/* ═══════════════════════════════════════════
   CSS CUSTOM PROPERTIES — LIGHT THEME
═══════════════════════════════════════════ */
:root {
  --bg:           #fafafa;
  --bg-alt:       #f2f2f2;
  --bg-card:      #ffffff;
  --border:       #e0e0e0;
  --border-strong:#c4c4c4;
  --text-primary: #0a0a0a;
  --text-secondary:#555555;
  --text-muted:   #999999;
  --accent:       #0a0a0a;
  --accent-hover: #333333;
  --btn-text:     #fafafa;
  --nav-bg:       rgba(250,250,250,0.88);
  --tag-bg:       #ededed;
  --tag-text:     #444444;
  --success:      #2d6a2d;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Outfit', system-ui, sans-serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  --radius:       8px;
  --radius-lg:    14px;
  --transition:   0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm:    0 1px 4px rgba(0,0,0,0.06);
  --shadow-md:    0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg:    0 8px 40px rgba(0,0,0,0.12);

  --section-gap:  120px;
  --container:    1120px;
}

/* ═══════════════════════════════════════════
   DARK THEME
═══════════════════════════════════════════ */
[data-theme="dark"] {
  --bg:           #0d0d0d;
  --bg-alt:       #141414;
  --bg-card:      #1a1a1a;
  --border:       #282828;
  --border-strong:#3a3a3a;
  --text-primary: #f0f0f0;
  --text-secondary:#a8a8a8;
  --text-muted:   #5a5a5a;
  --accent:       #f0f0f0;
  --accent-hover: #c8c8c8;
  --btn-text:     #0d0d0d;
  --nav-bg:       rgba(13,13,13,0.9);
  --tag-bg:       #222222;
  --tag-text:     #b0b0b0;
  --success:      #5dba5d;
  --shadow-sm:    0 1px 4px rgba(0,0,0,0.3);
  --shadow-md:    0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg:    0 8px 40px rgba(0,0,0,0.6);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

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

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

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

ul { list-style: none; }

/* ═══════════════════════════════════════════
   TYPOGRAPHY
═══════════════════════════════════════════ */
h1, h2, h3, h4 {
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ═══════════════════════════════════════════
   LAYOUT UTILITIES
═══════════════════════════════════════════ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

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

/* ═══════════════════════════════════════════
   SCROLL REVEAL
═══════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ═══════════════════════════════════════════
   SECTION LABELS & TITLES
═══════════════════════════════════════════ */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 64px;
}

/* ═══════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 40px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all var(--transition);
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn svg { flex-shrink: 0; transition: transform var(--transition); }
.btn:hover svg { transform: translate(2px, 1px); }

.btn-primary {
  background: var(--accent);
  color: var(--btn-text);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-full { width: 100%; justify-content: center; border-radius: var(--radius); }

/* ═══════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

#navbar.scrolled {
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 36px;
  margin-left: auto;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text-primary);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

#theme-toggle {
  margin-left: 24px;
  background: none;
  border: 1.5px solid var(--border-strong);
  border-radius: 40px;
  padding: 6px 14px;
  cursor: pointer;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

#theme-toggle:hover {
  border-color: var(--text-primary);
  background: var(--bg-alt);
}

.toggle-icon { line-height: 1; }
[data-theme="light"] .moon { display: none; }
[data-theme="dark"] .sun { display: none; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: 16px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  padding: 12px 32px 20px;
  border-top: 1px solid var(--border);
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  padding: 12px 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}

.mobile-menu a:hover { color: var(--text-primary); }

/* ═══════════════════════════════════════════
   HERO
═══════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 32px 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.4;
  pointer-events: none;
}

[data-theme="dark"] .hero-bg-grid { opacity: 0.25; }

/* Radial fade on grid */
.hero-bg-grid::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, transparent 0%, var(--bg) 80%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
  transition-delay: 0.05s;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--text-primary);
  margin-bottom: 32px;
  transition-delay: 0.1s;
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.18em;
  flex-wrap: nowrap;
  white-space: nowrap;
  text-align: center;
}

