/* ============================================================
   DARPAN RAIYANI PORTFOLIO — FUTURISTIC CSS
   ============================================================ */

/* ── Design Tokens ─────────────────────────────────────── */
:root {
  --bg:          #050510;
  --bg-alt:      #080820;
  --surface:     rgba(255,255,255,0.04);
  --surface-hover: rgba(255,255,255,0.08);
  --border:      rgba(255,255,255,0.08);
  --border-glow: rgba(0,245,255,0.3);

  --cyan:        #00f5ff;
  --cyan-dim:    rgba(0,245,255,0.15);
  --violet:      #7c3aed;
  --violet-dim:  rgba(124,58,237,0.15);
  --magenta:     #f0abfc;
  --magenta-dim: rgba(240,171,252,0.15);

  --text-primary:   #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted:     #475569;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-glow-cyan:    0 0 20px rgba(0,245,255,0.2), 0 0 60px rgba(0,245,255,0.08);
  --shadow-glow-violet:  0 0 20px rgba(124,58,237,0.2), 0 0 60px rgba(124,58,237,0.08);
  --shadow-card:         0 8px 32px rgba(0,0,0,0.4);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  cursor: default;
}

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

a:hover { color: var(--magenta); }

img {
  max-width: 100%;
  display: block;
}

ul { list-style: none; }

/* ── Three.js Canvas ───────────────────────────────────── */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── Loader ─────────────────────────────────────────────── */
#loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.loader-ring {
  width: 60px;
  height: 60px;
  border: 2px solid var(--border);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loader-text {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

.dots {
  display: inline-block;
  animation: dots 1.4s infinite;
}

@keyframes dots {
  0%, 20%  { content: '.'; }
  40%      { content: '..'; }
  60%,100% { content: '...'; }
}

/* ── Header / Nav ───────────────────────────────────────── */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background var(--transition), backdrop-filter var(--transition);
}

#site-header.scrolled {
  background: rgba(5,5,16,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.logo-bracket {
  color: var(--cyan);
  font-weight: 300;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--cyan);
  background: var(--cyan-dim);
}

.nav-link.nav-cta {
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  color: var(--bg) !important;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
}

.nav-link.nav-cta:hover {
  opacity: 0.9;
  box-shadow: var(--shadow-glow-cyan);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

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

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Section Shared ─────────────────────────────────────── */
section {
  position: relative;
  z-index: 1;
  padding: 6rem 0;
}

.alt-section {
  background: rgba(8,8,32,0.6);
  backdrop-filter: blur(4px);
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  margin-top: 1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

/* Glass Card */
.glass-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition), transform var(--transition);
}

.glass-card:hover {
  border-color: var(--border-glow);
  background: var(--surface-hover);
  box-shadow: var(--shadow-glow-cyan);
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--violet) 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,245,255,0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,245,255,0.4);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
}

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

/* ── HERO SECTION ───────────────────────────────────────── */
#hero {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(0,245,255,0.08);
  border: 1px solid rgba(0,245,255,0.2);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease 0.5s both;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  animation: fadeInDown 0.8s ease 0.6s both;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  background: linear-gradient(135deg, #fff 30%, var(--cyan) 70%, var(--violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  animation: fadeInDown 0.8s ease 0.7s both;
}

.hero-roles {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  min-height: 2rem;
  animation: fadeInDown 0.8s ease 0.8s both;
}

.role-prefix { color: var(--violet); }

.typewriter-text { color: var(--cyan); }

.cursor-blink {
  color: var(--cyan);
  animation: blink 1s step-end infinite;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-bio {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
  margin-bottom: 2.5rem;
  animation: fadeInDown 0.8s ease 0.9s both;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  animation: fadeInDown 0.8s ease 1s both;
}

.hero-socials {
  display: flex;
  gap: 0.75rem;
  animation: fadeInDown 0.8s ease 1.1s both;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
}

.social-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-3px);
}

/* ── Hero Visual (right side) ─────────────────────────── */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 500px;
  animation: fadeInRight 1s ease 0.5s both;
}

.profile-sphere {
  position: relative;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  z-index: 2;
}

.profile-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  border: 2px solid var(--border-glow);
  filter: brightness(0.95) saturate(1.1);
}

