/* ============================================================
   MOHAMMED AKBER HUSSAIN — PORTFOLIO
   Design System + All Component Styles
   ============================================================ */

/* ─── 1. CUSTOM PROPERTIES ─────────────────────────────────── */
:root {
  /* Colours */
  --bg-base:       hsl(222, 22%, 6%);
  --bg-surface:    hsl(222, 18%, 10%);
  --bg-elevated:   hsl(222, 16%, 14%);
  --accent:        hsl(217, 91%, 60%);
  --accent-dim:    hsla(217, 91%, 60%, 0.12);
  --accent-glow:   hsla(217, 91%, 60%, 0.30);
  --accent-hover:  hsl(217, 91%, 68%);
  --fire-glow:     hsla(25, 90%, 55%, 0.28);
  --water-glow:    hsla(200, 85%, 50%, 0.28);
  --text-primary:  hsl(220, 20%, 96%);
  --text-secondary:hsl(220, 14%, 64%);
  --text-muted:    hsl(220, 10%, 40%);
  --border:        hsl(222, 14%, 17%);
  --border-hover:  hsl(222, 14%, 28%);

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Layout */
  --navbar-h:    72px;
  --container-w: 1200px;
  --gap-section: clamp(5rem, 10vw, 9rem);
  --gap-card:    1.25rem;

  /* Radii */
  --r-card:  16px;
  --r-tag:    6px;
  --r-btn:    8px;

  /* Transitions */
  --ease-out:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in:   cubic-bezier(0.64, 0, 0.78, 0);
  --t-fast:    180ms;
  --t-med:     320ms;
  --t-slow:    500ms;
}

/* ─── 2. RESET & BASE ───────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: auto; /* Lenis handles smooth scroll */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  cursor: none; /* Custom cursor active on desktop */
}

body.mobile-menu-open {
  overflow: hidden;
}

img, video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: none;
  font-family: inherit;
  border: none;
  background: none;
}

/* ─── 3. NOISE TEXTURE ──────────────────────────────────────── */
.noise {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.032;
  pointer-events: none;
  z-index: 9000;
  animation: noiseShift 8s steps(2) infinite;
}

@keyframes noiseShift {
  0%   { transform: translate(0, 0); }
  25%  { transform: translate(-2%, -1%); }
  50%  { transform: translate(1%, 2%); }
  75%  { transform: translate(-1%, 1%); }
  100% { transform: translate(0, 0); }
}

/* ─── 4. SCROLL PROGRESS BAR ────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 9999;
  transform-origin: left;
  box-shadow: 0 0 10px var(--accent-glow);
  pointer-events: none;
  transition: width 50ms linear;
}

/* ─── 5. CUSTOM CURSOR ──────────────────────────────────────── */
.cursor-dot,
.cursor-ring {
  position: fixed;
  pointer-events: none;
  z-index: 8999;
  border-radius: 50%;
  mix-blend-mode: normal;
  will-change: transform;
}

.cursor-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  transform: translate(-50%, -50%);
}

.cursor-ring {
  width: 36px;
  height: 36px;
  border: 1.5px solid hsla(217, 91%, 60%, 0.55);
  transform: translate(-50%, -50%);
  transition: width var(--t-med) var(--ease-out),
              height var(--t-med) var(--ease-out),
              border-color var(--t-med) var(--ease-out),
              opacity var(--t-med) var(--ease-out);
}

.cursor-ring.is-expanded {
  width: 56px;
  height: 56px;
  border-color: var(--accent);
}

.cursor-ring.is-hidden {
  opacity: 0;
}

@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
  body { cursor: auto; }
  button { cursor: pointer; }
}

/* ─── 6. SKIP LINK ──────────────────────────────────────────── */
.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--r-btn);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 10000;
  transform: translateY(-120%);
  transition: transform var(--t-fast) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

/* ─── 7. SCREEN READER ONLY ─────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ─── 8. CONTAINER & LAYOUT ─────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.section {
  padding-block: var(--gap-section);
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

