/* ============================================================
   PORTFOLIO – style.css
   Author  : Sayeduzzman Emon
   Theme   : Dark space — glassmorphism — cyan accent
   Fonts   : Space Grotesk (display) · Inter (body)
============================================================ */

/* ============================================================
   1. CSS CUSTOM PROPERTIES (design tokens)
============================================================ */
:root {
  /* --- Core palette --- */
  --clr-bg:          #0a0e1a;   /* deep-space navy */
  --clr-bg-alt:      #0f1525;   /* slightly lighter sections */
  --clr-surface:     rgba(255,255,255,0.04);  /* glass card base */
  --clr-surface-hov: rgba(255,255,255,0.07);

  --clr-cyan:        #00d4ff;   /* primary accent */
  --clr-cyan-dim:    rgba(0, 212, 255, 0.15);
  --clr-cyan-glow:   rgba(0, 212, 255, 0.25);
  --clr-violet:      #7c3aed;   /* secondary accent */
  --clr-violet-dim:  rgba(124, 58, 237, 0.15);

  /* --- Typography --- */
  --clr-text:        #e8eaf0;   /* primary text */
  --clr-text-muted:  #7a8199;   /* subdued text */
  --clr-text-faint:  #3d4466;   /* very faint */

  /* --- Borders --- */
  --clr-border:      rgba(255,255,255,0.08);
  --clr-border-cyan: rgba(0, 212, 255, 0.30);

  /* --- Fonts --- */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* --- Spacing scale --- */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;

  /* --- Layout --- */
  --container-max: 1200px;
  --section-gap:   6rem;

  /* --- Radius --- */
  --radius-sm:  0.5rem;
  --radius-md:  0.875rem;
  --radius-lg:  1.25rem;
  --radius-full:9999px;

  /* --- Transition --- */
  --ease-out:  cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast:  150ms;
  --dur-base:  250ms;
  --dur-slow:  400ms;

  /* --- Glass blur --- */
  --glass-blur: blur(14px);
}

/* ============================================================
   LIGHT MODE VARIABLES (Warm & Energetic)
============================================================ */
[data-theme="light"] {
  --clr-bg:          #fdfbfc;   /* Soft warm off-white */
  --clr-bg-alt:      #ffffff;   /* Pure white sections */
  --clr-surface:     rgba(230, 126, 34, 0.04); /* Subtle warm card base */
  --clr-surface-hov: rgba(230, 126, 34, 0.08);

  /* Primary Accent: Energetic Orange/Terracotta */
  --clr-cyan:        #e67e22;   /* Vibrant orange replacing cyan */
  --clr-cyan-dim:    rgba(230, 126, 34, 0.12);
  --clr-cyan-glow:   rgba(230, 126, 34, 0.22);
  
  /* Secondary Accent: Warm Amber/Gold */
  --clr-violet:      #d35400;   /* Deep burnt orange/amber replacing violet */
  --clr-violet-dim:  rgba(211, 84, 0, 0.12);

  /* Typography: Rich Charcoal & Warm Slate */
  --clr-text:        #1e2530;   /* Deep rich dark text */
  --clr-text-muted:  #5c6470;   /* Warm muted gray */
  --clr-text-faint:  #949da9;   /* Faint warm gray */

  /* Borders & Dividers */
  --clr-border:      rgba(180, 140, 120, 0.15); /* Soft warm border */
  --clr-border-cyan: rgba(230, 126, 34, 0.30);
}

/* Theme Toggle Button Style */
.theme-toggle {
  color: var(--clr-text);
  margin-right: 1rem;
  display: flex;
  align-items: center;
  transition: color var(--dur-fast) var(--ease-out);
}
.theme-toggle:hover {
  color: var(--clr-cyan);
}

/* ============================================================
   2. RESET & BASE
============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family:      var(--font-body);
  background-color: var(--clr-bg);
  color:            var(--clr-text);
  line-height:      1.65;
  overflow-x:       hidden;
  -webkit-font-smoothing: antialiased;
}

/* Accessible focus ring */
:focus-visible {
  outline: 2px solid var(--clr-cyan);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

/* ============================================================
   3. UTILITY CLASSES
============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--section-gap) 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--clr-cyan);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.15;
}

.section-subtitle {
  margin-top: var(--space-md);
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.accent { color: var(--clr-cyan); }

/* Glass card */
.glass-card {
  background:   var(--clr-surface);
  border:       1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: var(--space-xl);
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

.glass-card:hover {
  background:    var(--clr-surface-hov);
  border-color:  var(--clr-border-cyan);
  transform:     translateY(-3px);
}

/* ============================================================
   4. BUTTONS
============================================================ */
.btn {
  display:        inline-flex;
  align-items:    center;
  gap:            var(--space-sm);
  padding:        0.7rem 1.5rem;
  border-radius:  var(--radius-full);
  font-family:    var(--font-display);
  font-weight:    600;
  font-size:      0.9rem;
  letter-spacing: 0.02em;
  transition:     all var(--dur-base) var(--ease-out);
  white-space:    nowrap;
}

