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

:root {
  --ms-blue:       #0078D4;
  --ms-blue-dark:  #005A9E;
  --ms-blue-light: #50ABF1;
  --ms-blue-pale:  #EFF6FC;
  --ms-teal:       #00BCF2;
  --text-primary:  #1B1B1B;
  --text-secondary:#505050;
  --text-muted:    #767676;
  --bg:            #FFFFFF;
  --bg-alt:        #F8F9FA;
  --border:        #E8E8E8;
  --shadow-sm:     0 2px 8px rgba(0,0,0,.07);
  --shadow-md:     0 6px 24px rgba(0,0,0,.10);
  --shadow-lg:     0 16px 48px rgba(0,0,0,.12);
  --radius:        12px;
  --radius-lg:     20px;
  --transition:    .25s ease;
  --font:          'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font);
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== CONTAINER ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAV ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--ms-blue-light);
  box-shadow: 0 2px 8px rgba(0,120,212,.2);
  display: block;
  flex-shrink: 0;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.nav-logo:hover {
  border-color: var(--ms-blue);
  box-shadow: 0 4px 12px rgba(0,120,212,.35);
  transform: scale(1.08);
}
.nav-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.nav-links {
  display: flex;
  gap: 8px;
}
.nav-links a {
  padding: 6px 16px;
  border-radius: 6px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
}
.nav-links a:hover { background: var(--ms-blue-pale); color: var(--ms-blue); }
.nav-links a.active { color: var(--ms-blue); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== THEME TOGGLE BUTTON ===== */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.theme-toggle:hover {
  background: var(--ms-blue-pale);
  color: var(--ms-blue);
  border-color: var(--ms-blue-light);
}
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="dark"] .icon-sun  { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --ms-blue:        #58A6FF;
  --ms-blue-dark:   #388BFD;
  --ms-blue-light:  #79C0FF;
  --ms-blue-pale:   rgba(88,166,255,.12);
  --ms-teal:        #39D2F2;
  --text-primary:   #E6EDF3;
  --text-secondary: #8B949E;
  --text-muted:     #6E7681;
  --bg:             #0D1117;
  --bg-alt:         #161B22;
  --border:         #30363D;
  --shadow-sm:      0 2px 8px rgba(0,0,0,.4);
  --shadow-md:      0 6px 24px rgba(0,0,0,.5);
  --shadow-lg:      0 16px 48px rgba(0,0,0,.6);
}

/* Smooth colour transition when toggling */
html.transitioning, html.transitioning * {
  transition: background-color .25s ease, color .25s ease,
              border-color .25s ease, box-shadow .25s ease !important;
}

[data-theme="dark"] #navbar {
  background: rgba(13,17,23,.95);
}
[data-theme="dark"] .nav-links {
  background: #0D1117;
  border-color: var(--border);
}
[data-theme="dark"] .hero-bg {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(88,166,255,.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(0,188,242,.05) 0%, transparent 60%),
    linear-gradient(160deg, #0D1117 0%, #0F1B2D 50%, #0D1117 100%);
}
[data-theme="dark"] .hero-bg::after {
  background-image:
    linear-gradient(rgba(88,166,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88,166,255,.05) 1px, transparent 1px);
}
[data-theme="dark"] .trust-strip { background: #0A2540; }
[data-theme="dark"] .project-card.featured,
[data-theme="dark"] .testimonial-featured,
[data-theme="dark"] .edu-card:first-child {
  background: linear-gradient(145deg, #161B22, var(--bg));
}
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
  background: var(--bg-alt);
  color: var(--text-primary);
}
[data-theme="dark"] .section {
  border-top: 1px solid var(--border);
}
[data-theme="dark"] footer {
  background: #010409;
  border-top: 1px solid var(--border);
}
[data-theme="dark"] .hamburger span {
  background: var(--text-primary);
}

/* ===== HERO ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 100px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,120,212,.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(0,188,242,.08) 0%, transparent 60%),
    linear-gradient(160deg, #FAFBFF 0%, #F0F7FF 50%, #FAFBFF 100%);
}

/* Decorative grid */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,120,212,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,120,212,.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

