/* ===========================================
   Viswanath Reddy — Portfolio
   Dark theme · gradient accents · glassmorphism
   =========================================== */

:root {
  --bg: #07070b;
  --bg-soft: #0e0e16;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-border: rgba(255, 255, 255, 0.08);
  --text: #f2f2f7;
  --text-dim: #a0a0b0;
  --text-faint: #6b6b7b;
  --accent-1: #7c5cff;   /* violet */
  --accent-2: #00d4ff;   /* cyan   */
  --accent-3: #ff5c8a;   /* pink   */
  --grad: linear-gradient(120deg, var(--accent-1), var(--accent-2));
  --grad-warm: linear-gradient(120deg, var(--accent-3), var(--accent-1));
  --radius: 18px;
  --maxw: 1140px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html { scroll-behavior: smooth; }

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

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

/* ============ Animated background ============ */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background: var(--bg);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.45;
  animation: drift 22s ease-in-out infinite;
}
.blob-1 { width: 520px; height: 520px; background: var(--accent-1); top: -120px; left: -100px; }
.blob-2 { width: 480px; height: 480px; background: var(--accent-2); top: 30%; right: -140px; animation-delay: -7s; }
.blob-3 { width: 420px; height: 420px; background: var(--accent-3); bottom: -120px; left: 30%; animation-delay: -14s; opacity: 0.3; }

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(60px, -40px) scale(1.1); }
  66% { transform: translate(-40px, 50px) scale(0.95); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 40%, transparent 100%);
}

/* ============ Cursor glow ============ */
.cursor-glow {
  position: fixed;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,92,255,0.12), transparent 65%);
  pointer-events: none;
  z-index: -1;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
}

/* ============ Navigation ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 6vw;
  transition: all 0.4s ease;
}
.nav.scrolled {
  padding: 14px 6vw;
  background: rgba(7, 7, 11, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--surface-border);
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 1px;
}
.nav-logo span { color: var(--accent-2); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  flex-wrap: nowrap;
}
.nav-links a {
  font-size: 0.95rem;
  color: var(--text-dim);
  font-weight: 500;
  transition: color 0.25s;
  position: relative;
  white-space: nowrap;
}
.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--grad);
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:not(.nav-cta):hover::after { width: 100%; }
.nav-cta {
  padding: 9px 20px;
  border-radius: 100px;
  background: var(--grad);
  color: #fff !important;
  font-weight: 600;
}
.nav-cta:hover { box-shadow: 0 8px 28px rgba(124,92,255,0.4); transform: translateY(-2px); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.nav-toggle span { width: 26px; height: 2px; background: var(--text); transition: 0.3s; border-radius: 2px; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}
.btn-primary { background: var(--grad); color: #fff; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(124,92,255,0.45); }
.btn-ghost { border-color: var(--surface-border); color: var(--text); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); transform: translateY(-3px); }
.btn-block { width: 100%; margin-top: 18px; }
.btn-icon { display: inline-block; margin-right: 8px; font-weight: 700; transition: transform 0.3s; }
.btn-ghost:hover .btn-icon { transform: translateY(2px); }

/* ============ Hero ============ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 112px 6vw 72px;
  position: relative;
}
.hero-grid {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  align-items: center;
  gap: 0;
}
.hero-inner { max-width: 640px; }
.hero-greeting {
  font-family: var(--font-display);
  color: var(--accent-2);
  font-size: 1.1rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -1px;
  margin-bottom: 14px;
}