.btn svg { width: 1rem; height: 1rem; flex-shrink: 0; }

.btn-primary {
  background:  var(--clr-cyan);
  color:       var(--clr-bg);
  box-shadow:  0 0 20px var(--clr-cyan-glow);
}
.btn-primary:hover {
  background:  #33ddff;
  box-shadow:  0 0 32px rgba(0,212,255,0.45);
  transform:   translateY(-2px);
}

.btn-secondary {
  background:  transparent;
  color:       var(--clr-text);
  border:      1.5px solid var(--clr-border-cyan);
}
.btn-secondary:hover {
  background:  var(--clr-cyan-dim);
  border-color:var(--clr-cyan);
  transform:   translateY(-2px);
}

.btn-ghost {
  background:  transparent;
  color:       var(--clr-text-muted);
  border:      1.5px solid var(--clr-border);
}
.btn-ghost:hover {
  color:       var(--clr-text);
  border-color:var(--clr-border-cyan);
  transform:   translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   5. NAVBAR
============================================================ */
.navbar {
  position:   fixed;
  top:        0;
  left:       0;
  right:      0;
  z-index:    1000;
  padding:    1rem 0;
  transition: background var(--dur-slow) var(--ease-out),
              backdrop-filter var(--dur-slow) var(--ease-out),
              box-shadow var(--dur-slow) var(--ease-out);
}

/* Scrolled state — added by JS */
.navbar.scrolled {
  background: var(--clr-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  box-shadow: 0 10px 30px -10px rgba(0, 212, 255, 0.5);
  padding: 0.8rem 0;
}

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

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size:   1.3rem;
  color:       var(--clr-text);
  letter-spacing: -0.02em;
}
.logo-bracket { color: var(--clr-cyan); }

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

.nav-link {
  font-family: var(--font-display);
  font-size:   0.875rem;
  font-weight: 500;
  color:       var(--clr-text-muted);
  transition:  color var(--dur-fast) var(--ease-out);
  position:    relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--clr-cyan);
  transition: width var(--dur-base) var(--ease-out);
}
.nav-link:hover,
.nav-link.active {
  color: var(--clr-text);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display:        none;
  flex-direction: column;
  gap:            5px;
  padding:        4px;
}
.bar {
  display:          block;
  width:            22px;
  height:           2px;
  background:       var(--clr-text);
  border-radius:    2px;
  transition:       all var(--dur-base) var(--ease-out);
}
.hamburger.open .bar:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open .bar:nth-child(2) { opacity: 0; }
.hamburger.open .bar:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   6. HERO SECTION
============================================================ */
.hero {
  position:   relative;
  min-height: 100vh;
  display:    flex;
  align-items:center;
  overflow:   hidden;
  padding:    7rem 0 4rem;
}

/* Animated grid pattern */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--clr-text-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--clr-text-faint) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.25;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

/* Glowing orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.orb-1 {
  width: 500px; height: 500px;
  background: var(--clr-cyan-dim);
  top: -150px; right: -100px;
  animation: orbFloat 8s ease-in-out infinite;
}
.orb-2 {
  width: 350px; height: 350px;
  background: var(--clr-violet-dim);
  bottom: -80px; left: -80px;
  animation: orbFloat 10s ease-in-out infinite reverse;
}
.orb-3 {
  width: 250px; height: 250px;
  background: rgba(0,212,255,0.06);
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  animation: orbFloat 12s ease-in-out infinite 2s;
}

@keyframes orbFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-30px) scale(1.05); }
}

.hero-container {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin:   0 auto;
  padding:  0 var(--space-xl);
  display:  grid;
  grid-template-columns: 1fr 1fr;
  gap:      var(--space-3xl);
  align-items: center;
}

/* --- Hero text --- */
.hero-eyebrow {
  font-family: 'Space Grotesk', monospace;
  font-size:   0.85rem;
  color:       var(--clr-cyan);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.2s forwards;
}

.hero-name {
  font-family: var(--font-display);
  font-size:   clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color:       var(--clr-text);
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.35s forwards;
}
.name-accent {
  color: var(--clr-cyan);
  text-shadow: 0 0 40px var(--clr-cyan-glow);
}

/* Typewriter line */
.hero-role {
  font-family: 'Space Grotesk', monospace;
  font-size:   1.15rem;
  color:       var(--clr-text-muted);
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.5s forwards;
}
.role-prefix { color: var(--clr-violet); font-weight: 600; }
.typewriter  { color: var(--clr-text); }
.cursor {
  display: inline-block;
  color:   var(--clr-cyan);
  animation: blink 1s step-end infinite;
  margin-left: 1px;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-summary {
  font-size:   1rem;
  color:       var(--clr-text-muted);
  max-width:   480px;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.65s forwards;
}