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

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: var(--ms-blue-pale);
  color: var(--ms-blue);
  border: 1px solid rgba(0,120,212,.2);
  border-radius: 100px;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 24px;
  animation: fadeUp .6s ease both;
}

.hero-cursor {
  display: inline-block;
  width: 2px;
  height: .85em;
  background: var(--ms-blue);
  border-radius: 1px;
  margin-left: 2px;
  vertical-align: middle;
  animation: cursorBlink .7s step-end infinite;
}
@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

#hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 20px;
  animation: fadeUp .6s .1s ease both;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
  animation: fadeUp .6s .2s ease both;
}
.hero-subtitle strong { color: var(--ms-blue); }

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeUp .6s .3s ease both;
}

.btn {
  padding: 13px 28px;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: 2px solid transparent;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--ms-blue);
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,120,212,.3);
}
.btn-primary:hover {
  background: var(--ms-blue-dark);
  box-shadow: 0 8px 24px rgba(0,120,212,.4);
}

.btn-outline {
  background: transparent;
  color: var(--ms-blue);
  border-color: var(--ms-blue);
}
.btn-outline:hover { background: var(--ms-blue-pale); }

.btn-download {
  background: var(--ms-blue-pale);
  color: var(--ms-blue);
  border-color: var(--ms-blue);
}
.btn-download:hover {
  background: #d0e8f8;
  border-color: var(--ms-blue-dark);
  color: var(--ms-blue-dark);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: .75rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  animation: fadeUp .6s .5s ease both;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--ms-blue), transparent);
  animation: scrollPulse 2s ease infinite;
}

/* ===== SECTIONS ===== */
.section { padding: 76px 0; }
.section-alt { background: var(--bg-alt); }

.section-label {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ms-blue);
  margin-bottom: 12px;
}

.section h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin-bottom: 40px;
}

.highlight {
  color: var(--ms-blue);
  position: relative;
}

/* ===== TRUST STRIP ===== */
.trust-strip {
  background: var(--ms-blue);
  padding: 13px 0;
}
.trust-items {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #fff;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .01em;
  padding: 4px 24px;
}
.trust-divider {
  width: 1px;
  height: 18px;
  background: rgba(255,255,255,.3);
  flex-shrink: 0;
}
@media (max-width: 700px) {
  .trust-divider { display: none; }
  .trust-item { padding: 4px 14px; font-size: .78rem; }
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 64px;
  align-items: center;
}

.about-text h2 { margin-bottom: 20px; }

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.02rem;
  line-height: 1.8;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ms-blue);
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: .82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.about-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.profile-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,120,212,.3);
  border: 3px solid var(--ms-blue-light);
  flex-shrink: 0;
}
.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

/* Hero avatar */
.hero-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(255,255,255,.6);
  box-shadow: 0 8px 32px rgba(0,120,212,.25);
  margin: 0 auto 20px;
  animation: fadeUp .6s ease both;
}
.hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.profile-name {
  font-weight: 700;
  font-size: 1.05rem;
}
.profile-role {
  font-size: .88rem;
  color: var(--ms-blue);
  font-weight: 600;
}
.profile-company {
  font-size: .85rem;
  color: var(--text-muted);
}

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.profile-tags span {
  padding: 4px 12px;
  background: var(--ms-blue-pale);
  color: var(--ms-blue);
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 600;
}

/* ===== SKILLS ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.skill-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.skill-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease, box-shadow var(--transition), border-color var(--transition);
}
.skill-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--ms-blue-light);
}

.skill-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  min-height: 40px;
  display: flex;
  align-items: center;
}
.skill-icon img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.skill-card h3 {
  font-size: .98rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.skill-card li {
  font-size: .85rem;
  color: var(--text-secondary);
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.skill-card li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--ms-blue);
  flex-shrink: 0;
}
.skill-card li:last-child { border-bottom: none; }

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cert-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}
.cert-badge:hover {
  background: var(--ms-blue-pale);
  border-color: var(--ms-blue-light);
  color: var(--ms-blue);
}
.badge-icon {
  color: var(--ms-blue);
  font-size: .7rem;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.badge-icon img {
  width: 18px;
  height: 18px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

