ── Sections ───────────────────────────────────────────── */
.section {
  padding: 6rem 0;
  position: relative;
}
.section-alt {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.section-subtitle {
  color: var(--text-secondary);
  margin-top: 0.75rem;
  font-size: 1.05rem;
}

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg-grid {
  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% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  z-index: 0;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
  pointer-events: none;
  animation: pulse 8s ease-in-out infinite;
}
.hero-glow-1 {
  width: 500px; height: 500px;
  background: rgba(0, 217, 255, 0.07);
  top: 20%; left: 10%;
}
.hero-glow-2 {
  width: 400px; height: 400px;
  background: rgba(124, 58, 237, 0.07);
  bottom: 20%; right: 15%;
  animation-delay: 4s;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50%       { transform: scale(1.1); opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-greeting {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
}

.hero-name {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.05;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 60%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  min-height: 2.5rem;
}
.cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-bio {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-social {
  display: flex;
  gap: 1.25rem;
}
.social-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary) !important;
  font-size: 1rem;
  transition: all var(--transition);
}
.social-icon:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
  background: var(--accent-dim);
  transform: translateY(-2px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 1rem;
  animation: bounce 2s ease infinite;
  z-index: 1;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ── Buttons ────────────────────────────────────────────── */
.btn-primary-glow {
  background: var(--accent);
  color: #000 !important;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  border: none;
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
}
.btn-primary-glow:hover {
  background: #33e0ff;
  box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
  transform: translateY(-2px);
  color: #000 !important;
}

.btn-outline-glow {
  background: transparent;
  color: var(--text-primary) !important;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
}
.btn-outline-glow:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
  background: var(--accent-dim);
  transform: translateY(-2px);
}

/* ── About ──────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-text {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.85;
}
.about-text strong { color: var(--text-primary); }

.about-stack-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.stack-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  padding: 0.3rem 0.7rem;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}
.stat-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-2px);
}
.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ── Skills ─────────────────────────────────────────────── */
.skills-tabs {
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.skills-tabs .nav-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 1px;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 1rem;
  transition: all var(--transition);
}
.skills-tabs .nav-link:hover,
.skills-tabs .nav-link.active {
  color: var(--accent) !important;
  background: var(--accent-dim);
  border-color: var(--accent-border);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.skill-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.skill-card:hover::before { transform: scaleX(1); }

.skill-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* ── Work Experience (Home Summary) ─────────────────────── */
.exp-list { display: flex; flex-direction: column; gap: 1.25rem; }

.exp-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  transition: all var(--transition);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  align-items: start;
}
.exp-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
}
.exp-company {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  padding-top: 0.15rem;
}
.exp-company a { color: inherit; }
.exp-company a:hover { color: var(--accent); }

.exp-roles { display: flex; flex-direction: column; gap: 0.75rem; }
.exp-role { padding-bottom: 0.75rem; border-bottom: 1px solid var(--border-subtle); }
.exp-role:last-child { border-bottom: none; padding-bottom: 0; }
.exp-role-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.exp-position {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}
.exp-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  white-space: nowrap;
}
.exp-location {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ── Full Timeline (Experience page) ────────────────────── */
.full-timeline {
  position: relative;
  padding-left: 2rem;
  border-left: 2px solid var(--border);
  max-width: 860px;
  margin: 0 auto;
}

.ft-block { position: relative; margin-bottom: 3rem; }

.ft-company-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.ft-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0,217,255,0.5);
  flex-shrink: 0;
  margin-left: -2.72rem;
  border: 2px solid var(--bg-primary);
}
.ft-company-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.ft-company-name a { color: inherit; }
.ft-company-name a:hover { color: var(--accent); }

.ft-roles { display: flex; flex-direction: column; gap: 0.75rem; margin-left: 0.5rem; }
.ft-role-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  transition: all var(--transition);
}
.ft-role-card:hover {
  border-color: var(--accent-border);
  transform: translateX(4px);
}
.ft-role-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.ft-position {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}
.ft-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
  white-space: nowrap;
}
.ft-location {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}
.ft-bullets {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-top: 0.75rem;
  margin-bottom: 0;
  padding-left: 1.25rem;
  list-style: none;
}
.ft-bullets li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.3rem;
}
.ft-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7rem;
  top: 0.25rem;
}

/* ── Projects ───────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.project-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: left;
}
.project-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}
.project-card:hover::after { transform: scaleX(1); }