.section-header {
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

/* ─── 9. BUTTONS ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.75rem 1.6rem;
  border-radius: var(--r-btn);
  border: 1.5px solid transparent;
  transition: transform var(--t-fast) var(--ease-out),
              box-shadow var(--t-med) var(--ease-out),
              background var(--t-fast),
              border-color var(--t-fast),
              color var(--t-fast);
  cursor: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97) !important; }

.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px -6px var(--accent-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-hover);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn--outline:hover {
  background: var(--accent-dim);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -6px var(--accent-glow);
}

.btn--sm {
  font-size: 0.8rem;
  padding: 0.5rem 1.1rem;
}

/* ─── 10. TAGS / PILLS ──────────────────────────────────────── */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 400;
  padding: 0.35rem 0.8rem;
  border-radius: var(--r-tag);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  position: relative;
  overflow: hidden;
}

.tag::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, hsla(217, 91%, 75%, 0.18) 60%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 500ms var(--ease-out);
}

.tag:hover {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.tag:hover::after {
  transform: translateX(100%);
}

.tag--sm {
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
}

/* ─── 11. NAVBAR ────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-h);
  z-index: 100;
  transition: background var(--t-slow) var(--ease-out),
              backdrop-filter var(--t-slow) var(--ease-out),
              border-color var(--t-slow);
  border-bottom: 1px solid transparent;
}

.navbar.is-scrolled {
  background: hsla(222, 22%, 6%, 0.82);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-bottom-color: var(--border);
}

.navbar__inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 2rem;
}

.navbar__logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  transition: color var(--t-fast);
}
.navbar__logo:hover { color: var(--accent); }

.navbar__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.navbar__link {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  position: relative;
  transition: color var(--t-fast);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0.75rem;
  right: 0.75rem;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease-out);
}

.navbar__link:hover,
.navbar__link.is-active {
  color: var(--text-primary);
}

.navbar__link.is-active::after,
.navbar__link:hover::after {
  transform: scaleX(1);
}

#nav-resume-btn {
  margin-left: 0.75rem;
  flex-shrink: 0;
}

.navbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  margin-left: auto;
  border-radius: 6px;
  padding: 4px;
  transition: background var(--t-fast);
}
.navbar__burger:hover { background: var(--bg-elevated); }

.navbar__burger-bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--t-med) var(--ease-out), opacity var(--t-fast);
}

.navbar__burger.is-open .navbar__burger-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.navbar__burger.is-open .navbar__burger-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.navbar__burger.is-open .navbar__burger-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile nav */
.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 99;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-med) var(--ease-out);
}

.nav-mobile.is-open {
  pointer-events: all;
  opacity: 1;
}

.nav-mobile__backdrop {
  position: absolute;
  inset: 0;
  background: hsla(222, 22%, 4%, 0.6);
  backdrop-filter: blur(4px);
}

.nav-mobile__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 80vw);
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  padding: 5rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transform: translateX(100%);
  transition: transform var(--t-slow) var(--ease-out);
}

.nav-mobile.is-open .nav-mobile__panel { transform: translateX(0); }

.nav-mobile__close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-mobile__close:hover { color: var(--text-primary); background: var(--bg-elevated); }

.nav-mobile__links { display: flex; flex-direction: column; gap: 0.25rem; }

.nav-mobile__link {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--t-fast), padding-left var(--t-med) var(--ease-out);
}
.nav-mobile__link:hover { color: var(--accent); padding-left: 0.5rem; }

.nav-mobile__resume { margin-top: auto; }

/* ─── 12. HERO ──────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--navbar-h);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  max-width: var(--container-w);
  margin-inline: auto;
  width: 100%;
  text-align: center;
}

.hero__mono {
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 1.5vw, 0.85rem);
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  min-height: 1.2em;
}

.hero__name {
  display: block;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto clamp(2rem, 4vw, 3rem);
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6.2rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  text-align: center;
}

.hero__line {
  display: block;
  width: 100%;
  text-align: center;
  white-space: nowrap;
}