/* Hero photo blended into background */
.hero-photo {
  position: relative;
  justify-self: end;
  align-self: end;
  max-width: 540px;
  width: 100%;
}
.hero-photo img {
  width: 100%;
  max-width: 540px;
  max-height: 80vh;
  height: auto;
  display: block;
  margin-left: auto;
  position: relative;
  z-index: 1;
  /* blend left + top + bottom edges so the photo melts into the dark background */
  -webkit-mask-image:
    linear-gradient(to right, transparent 0%, #000 36%),
    linear-gradient(to bottom, transparent 0%, #000 14%, #000 90%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent 0%, #000 36%),
    linear-gradient(to bottom, transparent 0%, #000 14%, #000 90%, transparent 100%);
  mask-composite: intersect;
}
.hero-photo-ring {
  position: absolute;
  z-index: 0;
  width: 320px;
  height: 320px;
  top: 12%;
  left: 50%;
  transform: translateX(-40%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,92,255,0.35), transparent 65%);
  filter: blur(20px);
}
.gradient-text {
  background: linear-gradient(120deg, #fff 10%, var(--accent-1) 50%, var(--accent-2) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-role {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  font-weight: 500;
  color: var(--text);
  margin-bottom: 26px;
  min-height: 1.4em;
}
.cursor-blink { color: var(--accent-2); animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-tagline {
  font-size: 1.12rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 0 38px;
}
.hero-cta { display: flex; gap: 16px; justify-content: flex-start; flex-wrap: wrap; margin-bottom: 36px; }
.hero-socials { display: flex; gap: 28px; justify-content: flex-start; }
.hero-socials a {
  color: var(--text-faint);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: color 0.25s;
  position: relative;
}
.hero-socials a:hover { color: var(--accent-2); }

.scroll-hint {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-faint);
  font-size: 0.78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.scroll-line { width: 1px; height: 40px; background: linear-gradient(var(--accent-2), transparent); animation: scrollPulse 2s ease-in-out infinite; }
@keyframes scrollPulse { 0%,100% { opacity: 0.3; transform: scaleY(0.6); } 50% { opacity: 1; transform: scaleY(1); } }

/* ============ Stats ============ */
.stats {
  max-width: var(--maxw);
  margin: -40px auto 40px;
  padding: 0 6vw;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform 0.3s, border-color 0.3s;
}
.stat:hover { transform: translateY(-6px); border-color: rgba(124,92,255,0.4); }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label { color: var(--text-dim); font-size: 0.9rem; letter-spacing: 0.5px; }

/* ============ Sections ============ */
.section { max-width: var(--maxw); margin: 0 auto; padding: 90px 6vw; }
.section-head { margin-bottom: 56px; }
.section-tag {
  font-family: var(--font-display);
  color: var(--accent-2);
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-top: 12px;
}

/* ============ About ============ */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px; align-items: start; }
.about-text p { color: var(--text-dim); font-size: 1.08rem; margin-bottom: 20px; }
.about-text strong { color: var(--text); }
.about-points { list-style: none; margin-top: 26px; display: grid; gap: 14px; }
.about-points li {
  padding-left: 30px;
  position: relative;
  color: var(--text-dim);
}
.about-points li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-2);
  font-size: 1.2rem;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 36px 30px;
  text-align: center;
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}
.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--grad);
}
.about-avatar {
  width: 92px; height: 92px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--grad);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
}
.about-card h3 { font-family: var(--font-display); font-size: 1.3rem; }
.about-card-role { color: var(--accent-2); margin-bottom: 22px; font-weight: 500; }
.about-meta { display: grid; gap: 10px; text-align: left; margin-bottom: 6px; }
.about-meta span { color: var(--text-dim); font-size: 0.92rem; }

/* ============ Beyond the Code ============ */
.big-quote {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.5vw, 2.8rem);
  font-weight: 600;
  text-align: center;
  line-height: 1.3;
  max-width: 820px;
  margin: 0 auto 50px;
  color: var(--text);
}
.profile-card-wrap {
  max-width: 560px;
  margin: 0 auto;
  border-radius: 24px;
  padding: 10px;
  background: linear-gradient(135deg, rgba(124,92,255,0.5), rgba(0,212,255,0.5));
  box-shadow: 0 30px 80px rgba(0,0,0,0.55);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.profile-card-wrap:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 40px 100px rgba(124,92,255,0.35);
}
.profile-card-wrap img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
}
.profile-card-placeholder {
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 360px;
  border-radius: 16px;
  background: var(--bg-soft);
  color: var(--text-faint);
  font-size: 1rem;
  line-height: 1.8;
  padding: 30px;
}
.profile-card-placeholder code {
  color: var(--accent-2);
  font-size: 0.95rem;
  background: rgba(0,212,255,0.08);
  padding: 3px 8px;
  border-radius: 6px;
}
.mindset { margin-top: 56px; text-align: center; }
.mindset-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 26px;
}
.mindset-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.mindset-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 100px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-dim);
  transition: all 0.3s;
}
.mindset-item:hover {
  border-color: rgba(124,92,255,0.4);
  color: var(--text);
  transform: translateY(-4px);
}
.mindset-item span { font-size: 1.2rem; }