.hero-cta {
  display:   flex;
  flex-wrap: wrap;
  gap:       var(--space-md);
  margin-bottom: var(--space-2xl);
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.8s forwards;
}

/* Quick stats row */
.hero-stats {
  display:     flex;
  align-items: center;
  gap:         var(--space-xl);
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.95s forwards;
}
.stat { display: flex; flex-direction: column; }
.stat-number {
  font-family: var(--font-display);
  font-size:   1.75rem;
  font-weight: 700;
  color:       var(--clr-cyan);
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  color:     var(--clr-text-muted);
  margin-top: 2px;
}
.stat-divider {
  width:  1px;
  height: 2.5rem;
  background: var(--clr-border);
}

/* --- Hero image --- */
.hero-image-wrap {
  position: relative;
  display:  flex;
  justify-content: center;
  align-items:     center;
  opacity: 0;
  animation: fadeIn 0.8s var(--ease-out) 0.4s forwards;
}

.hero-image-ring {
  position:      absolute;
  width:         360px;
  height:        360px;
  border-radius: 50%;
  border:        1.5px solid var(--clr-border-cyan);
  animation:     spin 20s linear infinite;
}
.hero-image-ring::before {
  content:    '';
  position:   absolute;
  top: -4px; left: 50%;
  transform:  translateX(-50%);
  width:      8px;
  height:     8px;
  background: var(--clr-cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--clr-cyan);
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.hero-image-container {
  position:      relative;
  width:         300px;
  height:        300px;
  border-radius: 50%;
  overflow:      visible;
}

.hero-avatar {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  object-fit: contain;
  border:        3px solid var(--clr-cyan);
  box-shadow:    0 0 60px var(--clr-cyan-glow);
}

/* Floating tech badges */
.tech-badge {
  position:      absolute;
  background:    rgba(10, 14, 26, 0.9);
  border:        1px solid var(--clr-border-cyan);
  border-radius: var(--radius-full);
  padding:       0.35rem 0.85rem;
  font-family:   var(--font-display);
  font-size:     0.75rem;
  font-weight:   600;
  color:         var(--clr-cyan);
  backdrop-filter: blur(8px);
  box-shadow:    0 4px 20px rgba(0,0,0,0.4);
  white-space:   nowrap;
}
.badge-react  { top:  10%; left:  -30px; animation: badgeFloat 4s ease-in-out infinite; }
.badge-next   { top:  60%; right: -40px; animation: badgeFloat 4s ease-in-out infinite 1.5s; }
.badge-laravel{ bottom: 5%; left:  10%;  animation: badgeFloat 4s ease-in-out infinite 0.7s; }

@keyframes badgeFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

/* Scroll indicator */
.scroll-indicator {
  position:      absolute;
  bottom:        2rem;
  left:          50%;
  transform:     translateX(-50%);
  display:       flex;
  flex-direction:column;
  align-items:   center;
  gap:           6px;
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) 1.5s forwards;
}
.scroll-dot {
  width:            28px;
  height:           44px;
  border:           2px solid var(--clr-border-cyan);
  border-radius:    14px;
  position:         relative;
}
.scroll-dot::after {
  content:    '';
  position:   absolute;
  top:        6px;
  left:       50%;
  transform:  translateX(-50%);
  width:      5px;
  height:     5px;
  background: var(--clr-cyan);
  border-radius: 50%;
  animation:  scrollBob 1.8s ease-in-out infinite;
}
@keyframes scrollBob {
  0%, 100% { top: 6px; opacity: 1; }
  80%       { top: 20px; opacity: 0; }
}

/* ============================================================
   7. ABOUT SECTION
============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-bio h3,
.about-stack h3 {
  font-family:   var(--font-display);
  font-size:     1.25rem;
  font-weight:   600;
  margin-bottom: var(--space-lg);
  color:         var(--clr-text);
}

.about-bio p {
  color:         var(--clr-text-muted);
  margin-bottom: var(--space-md);
  line-height:   1.75;
}

.about-details {
  margin-top:    var(--space-xl);
  display:       grid;
  grid-template-columns: 1fr 1fr;
  gap:           var(--space-md);
  border-top:    1px solid var(--clr-border);
  padding-top:   var(--space-lg);
}

.detail-item { display: flex; flex-direction: column; gap: 4px; }
.detail-label {
  font-size:  0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color:      var(--clr-text-faint);
}
.detail-value { font-size: 0.875rem; color: var(--clr-text-muted); }
.detail-link:hover { color: var(--clr-cyan); }
.available-badge {
  display: inline-block;
  color:   #22d3a5;
  font-weight: 600;
}

/* Tech stack */
.stack-grid { display: flex; flex-direction: column; gap: var(--space-xl); }
.stack-group {}
.stack-category {
  font-size:     0.72rem;
  text-transform:uppercase;
  letter-spacing:0.12em;
  color:         var(--clr-text-faint);
  margin-bottom: var(--space-sm);
}
.stack-icons {
  display:        flex;
  flex-wrap:      wrap;
  gap:            var(--space-md);
}