.sphere-glow {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,245,255,0.2) 0%, transparent 70%);
  filter: blur(15px);
  animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { transform: scale(1);   opacity: 0.8; }
  50%       { transform: scale(1.1); opacity: 1; }
}

.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border);
}

.ring-1 {
  width: 320px; height: 320px;
  border-color: rgba(0,245,255,0.15);
  animation: orbit 12s linear infinite;
}

.ring-2 {
  width: 420px; height: 420px;
  border-color: rgba(124,58,237,0.12);
  animation: orbit 20s linear infinite reverse;
}

.ring-3 {
  width: 520px; height: 520px;
  border-color: rgba(240,171,252,0.08);
  animation: orbit 30s linear infinite;
}

@keyframes orbit { to { transform: rotate(360deg); } }

.floating-tag {
  position: absolute;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
  white-space: nowrap;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.floating-tag i { color: var(--cyan); }

.tag-1 { top: 80px;  left: 30px;  animation: float 4s ease-in-out infinite; }
.tag-2 { top: 80px;  right: 30px; animation: float 4s ease-in-out 1s infinite; }
.tag-3 { bottom: 100px; left: 10px; animation: float 4s ease-in-out 0.5s infinite; }
.tag-4 { bottom: 100px; right: 10px; animation: float 4s ease-in-out 1.5s infinite; }

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

/* Scroll Hint */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  animation: fadeInDown 1s ease 1.5s both;
  grid-column: 1 / -1;
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

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

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── ABOUT SECTION ──────────────────────────────────────── */
#about { padding: 7rem 0; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 4rem;
  align-items: start;
}

.about-lead {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.highlight {
  color: var(--cyan);
  font-weight: 600;
}

.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.info-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.info-label i { color: var(--cyan); }

.info-value {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
}

.info-value a {
  color: var(--text-primary);
}

.info-value a:hover { color: var(--cyan); }

.status-open {
  color: #4ade80 !important;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.status-open::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 6px #4ade80;
  display: inline-block;
  animation: pulse 2s infinite;
}

.about-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* About stats cards */
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}

.stat-icon {
  font-size: 1.5rem;
  color: var(--cyan);
  margin-bottom: 0.75rem;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ── SKILLS SECTION ─────────────────────────────────────── */
#skills { padding: 7rem 0; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.skill-category {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition);
}

.skill-category:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
}

.skill-cat-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.skill-cat-title i { color: var(--cyan); }

.skill-bars { display: flex; flex-direction: column; gap: 1.25rem; }

.skill-bar-item {}

.skill-bar-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
}

.skill-bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 100px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 100px;
  background: linear-gradient(to right, var(--clr, var(--cyan)), rgba(255,255,255,0.5));
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px var(--clr, var(--cyan));
}

/* Tech pills */
.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.tech-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  transition: var(--transition);
  cursor: default;
}

.tech-pill:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
}

/* ── RESUME TIMELINE ────────────────────────────────────── */
#resume { padding: 7rem 0; }

.timeline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.timeline-col-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.timeline-col-title i { color: var(--cyan); }

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan), var(--violet), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}

.timeline-dot {
  position: absolute;
  left: -1.7rem;
  top: 1.5rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--dot-clr, var(--cyan));
  box-shadow: 0 0 12px var(--dot-clr, var(--cyan));
  z-index: 1;
}

.timeline-card {
  padding: 1.5rem;
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.timeline-role {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.timeline-company {
  font-size: 0.85rem;
  color: var(--violet);
  font-weight: 500;
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
}

.timeline-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.timeline-tags span {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  background: var(--violet-dim);
  border: 1px solid rgba(124,58,237,0.2);
  color: var(--magenta);
}

/* ── PROJECTS SECTION ───────────────────────────────────── */
#projects { padding: 7rem 0; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.project-card {
  padding: 1.75rem;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow-cyan), var(--shadow-card);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.project-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--cyan-dim), var(--violet-dim));
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--cyan);
}

.project-links {
  display: flex;
  gap: 0.5rem;
}

.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: var(--transition);
  text-decoration: none;
}

.project-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-tech span {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  background: var(--cyan-dim);
  border: 1px solid rgba(0,245,255,0.2);
  color: var(--cyan);
}

.projects-cta {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.projects-note {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Project card with image */
.project-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: #0a0a20;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-img {
  transform: scale(1.06);
}

