/* ===== Variables ===== */
:root {
  --font: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --bg: #1b1b1b;
  --bg-light: #242424;
  --bg-card: #2a2a2a;
  --bg-darker: #151515;

  --text: #ffffff;
  --text-secondary: #bbbbbb;
  --text-muted: #888888;

  --accent: #04c2c9;
  --accent-dark: #039ba0;
  --accent-glow: rgba(4, 194, 201, 0.25);

  --sidebar-width: 220px;

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
}

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

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

ul { list-style: none; }

::selection {
  background: var(--accent);
  color: var(--bg);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 30px;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-darker);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 40px 0;
  z-index: 1000;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar__brand {
  text-align: center;
  padding: 0 20px;
}

.sidebar__brand a {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 20px;
}

.sidebar__link {
  display: block;
  padding: 12px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: all 0.3s var(--ease);
  position: relative;
}

.sidebar__link:hover,
.sidebar__link.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.sidebar__link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.sidebar__socials {
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 0 20px;
}

.sidebar__socials a {
  color: var(--text-muted);
  transition: color 0.3s, transform 0.3s;
}

.sidebar__socials a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg-darker);
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1001;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-header__brand {
  font-size: 1.3rem;
  font-weight: 700;
}

.mobile-header__brand span {
  color: var(--accent);
}

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

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

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

/* ===== Main Content ===== */
.main {
  margin-left: var(--sidebar-width);
}

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

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(4, 194, 201, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(4, 194, 201, 0.05) 0%, transparent 50%),
    linear-gradient(135deg, #0f0f0f 0%, #1b1b1b 50%, #0f0f0f 100%);
  background-size: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
}

.hero__content {
  position: relative;
  text-align: center;
  padding: 0 30px;
  z-index: 1;
}

.hero__content h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

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

.hero__typed-wrap {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 600;
  min-height: 2em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__typed {
  color: var(--accent);
  border-right: none;
}

.hero__cursor {
  color: var(--accent);
  animation: blink 0.7s infinite;
  font-weight: 300;
  margin-left: 2px;
}

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

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section--dark {
  background: var(--bg-light);
}

.section__heading {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
  letter-spacing: 0.04em;
}

.section__heading::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 3px;
}

/* ===== About Section ===== */
.about__row {
  display: flex;
  gap: 60px;
  align-items: center;
}

.about__text {
  flex: 1;
}

.about__text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about__photo {
  flex-shrink: 0;
}

.about__photo-placeholder {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--bg);
  box-shadow: 0 0 40px var(--accent-glow);
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  margin-top: 12px;
}

.btn:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

/* ===== Experience Section ===== */
.experience__list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.exp-card {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 28px 32px;
  border-left: 4px solid var(--accent);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.5s var(--ease) forwards;
}

.exp-card:nth-child(1) { animation-delay: 0s; }
.exp-card:nth-child(2) { animation-delay: 0.08s; }
.exp-card:nth-child(3) { animation-delay: 0.16s; }
.exp-card:nth-child(4) { animation-delay: 0.24s; }
.exp-card:nth-child(5) { animation-delay: 0.32s; }
.exp-card:nth-child(6) { animation-delay: 0.40s; }
.exp-card:nth-child(7) { animation-delay: 0.48s; }

.exp-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.exp-card__role {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.exp-card__meta {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 12px;
}

.exp-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Skills Section ===== */
.skills__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 48px;
}

.skill__header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.skill__name {
  font-size: 0.9rem;
  font-weight: 500;
}

.skill__pct {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-mono);
}

.skill__bar {
  height: 8px;
  background: var(--bg-card);
  border-radius: 10px;
  overflow: hidden;
}

.skill__fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  border-radius: 10px;
  transition: width 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ===== Counters Section ===== */
.counters {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(4, 194, 201, 0.1) 0%, var(--bg-darker) 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.counters__grid {
  display: flex;
  justify-content: center;
  gap: 80px;
  flex-wrap: wrap;
}

.counter {
  text-align: center;
}

.counter__number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  font-family: var(--font-mono);
}

.counter__plus {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.counter__label {
  display: block;
  margin-top: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ===== Portfolio Section ===== */
.portfolio__grid {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.portfolio__item {
  display: flex;
  gap: 40px;
  align-items: center;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

.portfolio__item--reverse {
  flex-direction: row-reverse;
}

.portfolio__img {
  flex-shrink: 0;
  width: 340px;
}

.portfolio__img-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  transition: transform 0.4s var(--ease), box-shadow 0.4s;
}

.portfolio__item:hover .portfolio__img-placeholder {
  transform: scale(1.03);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.portfolio__img--1 {
  background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
}
.portfolio__img--2 {
  background: linear-gradient(135deg, #2d1b69, #11998e);
}
.portfolio__img--3 {
  background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
}
.portfolio__img--4 {
  background: linear-gradient(135deg, #1f1c2c, #928dab);
}

.portfolio__info {
  flex: 1;
}

.portfolio__info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.portfolio__info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.portfolio__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: opacity 0.3s;
}

.portfolio__link:hover {
  opacity: 0.7;
}

/* ===== Footer ===== */
.footer {
  padding: 30px 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== Scroll Reveal Generic ===== */
.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.4s var(--ease);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .mobile-header {
    display: flex;
  }

  .main {
    margin-left: 0;
  }

  .hero {
    min-height: 100vh;
    padding-top: 60px;
  }

  .about__row {
    flex-direction: column-reverse;
    gap: 40px;
    text-align: center;
  }

  .about__photo-placeholder {
    width: 160px;
    height: 160px;
    font-size: 2.8rem;
  }

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

  .portfolio__item,
  .portfolio__item--reverse {
    flex-direction: column;
  }

  .portfolio__img {
    width: 100%;
  }

  .counters__grid {
    gap: 40px;
  }

  .section {
    padding: 72px 0;
  }
}

@media (max-width: 480px) {
  .hero__content h1 {
    font-size: 1.7rem;
  }

  .hero__typed-wrap {
    font-size: 1rem;
  }

  .counters__grid {
    gap: 32px;
  }

  .counter__number {
    font-size: 2.2rem;
  }

  .exp-card {
    padding: 20px 24px;
  }

  .container {
    padding: 0 20px;
  }
}