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

:root {
  /* Colors */
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --secondary: #64748b;
  --accent: #f59e0b;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --border: #e2e8f0;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-hover: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Footer */
  --footer-bg: #0b1220;     /* consistent dark footer background */
  --footer-text: #e2e8f0;   /* readable footer text */
  --footer-muted: #94a3b8;  /* optional muted tone */
}

html {
  scroll-behavior: smooth;
}

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 70px;
}

.brand {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.brand-dot {
  color: var(--primary);
  font-weight: 400;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  gap: 4px;
}

.hamburger {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.primary-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.primary-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
}

.primary-nav a:hover,
.primary-nav a:focus {
  color: var(--primary);
  background-color: transparent; /* intentionally no pill background: underline + color only */
}

.primary-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  transform: translateX(-50%);
}

.primary-nav a:hover::after {
  width: 80%;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .primary-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .primary-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .primary-nav ul {
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
  }
  
  .primary-nav a {
    padding: var(--spacing-sm) var(--spacing-md);
    width: 100%;
    text-align: center;
  }
  
  .nav-toggle.active .hamburger:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .nav-toggle.active .hamburger:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active .hamburger:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
}

/* Improve anchor scroll positioning under fixed header */
section[id] {
  scroll-margin-top: 90px;
}

/* Header scrolled state */
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: rgba(226, 232, 240, 0.9);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* Active nav link styling */
.primary-nav a.active {
  color: var(--primary);
  background-color: transparent; /* active keeps only underline + color */
}
.primary-nav a.active::after {
  width: 80%;
}

/* Optional: re-enable a subtle hover background on devices that support hover (desktop) */
/*
@media (hover:hover) and (pointer:fine) {
  .primary-nav a:hover,
  .primary-nav a:focus-visible {
    background-color: var(--bg-tertiary);
  }
}
*/
/* Section Base */
.section {
  padding: var(--spacing-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  position: relative;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  width: 60px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
  transform: translateX(-50%);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Hero Section */
.hero {
  padding: calc(70px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero-greeting {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xs);
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;             /* allow panning */
  animation: heroGradient 5s linear infinite; /* faster sweep (was 8s) */
}

.hero-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  width: 0ch;                             /* will grow during typing */
  animation:
    typeTitle 1.4s steps(18, end) 0.2s forwards; /* removed caret blink */
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.hero-social {
  display: flex;
  gap: var(--spacing-md);
}

.hero-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 50%;
  text-decoration: none;
  transition: var(--transition);
  font-size: 1.25rem;
  position: relative;            /* contain the glow */
  overflow: hidden;              /* contain the glow */
}

.hero-social a::before {
  content: '';
  position: absolute;
  inset: -2px;                   /* slight bleed for blur */
  pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(500px circle at var(--px, 50%) var(--py, 50%),
      rgba(59,130,246,0.25), transparent 60%);
  filter: blur(12px);
  opacity: 0;
  transition: opacity 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-social a:hover::before {
  opacity: 1;                    /* glow in on hover */
}

.hero-social a i {
  position: relative;            /* keep icon above glow */
  z-index: 1;
}

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

.hero-avatar {
  position: relative;
  width: 320px;  /* was 300px */
  height: 320px; /* was 300px */
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient);
  border-radius: 50%;
  animation: none; /* was: float 6s ease-in-out infinite — keep the ring still */
}

.avatar-img {
  position: relative;
  z-index: 1;
  width: 94%;
  height: 94%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--bg-primary); /* clean ring that adapts to theme */
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.avatar-code {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 500;
  color: white;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* Animated gradient sweep on the name */
@keyframes heroGradient {
  to { background-position: 200% center; }
}

/* Typewriter effect for the title */
@keyframes typeTitle {
  from { width: 0ch; }
  to   { width: 18ch; }                   /* “Frontend Developer” ~ 18 chars */
}

@keyframes caret {
  0%, 50% { border-right-color: var(--primary); }
  50.01%, 100% { border-right-color: transparent; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn.primary {
  /* base fill remains the same visually via the third layer */
  color: #fff;
  box-shadow: var(--shadow-md);

  /* dual overlay layers + base layer */
  position: relative;
  overflow: hidden;
  background-image:
    var(--gradient-hover),              /* left overlay (topmost) */
    var(--gradient-hover),              /* right overlay */
    var(--gradient);                    /* base fill */
  background-repeat: no-repeat, no-repeat, no-repeat;
  background-position: left center, right center, center;
  background-size: 0% 100%, 0% 100%, 100% 100%;

  transition:
    background-size 520ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.btn.primary:hover,
.btn.primary:focus-visible {
  /* grow both overlays inward to meet at center */
  background-size: 51% 100%, 51% 100%, 100% 100%;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  outline: none;
}