.project-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}
.project-icon { font-size: 1.5rem; color: var(--accent); }
.project-links { display: flex; gap: 0.75rem; }
.project-links a {
  color: var(--text-muted);
  font-size: 1rem;
  transition: color var(--transition);
}
.project-links a:hover { color: var(--text-primary); }

.project-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}
.project-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: 1.25rem;
}
.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}
.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.2rem 0.55rem;
}

/* ── Education ──────────────────────────────────────────── */
.education-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 800px;
  margin: 0 auto;
}
.edu-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
}
.edu-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-2px);
}
.edu-icon {
  font-size: 1.5rem;
  color: var(--accent);
  flex-shrink: 0;
  width: 48px; height: 48px;
  background: var(--accent-dim);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.edu-institution {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.edu-degree {
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 0.25rem;
}
.edu-years {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.edu-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}
.edu-grade {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* ── Achievements ───────────────────────────────────────── */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.ach-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
  position: relative;
}
.ach-card:hover {
  border-color: var(--purple);
  transform: translateY(-3px);
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.15);
}
.ach-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--purple);
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
}
.ach-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.ach-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}
.ach-org {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
}

/* ── Contact ────────────────────────────────────────────── */
.contact-section {
  text-align: center;
}
.contact-inner { max-width: 580px; margin: 0 auto; }
.contact-text {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.85;
  margin-bottom: 2.5rem;
}
.contact-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-secondary);
  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-brand {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-primary);
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-links { display: flex; gap: 1rem; }
.footer-links a {
  color: var(--text-muted);
  font-size: 1rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 992px) {
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .exp-card   { grid-template-columns: 1fr; gap: 0.75rem; }
}

@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  .hero-name { font-size: 2.8rem; }
  .hero-cta  { flex-direction: column; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .full-timeline { padding-left: 1.5rem; }
  .ft-dot { margin-left: -2.25rem; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .hero-cta .btn-primary-glow,
  .hero-cta .btn-outline-glow { width: 100%; justify-content: center; }
}

/* ── Page sections (non-hero pages) ────────────────────── */
.page-section {
  padding-top: calc(var(--nav-height) + 3rem);
}

/* ── About info card ────────────────────────────────────── */
.about-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  align-self: start;
}
.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
  gap: 1rem;
}
.info-row:last-child { border-bottom: none; }
.info-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.info-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
  text-align: right;
}

.about-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.about-ext-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary) !important;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.9rem;
  transition: all var(--transition);
}
.about-ext-link:hover {
  color: var(--accent) !important;
  border-color: var(--accent-border);
  background: var(--accent-dim);
}

/* ── Section navigation cards (home page) ───────────────── */
.nav-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.nav-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-decoration: none !important;
  color: var(--text-primary) !important;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.nav-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-dim), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.nav-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.nav-card:hover::before { opacity: 1; }
.nav-card:hover .nav-card-arrow { color: var(--accent); transform: translateX(4px); }

.nav-card-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
  position: relative;
}
.nav-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  position: relative;
}
.nav-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex-grow: 1;
  margin-bottom: 1rem;
  position: relative;
}
.nav-card-arrow {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: all var(--transition);
  position: relative;
  align-self: flex-end;
}

/* ── Scroll animations ──────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delay for grid children */
.skills-grid .skill-card:nth-child(1)  { transition-delay: 0.05s; }
.skills-grid .skill-card:nth-child(2)  { transition-delay: 0.10s; }
.skills-grid .skill-card:nth-child(3)  { transition-delay: 0.15s; }
.skills-grid .skill-card:nth-child(4)  { transition-delay: 0.20s; }
.skills-grid .skill-card:nth-child(5)  { transition-delay: 0.25s; }
.skills-grid .skill-card:nth-child(6)  { transition-delay: 0.30s; }

.projects-grid .project-card:nth-child(1) { transition-delay: 0.05s; }
.projects-grid .project-card:nth-child(2) { transition-delay: 0.15s; }
.projects-grid .project-card:nth-child(3) { transition-delay: 0.25s; }

/* Navbar scrolled state */
#mainNav.scrolled {
  background: rgba(10, 13, 20, 0.97);
  box-shadow: 0 1px 20px rgba(0,0,0,0.5);
}

/* ── Bootstrap overrides ────────────────────────────────── */
.tab-content > .tab-pane { display: none; }
.tab-content > .active   { display: block; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }