/* ─── Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── Design Tokens ─── */
:root {
  /* Palette – Deep space dark with aurora accents */
  --bg-deep:    #050a18;
  --bg-surface: #0a1128;
  --bg-card:    rgba(15, 25, 55, 0.55);
  --border-glass: rgba(100, 160, 255, 0.12);

  --accent-1: #6c63ff;   /* electric violet */
  --accent-2: #00d4ff;   /* cyan spark */
  --accent-3: #ff6b9d;   /* sunset pink */
  --accent-gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  --accent-gradient-warm: linear-gradient(135deg, var(--accent-3), var(--accent-1));

  --text-primary:   #f0f2f8;
  --text-secondary: #8892b0;
  --text-muted:     #5a6480;

  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-code: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.15), 0 0 80px rgba(0, 212, 255, 0.08);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3), 0 1px 0 var(--border-glass) inset;
  --shadow-elevated: 0 20px 60px rgba(0, 0, 0, 0.4);

  --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient background mesh gradient */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(108, 99, 255, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 50% 50%, rgba(255, 107, 157, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

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

a {
  text-decoration: none;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-2);
}

p {
  color: var(--text-secondary);
  max-width: 65ch;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  background: var(--accent-gradient);
  color: #fff;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  z-index: 1;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-2), var(--accent-1));
  opacity: 0;
  transition: opacity var(--transition-smooth);
  z-index: -1;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 99, 255, 0.35);
  color: #fff;
}

.btn:hover::before {
  opacity: 1;
}

.btn-outline {
  background: transparent;
  border: 2px solid rgba(108, 99, 255, 0.5);
  color: var(--accent-2);
}

.btn-outline::before {
  background: var(--accent-gradient);
}

.btn-outline:hover {
  border-color: transparent;
  color: #fff;
}

/* ─── Header / Navigation ─── */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0.8rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(5, 10, 24, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-glass);
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo span {
  -webkit-text-fill-color: var(--accent-2);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}

nav ul li a {
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

nav ul li a:hover {
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.1);
}

nav ul li a.active {
  color: var(--accent-2);
  background: rgba(0, 212, 255, 0.1);
  border-bottom: none;
}

/* ─── Main Content ─── */
main {
  flex: 1;
  padding: 3rem 5%;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

section {
  margin-bottom: 5rem;
}

/* ─── Section Headers ─── */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 0.75rem;
}

.section-header h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 3px;
}

.section-header p {
  margin: 0.5rem auto 0;
  text-align: center;
}

/* ─── Hero Section ─── */
#hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  min-height: 60vh;
  padding: 2rem 0;
}

.hero-content h1 {
  margin-bottom: 0.5rem;
}

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

.hero-content h3 {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.hero-content p {
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-photo-wrapper {
  position: relative;
  width: 300px;
  height: 340px;
}

.profile-photo-wrapper::before {
  content: "";
  position: absolute;
  inset: -4px;
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
  z-index: -1;
  opacity: 0.7;
  filter: blur(15px);
  animation: profileGlow 4s ease-in-out infinite alternate;
}

@keyframes profileGlow {
  0%   { opacity: 0.5; filter: blur(15px); }
  100% { opacity: 0.8; filter: blur(25px); }
}

.profile-photo-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-xl);
  border: 3px solid var(--border-glass);
}

.profile-placeholder {
  width: 100%;
  height: 100%;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 2px dashed var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  backdrop-filter: blur(10px);
}

/* ─── Two-Column Layout ─── */
.two-column {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 2rem;
}

/* ─── Grid Container ─── */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* ─── Cards — Glassmorphism ─── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-spring), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated), var(--shadow-glow);
  border-color: rgba(108, 99, 255, 0.25);
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
}

.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.card-placeholder-img {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.15), rgba(0, 212, 255, 0.1));
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 2rem;
}

.card .tech-badge {
  display: inline-block;
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent-2);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 500;
  margin-top: 0.5rem;
}

/* ─── Skill Cards ─── */
.skill-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  text-align: center;
  transition: transform var(--transition-spring), border-color var(--transition-smooth);
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
}

.skill-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0;
}

/* ─── Skills Progress Bars ─── */
.skill-item {
  margin-bottom: 1.8rem;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  font-weight: 500;
}

.skill-info span:first-child {
  color: var(--text-primary);
}

.skill-info span:last-child {
  color: var(--accent-2);
  font-weight: 600;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(88, 100, 140, 0.2);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.progress {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 10px;
  width: 0;
  animation: fillBar 1.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
  position: relative;
}

.progress::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
}

@keyframes fillBar {
  from { width: 0%; }
  to   { width: var(--skill-level); }
}

/* ─── Blog Posts ─── */
.blog-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition-spring), box-shadow var(--transition-smooth);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.blog-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin: 0.5rem 0 1rem;
}

.blog-meta span {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.blog-meta .category {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent-1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* ─── Gallery ─── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.gallery-item {
  position: relative;
  cursor: pointer;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth), filter var(--transition-smooth);
  display: block;
}

.gallery-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5, 10, 24, 0.6), transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.gallery-item:hover img {
  transform: scale(1.08);
  filter: brightness(1.1);
}

.gallery-item:hover::after {
  opacity: 1;
}

/* ─── Lightbox ─── */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 24, 0.95);
  backdrop-filter: blur(10px);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

#lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-elevated);
}

#lightbox-close,
.lightbox-nav {
  position: absolute;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
  opacity: 0.7;
}

#lightbox-close:hover,
.lightbox-nav:hover {
  color: var(--accent-2);
  transform: scale(1.15);
  opacity: 1;
}

#lightbox-close { top: 20px; right: 40px; }
#lightbox-prev  { left: 20px; }
#lightbox-next  { right: 20px; }

/* ─── Forms ─── */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

.error-message {
  color: var(--accent-3);
  font-size: 0.85rem;
  margin-top: 0.4rem;
  display: none;
}

/* ─── Code Blocks ─── */
code, pre {
  font-family: var(--font-code);
  background: rgba(15, 25, 55, 0.8);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

pre {
  padding: 1.2rem;
  overflow-x: auto;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
}

/* ─── Footer ─── */
footer {
  position: relative;
  z-index: 1;
  background: rgba(5, 10, 24, 0.8);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-glass);
  padding: 3.5rem 5% 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  margin-top: auto;
}

.footer-col h4 {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-col ul li a {
  color: var(--text-muted);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--accent-2);
  padding-left: 4px;
}

.social-icons a {
  margin-right: 0.8rem;
  font-size: 1.3rem;
  transition: transform var(--transition-fast);
}

.social-icons a:hover {
  transform: scale(1.2);
}

/* ─── Sidebar ─── */
aside {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
}

aside h3 {
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
  font-size: 1rem;
  color: var(--accent-2);
}

aside ul {
  list-style: none;
}

aside ul li {
  margin-bottom: 0.9rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ─── Breadcrumbs ─── */
.breadcrumbs {
  margin-bottom: 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumbs a {
  color: var(--accent-2);
}

/* ─── Scroll-Reveal Animations ─── */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Floating Particles ─── */
.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--accent-2);
  border-radius: 50%;
  opacity: 0;
  animation: floatParticle linear infinite;
}

@keyframes floatParticle {
  0% {
    opacity: 0;
    transform: translateY(100vh) scale(0);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.3;
  }
  100% {
    opacity: 0;
    transform: translateY(-10vh) scale(1);
  }
}

/* ─── Custom Scrollbar ─── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: rgba(108, 99, 255, 0.3);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(108, 99, 255, 0.5);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  #hero {
    grid-template-columns: 1fr;
    text-align: center;
    min-height: auto;
    padding: 1rem 0;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image {
    order: -1;
  }

  .profile-photo-wrapper {
    width: 200px;
    height: 220px;
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  nav ul {
    gap: 0.1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  nav ul li a {
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
  }

  header {
    flex-direction: column;
    gap: 0.5rem;
  }

  .grid-container {
    grid-template-columns: 1fr;
  }
}

/* ─── Accessibility ─── */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .particle {
    animation: none;
    display: none;
  }

  .profile-photo-wrapper::before {
    animation: none;
  }

  .progress {
    animation-duration: 0.01s;
  }
}