.name-first { display: inline; }
.name-last  { display: inline; font-weight: inherit; }

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
  transition-delay: 0.15s;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
  font-weight: 300;
  transition-delay: 0.2s;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  transition-delay: 0.25s;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  animation: fadeIn 1.5s 1s both;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 2s 1s infinite;
}

@keyframes scrollLine {
  0%   { opacity: 1; transform: scaleY(1) translateY(0); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(0) translateY(0); transform-origin: top; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ═══════════════════════════════════════════
   ABOUT
═══════════════════════════════════════════ */
#about {
  background: var(--bg-alt);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 80px;
  align-items: start;
}

.about-heading h2 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  position: sticky;
  top: 100px;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.8;
  margin-bottom: 18px;
}

.about-lead {
  font-size: 1.2rem !important;
  color: var(--text-primary) !important;
  font-weight: 400;
  margin-bottom: 24px !important;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.stat { display: flex; flex-direction: column; gap: 4px; }

.stat-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
}

/* ═══════════════════════════════════════════
   SKILLS
═══════════════════════════════════════════ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.skill-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--border-strong);
}

.skill-card-icon {
  width: 44px;
  height: 44px;
  background: var(--bg-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.skill-card h3 {
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 24px;
  font-family: var(--font-mono);
}

/* Skill bars */
.skill-list { display: flex; flex-direction: column; gap: 14px; }

.skill-list li {
  display: flex;
  align-items: center;
  gap: 12px;
}

.skill-name {
  font-size: 0.85rem;
  color: var(--text-secondary);
  width: 110px;
  flex-shrink: 0;
}

.skill-bar {
  flex: 1;
  height: 4px;
  background: var(--bg-alt);
  border-radius: 2px;
  overflow: hidden;
}

.skill-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--text-primary);
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-card.visible .skill-bar span {
  width: var(--w);
}

/* Tag cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 20px;
  font-family: var(--font-mono);
  transition: background var(--transition), color var(--transition);
}

.tag:hover {
  background: var(--text-primary);
  color: var(--btn-text);
}

/* ═══════════════════════════════════════════
   PROJECTS
═══════════════════════════════════════════ */
#projects { background: var(--bg-alt); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card.is-link {
  cursor: pointer;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--text-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

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

.project-card.is-link:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 4px;
}

.project-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.project-number {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.icon-link {
  color: var(--text-muted);
  transition: color var(--transition), transform var(--transition);
  display: flex;
}

.icon-link:hover {
  color: var(--text-primary);
  transform: scale(1.1);
}

.project-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 24px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-alt);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* ═══════════════════════════════════════════
   ACHIEVEMENTS
═══════════════════════════════════════════ */
.achievements-list {
  display: flex;
  flex-direction: column;
}

.achievement-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 40px;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.achievement-item:first-child { border-top: 1px solid var(--border); }

.achievement-item:hover { background: var(--bg-alt); margin: 0 -32px; padding: 36px 32px; border-radius: var(--radius); border-color: transparent; }

.achievement-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  padding-top: 4px;
  flex-shrink: 0;
}

.achievement-body h3 {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.achievement-body p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ═══════════════════════════════════════════
   CERTIFICATIONS
═══════════════════════════════════════════ */
#certifications { background: var(--bg-alt); }

.certs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.cert-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.cert-icon {
  width: 40px;
  height: 40px;
  background: var(--bg-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.cert-body h3 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.cert-issuer {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 8px !important;
}

.cert-desc {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.contact-left h2 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  line-height: 1;
}

.contact-left p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color var(--transition), gap var(--transition);
  font-family: var(--font-mono);
}

.contact-link:hover {
  color: var(--text-primary);
  gap: 16px;
}

/* Form */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-group label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.form-group input,
.form-group textarea {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
  width: 100%;
}