/* ===== PROJECTS / CAROUSEL ===== */
.carousel-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.carousel-viewport {
  flex: 1;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.carousel-track {
  display: flex;
  transition: transform .45s cubic-bezier(.4,0,.2,1);
  will-change: transform;
}

/* Each card is a full-width slide */
.carousel-track .project-card {
  flex: 0 0 100%;
  width: 100%;
  margin: 0;
  opacity: 1 !important;
  transform: none !important;
  box-sizing: border-box;
  max-height: 520px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--ms-blue-light) transparent;
}

.carousel-track .project-card--wide {
  grid-column: unset;
}

/* Education & Testimonial cards as carousel slides */
.carousel-track .edu-card {
  flex: 0 0 100%;
  width: 100%;
  margin: 0;
  opacity: 1 !important;
  transform: none !important;
  box-sizing: border-box;
  max-height: 340px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--ms-blue-light) transparent;
}
.carousel-track .testimonial-card {
  flex: 0 0 100%;
  width: 100%;
  margin: 0;
  opacity: 1 !important;
  transform: none !important;
  box-sizing: border-box;
  max-height: 460px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--ms-blue-light) transparent;
}
/* Remove grid-column span in carousel context */
.carousel-track .testimonial-featured {
  grid-column: unset;
}

.carousel-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--ms-blue);
  background: transparent;
  color: var(--ms-blue);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.carousel-btn:hover {
  background: var(--ms-blue);
  color: #fff;
}
.carousel-btn:disabled {
  opacity: .3;
  cursor: default;
  pointer-events: none;
}

.carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}

.carousel-dots {
  display: flex;
  gap: 7px;
}

.carousel-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  background: var(--border);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}
.carousel-dot.active {
  background: var(--ms-blue);
  transform: scale(1.4);
}
.carousel-dot:hover:not(.active) {
  background: var(--ms-blue-light);
}

.carousel-counter {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 36px;
}

@media (max-width: 600px) {
  .carousel-btn { width: 36px; height: 36px; }
  .carousel-track .project-card { max-height: 70vh; }
}

.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.project-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease, box-shadow var(--transition), border-color var(--transition);
}
.project-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--ms-blue-light);
}

.project-card.featured {
  border-color: var(--ms-blue-light);
  background: linear-gradient(145deg, #FAFCFF, var(--bg));
  position: relative;
  overflow: hidden;
}
.project-card.featured::before {
  content: 'Featured';
  position: absolute;
  top: 16px; right: 16px;
  padding: 3px 10px;
  background: var(--ms-blue);
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  border-radius: 100px;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.project-tag {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ms-blue);
}

.project-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
}

.project-card p {
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-tech span {
  padding: 3px 10px;
  background: var(--ms-blue-pale);
  border: 1px solid var(--ms-blue-light);
  border-radius: 100px;
  font-size: .76rem;
  font-weight: 600;
  color: var(--ms-blue-dark);
}

.project-impact {
  font-size: .85rem;
  font-weight: 600;
  color: var(--ms-blue-dark);
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== CONTACT ===== */
#contact.section { padding: 48px 0 52px; }
#contact .section-desc { max-width: none; }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 28px;
  margin-bottom: 24px;
  align-items: start;
}

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

/* ===== CONTACT FORM ===== */
.contact-form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.form-group label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: .02em;
}
.form-group input,
.form-group textarea {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font);
  font-size: .9rem;
  color: var(--text-primary);
  background: var(--bg);
  transition: border-color .2s, box-shadow .2s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ms-blue);
  box-shadow: 0 0 0 3px rgba(0,120,212,.1);
}
.contact-form .btn { align-self: flex-start; }

.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 36px 20px;
}
.form-success h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}
.form-success p {
  font-size: .9rem;
  color: var(--text-secondary);
}
.form-error {
  font-size: .83rem;
  color: #d32f2f;
  margin-top: 4px;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ms-blue);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease, background .2s ease;
  z-index: 90;
  box-shadow: 0 4px 16px rgba(0,120,212,.4);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--ms-blue-dark);
  transform: translateY(-2px);
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  padding: 24px 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.contact-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--ms-blue-light);
}

.contact-icon {
  width: 52px; height: 52px;
  background: var(--ms-blue-pale);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-icon--linkedin { background: #EBF3FB; }
.contact-icon--github   { background: #F6F8FA; border: 1px solid #E8E8E8; }

