/* ════════════════════════════════════════════════════════════
   NADEEM NAZER PORTFOLIO — styles.css
   Modern, clean, professional design system
   ════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  /* Colors */
  --clr-bg:          #0d0d12;
  --clr-bg-card:     #13131a;
  --clr-bg-light:    #f8f9fc;
  --clr-surface:     #1a1a26;
  --clr-border:      rgba(255, 255, 255, 0.08);
  --clr-accent:      #6c63ff;
  --clr-accent-2:    #a78bfa;
  --clr-accent-glow: rgba(108, 99, 255, 0.25);
  --clr-text:        #e2e8f0;
  --clr-text-muted:  #94a3b8;
  --clr-text-dark:   #1e293b;
  --clr-white:       #ffffff;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.25);
  --shadow-md:  0 8px 32px rgba(0,0,0,0.35);
  --shadow-lg:  0 20px 60px rgba(0,0,0,0.5);
  --shadow-accent: 0 0 30px var(--clr-accent-glow);

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Container */
  --container-max: 1200px;
  --container-pad: clamp(1.25rem, 5vw, 3rem);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

/* ─── Container ─── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-accent); border-radius: var(--radius-full); }

/* ─── Selection ─── */
::selection { background: var(--clr-accent); color: var(--clr-white); }


/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--clr-accent);
  color: var(--clr-white);
  box-shadow: 0 4px 20px var(--clr-accent-glow);
}
.btn-primary:hover {
  background: #5a52e0;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--clr-accent-glow);
}

.btn-outline {
  border: 1.5px solid var(--clr-accent);
  color: var(--clr-accent);
  background: transparent;
}
.btn-outline:hover {
  background: var(--clr-accent);
  color: var(--clr-white);
  transform: translateY(-2px);
}

.btn-sm { padding: 0.5rem 1.1rem; font-size: 0.875rem; }
.btn-full { width: 100%; justify-content: center; }


/* ═══════════════════════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 var(--container-pad);
  height: 68px;
  display: flex;
  align-items: center;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(13, 13, 18, 0.92);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: -0.03em;
}
.nav-logo .dot { color: var(--clr-accent); }

.nav-links {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 50%; right: 50%;
  height: 2px;
  background: var(--clr-accent);
  transition: var(--transition);
}
.nav-link:hover,
.nav-link.active { color: var(--clr-white); }
.nav-link:hover::after,
.nav-link.active::after { left: 0; right: 0; }

.nav-cta {
  background: var(--clr-accent);
  color: var(--clr-white) !important;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-md);
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: #5a52e0; transform: translateY(-1px); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--clr-text);
  border-radius: var(--radius-full);
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }


/* ═══════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  padding: 100px var(--container-pad) var(--space-xl);
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
}

/* Subtle dot-grid background */
.hero-bg-grid {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(108,99,255,0.07) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: -1;
}

.hero-content { flex: 1; max-width: 600px; }

.hero-greeting {
  font-size: 1.1rem;
  color: var(--clr-accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
  letter-spacing: 0.04em;
}

.hero-name {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--clr-white);
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: clamp(1.2rem, 3vw, 1.75rem);
  font-weight: 500;
  color: var(--clr-accent-2);
  font-family: var(--font-mono);
  margin-bottom: var(--space-md);
  min-height: 2.5rem;
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--clr-accent);
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-bio {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 500px;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}
.hero-bio strong { color: var(--clr-text); }

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.hero-social {
  display: flex;
  gap: 0.85rem;
}
.hero-social a {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--clr-text-muted);
  transition: var(--transition);
}
.hero-social a:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

/* Hero image */
.hero-image {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
}
.hero-image-wrapper {
  width: clamp(220px, 28vw, 360px);
  height: clamp(220px, 28vw, 360px);
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--clr-accent);
  box-shadow: 0 0 0 8px var(--clr-accent-glow), var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-14px); }
}
.hero-image-wrapper img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
}

/* Scroll-down chevron */
.scroll-down {
  position: absolute;
  bottom: 2.5rem; left: 50%;
  transform: translateX(-50%);
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--clr-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-text-muted);
  animation: bounce 2s ease-in-out infinite;
  transition: var(--transition);
}
.scroll-down:hover { border-color: var(--clr-accent); color: var(--clr-accent); }
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(6px); } }


/* ═══════════════════════════════════════════════════════════
   SECTIONS — common patterns
   ═══════════════════════════════════════════════════════════ */
.section {
  padding: var(--space-2xl) 0;
}