.stack-icon-item {
  display:        flex;
  flex-direction: column;
  align-items:    center;
  gap:            4px;
  font-size:      0.68rem;
  color:          var(--clr-text-muted);
  transition:     color var(--dur-fast) var(--ease-out);
}
.stack-icon-item i {
  font-size: 1.75rem;
  transition: transform var(--dur-base) var(--ease-out);
}
.stack-icon-item:hover i { transform: translateY(-3px); }
.stack-icon-item:hover   { color: var(--clr-text); }

/* ============================================================
   8. PROJECTS SECTION
============================================================ */
.filter-bar {
  display:         flex;
  justify-content: center;
  gap:             var(--space-sm);
  flex-wrap:       wrap;
  margin-bottom:   var(--space-2xl);
}

.filter-btn {
  padding:       0.5rem 1.25rem;
  border-radius: var(--radius-full);
  border:        1.5px solid var(--clr-border);
  font-family:   var(--font-display);
  font-size:     0.85rem;
  font-weight:   500;
  color:         var(--clr-text-muted);
  background:    transparent;
  transition:    all var(--dur-base) var(--ease-out);
}
.filter-btn:hover,
.filter-btn.active {
  color:        var(--clr-bg);
  background:   var(--clr-cyan);
  border-color: var(--clr-cyan);
  box-shadow:   0 0 20px var(--clr-cyan-glow);
}

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

/* Project card */
.project-card {
  background:    var(--clr-surface);
  border:        1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow:      hidden;
  transition:    transform var(--dur-base) var(--ease-out),
                 border-color var(--dur-base) var(--ease-out),
                 box-shadow var(--dur-base) var(--ease-out);
  display:       flex;
  flex-direction:column;
  /* Filter animation */
  animation:     cardAppear 0.4s var(--ease-out) both;
}
.project-card:hover {
  transform:    translateY(-6px);
  border-color: var(--clr-border-cyan);
  box-shadow:   0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px var(--clr-cyan-dim);
}

@keyframes cardAppear {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* Thumbnail */
.project-thumb {
  position:   relative;
  height:     180px;
  overflow:   hidden;
  background: var(--clr-bg);
}
.project-thumb-bg {
  width:    100%;
  height:   100%;
  display:  flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  transition: transform var(--dur-slow) var(--ease-out);
}
.project-card:hover .project-thumb-bg { transform: scale(1.08); }

.project-category-tag {
  position:      absolute;
  top:           var(--space-md);
  right:         var(--space-md);
  background:    rgba(0, 212, 255, 0.15);
  border:        1px solid var(--clr-border-cyan);
  color:         var(--clr-cyan);
  font-size:     0.68rem;
  font-weight:   600;
  letter-spacing:0.08em;
  text-transform:uppercase;
  padding:       0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

/* Card content */
.project-content {
  padding:        var(--space-lg);
  display:        flex;
  flex-direction: column;
  flex:           1;
}
.project-title {
  font-family:   var(--font-display);
  font-size:     1.05rem;
  font-weight:   600;
  color:         var(--clr-text);
  margin-bottom: var(--space-sm);
}
.project-desc {
  font-size:     0.875rem;
  color:         var(--clr-text-muted);
  line-height:   1.65;
  margin-bottom: var(--space-md);
  flex: 1;
}
.project-tags {
  display:   flex;
  flex-wrap: wrap;
  gap:       var(--space-xs);
  margin-bottom: var(--space-lg);
}
.tag {
  background:    rgba(124, 58, 237, 0.12);
  border:        1px solid rgba(124, 58, 237, 0.25);
  color:         #a78bfa;
  font-size:     0.7rem;
  font-weight:   500;
  padding:       0.2rem 0.55rem;
  border-radius: var(--radius-full);
}
.project-links {
  display:     flex;
  gap:         var(--space-sm);
  margin-top:  auto;
}
.project-link {
  flex:            1;
  display:         flex;
  align-items:     center;
  justify-content: center;
  gap:             5px;
  padding:         0.5rem;
  border-radius:   var(--radius-sm);
  font-size:       0.8rem;
  font-weight:     500;
  border:          1px solid var(--clr-border);
  color:           var(--clr-text-muted);
  transition:      all var(--dur-fast) var(--ease-out);
}
.project-link svg { width: 0.9rem; height: 0.9rem; }
.project-link:hover {
  color:        var(--clr-cyan);
  border-color: var(--clr-border-cyan);
  background:   var(--clr-cyan-dim);
}
.project-link.primary-link {
  background:   var(--clr-cyan-dim);
  border-color: var(--clr-border-cyan);
  color:        var(--clr-cyan);
}
.project-link.primary-link:hover {
  background: var(--clr-cyan);
  color:      var(--clr-bg);
}