/* ============ Skills ============ */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.skill-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.skill-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,212,255,0.35);
  box-shadow: 0 18px 50px rgba(0,0,0,0.4);
}
.skill-card h3 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 18px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips span {
  padding: 7px 14px;
  border-radius: 100px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--surface-border);
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: all 0.25s;
}
.skill-card:hover .chips span { border-color: rgba(124,92,255,0.3); color: var(--text); }

/* ============ Timeline ============ */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--accent-1), var(--accent-2), transparent);
}
.timeline-item { position: relative; margin-bottom: 44px; }
.timeline-dot {
  position: absolute;
  left: -30px; top: 6px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 5px rgba(0,212,255,0.15);
}
.timeline-content {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 26px 30px;
  transition: transform 0.3s, border-color 0.3s;
}
.timeline-content:hover { transform: translateX(6px); border-color: rgba(124,92,255,0.35); }
.timeline-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; }
.timeline-head h3 { font-family: var(--font-display); font-size: 1.3rem; }
.timeline-date { color: var(--accent-2); font-size: 0.9rem; font-weight: 500; }
.timeline-company { color: var(--text); font-weight: 600; margin-top: 2px; }
.timeline-sub { color: var(--text-faint); font-size: 0.92rem; margin-bottom: 14px; font-style: italic; }
.timeline-content ul { list-style: none; display: grid; gap: 9px; }
.timeline-content li { padding-left: 22px; position: relative; color: var(--text-dim); font-size: 0.96rem; }
.timeline-content li::before { content: '▹'; position: absolute; left: 0; color: var(--accent-2); }
.timeline-content strong { color: var(--text); }

/* ============ Projects ============ */
.projects-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.project-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s;
  transform-style: preserve-3d;
}
.project-card:hover { border-color: rgba(124,92,255,0.4); }
.project-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(124,92,255,0.14), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.project-card:hover .project-glow { opacity: 1; }
.project-body { padding: 32px; position: relative; z-index: 1; }
.project-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.25);
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}
.project-body h3 { font-family: var(--font-display); font-size: 1.6rem; margin-bottom: 12px; }
.project-body > p { color: var(--text-dim); margin-bottom: 20px; }
.project-tech { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.project-tech span {
  font-size: 0.8rem;
  padding: 5px 12px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  color: var(--text-faint);
}
.project-links { display: flex; gap: 22px; }
.project-links a { color: var(--accent-2); font-weight: 600; font-size: 0.92rem; transition: opacity 0.25s; }
.project-links a:hover { opacity: 0.7; }

/* ============ Contact ============ */
.contact { text-align: center; }
.contact-inner { max-width: 680px; margin: 0 auto; }
.contact-text { color: var(--text-dim); font-size: 1.1rem; margin: 18px auto 32px; }
.contact-email {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 4vw, 2.2rem);
  font-weight: 600;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 34px;
  transition: opacity 0.25s;
}
.contact-email:hover { opacity: 0.8; }
.contact-socials { display: flex; gap: 30px; justify-content: center; flex-wrap: wrap; }
.contact-socials a { color: var(--text-dim); font-weight: 500; transition: color 0.25s; }
.contact-socials a:hover { color: var(--accent-2); }

/* ============ Footer ============ */
.footer { text-align: center; padding: 40px 6vw; border-top: 1px solid var(--surface-border); color: var(--text-faint); font-size: 0.9rem; }
.footer-tagline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .hero { min-height: auto; padding-top: 130px; padding-bottom: 70px; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 34px; }
  .hero-inner { max-width: 100%; margin: 0 auto; }
  .hero-cta, .hero-socials { justify-content: center; }
  .hero-photo { max-width: 320px; margin: 0 auto; align-self: center; justify-self: center; }
  .hero-photo img {
    margin: 0 auto;
    max-height: none;
    -webkit-mask-image: linear-gradient(to bottom, #000 82%, transparent 100%);
    mask-image: linear-gradient(to bottom, #000 82%, transparent 100%);
  }
  .hero-photo-ring { transform: translateX(-50%); }
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: 70%;
    max-width: 320px;
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    background: rgba(14,14,22,0.96);
    backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: transform 0.4s ease;
    border-left: 1px solid var(--surface-border);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .skills-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 6vw; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}