.btn.ghost {
  /* base stays the same visually */
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);

  /* animated dual-side fill */
  position: relative;
  overflow: hidden;
  background-image:
    linear-gradient(90deg, var(--primary), var(--primary)),
    linear-gradient(270deg, var(--primary), var(--primary));
  background-repeat: no-repeat;
  background-position: left center, right center;
  background-size: 0% 100%, 0% 100%;
  background-clip: padding-box;

  /* smoother timing for the wipe + standard motion for lift/text */
  transition:
    background-size 520ms cubic-bezier(0.22, 1, 0.36, 1),
    color 320ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.btn.ghost:hover,
.btn.ghost:focus-visible {
  /* grow both sides toward center; 51% to avoid a hairline gap */
  background-size: 51% 100%, 51% 100%;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  outline: none;
}

/* Send Message button: remove UA border/appearance only for this button */
#sendBtn.btn.primary {
  border: 0;
  -webkit-appearance: none;
  appearance: none;
  background-clip: padding-box; /* avoid any edge bleeding */
}

/* Remove Firefox inner focus border on this button only */
#sendBtn::-moz-focus-inner {
  border: 0;
  padding: 0;
}

/* About Section */
.about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-text p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.stat {
  text-align: center;
  padding: var(--spacing-md);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;  /* contain glow */
  overflow: hidden;    /* contain glow */
}

/* Cursor-follow glow for About stats */
.stat::before {
  content: '';
  position: absolute;
  inset: -2px; /* slight bleed for blur */
  pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(500px circle at var(--px, 50%) var(--py, 50%),
      rgba(59,130,246,0.25), transparent 60%);
  filter: blur(12px);
  opacity: 0;
  transition: opacity 320ms cubic-bezier(0.22, 1, 0.36, 1);
}
.stat:hover::before {
  opacity: 1;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.about-card {
  background: var(--text-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transform: rotate(3deg);
  transform-origin: 50% 85%;
  transition: var(--transition);
  background-color: #17191e;
  
}

.about-card:hover {
  transform: rotate(0deg) scale(1.05);
}

.card-header {
  background: #2d3748;
  padding: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.card-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.card-dots span:nth-child(1) { background: #ff5f56; }
.card-dots span:nth-child(2) { background: #ffbd2e; }
.card-dots span:nth-child(3) { background: #27ca3f; }

.card-content {
  padding: var(--spacing-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  
}

.code-line {
  margin-bottom: 0.5rem;
}

.code-line.indent {
  padding-left: var(--spacing-md);
}

.code-keyword { color: #c792ea; }
.code-variable { color: #82aaff; }
.code-operator { color: #89ddff; }
.code-property { color: #f07178; }
.code-string { color: #c3e88d; }
.code-bracket { color: #89ddff; }

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.skill-category {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;         /* contain the glow */
  overflow: hidden;           /* contain the glow */
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.skill-category h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  transition:
    background-color 420ms cubic-bezier(0.22, 1, 0.36, 1),
    color 420ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 420ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: background-color, color, transform, box-shadow;
  backface-visibility: hidden;
}

.skill-item:hover {
  background: var(--primary);
  color: white;
  
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(59, 130, 246, 0.18);
}

.skill-item i {
  font-size: 1rem;
  transition: color 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* Radial glow overlay for skill tiles (same as contact tiles) */
.skill-category::before {
  content: '';
  position: absolute;
  inset: -2px;
  pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(500px circle at var(--px, 50%) var(--py, 50%),
      rgba(59,130,246,0.22), transparent 60%);
  filter: blur(12px);
  opacity: 0;
  transition: opacity 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.skill-category:hover::before {
  opacity: 1;
}

/* Projects Section */
.projects {
  background: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.project-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  transform: rotate(1.25deg);               /* initial tilt */
  transform-origin: 50% 85%;
}

.project-card:nth-child(even) {
  transform: rotate(-1.25deg);              /* alternate tilt for visual rhythm */
}

/* Keep the subtle tilt initially; straighten + lift on hover (already present) */
/* No change needed here, just ensuring reveal isn't applied to .project-card itself */

.project-card:hover {
  transform: rotate(0deg) translateY(-10px) scale(1.02); /* straight + lift */
}

.project-thumb {
  height: 200px;
  background: var(--gradient);
  position: relative;
  overflow: hidden;
}

.project-thumb-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.02);
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1), filter 300ms cubic-bezier(0.22, 1, 0.36, 1);
  filter: saturate(1.05) contrast(1.02);
}