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

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--text-primary);
  box-shadow: 0 0 0 3px rgba(128,128,128,0.1);
}

.form-success {
  display: none;
  margin-top: 16px;
  padding: 14px 20px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--success);
  letter-spacing: 0.04em;
  text-align: center;
}

.form-success.show { display: block; animation: fadeIn 0.4s ease; }

/* ═══════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════ */
footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-primary);
  letter-spacing: 0.08em;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color var(--transition);
  font-family: var(--font-mono);
}

.footer-links a:hover { color: var(--text-primary); }

/* ═══════════════════════════════════════════
   RESPONSIVE — TABLET
═══════════════════════════════════════════ */
@media (max-width: 900px) {
  :root { --section-gap: 80px; }

  .nav-links { display: none; }
  .hamburger { display: flex; }
  #theme-toggle { margin-left: auto; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-heading h2 { position: static; font-size: 3rem; }

  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .certs-grid { grid-template-columns: 1fr; }

  .contact-grid { grid-template-columns: 1fr; gap: 48px; }

  .achievement-item:hover { margin: 0; padding: 36px 0; border-radius: 0; border-color: var(--border); }
  .achievement-item:hover { background: transparent; }
}

/* ═══════════════════════════════════════════
   RESPONSIVE — MOBILE
═══════════════════════════════════════════ */
@media (max-width: 600px) {
  :root { --section-gap: 64px; }

  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  .mobile-menu { padding: 12px 20px 20px; }

  .hero-name { font-size: clamp(4rem, 18vw, 6rem); }

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

  .about-stats { flex-direction: column; gap: 24px; }

  .achievement-item {
    grid-template-columns: 56px 1fr;
    gap: 16px;
  }

  .contact-form-wrap { padding: 24px 20px; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }

  .hero-scroll-hint { display: none; }
}

/* ═══════════════════════════════════════════
   STAGGER DELAYS FOR GRID ITEMS
═══════════════════════════════════════════ */
.projects-grid .project-card.reveal:nth-child(1) { transition-delay: 0s; }
.projects-grid .project-card.reveal:nth-child(2) { transition-delay: 0.07s; }
.projects-grid .project-card.reveal:nth-child(3) { transition-delay: 0.14s; }
.projects-grid .project-card.reveal:nth-child(4) { transition-delay: 0.21s; }
.projects-grid .project-card.reveal:nth-child(5) { transition-delay: 0.28s; }
.projects-grid .project-card.reveal:nth-child(6) { transition-delay: 0.35s; }

.skills-grid .skill-card.reveal:nth-child(1) { transition-delay: 0s; }
.skills-grid .skill-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.skills-grid .skill-card.reveal:nth-child(3) { transition-delay: 0.2s; }

.certs-grid .cert-card.reveal:nth-child(1) { transition-delay: 0s; }
.certs-grid .cert-card.reveal:nth-child(2) { transition-delay: 0.06s; }
.certs-grid .cert-card.reveal:nth-child(3) { transition-delay: 0.12s; }
.certs-grid .cert-card.reveal:nth-child(4) { transition-delay: 0.18s; }
.certs-grid .cert-card.reveal:nth-child(5) { transition-delay: 0.24s; }
.certs-grid .cert-card.reveal:nth-child(6) { transition-delay: 0.30s; }

.achievements-list .achievement-item.reveal:nth-child(1) { transition-delay: 0s; }
.achievements-list .achievement-item.reveal:nth-child(2) { transition-delay: 0.07s; }
.achievements-list .achievement-item.reveal:nth-child(3) { transition-delay: 0.14s; }
.achievements-list .achievement-item.reveal:nth-child(4) { transition-delay: 0.21s; }
.achievements-list .achievement-item.reveal:nth-child(5) { transition-delay: 0.28s; }
.achievements-list .achievement-item.reveal:nth-child(6) { transition-delay: 0.35s; }