.section-dark {
  background: var(--clr-bg-card);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-glow);
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
  border: 1px solid rgba(108,99,255,0.3);
}
.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--clr-white);
  line-height: 1.15;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}


/* ═══════════════════════════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════════════════════════ */
.section:not(.section-dark) { background: var(--clr-bg); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-xl);
  align-items: start;
}

.about-text p {
  color: var(--clr-text-muted);
  font-size: 1.05rem;
  margin-bottom: var(--space-sm);
}
.about-text strong { color: var(--clr-text); }

.about-stats {
  display: flex;
  gap: var(--space-lg);
  margin: var(--space-lg) 0;
}
.stat { text-align: center; }
.stat-number {
  display: block;
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--clr-accent);
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-muted);
  margin-top: 4px;
}

.about-links { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Info card */
.about-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.info-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.info-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.95rem;
  color: var(--clr-text-muted);
}
.info-item i {
  width: 20px;
  text-align: center;
  color: var(--clr-accent);
  flex-shrink: 0;
}


/* ═══════════════════════════════════════════════════════════
   EXPERIENCE — Timeline
   ═══════════════════════════════════════════════════════════ */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding-left: 2.5rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-accent), transparent);
}

.timeline-item { position: relative; }
.timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 1.5rem;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--clr-accent);
  border: 3px solid var(--clr-bg-card);
  box-shadow: 0 0 12px var(--clr-accent-glow);
}

.timeline-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition);
}
.timeline-card:hover {
  border-color: rgba(108,99,255,0.4);
  box-shadow: var(--shadow-accent);
  transform: translateX(4px);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.timeline-logo {
  width: 56px; height: 56px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 6px;
  flex-shrink: 0;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 0.2rem;
}
.part-time {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  background: rgba(108,99,255,0.2);
  color: var(--clr-accent-2);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-left: 0.5rem;
  vertical-align: middle;
}
.timeline-company {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.3rem;
}
.timeline-date {
  font-size: 0.82rem;
  color: var(--clr-accent);
  font-family: var(--font-mono);
}
.timeline-date i { margin-right: 4px; }

.timeline-bullets {
  list-style: none;
  margin-bottom: var(--space-md);
}
.timeline-bullets li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--clr-text-muted);
  font-size: 0.93rem;
  margin-bottom: 0.4rem;
  line-height: 1.65;
}
.timeline-bullets li::before {
  content: '▹';
  position: absolute; left: 0;
  color: var(--clr-accent);
}

.timeline-tags {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.timeline-tags span {
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(108,99,255,0.15);
  color: var(--clr-accent-2);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(108,99,255,0.25);
}


/* ═══════════════════════════════════════════════════════════
   SKILLS
   ═══════════════════════════════════════════════════════════ */
.skills-categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.skill-category {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.skill-category-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: var(--space-md);
  letter-spacing: 0.01em;
}
.skill-category-title i { color: var(--clr-accent); margin-right: 0.5rem; }

.skill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skill-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.9rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: var(--transition);
  cursor: default;
}
.skill-chip i { font-size: 1rem; }
.skill-chip:hover {
  border-color: var(--clr-accent);
  color: var(--clr-white);
  background: var(--clr-accent-glow);
  transform: translateY(-2px);
}


/* ═══════════════════════════════════════════════════════════
   PROJECTS
   ═══════════════════════════════════════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-md);
}

.project-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.project-card:hover {
  border-color: rgba(108,99,255,0.4);
  transform: translateY(-6px);
  box-shadow: var(--shadow-md), var(--shadow-accent);
}
.project-card:hover::before { transform: scaleX(1); }

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-icon-wrap {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--clr-accent-glow);
  border: 1px solid rgba(108,99,255,0.3);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: var(--clr-accent);
}

.project-links a {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: var(--clr-text-muted);
  transition: var(--transition);
}
.project-links a:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

.project-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-white);
  line-height: 1.4;
}
.project-desc {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  flex: 1;
}
.project-tags {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  margin-top: auto;
}
.project-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--clr-accent);
  background: rgba(108,99,255,0.1);
  border: 1px solid rgba(108,99,255,0.2);
  padding: 3px 8px;
  border-radius: var(--radius-full);
}


/* ═══════════════════════════════════════════════════════════
   EDUCATION
   ═══════════════════════════════════════════════════════════ */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-md);
}

