/* ===========================
   CSS VARIABLES & RESET
=========================== */
:root {
  --bg: #0a0a0a;
  --bg-2: #111113;
  --bg-3: #18181c;
  --surface: rgba(255,255,255,0.035);
  --surface-hover: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.07);
  --border-accent: rgba(56,189,248,0.3);

  --blue: #38bdf8;
  --blue-dim: rgba(56,189,248,0.12);
  --blue-glow: rgba(56,189,248,0.25);
  --blue-dark: #0ea5e9;

  --white: #f1f5f9;
  --gray-1: #94a3b8;
  --gray-2: #475569;
  --gray-3: #1e293b;

  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;

  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-blue: 0 0 40px rgba(56,189,248,0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ===========================
   UTILITY
=========================== */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
}

.glass {
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.section {
  padding: 7rem 0;
}

.section__header {
  margin-bottom: 4rem;
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--blue);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
}

.section__subtitle {
  margin-top: 0.75rem;
  color: var(--gray-1);
  font-size: 1.05rem;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* ===========================
   NAVBAR
=========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

.nav.scrolled {
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
  padding: 0.85rem 0;
}

.nav__container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
  transition: color var(--transition);
}
.nav__logo:hover { color: var(--blue); }

.dot { color: var(--blue); }

.nav__links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--gray-1);
  text-transform: uppercase;
  transition: color var(--transition);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 1px;
  background: var(--blue);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav__link:hover, .nav__link.active { color: var(--white); }
.nav__link:hover::after, .nav__link.active::after { transform: scaleX(1); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav__toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ===========================
   HERO
=========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 80%);
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 8s ease-in-out infinite;
}
.hero__orb--1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(56,189,248,0.15) 0%, transparent 70%);
  top: -10%; left: -10%;
}
.hero__orb--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
  bottom: -5%; right: -5%;
  animation-delay: -4s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-15px, 20px) scale(0.95); }
}

.hero__particles {
  position: absolute;
  inset: 0;
}

.hero__container {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
  padding-top: 6rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--blue-dim);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  padding: 0.35rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--blue);
  margin-bottom: 2rem;
}

.hero__badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 8px #4ade80;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 1.25rem;
}
.hero__name-accent {
  background: linear-gradient(135deg, var(--blue) 0%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__role {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--gray-1);
  margin-bottom: 1.5rem;
  min-height: 2rem;
}
.hero__role-typed { color: var(--blue); }
.hero__cursor {
  color: var(--blue);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero__tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gray-1);
  max-width: 540px;
  margin-bottom: 2.5rem;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  font-weight: 400;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.btn--primary {
  background: var(--blue);
  color: #0a0a0a;
}
.btn--primary:hover {
  background: #7dd3fc;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--blue-glow);
}
.btn--ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-2px);
}
.btn--full { width: 100%; justify-content: center; }

.hero__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--gray-2);
}
.hero__meta-link { transition: color var(--transition); }
.hero__meta-link:hover { color: var(--blue); }
.hero__meta-sep { color: var(--gray-3); }

.hero__scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  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;
  letter-spacing: 0.15em;
  color: var(--gray-2);
  text-transform: uppercase;
  animation: scrollHint 2s ease-in-out infinite;
}
.hero__scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--gray-2), transparent);
}
@keyframes scrollHint {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.7; }
  50% { transform: translateX(-50%) translateY(5px); opacity: 1; }
}

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

.about__grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 5rem;
  align-items: start;
}

.about__avatar {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0 auto 2rem;
}
.about__avatar-inner {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue) 0%, #818cf8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.about__avatar-initials {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: #0a0a0a;
}
.about__avatar-ring {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid rgba(56,189,248,0.2);
  animation: ringPulse 3s ease-in-out infinite;
}
.about__avatar-ring--2 {
  inset: -18px;
  border-color: rgba(56,189,248,0.08);
  animation-delay: -1.5s;
}
@keyframes ringPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.5; }
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.about__stat {
  text-align: center;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
}
.about__stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue);
}
.about__stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--gray-1);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.about__text {
  color: var(--gray-1);
  margin-bottom: 1.25rem;
  font-size: 1.02rem;
}
.about__text strong { color: var(--white); font-weight: 500; }

.about__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--blue);
  background: var(--blue-dim);
  border: 1px solid var(--border-accent);
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  transition: background var(--transition);
}
.chip:hover { background: rgba(56,189,248,0.2); }

/* ===========================
   SKILLS
=========================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skills__category {
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.skills__category:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-blue);
}

.skills__cat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}
.skills__cat-icon { font-size: 1.4rem; }
.skills__cat-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.skill-bar { margin-bottom: 1.25rem; }
.skill-bar__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--gray-1);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}
.skill-bar__pct { color: var(--blue); font-size: 0.78rem; }
.skill-bar__track {
  height: 4px;
  background: var(--bg-3);
  border-radius: 100px;
  overflow: hidden;
}
.skill-bar__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue) 0%, #818cf8 100%);
  border-radius: 100px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   PROJECTS
=========================== */
.projects { background: var(--bg-2); }

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

.project-card {
  border-radius: var(--radius);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4), var(--shadow-blue);
}

.project-card__glow {
  position: absolute;
  top: -50%; right: -50%;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(56,189,248,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  transition: opacity var(--transition);
  opacity: 0;
}
.project-card:hover .project-card__glow { opacity: 1; }