.hero__line--accent {
  color: var(--accent);
}

/* Character animation spans (injected by JS) */
.hero__char {
  display: inline-block;
}

.hero__sub {
  text-align: left;
}

.hero__br { display: none; }
@media (min-width: 640px) { .hero__br { display: inline; } }

.hero__ctas {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.5rem;
}

.hero__scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 2;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

.hero__scroll-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

@keyframes scrollPulse {
  0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
  40%  { opacity: 1; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: top; }
}

/* ─── 13. ABOUT ─────────────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

.about__photo-frame {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  max-width: 400px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
}

.about__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 500ms var(--ease-out);
  filter: grayscale(8%);
}

.about__photo-frame:hover .about__photo { transform: scale(1.03); }

.about__photo-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 70%, var(--accent-dim) 0%, transparent 65%);
  pointer-events: none;
}

.about__photo-border {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  border: 1px solid var(--border);
  pointer-events: none;
}

.about__text-col .section-label { margin-bottom: 0.5rem; }
.about__text-col .section-title { margin-bottom: 1.75rem; }

.about__bio {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.about__stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.about__stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.03em;
}

.about__stat-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ─── 14. SKILLS ────────────────────────────────────────────── */
.skills {
  background: radial-gradient(ellipse at 80% 50%, var(--accent-dim) 0%, transparent 60%);
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.skills__group {
  padding: 1.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  transition: border-color var(--t-med), box-shadow var(--t-med);
}

.skills__group:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px -8px hsla(222, 22%, 2%, 0.5);
}

.skills__group-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.skills__group-icon {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
}

.skills__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ─── 15. PROJECTS ──────────────────────────────────────────── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--gap-card);
}

.project-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--t-med) var(--ease-out),
              border-color var(--t-med),
              box-shadow var(--t-med) var(--ease-out);
  will-change: transform;
}

.project-card:hover {
  transform: translateY(-10px);
  border-color: var(--border-hover);
}

.project-card:hover .project-card__glow--fire { opacity: 1; }
.project-card:hover .project-card__glow--water { opacity: 1; }
.project-card:hover .project-card__glow--blue  { opacity: 1; }

.project-card__thumb {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--bg-elevated);
}

.project-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms var(--ease-out);
}

.project-card:hover .project-card__thumb img { transform: scale(1.05); }

.project-card__thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, var(--bg-surface) 100%);
}

.project-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.5rem;
  gap: 0.75rem;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.project-card__links {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.75rem;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  transition: color var(--t-fast);
}

.project-card__link:hover { color: var(--accent); }

/* Glow halos */
.project-card__glow {
  position: absolute;
  inset: -40px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-slow) var(--ease-out);
  z-index: 0;
}

.project-card__glow--fire  { background: var(--fire-glow); }
.project-card__glow--water { background: var(--water-glow); }
.project-card__glow--blue  { background: var(--accent-dim); }

/* ensure card content is above glow */
.project-card__thumb,
.project-card__body { position: relative; z-index: 1; }

/* ─── 16. CERTIFICATES ──────────────────────────────────────── */
.certs {
  background: radial-gradient(ellipse at 20% 50%, var(--accent-dim) 0%, transparent 55%);
}

.certs__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--gap-card);
}

.cert-card:nth-child(1) { grid-column: 1 / 3; }
.cert-card:nth-child(2) { grid-column: 3 / 5; }
.cert-card:nth-child(3) { grid-column: 5 / 7; }
.cert-card:nth-child(4) { grid-column: 2 / 4; }
.cert-card:nth-child(5) { grid-column: 4 / 6; }

.cert-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  overflow: hidden;
  cursor: none;
  transition: transform var(--t-med) var(--ease-out),
              border-color var(--t-med),
              box-shadow var(--t-med) var(--ease-out);
}

.cert-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.cert-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 14px 40px -10px var(--accent-glow);
}

.cert-card:hover .cert-card__hover-glow { opacity: 1; }

.cert-card__img-wrap {
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: var(--bg-elevated);
}

.cert-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms var(--ease-out), filter 300ms;
}

