/* ═══════════════════════════════════════════
   PORTFOLIO — DARK MODERN DESIGN
   ═══════════════════════════════════════════ */

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

:root {
  --bg:          #0b0d14;
  --bg-card:     #12141f;
  --bg-card-2:   #181b28;
  --surface:     #1c1f2e;
  --border:      rgba(255,255,255,0.06);
  --text:        #e4e6f0;
  --text-dim:    #8b8fa8;
  --accent:      #7c5cfc;
  --accent-glow: rgba(124,92,252,0.35);
  --green:       #34d399;
  --blue:        #60a5fa;
  --purple:      #a78bfa;
  --orange:      #fb923c;
  --cyan:        #22d3ee;
  --radius:      16px;
  --radius-sm:   10px;
  --transition:  0.3s cubic-bezier(0.4,0,0.2,1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── NAVIGATION ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
  backdrop-filter: blur(0px);
}
.nav.scrolled {
  background: rgba(11,13,20,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav__links {
  display: flex;
  gap: 8px;
  list-style: none;
}
.nav__link {
  display: block;
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  transition: var(--transition);
}
.nav__link:hover,
.nav__link.active {
  color: var(--text);
  background: rgba(124,92,252,0.12);
}

/* burger */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 700px) {
  .nav__burger { display: flex; }
  .nav__links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-card);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 4px;
    transition: var(--transition);
    box-shadow: -8px 0 32px rgba(0,0,0,0.4);
  }
  .nav__links.open { right: 0; }
  .nav__link { padding: 12px 18px; font-size: 1rem; }
}

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 24px 60px;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  animation: float 12s ease-in-out infinite;
}
.hero__orb--1 {
  width: 500px; height: 500px;
  background: var(--accent);
  top: -10%; left: -10%;
  animation-delay: 0s;
}
.hero__orb--2 {
  width: 400px; height: 400px;
  background: var(--green);
  bottom: -5%; right: -5%;
  animation-delay: -4s;
}
.hero__orb--3 {
  width: 300px; height: 300px;
  background: var(--blue);
  top: 40%; left: 50%;
  animation-delay: -8s;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(30px, -20px) scale(1.05); }
  66%      { transform: translate(-20px, 20px) scale(0.95); }
}

.hero__content {
  position: relative;
  z-index: 1;
}
.hero__greeting {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.hero__name {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 16px;
}
.hero__tagline {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.hero__desc {
  font-size: 1rem;
  color: var(--text-dim);
  max-width: 500px;
  margin: 0 auto 36px;
  opacity: 0.8;
}
.hero__buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 24px var(--accent-glow);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50%      { opacity: 0.3; transform: scaleY(0.6); }
}

/* ─── SECTIONS ─── */
.section {
  padding: 100px 0;
}
.section__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 8px;
}
.section__subtitle {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 48px;
}

/* ─── ABOUT ─── */
.about {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.about__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}
.about__card:hover {
  border-color: rgba(124,92,252,0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.about__card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

/* main card */
.about__card--main {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.about__avatar {
  width: 96px; height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: 0 0 40px var(--accent-glow);
}
.about__avatar-placeholder {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
}
.about__subtitle {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}
.about__bio {
  color: var(--text-dim);
  max-width: 600px;
  line-height: 1.7;
}
.about__bio strong {
  color: var(--text);
}

/* stats */
.about__stats {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.about__stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.about__stat:hover {
  border-color: rgba(124,92,252,0.3);
  transform: translateY(-2px);
}
.about__stat-icon { font-size: 1.6rem; }
.about__stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
}
.about__stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* schedule */
.about__schedule {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.about__schedule li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(124,92,252,0.06);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.schedule__time {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: var(--accent);
  font-size: 0.9rem;
}
.schedule__event {
  color: var(--text-dim);
  font-weight: 500;
}

/* tags */
.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
}
.tag--small { padding: 5px 12px; font-size: 0.78rem; }
.tag--green  { background: rgba(52,211,153,0.1); border-color: rgba(52,211,153,0.2); color: var(--green); }
.tag--blue   { background: rgba(96,165,250,0.1); border-color: rgba(96,165,250,0.2); color: var(--blue); }
.tag--purple { background: rgba(167,139,250,0.1); border-color: rgba(167,139,250,0.2); color: var(--purple); }
.tag--orange { background: rgba(251,146,60,0.1); border-color: rgba(251,146,60,0.2); color: var(--orange); }
.tag--cyan   { background: rgba(34,211,238,0.1); border-color: rgba(34,211,238,0.2); color: var(--cyan); }

/* tech */
.about__tech-icons {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.tech-icon {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(124,92,252,0.1);
  border: 1px solid rgba(124,92,252,0.2);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 0.8rem;
  transition: var(--transition);
}
.tech-icon:hover {
  background: rgba(124,92,252,0.2);
  transform: scale(1.1);
}

/* ─── PROJECTS ─── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.project-card:hover {
  border-color: rgba(124,92,252,0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.project-card__header {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.project-card__header::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.15;
}
.project-card__header--green  { background: linear-gradient(135deg, rgba(52,211,153,0.15), transparent); }
.project-card__header--blue   { background: linear-gradient(135deg, rgba(96,165,250,0.15), transparent); }
.project-card__header--purple { background: linear-gradient(135deg, rgba(167,139,250,0.15), transparent); }
.project-card__header--orange { background: linear-gradient(135deg, rgba(251,146,60,0.15), transparent); }
.project-card__icon {
  font-size: 2.4rem;
}
.project-card__body {
  padding: 24px;
}
.project-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.project-card__desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
}
.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

@media (max-width: 700px) {
  .projects__grid { grid-template-columns: 1fr; }
  .about__grid { grid-template-columns: 1fr; }
  .about__stats { grid-template-columns: repeat(2, 1fr); }
}

/* ─── CONTACT ─── */
.contact {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}
.contact__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.contact__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.contact__card:hover {
  border-color: rgba(124,92,252,0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.contact__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 12px;
}
.contact__card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}
.contact__card p {
  color: var(--text-dim);
  font-size: 0.9rem;
}
.contact__cta {
  text-align: center;
  padding: 40px;
  background: linear-gradient(135deg, rgba(124,92,252,0.08), rgba(52,211,153,0.08));
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.contact__cta p {
  font-size: 1.15rem;
  font-weight: 600;
}

@media (max-width: 700px) {
  .contact__grid { grid-template-columns: 1fr; }
}

/* ─── FOOTER ─── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ─── SCROLL ANIMATIONS ─── */
.section__title,
.about__card,
.about__stat,
.project-card,
.contact__card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.section__title.visible,
.about__card.visible,
.about__stat.visible,
.project-card.visible,
.contact__card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* stagger children */
.about__stat:nth-child(2) { transition-delay: 0.08s; }
.about__stat:nth-child(3) { transition-delay: 0.16s; }
.about__stat:nth-child(4) { transition-delay: 0.24s; }
.project-card:nth-child(2) { transition-delay: 0.1s; }
.project-card:nth-child(3) { transition-delay: 0.2s; }
.project-card:nth-child(4) { transition-delay: 0.3s; }
.contact__card:nth-child(2) { transition-delay: 0.1s; }
.contact__card:nth-child(3) { transition-delay: 0.2s; }