.project-card:hover .project-thumb-img {
  transform: scale(1.08);
  filter: brightness(0.68) saturate(1.08);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 39, 0.45);            /* semi-transparent dark */
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 300ms cubic-bezier(0.22, 1, 0.36, 1); /* sync with card */
  z-index: 2; /* keep overlay above the image */
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-links {
  display: flex;
  gap: var(--spacing-md);
}

.project-link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.14);         /* transparent glass */
  color: #ffffff;                                 /* white icons */
  border: 1px solid rgba(255, 255, 255, 0.38);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.18),
    0 2px 8px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: var(--transition);
  cursor: pointer;
  font-size: 1.25rem;
}

.project-link-btn i {
  color: inherit;                                  /* ensure icons take the button color */
}

.project-link-btn:hover {
  background: rgba(59, 130, 246, 0.95);           /* var(--primary) strong */
  border-color: transparent;
  color: #ffffff;
  box-shadow:
    0 10px 24px rgba(59, 130, 246, 0.35),
    0 4px 10px rgba(59, 130, 246, 0.25);
  transform: scale(1.1) translateY(-1px);
}

.project-link-btn:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px rgba(59, 130, 246, 0.35),
    0 8px 24px rgba(0, 0, 0, 0.18);
}

.project-body {
  padding: var(--spacing-lg);
}

.project-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.project-desc {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.project-tags span {
  padding: 0.25rem var(--spacing-xs);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.projects-cta {
  text-align: center;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.contact-info p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden; /* contain the glow */
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1),
              background-color 300ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 300ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, background-color, box-shadow;
  backface-visibility: hidden;
  transform-style: preserve-3d;
}

.contact-method::before {
  content: '';
  position: absolute;
  inset: -2px;                 /* slight bleed for blur */
  pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(500px circle at var(--px, 50%) var(--py, 50%),
      rgba(59,130,246,0.25), transparent 60%);
  filter: blur(12px);
  opacity: 0;
  transition: opacity 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.contact-method:hover::before {
  opacity: 1;                  /* glow in */
}

.contact-method:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

/* Normalize link colors (no purple on visited) inside tiles */
.contact-method a:link,
.contact-method a:visited {
  color: var(--text-secondary);
}
.contact-method a:hover {
  color: var(--primary);
}

/* Smooth icon motion */
.contact-method i {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: white;
  border-radius: 50%;
 
  font-size: 1.25rem;
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1),
              background-color 300ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 300ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, background-color, box-shadow;
}

.contact-method:hover i {
  transform: scale(1.2);
  background: var(--primary-dark);
  box-shadow: 0 6px 12px rgba(37, 99, 235, 0.25);
}

/* Contact Form */
.contact-form {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 300ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, box-shadow;
}

.contact-form:hover,
.contact-form:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.label-text {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

input,
textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-actions {
  margin-top: var(--spacing-lg);
}

/* Footer */
.site-footer {
  /* background: var(--text-primary); */ /* caused footer to become light in dark mode */
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid rgba(148,163,184,0.18);
}

.footer-content {
  display: flex;
  flex-direction: column;      /* stack content */
  justify-content: center;     /* center vertically in the stack */
  align-items: center;         /* center horizontally */
  gap: var(--spacing-sm);
  text-align: center;
}

.footer-content p,
.footer-content a {
  color: var(--footer-text);
}

.footer-content a {
  text-decoration: none;
  opacity: 0.9;
  transition: var(--transition);
}

.footer-content a:hover {
  color: var(--primary);
  opacity: 1;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin: 0 auto;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.08);
  color: var(--footer-text);
  border: none;                /* remove transparent border box */
  border-radius: 50%;          /* keep circular shape */
  text-decoration: none;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* Keep footer readable in dark mode (don’t invert) */
@media (prefers-color-scheme: dark) {
  .site-footer {
    background: var(--footer-bg);
    color: var(--footer-text);
  }
  .footer-social a {
    background: rgba(255,255,255,0.08);
    color: var(--footer-text);
    border: none;              /* ensure no border in dark mode */
  }
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
}

/* Initial state for reveal-on-scroll (applied via JS) */
.will-animate {
  opacity: 0;
  transform: translateY(24px);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content,
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .hero-image {
    order: -1;
  }
  
  .hero-avatar {
    width: 270px;  /* was 250px */
    height: 270px; /* was 250px */
  }
  
  .avatar-img {
    width: 92%;
    height: 92%;
  }
  
  .avatar-code {
    font-size: 3rem;
  }
  
  /* CP: 2 columns on tablets */
  .cp-grid {
    grid-template-columns: repeat(2, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xs: 0.375rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .section-header {
    margin-bottom: var(--spacing-xl);
  }
  