.cert-card:hover .cert-card__img-wrap img {
  transform: scale(1.04);
  filter: brightness(1.05);
}

.cert-card__info {
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cert-card__issuer {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.cert-card__elite {
  color: hsl(45, 90%, 60%);
  font-weight: 700;
}

.cert-card__title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.cert-card__date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.cert-card__hover-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-dim) 0%, transparent 70%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-med) var(--ease-out);
}

/* ─── 17. CONTACT ───────────────────────────────────────────── */
.contact__inner {
  max-width: 680px;
  margin-inline: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact__inner .section-label { margin-bottom: 1rem; }

.contact__heading {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.contact__heading-em {
  font-style: normal;
  color: var(--accent);
}

.contact__sub {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 52ch;
}

.contact__br { display: none; }
@media (min-width: 560px) { .contact__br { display: inline; } }

.contact__email {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--accent);
  padding-bottom: 2px;
  border-bottom: 1px solid var(--accent);
  transition: color var(--t-fast), border-color var(--t-fast), letter-spacing var(--t-med) var(--ease-out);
  margin-bottom: 2.5rem;
}

.contact__email:hover {
  color: var(--accent-hover);
  border-color: var(--accent-hover);
  letter-spacing: 0.02em;
}

.contact__socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.contact__social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}

.contact__social-link:not(.contact__social-link--soon):hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-elevated);
  transform: translateY(-2px);
}

.contact__social-link--soon {
  opacity: 0.45;
  cursor: default;
  position: relative;
}

.contact__soon-badge {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-elevated);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.contact__resume-btn { margin-top: 0.5rem; }

/* ─── 18. FOOTER ────────────────────────────────────────────── */
.footer {
  padding-block: 2rem;
  border-top: 1px solid var(--border);
}

.footer__text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-align: center;
}

/* ─── 19. LIGHTBOX ──────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-med) var(--ease-out);
}

.lightbox:not([aria-hidden="true"]) {
  pointer-events: all;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: hsla(222, 25%, 4%, 0.92);
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
}

.lightbox__container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 900px;
  width: 100%;
  will-change: transform, opacity;
}

.lightbox__close {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}
.lightbox__close:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
  border-color: var(--border-hover);
}

.lightbox__nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}
.lightbox__nav:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
  border-color: var(--border-hover);
}

.lightbox__nav--prev { left: 1.25rem; }
.lightbox__nav--next { right: 1.25rem; }

.lightbox__img-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  will-change: transform, opacity;
  max-height: 75vh;
  display: flex;
  align-items: center;
}

.lightbox__img {
  max-width: 100%;
  max-height: 75vh;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.lightbox__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 1rem;
}

.lightbox__caption {
  font-size: 0.85rem;
  color: var(--text-secondary);
  flex: 1;
}

.lightbox__counter {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

/* ─── 20. ANIMATIONS (initial hidden states for JS reveals) ─── */
[data-reveal] {
  will-change: transform, opacity;
}

/* ─── 21. SCROLLBAR ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--bg-elevated); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── 22. RESPONSIVE BREAKPOINTS ────────────────────────────── */
@media (max-width: 1024px) {
  .navbar__links,
  #nav-resume-btn { display: none; }
  .navbar__burger { display: flex; }
}

@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .about__photo-frame {
    max-width: 280px;
    aspect-ratio: 1 / 1;
    margin-inline: auto;
  }
  .about__photo {
    object-position: center 15%;
  }
  .about__stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .skills__grid {
    grid-template-columns: 1fr;
  }
  .certs__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cert-card:nth-child(1),
  .cert-card:nth-child(2),
  .cert-card:nth-child(3),
  .cert-card:nth-child(4),
  .cert-card:nth-child(5) {
    grid-column: auto;
  }
}

