/* ================================================
   AADARSH GAJULA — PORTFOLIO
   Modern Dark Theme with Glassmorphism
   ================================================ */

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

:root {
  --bg-primary: #050507;
  --bg-secondary: #0d0d14;
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);

  --accent-1: #7c3aed;  /* violet */
  --accent-2: #06b6d4;  /* cyan */
  --accent-3: #f59e0b;  /* amber */
  --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));

  --text-primary: #f0f0fa;
  --text-secondary: #9191a4;
  --text-muted: #555566;

  --font-body: 'Inter', sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-full: 999px;

  --shadow: 0 4px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 60px rgba(124, 58, 237, 0.15);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: hidden;
  line-height: 1.6;
}

::selection {
  background: rgba(124, 58, 237, 0.4);
  color: #fff;
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-1); border-radius: 3px; }

/* ============ UTILITIES ============ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(5, 5, 7, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo .dot {
  color: var(--accent-1);
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.nav-cta {
  background: var(--gradient) !important;
  color: #fff !important;
  padding: 0.5rem 1.2rem !important;
  border-radius: var(--radius-full) !important;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============ HERO ============ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 8rem 2rem 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  opacity: 0.5;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: float 8s ease-in-out infinite alternate;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,0.5) 0%, transparent 70%);
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6,182,212,0.4) 0%, transparent 70%);
  bottom: -50px;
  right: -50px;
  animation-delay: -3s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(245,158,11,0.3) 0%, transparent 70%);
  top: 50%;
  left: 60%;
  animation-delay: -5s;
}

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 30px) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  animation: fadeInDown 0.6s ease both;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-name {
  font-family: var(--font-heading);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
  animation: fadeInUp 0.6s 0.1s ease both;
}

.hero-name-accent {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.85rem;
  animation: fadeInUp 0.6s 0.2s ease both;
}

.hero-bio {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
  animation: fadeInUp 0.6s 0.3s ease both;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.6s 0.4s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 24px rgba(124, 58, 237, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.5);
}

.btn-ghost {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  gap: 1rem;
  justify-content: center;
  animation: fadeInUp 0.6s 0.5s ease both;
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

.social-link:hover {
  background: var(--gradient);
  border-color: transparent;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: fadeIn 1s 1s ease both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============ SECTIONS ============ */
.section {
  padding: 7rem 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-2);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 3.5rem;
  line-height: 1.1;
}

/* ============ TIMELINE ============ */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-1), var(--accent-2), transparent);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-dot {
  position: absolute;
  left: -2.45rem;
  top: 1.5rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 4px var(--bg-primary), 0 0 16px rgba(124, 58, 237, 0.5);
  flex-shrink: 0;
}

.timeline-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.timeline-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.card-company {
  font-size: 0.9rem;
  color: var(--accent-2);
  font-weight: 500;
}

.card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 0.3rem 0.8rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

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

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: var(--accent-1);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* ============ EDUCATION ============ */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.edu-card {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: blur(10px);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.edu-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.edu-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.edu-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.edu-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
  stroke: #fff;
}

.edu-school {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.edu-degree {
  font-size: 0.85rem;
  color: var(--accent-2);
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.edu-period {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============ SKILLS ============ */
.skills-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.skill-group {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.skill-group.visible {
  opacity: 1;
  transform: translateY(0);
}

.skill-group-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

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

.skill-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--text-primary);
  transition: var(--transition);
  cursor: default;
}

.skill-pill:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.skill-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.cert-pill {
  background: rgba(6, 182, 212, 0.08);
  border-color: rgba(6, 182, 212, 0.2);
  color: var(--accent-2);
}

.cert-pill:hover {
  background: rgba(6, 182, 212, 0.14);
}

.lang-pill {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--accent-3);
}

.lang-pill:hover {
  background: rgba(245, 158, 11, 0.14);
}

.lang-level {
  font-size: 0.7rem;
  background: rgba(245, 158, 11, 0.2);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
  margin-left: 0.25rem;
}

/* ============ AWARDS ============ */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.award-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  position: relative;
  overflow: hidden;
}

.award-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: var(--transition);
}

.award-card:hover {
  border-color: rgba(124, 58, 237, 0.4);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(124, 58, 237, 0.2);
}

.award-card:hover::before {
  opacity: 0.05;
}

.award-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.award-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  position: relative;
}

.award-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  position: relative;
}

.award-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  position: relative;
}

/* ============ CONTACT ============ */
.contact-section {
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.contact-sub {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
  margin-bottom: 3rem;
  line-height: 1.8;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 550px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.contact-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: var(--transition);
}

.contact-card:hover {
  border-color: rgba(124, 58, 237, 0.5);
  transform: translateX(6px);
  box-shadow: var(--shadow);
}

.contact-card:hover::after {
  opacity: 0.06;
}

.contact-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.contact-card-icon svg {
  width: 20px;
  height: 20px;
  color: #fff;
}

.contact-card span {
  flex: 1;
  position: relative;
  z-index: 1;
}

.arrow {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
  z-index: 1;
}

.contact-card:hover .arrow {
  color: var(--accent-1);
  transform: translateX(4px);
}

/* ============ FOOTER ============ */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer strong {
  color: var(--text-secondary);
}

.footer-sub {
  margin-top: 0.25rem;
  font-size: 0.8rem;
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    top: 60px;
    background: rgba(5, 5, 7, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    backdrop-filter: blur(20px);
  }

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

  .nav-links a {
    font-size: 1.2rem;
    padding: 0.75rem 2rem;
  }

  .nav-hamburger {
    display: flex;
  }

  .hero {
    padding: 7rem 2rem 3rem;
    text-align: center;
  }

  .hero-content {
    text-align: center;
  }

  .timeline {
    padding-left: 1.5rem;
  }

  .card-header {
    flex-direction: column;
  }

  .awards-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .contact-cards {
    max-width: 100%;
  }
}