  .hero {
    padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-xl);
    text-align: center;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-form {
    padding: var(--spacing-lg);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .hero-avatar {
    width: 300px;  /* was 200px */
    height: 300px; /* was 200px */
  }
  
  .avatar-code {
    font-size: 2.5rem;
  }
  
  /* CP: stack to 1 column on phones */
  .cp-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }
  
  .hero-social {
    justify-content: center;
  }
  
  /* Removed to keep tilted style on small screens */
  /* .about-card {
    transform: rotate(0deg);
  } */
  
  .contact-method {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.45s cubic-bezier(0.22, 1, 0.36, 1) forwards; /* was 0.6s ease-out */
}

/* Make card transforms feel buttery-smooth */
.project-card,
.about-card {
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1), box-shadow 300ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, box-shadow;
  backface-visibility: hidden;
  transform-style: preserve-3d;
  contain: paint; /* isolate painting to avoid layout jank */
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .will-animate {
    opacity: 1 !important;
    transform: none !important;
  }
  .project-card,
  .about-card {
    transform: none !important;             /* no tilt for users who prefer less motion */
  }
  .hero-name {
    animation: none !important;
    background-size: auto !important;
  }
  .hero-title {
    animation: none !important;
    width: auto !important;
    border-right: 0 !important;
    white-space: normal !important;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --border: #334155;
  }
  
  .site-header {
    background: rgba(15, 23, 42, 0.95);
  }
  
  .project-card,
  .skill-category,
  .contact-form,
  .stat {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
  }
  
  input,
  textarea {
    background: var(--bg-tertiary);
    border-color: var(--border);
    color: var(--text-primary);
  }
  
  /* Dark mode tweaks for scrolled header */
  .site-header.scrolled {
    background: rgba(15, 23, 42, 0.98);
    border-bottom-color: rgba(51, 65, 85, 0.9);
    box-shadow: 0 6px 18px rgba(0,0,0,0.35);
  }
}

/* Print styles */
@media print {
  .site-header,
  .nav-toggle,
  .back-to-top,
  .hero-social,
  .footer-social,
  .project-links {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  .section {
    page-break-inside: avoid;
    padding: 1rem 0;
  }
}

/* Competitive Programming */


.cp-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(240px, 1fr)); /* 4 in one line */
  gap: var(--spacing-lg);
}

.cp-card {
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-md); /* slightly smaller to fit */
  transition: var(--transition);
  position: relative;   /* contain glow */
  overflow: hidden;     /* contain glow */
}

/* Radial glow overlay for CP cards (same as skills/contact) */
.cp-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(500px circle at var(--px, 50%) var(--py, 50%),
      rgba(59,130,246,0.22), transparent 60%);
  filter: blur(12px);
  opacity: 0;
  transition: opacity 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* Existing: show the glow on hover */
.cp-card:hover::before {
  opacity: 1;
}

/* Slightly smaller icon to help fit */
.cp-header i {
  width: 44px;
  height: 44px;
  font-size: 1.1rem;
}

/* CP logos */
.cp-header .cp-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;            /* neutral bg for dark logos */
  padding: 2px;                 /* small inset to avoid cropping */
  flex: 0 0 auto;
}

/* Fallback icon (hidden until image fails) */
.cp-header .cp-logo-fallback {
  display: none;                /* shown via onerror handler */
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 1.1rem;
  flex: 0 0 auto;
}

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

/* Reserve space in header so the top-right icon doesn't overlap text */
.cp-header {
  padding-right: 56px; /* space for 44px icon + gap */
}

/* Place the visit icon at the top-right inside the card */
.cp-actions {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  display: inline-flex;
  z-index: 2;
}

/* Make project-style visit icon work on light cards */
.cp-actions .project-link-btn {
  width: 44px;
  height: 44px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* Dark mode for CP cards */
@media (prefers-color-scheme: dark) {
  .cp-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
  }
}


.cp-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.cp-stats span {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 0.25rem var(--spacing-xs);
  font-size: 0.85rem;
  font-weight: 500;
}

.cp-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Make project-style visit icon work on light cards */
.cp-actions .project-link-btn {
  width: 44px;
  height: 44px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* Dark mode for CP cards */
@media (prefers-color-scheme: dark) {
  .cp-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
  }
}

/* CP responsive overrides — keep these at the end so they beat the base rule */
@media (max-width: 1024px) {
  .cp-grid {
    grid-template-columns: repeat(2, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  .cp-grid {
    grid-template-columns: 1fr;
  }
}