/* ========================================
   DIAZ DJUL — PORTFOLIO CSS
   ======================================== */

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

/* ---- DARK MODE (default) ---- */
:root,
[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-2: #111111;
  --bg-card: #141414;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(99, 102, 241, 0.4);
  --text: #f0f0f0;
  --text-muted: #888;
  --text-dim: #555;
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --shadow: rgba(0, 0, 0, 0.5);
  --navbar-scrolled: rgba(10, 10, 10, 0.88);
}

/* ---- LIGHT MODE ---- */
[data-theme="light"] {
  --bg: #f6f6f6;
  --bg-2: #eeeeee;
  --bg-card: #ffffff;
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(99, 102, 241, 0.45);
  --text: #0d0d0d;
  --text-muted: #555;
  --text-dim: #aaa;
  --accent: #5153e6;
  --accent-2: #7c3aed;
  --accent-glow: rgba(81, 83, 230, 0.18);
  --shadow: rgba(0, 0, 0, 0.1);
  --navbar-scrolled: rgba(246, 246, 246, 0.92);
}

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ---------- UTILITY ---------- */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.accent { color: var(--accent); }
.section { padding: 120px 0; }

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

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

/* ---------- NAVBAR ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 1.25rem 0;
}

.navbar.scrolled {
  background: var(--navbar-scrolled);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover,
.nav-link.active { color: var(--text); }
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* ---------- NAV CONTROLS ---------- */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.nav-toggle-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.75rem;
  border-radius: 100px;
  cursor: pointer;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}

.nav-toggle-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.nav-toggle-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- HAMBURGER ---------- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  top: -150px;
  right: -150px;
  animation: float 8s ease-in-out infinite;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
  bottom: 0;
  left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}

[data-theme="light"] .orb-1 {
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
}
[data-theme="light"] .orb-2 {
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
}

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

.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 2rem;
}

.hero-name {
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 0.5rem;
}

.hero-role {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
  min-height: 2.5rem;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.hero-scroll-hint {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scroll-line {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  animation: pulse-line 2s ease-in-out infinite;
}

@keyframes pulse-line {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ---------- ABOUT ---------- */
.about-section { background: var(--bg-2); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  font-size: 1.025rem;
}

.about-text strong { color: var(--text); }

.about-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.stat-num {
  display: block;
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  transition: 0.3s;
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: 0.3s;
}

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

.card-avatar {
  position: relative;
  width: 100px;
  height: 100px;
}

.avatar-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: spin-ring 8s linear infinite;
}

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

.avatar-inner {
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 900;
  color: white;
  letter-spacing: -0.05em;
  overflow: hidden;
}

.avatar-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
  display: block;
}

.card-name { font-size: 1.1rem; font-weight: 700; }

.card-role {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: -0.75rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.tag {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* ---------- SKILLS ---------- */
.skills-section { background: var(--bg); }

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

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.skill-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px -10px var(--accent-glow);
}

.skill-icon {
  width: 44px;
  height: 44px;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.skill-icon svg { width: 100%; height: 100%; }
.skill-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }

.skill-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.skill-bar {
  height: 3px;
  background: var(--border);
  border-radius: 100px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 100px;
  width: 0%;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- EXPERIENCE ---------- */
.experience-section { background: var(--bg-2); }

.timeline { position: relative; max-width: 800px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 2.5rem;
  position: relative;
}

.timeline-dot {
  width: 23px;
  height: 23px;
  min-width: 23px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 2px solid var(--accent);
  margin-top: 4px;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
  transition: 0.3s;
  z-index: 1;
}

.timeline-item:hover .timeline-dot {
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(99, 102, 241, 0.2);
}

.timeline-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  transition: 0.3s;
}

.timeline-card:hover { border-color: var(--border-hover); }

.tl-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.tl-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.25rem; }
.tl-company { font-size: 0.85rem; color: var(--accent); font-weight: 500; }

.tl-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
}

[data-theme="light"] .tl-date { background: rgba(0,0,0,0.03); }

.tl-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.tl-list li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
  line-height: 1.65;
}

.tl-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7rem;
  top: 4px;
}

.tl-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tl-tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-dim);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

[data-theme="light"] .tl-tag { background: rgba(0,0,0,0.04); }

/* ---------- PROJECTS ---------- */
.projects-section { background: var(--bg); }