/* ============================================================
   9. SKILLS SECTION
============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-xl);
}

.skill-card-header {
  display:     flex;
  align-items: center;
  gap:         var(--space-sm);
  margin-bottom: var(--space-lg);
}
.skill-card-header h3 {
  font-family: var(--font-display);
  font-size:   1.1rem;
  font-weight: 600;
}
.skill-icon { font-size: 1.3rem; }

/* Skill bar */
.skill-bar-wrap { margin-bottom: var(--space-md); }
.skill-bar-header {
  display:         flex;
  justify-content: space-between;
  margin-bottom:   6px;
}
.skill-name {
  font-size:  0.85rem;
  color:      var(--clr-text);
  font-weight:500;
}
.skill-pct {
  font-size:   0.8rem;
  color:       var(--clr-cyan);
  font-weight: 600;
  font-family: var(--font-display);
}
.skill-track {
  height:        6px;
  background:    rgba(255,255,255,0.06);
  border-radius: var(--radius-full);
  overflow:      hidden;
}
.skill-fill {
  height:        100%;
  border-radius: var(--radius-full);
  background:    linear-gradient(90deg, var(--clr-violet), var(--clr-cyan));
  width:         0;   /* animated to data-pct by JS */
  transition:    width 1s var(--ease-out);
  box-shadow:    0 0 8px var(--clr-cyan-glow);
}

/* ============================================================
   10. CERTIFICATES SECTION
============================================================ */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.cert-card {
  cursor:         pointer;
  background:     var(--clr-surface);
  border:         1px solid var(--clr-border);
  border-radius:  var(--radius-lg);
  overflow:       hidden;
  transition:     transform var(--dur-base) var(--ease-out),
                  border-color var(--dur-base) var(--ease-out),
                  box-shadow var(--dur-base) var(--ease-out);
}
.cert-card:hover {
  transform:    translateY(-5px);
  border-color: var(--clr-border-cyan);
  box-shadow:   0 12px 40px rgba(0,0,0,0.3);
}

.cert-thumb {
  height:     160px;
  background: linear-gradient(135deg, var(--clr-violet-dim), var(--clr-cyan-dim));
  display:    flex;
  align-items:center;
  justify-content:center;
  font-size:  3rem;
  position:   relative;
  overflow:   hidden;
}
.cert-thumb::after {
  content:  '';
  position: absolute;
  inset:    0;
  background: linear-gradient(to bottom, transparent 50%, rgba(10,14,26,0.6));
}

.cert-info {
  padding: var(--space-lg);
}
.cert-org {
  font-size:     0.72rem;
  text-transform:uppercase;
  letter-spacing:0.1em;
  color:         var(--clr-cyan);
  margin-bottom: var(--space-xs);
}
.cert-title {
  font-family:   var(--font-display);
  font-size:     0.95rem;
  font-weight:   600;
  color:         var(--clr-text);
  margin-bottom: var(--space-xs);
  line-height:   1.3;
}
.cert-course {
  font-size: 0.8rem;
  color:     var(--clr-text-muted);
}
.cert-date {
  margin-top: var(--space-sm);
  font-size:  0.72rem;
  color:      var(--clr-text-faint);
}

/* -------- Modal -------- */
.modal-overlay {
  position:         fixed;
  inset:            0;
  z-index:          2000;
  background:       rgba(0,0,0,0.7);
  display:          flex;
  align-items:      center;
  justify-content:  center;
  padding:          var(--space-xl);
  backdrop-filter:  blur(6px);
  opacity:          0;
  transition:       opacity var(--dur-base) var(--ease-out);
}
.modal-overlay.open { opacity: 1; }
.modal-overlay[hidden] { display: none; }

.modal-container {
  background:    rgba(10, 14, 26, 0.95);
  border:        1px solid var(--clr-border-cyan);
  border-radius: var(--radius-lg);
  max-width:     680px;
  width:         100%;
  max-height:    90vh;
  overflow-y:    auto;
  position:      relative;
  padding:       var(--space-xl);
  transform:     scale(0.9) translateY(20px);
  transition:    transform var(--dur-slow) var(--ease-out);
}
.modal-overlay.open .modal-container {
  transform: scale(1) translateY(0);
}

.modal-close {
  position:      absolute;
  top:           var(--space-md);
  right:         var(--space-md);
  width:         36px;
  height:        36px;
  display:       flex;
  align-items:   center;
  justify-content:center;
  border-radius: 50%;
  border:        1px solid var(--clr-border);
  color:         var(--clr-text-muted);
  transition:    all var(--dur-fast) var(--ease-out);
}
.modal-close svg { width: 1rem; height: 1rem; }
.modal-close:hover { color: var(--clr-text); border-color: var(--clr-cyan); background: var(--clr-cyan-dim); }