.contact-label {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ms-blue);
}

.contact-value {
  font-size: .88rem;
  color: var(--text-secondary);
  word-break: break-all;
}

.contact-note {
  text-align: center;
  padding: 14px 24px;
  background: var(--ms-blue-pale);
  border: 1px solid rgba(0,120,212,.15);
  border-radius: var(--radius);
  font-size: .88rem;
  color: var(--ms-blue-dark);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* ===== CERT STATS ===== */
.cert-stats {
  display: flex;
  gap: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 32px;
  overflow: hidden;
}
.cert-stat {
  flex: 1;
  padding: 24px 20px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.cert-stat:last-child { border-right: none; }
.cert-stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ms-blue);
  line-height: 1;
}
.cert-stat-label {
  display: block;
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.cert-section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* cert badge variants */
.cert-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  text-decoration: none;
}
.cert-badge:hover { background: var(--ms-blue-pale); border-color: var(--ms-blue-light); color: var(--ms-blue); }
.cert-year {
  font-size: .7rem;
  color: var(--text-muted);
  margin-left: 4px;
}
.cert-badge--ai { border-color: rgba(0,188,242,.3); }
.cert-badge--ai:hover { background: rgba(0,188,242,.08); border-color: rgba(0,188,242,.6); color: #007A99; }
.cert-badge--power { border-color: rgba(116,66,200,.25); }
.cert-badge--power:hover { background: rgba(116,66,200,.06); border-color: rgba(116,66,200,.5); color: #7442C8; }
.cert-badge--azure { border-color: rgba(0,120,212,.25); }
.cert-badge--dynamics { border-color: rgba(0,120,212,.2); }
.cert-badge--scrum { border-color: rgba(0,150,80,.25); }
.cert-badge--scrum:hover { background: rgba(0,150,80,.06); border-color: rgba(0,150,80,.5); color: #006633; }

/* ===== BADGE SHOWCASE ===== */
.badge-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin: 20px 0 36px;
}

.badge-showcase-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: transform .22s ease;
  width: 110px;
}
.badge-showcase-item:hover { transform: translateY(-5px); }

.badge-img-wrap {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0,0,0,.14);
  flex-shrink: 0;
}
.badge-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.badge-placeholder {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  box-shadow: 0 4px 18px rgba(0,0,0,.16);
  flex-shrink: 0;
}
.badge-abbr  { font-size: 14px; font-weight: 800; color: #fff; letter-spacing: .02em; }
.badge-tier  { font-size: 9.5px; font-weight: 600; color: rgba(255,255,255,.8); text-transform: uppercase; letter-spacing: .08em; }

.badge-placeholder--expert  { background: radial-gradient(circle at 40% 40%, #9C3FD4, #4B1480); }
.badge-placeholder--copilot { background: radial-gradient(circle at 40% 40%, #0091D5, #004E8C); }
.badge-placeholder--power   { background: radial-gradient(circle at 40% 40%, #9B4FC8, #5B1E8C); }
.badge-placeholder--azure   { background: radial-gradient(circle at 40% 40%, #0089D6, #114A8B); }
.badge-placeholder--scrum   { background: radial-gradient(circle at 40% 40%, #00AA7E, #006644); }
.badge-placeholder--mcse    { background: radial-gradient(circle at 40% 40%, #0078D4, #003F7A); }

.badge-showcase-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.35;
}
.badge-verify {
  font-size: 10px;
  color: var(--ms-blue);
  font-weight: 600;
  letter-spacing: .02em;
}
.badge-showcase-item:hover .badge-verify { text-decoration: underline; }

/* ===== COUNTER ANIMATION ===== */
[data-counter] { transition: none; }

/* ===== EXAMS GRID ===== */
.exams-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-top: 32px;
  margin-bottom: 14px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: inherit;
  transition: color .2s ease;
}
.exams-toggle:hover { color: var(--ms-blue); }
.exams-chevron { transition: transform .3s ease; flex-shrink: 0; }
.exams-toggle[aria-expanded="true"] .exams-chevron { transform: rotate(180deg); }