@media (max-width: 640px) {
  .projects__grid {
    grid-template-columns: 1fr;
  }
  .certs__grid {
    grid-template-columns: 1fr;
  }
  .about__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
  }
  .about__stat-num {
    font-size: 1.5rem;
  }
  .hero__name {
    font-size: clamp(2.5rem, 11vw, 4rem);
  }
  .lightbox__nav--prev { left: 0.5rem; }
  .lightbox__nav--next { right: 0.5rem; }
}

@media (max-width: 400px) {
  .hero__ctas { flex-direction: column; align-items: flex-start; }
  .about__stats { grid-template-columns: repeat(2, 1fr); }
}

/* ─── 23. PREFERS REDUCED MOTION ────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .noise { animation: none; }
  .hero__scroll-line { animation: none; opacity: 0.6; }
}

/* =========================================================
   VIRTUAL INTERNSHIPS
========================================================= */

.internships__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.internship-card {
  position: relative;
  min-height: 260px;
  padding: 2rem;
  overflow: hidden;
  isolation: isolate;

  display: flex;
  flex-direction: column;
  justify-content: space-between;

  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.045),
      rgba(255, 255, 255, 0.012)
    );

  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;

  transition:
    transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.4s ease,
    background 0.4s ease;
}

.internship-card:hover {
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.45);

  background:
    linear-gradient(
      145deg,
      rgba(59, 130, 246, 0.08),
      rgba(255, 255, 255, 0.015)
    );
}

.internship-card__number {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;

  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.28);
}

.internship-card__icon {
  width: 48px;
  height: 48px;

  display: grid;
  place-items: center;

  border: 1px solid rgba(59, 130, 246, 0.35);
  border-radius: 12px;

  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  font-weight: 500;

  color: #60a5fa;
  background: rgba(59, 130, 246, 0.07);

  transition:
    transform 0.45s ease,
    background 0.45s ease;
}

.internship-card:hover .internship-card__icon {
  transform: translateY(-4px) rotate(-3deg);
  background: rgba(59, 130, 246, 0.14);
}

.internship-card__content {
  margin-top: 2rem;
}

.internship-card__type {
  display: block;
  margin-bottom: 0.65rem;

  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;

  color: #60a5fa;
}

.internship-card__title {
  max-width: 85%;
  margin: 0 0 0.45rem;

  font-family: var(--font-display, "Syne", sans-serif);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.15;
  font-weight: 700;

  color: var(--text-primary, #fff);
}

.internship-card__org {
  margin: 0 0 1.25rem;

  font-size: 0.85rem;
  color: var(--text-secondary, rgba(255, 255, 255, 0.55));
}

.internship-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.internship-card__arrow {
  position: absolute;
  right: 1.5rem;
  bottom: 1.5rem;

  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.35);

  transition:
    transform 0.4s ease,
    color 0.4s ease;
}

.internship-card:hover .internship-card__arrow {
  transform: translate(4px, -4px);
  color: #60a5fa;
}

.internship-card__glow {
  position: absolute;
  z-index: -1;

  width: 180px;
  height: 180px;

  right: -90px;
  bottom: -100px;

  border-radius: 50%;

  background: rgba(59, 130, 246, 0.16);
  filter: blur(50px);

  opacity: 0.35;

  transition:
    opacity 0.5s ease,
    transform 0.5s ease;
}

.internship-card:hover .internship-card__glow {
  opacity: 0.8;
  transform: scale(1.4);
}


/* ─── MOBILE ─────────────────────────────────────────── */

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

  .internship-card {
    min-height: 235px;
    padding: 1.5rem;
  }

  .internship-card__title {
    max-width: 90%;
  }
}
/* ─── MOBILE HERO NAME ─────────────────────────────────────── */
@media (max-width: 767px) {
  .hero__name {
    width: 100%;
    max-width: 100%;
    margin-inline: auto;
    padding-inline: 0.25rem;

    font-size: clamp(2.35rem, 11.5vw, 3.6rem);
    line-height: 0.95;
    letter-spacing: -0.045em;
    text-align: center;
  }

  .hero__line {
    display: block;
    width: 100%;
    text-align: center;
    white-space: nowrap;
  }

  .hero__char {
    display: inline-block;
  }
}