.modal-image-wrap {
  border-radius: var(--radius-md);
  overflow:      hidden;
  margin-bottom: var(--space-lg);
  background:    linear-gradient(135deg, var(--clr-violet-dim), var(--clr-cyan-dim));
  height:        200px;
  display:       flex;
  align-items:   center;
  justify-content:center;
  font-size:     4rem;
}
.modal-image { width: 100%; height: 100%; object-fit: cover; }

.modal-org {
  font-size:     0.75rem;
  text-transform:uppercase;
  letter-spacing:0.12em;
  color:         var(--clr-cyan);
  margin-bottom: var(--space-sm);
}
.modal-title {
  font-family:   var(--font-display);
  font-size:     1.35rem;
  font-weight:   700;
  margin-bottom: var(--space-sm);
}
.modal-course {
  color:         var(--clr-text-muted);
  margin-bottom: var(--space-sm);
}
.modal-date {
  font-size:     0.8rem;
  color:         var(--clr-text-faint);
  margin-bottom: var(--space-lg);
}
.modal-link { display: inline-flex; }

/* ============================================================
   11. EXPERIENCE — Timeline
============================================================ */
.timeline {
  position: relative;
  padding-left: 2.5rem;
  max-width: 780px;
  margin: 0 auto;
}
.timeline::before {
  content:    '';
  position:   absolute;
  left:       0;
  top:        0;
  bottom:     0;
  width:      1.5px;
  background: linear-gradient(to bottom, var(--clr-cyan), var(--clr-violet), transparent);
}

.timeline-item {
  position:      relative;
  margin-bottom: var(--space-2xl);
  padding-left:  var(--space-xl);
}
.timeline-item:last-child { margin-bottom: 0; }

/* Dot */
.timeline-item::before {
  content:       '';
  position:      absolute;
  left:          -2.5rem;
  top:           0.5rem;
  width:         12px;
  height:        12px;
  border-radius: 50%;
  background:    var(--clr-cyan);
  border:        2px solid var(--clr-bg);
  box-shadow:    0 0 12px var(--clr-cyan-glow);
  transform:     translateX(50%);
}

.timeline-card {
  background:    var(--clr-surface);
  border:        1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding:       var(--space-xl);
  transition:    border-color var(--dur-base) var(--ease-out);
}
.timeline-card:hover { border-color: var(--clr-border-cyan); }

.timeline-header {
  display:         flex;
  justify-content: space-between;
  flex-wrap:       wrap;
  align-items:     flex-start;
  gap:             var(--space-sm);
  margin-bottom:   var(--space-md);
}
.timeline-company {
  font-family: var(--font-display);
  font-size:   1.1rem;
  font-weight: 700;
  color:       var(--clr-text);
}
.timeline-position {
  font-size:   0.9rem;
  color:       var(--clr-cyan);
  font-weight: 500;
}
.timeline-duration {
  font-size:     0.78rem;
  color:         var(--clr-text-faint);
  background:    rgba(255,255,255,0.04);
  border:        1px solid var(--clr-border);
  padding:       0.2rem 0.65rem;
  border-radius: var(--radius-full);
  white-space:   nowrap;
}

.timeline-tasks {
  list-style: none;
  display:    flex;
  flex-direction: column;
  gap:        var(--space-sm);
  margin-top: var(--space-sm);
}
.timeline-tasks li {
  position:    relative;
  padding-left:1.2rem;
  font-size:   0.875rem;
  color:       var(--clr-text-muted);
  line-height: 1.6;
}
.timeline-tasks li::before {
  content:    '▸';
  position:   absolute;
  left:       0;
  color:      var(--clr-violet);
}

/* ============================================================
   12. EDUCATION SECTION
============================================================ */
.education-grid {
  display:   grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap:       var(--space-xl);
  max-width: 820px;
  margin:    0 auto;
}

.edu-card {
  display:    flex;
  gap:        var(--space-lg);
  align-items:flex-start;
}
.edu-icon {
  width:          56px;
  height:         56px;
  flex-shrink:    0;
  background:     var(--clr-cyan-dim);
  border:         1px solid var(--clr-border-cyan);
  border-radius:  var(--radius-md);
  display:        flex;
  align-items:    center;
  justify-content:center;
  font-size:      1.5rem;
}
.edu-degree {
  font-family:   var(--font-display);
  font-size:     1rem;
  font-weight:   700;
  color:         var(--clr-text);
  margin-bottom: var(--space-xs);
}
.edu-institution {
  font-size:   0.875rem;
  color:       var(--clr-cyan);
  font-weight: 500;
  margin-bottom:var(--space-xs);
}
.edu-meta {
  display:  flex;
  gap:      var(--space-md);
  flex-wrap:wrap;
}
.edu-year, .edu-cgpa {
  font-size:     0.78rem;
  color:         var(--clr-text-faint);
  background:    rgba(255,255,255,0.04);
  border:        1px solid var(--clr-border);
  padding:       0.18rem 0.6rem;
  border-radius: var(--radius-full);
}
.edu-cgpa { color: var(--clr-cyan); border-color: var(--clr-border-cyan); }
.edu-note {
  margin-top: var(--space-md);
  font-size:  0.82rem;
  color:      var(--clr-text-muted);
  line-height:1.6;
  border-left:2px solid var(--clr-cyan);
  padding-left:var(--space-md);
}