.exams-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.exams-grid.open { max-height: 800px; }
.exam-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: .83rem;
}
.exam-code {
  font-weight: 700;
  color: var(--ms-blue);
  font-size: .78rem;
  min-width: 52px;
  font-family: monospace;
}
.exam-name {
  flex: 1;
  color: var(--text-secondary);
}
.exam-year {
  font-size: .72rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ===== RECOGNITION ===== */
.recognition-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}

.recognition-card--featured {
  grid-column: span 3;
  background: linear-gradient(135deg, #EFF6FC, #F5FBFF);
  border-color: var(--ms-blue-light) !important;
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  text-align: left !important;
  gap: 20px !important;
}
.recognition-card--featured .recognition-icon {
  font-size: 2.8rem;
  margin-bottom: 0;
  flex-shrink: 0;
}
.recognition-card--featured h3 {
  color: var(--ms-blue-dark);
}

.recognition-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.recognition-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease, box-shadow var(--transition), border-color var(--transition);
}
.recognition-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--ms-blue-light);
}

.recognition-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: block;
}

.recognition-card h3 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
  line-height: 1.3;
}

.recognition-card p {
  font-size: .83rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== AWARDS STRIP ===== */
.awards-strip {
  margin-top: 28px;
  padding: 20px 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.awards-strip-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.awards-strip-items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.award-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: .8rem;
  color: var(--text-secondary);
}
.award-chip span { color: #F0A500; font-size: .85rem; }

.community-strip {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px 32px 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.community-items-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.community-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.community-icon { font-size: 1.2rem; }

.community-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
}

/* ===== CERT BADGES LINKS ===== */
a.cert-badge { cursor: pointer; }

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}

.testimonial-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.testimonial-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease, box-shadow var(--transition), border-color var(--transition);
}
.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--ms-blue-light);
}

.testimonial-featured {
  grid-column: span 2;
  border-color: var(--ms-blue-light);
  background: linear-gradient(145deg, #F5F9FF, var(--bg));
}

.testimonial-quote {
  font-size: 4rem;
  line-height: .8;
  color: var(--ms-blue-light);
  font-family: Georgia, serif;
  font-weight: 700;
  opacity: .6;
}

.testimonial-text {
  font-size: .92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
}
.testimonial-text strong { color: var(--text-primary); }

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ms-blue), var(--ms-teal));
  color: #fff;
  font-size: .85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.testimonial-name {
  font-weight: 700;
  font-size: .9rem;
  color: var(--text-primary);
}
.testimonial-title {
  font-size: .78rem;
  color: var(--text-secondary);
  margin-top: 2px;
}
.testimonial-company {
  font-size: .75rem;
  color: var(--ms-blue);
  font-weight: 600;
  margin-top: 1px;
}

.testimonial-context {
  font-size: .72rem;
  color: var(--text-muted);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px 12px;
  align-self: flex-start;
}

.testimonial-cta {
  text-align: center;
  margin-top: 8px;
}

@media (max-width: 900px) {
  .testimonials-grid { grid-template-columns: 1fr; }
  .testimonial-featured { grid-column: span 1; }
}

/* ===== EDUCATION ===== */
.education-timeline {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.edu-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  opacity: 0;
  transform: translateY(16px);
}
.edu-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease, box-shadow var(--transition), border-color var(--transition);
}
.edu-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--ms-blue-light);
}
.edu-card:first-child {
  border-color: var(--ms-blue-light);
  background: linear-gradient(145deg, #FAFCFF, var(--bg));
}

.edu-year {
  font-size: .82rem;
  font-weight: 700;
  color: var(--ms-blue);
  padding-top: 4px;
  line-height: 1.4;
}

.edu-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.edu-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.edu-school {
  font-size: .85rem;
  color: var(--text-muted);
}

.edu-grade {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ms-blue);
  background: var(--ms-blue-pale);
  border: 1px solid rgba(0,120,212,.15);
  border-radius: 8px;
  padding: 6px 14px;
  white-space: nowrap;
  flex-shrink: 0;
}

.edu-grade--gold {
  background: #FFF8E7;
  border-color: #F0C040;
  font-size: 1.4rem;
  padding: 4px 10px;
}

.edu-desc {
  font-size: .88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}