.education-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  transition: var(--transition);
}
.education-card:hover {
  border-color: rgba(108,99,255,0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.ed-icon {
  width: 52px; height: 52px; flex-shrink: 0;
  background: var(--clr-accent-glow);
  border: 1px solid rgba(108,99,255,0.3);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: var(--clr-accent);
}

.ed-year {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--clr-accent);
  font-weight: 500;
  margin-bottom: 0.5rem;
  display: block;
}
.ed-degree {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 0.35rem;
}
.ed-uni {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.5rem;
}
.ed-grade {
  font-size: 0.875rem;
  color: var(--clr-accent-2);
  margin-bottom: 0.85rem;
}
.ed-grade i { margin-right: 4px; }

.ed-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.ed-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(108,99,255,0.1);
  border: 1px solid rgba(108,99,255,0.2);
  color: var(--clr-accent-2);
  padding: 3px 9px;
  border-radius: var(--radius-full);
}


/* ═══════════════════════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-intro {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  color: inherit;
}
.contact-item:hover {
  border-color: rgba(108,99,255,0.5);
  box-shadow: var(--shadow-accent);
  transform: translateX(4px);
}
.contact-item-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: var(--clr-accent-glow);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-accent); font-size: 1rem;
}
.contact-item > div:not(.contact-item-icon) {
  display: flex; flex-direction: column; gap: 2px;
}
.contact-item-label {
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--clr-text-muted);
}
.contact-item-value {
  font-size: 0.9rem; color: var(--clr-text);
}

/* Contact form */
.contact-form {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex; flex-direction: column; gap: var(--space-md);
}

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.85rem; font-weight: 600;
  color: var(--clr-text-muted); letter-spacing: 0.03em;
}
.form-group input,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 0.7rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--clr-text);
  transition: var(--transition);
  resize: vertical;
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(148,163,184,0.5); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
  background: rgba(108,99,255,0.05);
}


/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */
.footer {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
  padding: var(--space-lg) 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.footer-name {
  font-size: 1.1rem; font-weight: 700;
  color: var(--clr-white);
}
.footer-copy {
  font-size: 0.85rem; color: var(--clr-text-muted);
}
.footer-social {
  display: flex; gap: 0.65rem;
}
.footer-social a {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: var(--clr-text-muted);
  transition: var(--transition);
}
.footer-social a:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-2px);
}


/* ═══════════════════════════════════════════════════════════
   BACK TO TOP
   ═══════════════════════════════════════════════════════════ */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--clr-accent);
  color: var(--clr-white);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 20px var(--clr-accent-glow);
  opacity: 0; pointer-events: none;
  transform: translateY(12px);
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1; pointer-events: all;
  transform: translateY(0);
}
.back-to-top:hover { background: #5a52e0; transform: translateY(-3px); }


/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-card { max-width: 480px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  /* Nav mobile */
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(13,13,18,0.97);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    gap: var(--space-sm);
    border-bottom: 1px solid var(--clr-border);
    transform: translateY(-110%);
    transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
    z-index: 999;
  }
  .nav-links.open { transform: translateY(0); }

  /* Hero mobile */
  .hero {
    flex-direction: column-reverse;
    text-align: center;
    padding-top: 120px;
    padding-bottom: var(--space-xl);
    gap: var(--space-lg);
  }
  .hero-actions, .hero-social { justify-content: center; }
  .hero-bio { margin: 0 auto var(--space-lg); }
  .hero-image-wrapper {
    width: 200px; height: 200px;
  }
  .scroll-down { display: none; }

  /* Timeline mobile */
  .timeline { padding-left: 1.5rem; }
  .timeline-dot { left: -1.65rem; }
  .timeline-header { flex-direction: column; gap: 0.75rem; }

  /* Projects */
  .projects-grid { grid-template-columns: 1fr; }

  /* Education */
  .education-grid { grid-template-columns: 1fr; }

  /* Stats */
  .about-stats { gap: var(--space-md); }

  /* Footer */
  .footer-inner { flex-direction: column; align-items: center; text-align: center; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 2.3rem; }
  .section-title { font-size: 1.85rem; }
  .btn { padding: 0.65rem 1.3rem; font-size: 0.9rem; }
  .timeline-card { padding: var(--space-sm); }
  .projects-grid { grid-template-columns: 1fr; }
  .skill-chip { font-size: 0.8rem; }
}