/* ============================================================
   13. CONTACT SECTION
============================================================ */
.contact-grid {
  display:   grid;
  grid-template-columns: 1fr 1.5fr;
  gap:       var(--space-xl);
  align-items:start;
}

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

.contact-item {
  display:     flex;
  align-items: center;
  gap:         var(--space-md);
  padding:     var(--space-md);
  border-radius: var(--radius-md);
  border:      1px solid var(--clr-border);
  transition:  all var(--dur-fast) var(--ease-out);
  color:       inherit;
}
.contact-item:not(.no-link):hover {
  border-color: var(--clr-border-cyan);
  background:   var(--clr-cyan-dim);
}
.contact-icon {
  width:           40px;
  height:          40px;
  flex-shrink:     0;
  background:      var(--clr-cyan-dim);
  border:          1px solid var(--clr-border-cyan);
  border-radius:   var(--radius-sm);
  display:         flex;
  align-items:     center;
  justify-content: center;
  color:           var(--clr-cyan);
}
.contact-icon svg { width: 1rem; height: 1rem; }
.contact-text { display: flex; flex-direction: column; }
.contact-label {
  font-size:     0.7rem;
  text-transform:uppercase;
  letter-spacing:0.1em;
  color:         var(--clr-text-faint);
}
.contact-value { font-size: 0.875rem; color: var(--clr-text-muted); }

/* Form */
.contact-form-card h3 {
  font-family:   var(--font-display);
  font-size:     1.2rem;
  font-weight:   600;
  margin-bottom: var(--space-xl);
}

.contact-form { display: flex; flex-direction: column; gap: var(--space-lg); }
.form-row     { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
.form-group   { display: flex; flex-direction: column; gap: 6px; }

.form-group label {
  font-size:   0.8rem;
  font-weight: 500;
  color:       var(--clr-text-muted);
  text-transform:uppercase;
  letter-spacing:0.06em;
}

.form-group input,
.form-group textarea {
  background:    rgba(255,255,255,0.04);
  border:        1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding:       0.75rem 1rem;
  color:         var(--clr-text);
  font-family:   var(--font-body);
  font-size:     0.9rem;
  transition:    border-color var(--dur-fast) var(--ease-out),
                 box-shadow var(--dur-fast) var(--ease-out);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-cyan);
  box-shadow:   0 0 0 3px var(--clr-cyan-dim);
  outline:      none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--clr-text-faint); }

.form-error { font-size: 0.75rem; color: #f87171; min-height: 1em; }
.form-success {
  text-align: center;
  color:      #22d3a5;
  font-size:  0.9rem;
  padding:    var(--space-sm);
}

/* ============================================================
   14. FOOTER
============================================================ */
.footer {
  background:  var(--clr-bg-alt);
  border-top:  1px solid var(--clr-border);
  padding:     var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display:   grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap:       var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  color:      var(--clr-text-muted);
  font-size:  0.875rem;
  margin-top: var(--space-md);
  max-width:  280px;
  line-height:1.7;
}

.footer-social {
  display:     flex;
  gap:         var(--space-md);
  margin-top:  var(--space-lg);
}
.footer-social a {
  width:           38px;
  height:          38px;
  display:         flex;
  align-items:     center;
  justify-content: center;
  border:          1px solid var(--clr-border);
  border-radius:   var(--radius-sm);
  color:           var(--clr-text-muted);
  transition:      all var(--dur-fast) var(--ease-out);
}
.footer-social a svg { width: 1rem; height: 1rem; }
.footer-social a:hover { color: var(--clr-cyan); border-color: var(--clr-border-cyan); background: var(--clr-cyan-dim); }

.footer-nav h4 {
  font-family:   var(--font-display);
  font-size:     0.875rem;
  font-weight:   600;
  color:         var(--clr-text);
  margin-bottom: var(--space-lg);
  text-transform:uppercase;
  letter-spacing:0.08em;
}
.footer-nav ul { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer-nav a {
  font-size:  0.875rem;
  color:      var(--clr-text-muted);
  transition: color var(--dur-fast) var(--ease-out);
}
.footer-nav a:hover { color: var(--clr-cyan); }

.footer-bottom {
  border-top:      1px solid var(--clr-border);
  padding-top:     var(--space-lg);
  display:         flex;
  justify-content: space-between;
  align-items:     center;
  gap:             var(--space-md);
  flex-wrap:       wrap;
}
.footer-bottom p { font-size: 0.8rem; color: var(--clr-text-faint); }