.project-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 0.75rem;
  background: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent);
  display: flex;
  justify-content: flex-end;
}

.project-owner-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
}

.project-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.project-featured .project-img-wrap {
  height: 220px;
}

.project-featured {
  border-color: rgba(0,245,255,0.2);
}

/* Courses strip */
.courses-strip {
  margin-top: 4rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.courses-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  text-align: center;
  letter-spacing: 0.02em;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.course-badge {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.course-badge:hover {
  border-color: var(--border-glow);
  background: var(--surface-hover);
}

.course-badge i {
  font-size: 1.5rem;
  color: var(--cyan);
  margin-top: 0.1rem;
  flex-shrink: 0;
}

.course-badge strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.course-badge span {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ── ACHIEVEMENTS / CERTIFICATIONS ──────────────────────── */
#achievements { padding: 7rem 0; }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.cert-card {
  padding: 0;
  overflow: hidden;
  position: relative;
}

.cert-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.85rem;
  z-index: 2;
}

.cert-img-wrap {
  height: 180px;
  overflow: hidden;
  background: #0a0a20;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.cert-card:hover .cert-img {
  transform: scale(1.05);
}

.cert-info {
  padding: 1.5rem;
}

.cert-issuer {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.5rem;
}

.cert-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.cert-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.cert-link {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--cyan);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.cert-link:hover {
  color: var(--magenta);
  gap: 0.6rem;
}

/* ── SERVICES SECTION ───────────────────────────────────── */
#services { padding: 7rem 0; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow-violet), var(--shadow-card);
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--violet-dim);
  border: 1px solid rgba(124,58,237,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--violet);
  margin: 0 auto 1.25rem;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--violet);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-glow-violet);
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── CONTACT SECTION ────────────────────────────────────── */
#contact { padding: 7rem 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--cyan-dim);
  border: 1px solid rgba(0,245,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.2rem;
}

.contact-value {
  color: var(--text-primary);
  font-weight: 500;
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition);
}

.contact-value:hover { color: var(--cyan); }

.contact-socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

/* Contact Form */
.contact-form {
  padding: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.925rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,245,255,0.1);
}

.form-status {
  margin-top: 1rem;
  font-size: 0.875rem;
  min-height: 1.5rem;
}

.form-status.success { color: #4ade80; }
.form-status.error   { color: #f87171; }

/* ── FOOTER ─────────────────────────────────────────────── */
#site-footer {
  position: relative;
  z-index: 1;
  background: rgba(5,5,16,0.95);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text-primary);
}

.footer-tagline {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.heart { color: var(--magenta); }

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* ── Back to Top ────────────────────────────────────────── */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
  box-shadow: var(--shadow-glow-cyan);
}

/* ── Custom Scrollbar ───────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--cyan), var(--violet));
  border-radius: 100px;
}

/* ── Selection ──────────────────────────────────────────── */
::selection {
  background: rgba(0,245,255,0.2);
  color: var(--cyan);
}

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .skills-grid    { grid-template-columns: 1fr; }
  .projects-grid  { grid-template-columns: repeat(2, 1fr); }
  .cert-grid      { grid-template-columns: repeat(2, 1fr); }
  .services-grid  { grid-template-columns: repeat(2, 1fr); }
  .about-grid     { grid-template-columns: 1fr; }
  .about-stats    { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 900px) {
  #hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 7rem 2rem 4rem;
  }

  .hero-visual { display: none; }

  .hero-cta,
  .hero-socials { justify-content: center; }

  .hero-bio { margin-left: auto; margin-right: auto; }

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

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

  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 260px;
    height: 100dvh;
    background: rgba(5,5,16,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem 2rem;
    border-left: 1px solid var(--border);
    transition: right var(--transition);
    gap: 0.25rem;
  }

  .nav-links.open { right: 0; }

  .nav-link { width: 100%; padding: 0.75rem 1rem; border-radius: var(--radius-sm); }

  .about-info-grid { grid-template-columns: 1fr; }
  .about-stats     { grid-template-columns: 1fr 1fr; }

  .projects-grid  { grid-template-columns: 1fr; }
  .cert-grid      { grid-template-columns: 1fr; }
  .services-grid  { grid-template-columns: 1fr; }

  section { padding: 4rem 0; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .nav-container { padding: 1rem 1.25rem; }
  .section-container { padding: 0 1.25rem; }
}