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

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 30px 60px -15px var(--accent-glow);
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- Text badge replacing emoji icon ---- */
.project-badge {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
}

.project-link-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: 0.3s;
}

.project-link-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.project-link-btn svg { width: 16px; height: 16px; }
[data-theme="light"] .project-link-btn { background: rgba(0,0,0,0.03); }

.project-title { font-size: 1.075rem; font-weight: 700; margin-top: 0.25rem; }

.project-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.project-tags span {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* ---------- CERTIFICATES ---------- */
.certificates-section { background: var(--bg-2); }

.certs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 800px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.cert-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 20px 50px -10px var(--accent-glow);
  transform: translateY(-4px);
}

.cert-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* ---- Text badge for certs ---- */
.cert-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  padding: 0.25rem 0.7rem;
  border-radius: 100px;
  margin-bottom: 0.5rem;
  width: fit-content;
}

.cert-title { font-size: 1rem; font-weight: 700; line-height: 1.3; }
.cert-issuer { font-size: 0.78rem; color: var(--accent); font-weight: 500; }

.cert-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 0.25rem;
}

.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  transition: 0.3s;
}

.cert-link svg { width: 13px; height: 13px; transition: 0.3s; }
.cert-link:hover { color: var(--accent-2); gap: 0.6rem; }

/* ---------- CONTACT ---------- */
.contact-section { background: var(--bg); }

.contact-sub {
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 3.5rem;
  font-size: 1.05rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: 0.3s;
}

.contact-item:hover {
  border-color: var(--border-hover);
  transform: translateX(6px);
}

.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.contact-icon svg { width: 20px; height: 20px; }

.contact-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.15rem;
}

.contact-value { font-size: 0.9rem; font-weight: 600; }

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }

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

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: 0.3s;
  resize: none;
}

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

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.btn svg { width: 16px; height: 16px; }

.form-success {
  display: none;
  text-align: center;
  font-size: 0.9rem;
  color: #4ade80;
  padding: 0.75rem;
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: 8px;
}

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

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy { font-size: 0.85rem; color: var(--text-dim); }

.footer-socials { display: flex; gap: 1rem; }

.footer-socials a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: 0.3s;
}

.footer-socials a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  transform: translateY(-2px);
}

.footer-socials svg { width: 16px; height: 16px; }
[data-theme="light"] .footer-socials a { background: rgba(0,0,0,0.04); }

/* ---------- SCROLL ANIMATIONS ---------- */
.reveal, .fade-up {
  opacity: 0;
  transform: translateY(30px);
  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, .fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up:nth-child(1) { transition-delay: 0.1s; }
.fade-up:nth-child(2) { transition-delay: 0.15s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.25s; }
.fade-up:nth-child(5) { transition-delay: 0.3s; }
.fade-up:nth-child(6) { transition-delay: 0.35s; }
.reveal:nth-child(odd) { transition-delay: 0.05s; }
.reveal:nth-child(even) { transition-delay: 0.15s; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 100px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ================================================
   RESPONSIVE
   ================================================ */

@media (max-width: 1024px) {
  .nav-links { gap: 1.5rem; }
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-card-wrap { order: -1; }
  .about-card { max-width: 360px; margin: 0 auto; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .certs-grid { grid-template-columns: 1fr; max-width: 100%; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 640px) {
  .section { padding: 80px 0; }
  .container { padding: 0 1.25rem; }

  .nav-links {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,10,10,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
    z-index: 999;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
  }

  [data-theme="light"] .nav-links {
    background: rgba(246, 246, 246, 0.98);
  }

  .nav-links.open { transform: translateX(0); pointer-events: all; }
  .nav-link { font-size: 1.25rem; }
  .hamburger { display: flex; z-index: 1000; position: relative; }

  .hero-role { font-size: 1.1rem; }
  .hero-tagline { font-size: 0.95rem; }
  .hero-ctas { flex-direction: column; align-items: flex-start; }

  .about-stats { flex-direction: column; gap: 1.25rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .tl-header { flex-direction: column; gap: 0.5rem; }
  .footer-inner { flex-direction: column; text-align: center; }
  .section-title { font-size: 1.75rem; }
  .nav-toggle-btn { font-size: 0.65rem; padding: 0.3rem 0.6rem; }
}