/* ============================================================
   15. BACK TO TOP
============================================================ */
.back-to-top {
  position:      fixed;
  bottom:        2rem;
  right:         2rem;
  width:         44px;
  height:        44px;
  background:    var(--clr-cyan);
  color:         var(--clr-bg);
  border-radius: 50%;
  display:       flex;
  align-items:   center;
  justify-content:center;
  box-shadow:    0 4px 20px var(--clr-cyan-glow);
  transition:    all var(--dur-base) var(--ease-out);
  z-index:       900;
  opacity:       0;
  transform:     translateY(10px);
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top[hidden] { display: none; }
.back-to-top svg { width: 1.1rem; height: 1.1rem; }
.back-to-top:hover { background: #33ddff; transform: translateY(-3px); }

/* ============================================================
   16. REVEAL ANIMATIONS (Intersection Observer)
============================================================ */
.reveal {
  opacity:    0;
  transform:  translateY(24px);
  transition: opacity 0.55s var(--ease-out),
              transform 0.55s var(--ease-out);
}
.reveal.visible {
  opacity:   1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Fade keyframes for hero */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ============================================================
   17. SCROLLBAR
============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-text-faint); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-cyan); }

/* ============================================================
   18. RESPONSIVE — Tablet (≤ 900px)
============================================================ */
@media (max-width: 900px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align:            center;
    gap:                   var(--space-2xl);
  }

  .hero-image-wrap {
    order:      -1;         /* image above text on mobile */
  }

  .hero-cta    { justify-content: center; }
  .hero-stats  { justify-content: center; }
  .hero-summary { margin-left: auto; margin-right: auto; }

  .about-grid  { grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   19. RESPONSIVE — Mobile (≤ 600px)
============================================================ */
@media (max-width: 600px) {
  :root { --section-gap: 4rem; }

  /* Nav */
  .hamburger { display: flex; }

  .nav-links {
    position:         fixed;
    top:              0;
    right:            0;
    bottom:           0;
    width:            min(75vw, 280px);
    background:       rgba(10,14,26,0.97);
    backdrop-filter:  blur(20px);
    flex-direction:   column;
    justify-content:  center;
    align-items:      flex-start;
    gap:              var(--space-lg);
    padding:          var(--space-2xl) var(--space-xl);
    transform:        translateX(100%);
    transition:       transform var(--dur-slow) var(--ease-out);
    border-left:      1px solid var(--clr-border);
    z-index:          999;
  }
  .nav-links.open      { transform: translateX(0); }
  .nav-link            { font-size: 1.1rem; }

  .hero-avatar         { width: 220px; height: 220px; }
  .hero-image-ring     { width: 260px; height: 260px; }
  .hero-image-container{ width: 220px; height: 220px; }
  .hero-cta            { flex-direction: column; align-items: center; }
  .hero-stats          { gap: var(--space-lg); }

  .form-row            { grid-template-columns: 1fr; }
  .footer-grid         { grid-template-columns: 1fr; }
  .footer-bottom       { flex-direction: column; text-align: center; }

  .projects-grid       { grid-template-columns: 1fr; }
  .certs-grid          { grid-template-columns: 1fr; }
  .skills-grid         { grid-template-columns: 1fr; }
  .education-grid      { grid-template-columns: 1fr; }

  .badge-react, .badge-next, .badge-laravel { display: none; }

  .back-to-top { bottom: 1.25rem; right: 1.25rem; }

  .container { padding: 0 var(--space-lg); }
}
.skill-bar-wrap {
  margin-bottom: 1.25rem;
}

.skill-bar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.skill-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text);
}

.skill-pct {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--clr-cyan);
}

.skill-track {
  height: 8px;
  width: 100%;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    #7c3aed,
    #00d4ff
  );
  box-shadow: 0 0 20px rgba(0,212,255,0.4);
  transition: width 1.2s ease;
}
.certs-grid {
  display: grid;
  grid-template-columns: repeat(
    auto-fit,
    minmax(300px, 1fr)
  );
  gap: 1.5rem;
}

.cert-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  overflow: hidden;
  transition: 0.35s ease;
  backdrop-filter: blur(15px);
}

.cert-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0,212,255,0.4);
  box-shadow: 0 15px 40px rgba(0,0,0,0.35);
}

.cert-thumb {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;

  background:
    linear-gradient(
      135deg,
      rgba(124,58,237,0.25),
      rgba(0,212,255,0.15)
    );
}

.cert-info {
  padding: 1.5rem;
}

.cert-org {
  color: var(--clr-cyan);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.cert-title {
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.cert-date {
  color: var(--clr-text-muted);
  margin-bottom: 1.25rem;
}

.cert-btn {
  display: inline-block;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  text-decoration: none;
  background: var(--clr-cyan);
  color: #000;
  font-weight: 600;
  transition: 0.3s;
}

.cert-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(0,212,255,0.4);
}