.edu-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.edu-tags span {
  padding: 3px 10px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

@media (max-width: 600px) {
  .edu-card { grid-template-columns: 1fr; gap: 8px; }
  .edu-year { padding-top: 0; }
}

/* ===== FOOTER ===== */
footer {
  background: var(--text-primary);
  color: rgba(255,255,255,.5);
  padding: 28px 0;
  font-size: .85rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-made { color: rgba(255,255,255,.35); }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50%       { opacity: .4; transform: scaleY(.7); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .about-card { max-width: 400px; margin: 0 auto; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .section { padding: 56px 0; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .about-stats { gap: 24px; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 16px; gap: 4px; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
}

@media (max-width: 480px) {
  .skills-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 280px; text-align: center; }
}

/* ===== NEWSLETTERS ===== */
.newsletter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 40px;
}
.newsletter-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
}
.newsletter-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.newsletter-card--featured {
  border-color: var(--ms-blue);
  border-width: 2px;
  background: linear-gradient(135deg, var(--ms-blue-pale) 0%, #fff 60%);
}
.newsletter-header {
  display: flex;
  align-items: center;
  gap: 16px;
}
.newsletter-icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}
.newsletter-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.newsletter-meta h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.newsletter-badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  width: fit-content;
}
.newsletter-badge--new {
  background: #E6F4EA;
  color: #1E7E34;
  border-color: #A8D5B0;
}
.newsletter-desc {
  font-size: .95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}
.newsletter-stats {
  display: flex;
  gap: 24px;
}
.newsletter-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.newsletter-stat-num {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ms-blue);
  line-height: 1;
}
.newsletter-stat-label {
  font-size: .72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.newsletter-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.newsletter-topics span {
  font-size: .78rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.newsletter-btn {
  margin-top: auto;
  align-self: flex-start;
}
.newsletter-cta-strip {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  font-size: .95rem;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
}

/* Dark mode overrides */
[data-theme="dark"] .newsletter-card {
  background: var(--bg);
  border-color: var(--border);
}
[data-theme="dark"] .newsletter-card--featured {
  background: linear-gradient(135deg, rgba(0,120,212,.12) 0%, var(--bg) 60%);
  border-color: var(--ms-blue);
}
[data-theme="dark"] .newsletter-badge--new {
  background: rgba(30,126,52,.2);
  border-color: rgba(30,126,52,.4);
}

@media (max-width: 800px) {
  .newsletter-grid { grid-template-columns: 1fr; }
  .newsletter-btn { align-self: stretch; text-align: center; }
}

/* ===== SPEAKING CARD ===== */
.recognition-card--speaking {
  border: 2px solid #7B2FBE;
  background: linear-gradient(135deg, #F5EEFF 0%, #fff 60%);
  grid-column: 1 / -1;
}
[data-theme="dark"] .recognition-card--speaking {
  background: linear-gradient(135deg, rgba(123,47,190,.12) 0%, var(--bg) 60%);
  border-color: #9B5FDE;
}
.speaking-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.speaking-chip {
  font-size: .78rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(123,47,190,.1);
  color: #7B2FBE;
  border: 1px solid rgba(123,47,190,.25);
}
[data-theme="dark"] .speaking-chip {
  background: rgba(123,47,190,.2);
  color: #C49EF5;
  border-color: rgba(123,47,190,.4);
}

/* ===== SPEAKING CARD LAYOUT ===== */
.speaking-inner {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}
.speaking-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.speaking-flyer {
  flex-shrink: 0;
  width: 200px;
}
.speaking-flyer img {
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}
@media (max-width: 700px) {
  .speaking-inner { flex-direction: column; }
  .speaking-flyer { width: 100%; max-width: 320px; margin: 0 auto; }
}

/* ===== SPEAKING CHIP LINK ===== */
a.speaking-chip--link {
  text-decoration: none;
  cursor: pointer;
  transition: background .15s, color .15s;
}
a.speaking-chip--link:hover {
  background: rgba(123,47,190,.22);
  color: #5a1a9e;
}
[data-theme="dark"] a.speaking-chip--link:hover {
  background: rgba(123,47,190,.35);
  color: #d4a8ff;
}