.project-card__number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  color: rgba(56,189,248,0.08);
  line-height: 1;
  margin-bottom: 1rem;
  letter-spacing: -0.04em;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.85rem;
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--gray-1);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--gray-1);
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 0.25rem 0.7rem;
  border-radius: 4px;
  transition: color var(--transition), border-color var(--transition);
}
.tag:hover { color: var(--blue); border-color: var(--border-accent); }

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--blue);
  transition: gap var(--transition), opacity var(--transition);
}
.project-card__link:hover { gap: 0.75rem; opacity: 0.8; }

/* ===========================
   QUALIFICATION / TIMELINE
=========================== */
.timeline {
  max-width: 720px;
}

.timeline__item {
  display: flex;
  gap: 2rem;
  margin-bottom: 0.5rem;
}

.timeline__marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  padding-top: 1.5rem;
}

.timeline__dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 2px solid var(--blue);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
.timeline__dot--active {
  background: var(--blue);
  box-shadow: 0 0 12px var(--blue-glow);
}

.timeline__line {
  width: 1px;
  flex: 1;
  background: linear-gradient(to bottom, rgba(56,189,248,0.3), rgba(56,189,248,0.05));
  min-height: 40px;
  margin: 8px 0;
}

.timeline__content {
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  flex: 1;
  transition: border-color var(--transition);
}
.timeline__content:hover { border-color: var(--border-accent); }
.timeline__content--active {
  border-color: rgba(56,189,248,0.2);
  background: rgba(56,189,248,0.03);
}

.timeline__year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--blue);
  display: block;
  margin-bottom: 0.6rem;
}
.timeline__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.35rem;
}
.timeline__place {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--gray-2);
  margin-bottom: 0.6rem;
}
.timeline__desc {
  font-size: 0.88rem;
  color: var(--gray-1);
  line-height: 1.65;
}
.timeline__badge {
  display: inline-block;
  margin-top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #4ade80;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.2);
  padding: 0.2rem 0.7rem;
  border-radius: 100px;
}

/* ===========================
   ACHIEVEMENTS
=========================== */
.achievements { background: var(--bg-2); }

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

.achievement-card {
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.achievement-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-blue);
}

.achievement-card__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.achievement-card__counter {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.04em;
}

.achievement-card__label {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--gray-1);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.achievement-card__subjects {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.achievement-card__subjects span {
  font-size: 0.8rem;
  color: var(--gray-2);
  font-family: var(--font-mono);
  background: var(--bg-3);
  border-radius: 4px;
  padding: 0.3rem 0.6rem;
}

/* ===========================
   CONTACT
=========================== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), transform var(--transition);
}
.contact__link:hover {
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.contact__link-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  color: var(--blue);
}

.contact__link-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-2);
  margin-bottom: 0.2rem;
}

.contact__link-val {
  display: block;
  font-size: 0.9rem;
  color: var(--white);
  word-break: break-all;
}

/* FORM */
.contact__form {
  border-radius: var(--radius);
  padding: 2.5rem;
}

.form__group {
  margin-bottom: 1.5rem;
}

.form__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-1);
  margin-bottom: 0.5rem;
}

.form__input {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 300;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: none;
}
.form__input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-dim);
}
.form__input::placeholder { color: var(--gray-2); }
.form__input.error { border-color: #f87171; }

.form__textarea { min-height: 130px; }

.form__error {
  display: block;
  font-size: 0.78rem;
  color: #f87171;
  font-family: var(--font-mono);
  margin-top: 0.4rem;
  min-height: 1rem;
}

.form__success {
  display: none;
  margin-top: 1rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #4ade80;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.2);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
}
.form__success.show { display: block; }

/* ===========================
   FOOTER
=========================== */
.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
}
.footer__text {
  font-size: 0.9rem;
  color: var(--gray-2);
}
.footer__text strong { color: var(--gray-1); }
.footer__sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gray-3);
  margin-top: 0.35rem;
  letter-spacing: 0.1em;
}

/* ===========================
   SCROLL TO TOP
=========================== */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px; height: 42px;
  background: var(--blue);
  color: #0a0a0a;
  border-radius: 50%;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--blue-glow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 999;
}
.scroll-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.scroll-top:hover {
  background: #7dd3fc;
  transform: translateY(-2px);
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1024px) {
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .about__grid { grid-template-columns: 1fr; gap: 3rem; }
  .about__visual { display: flex; align-items: center; gap: 2rem; }
  .about__avatar { margin: 0; }
  .achievements__grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 5rem 0; }
  .section__title { font-size: 2rem; }

  .nav__links {
    position: fixed;
    top: 0; right: -100%;
    height: 100vh;
    width: 280px;
    background: #0d0d0f;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    border-left: 1px solid var(--border);
    transition: right var(--transition);
    font-size: 1rem;
  }
  .nav__links.open { right: 0; }
  .nav__link { font-size: 0.9rem; letter-spacing: 0.1em; }

  .nav__toggle { display: flex; }
  .nav__toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle.active span:nth-child(2) { opacity: 0; }
  .nav__toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .skills__grid { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr; }
  .achievements__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; }
  .about__visual { flex-direction: column; }
  .about__stats { width: 100%; max-width: 300px; }
  .hero__name { font-size: clamp(2.5rem, 10vw, 4rem); }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  .hero__cta { flex-direction: column; }
  .btn { justify-content: center; }
  .contact__form { padding: 1.5rem; }
}