/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --bg-primary:    #121212;
  --bg-secondary:  #1a1a1a;
  --bg-card:       #1e1e1e;
  --accent:        #00d4ff;
  --accent-hover:  #00b8e6;
  --accent-glow:   rgba(0, 212, 255, 0.15);
  --text-primary:  #ededed;
  --text-secondary:#a0a0a0;
  --border:        rgba(255, 255, 255, 0.1);
  --radius:        8px;
  --radius-lg:     14px;
  --transition:    0.25s ease;
  --shadow:        0 4px 24px rgba(0, 0, 0, 0.4);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  font-size: 16px;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

ul { list-style: none; }

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

/* ============================================================
   Layout Utilities
   ============================================================ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--bg-secondary);
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 48px;
  position: relative;
  display: inline-block;
  background: linear-gradient(to bottom, #fff, #6b7280);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
}

/* ============================================================
   Fade-in Animations
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Section Dividers
   ============================================================ */
.section-divider {
  width: 100%;
  max-width: 1100px;
  height: 1px;
  background: rgba(255, 255, 255, 0.05);
  margin: 0 auto;
}

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  transition: padding var(--transition);
}

.nav__inner {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 10px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 95vw;
}

.nav.scrolled {
  padding: 10px 32px;
}

.nav__logo {
  font-family: 'Averia Gruesa Libre', cursive;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 1px;
  transition: color var(--transition);
}

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

.nav__links {
  display: flex;
  gap: 24px;
}

.nav__divider {
  width: 1px;
  height: 24px;
  background: rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

.nav__links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: color var(--transition);
  position: relative;
  padding-bottom: 2px;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.25s ease;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--text-primary);
}

.nav__links a:hover::after,
.nav__links a.active::after {
  width: 100%;
}

.nav__links a.active {
  color: var(--accent);
}

.nav__cta {
  padding: 7px 18px !important;
  border: 1.5px solid var(--accent) !important;
  border-radius: 999px !important;
  color: var(--accent) !important;
  padding-bottom: 7px !important;
}

.nav__cta::after {
  display: none !important;
}

.nav__cta:hover {
  background: var(--accent-glow) !important;
  color: var(--accent) !important;
}

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

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}

.btn--primary {
  background: var(--accent);
  color: #000;
}

.btn--primary:hover {
  background: var(--accent-hover);
  color: #000;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn--outline {
  border: 1.5px solid var(--accent);
  color: var(--accent);
}

.btn--outline:hover {
  background: var(--accent-glow);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 80px 24px 40px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, rgba(0, 212, 255, 0.07) 0%, transparent 70%),
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  z-index: 0;
}

/* subtle grid */
.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.25;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero__greeting {
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 8px;
  font-weight: 500;
}

.hero__name {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__typewriter {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  height: 2em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  margin-bottom: 12px;
}

.cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
  font-weight: 300;
}

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

.hero__location {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 36px;
}

.hero__cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-secondary);
  animation: bounce 2s infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   About
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

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

.about__education {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.about__edu-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.about__edu-icon {
  font-size: 1.4rem;
  margin-top: 2px;
}

.about__edu-item div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.about__edu-item strong {
  color: var(--text-primary);
}

.about__edu-item span {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.about__roles h3 {
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 20px;
}

.about__roles ul {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about__roles li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
}

.about__roles li strong {
  color: var(--text-primary);
  font-size: 0.95rem;
}

.about__roles li span {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ============================================================
   Skills
   ============================================================ */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.skills__group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color var(--transition);
}

.skills__group:hover {
  border-color: var(--accent);
}

.skills__group h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 14px;
}

/* ============================================================
   Badges
   ============================================================ */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-block;
  padding: 5px 12px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-primary);
  transition: all var(--transition);
}

.badge:hover {
  background: rgba(0, 212, 255, 0.18);
  border-color: var(--accent);
}

.badge--sm {
  padding: 3px 9px;
  font-size: 0.78rem;
}

/* ============================================================
   Projects
   ============================================================ */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.project-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding:0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.project-card:hover {
  border-color: rgba(168, 85, 247, 0.5);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.15);
  transform: translateY(-4px);
}

.project-card__image {
  height: 180px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  transition: transform 0.5s ease;
}

.project-card:hover .project-card__image {
  transform: scale(1.05);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.project-card__action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1.5px solid #fff;
  border-radius: 999px;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  background: transparent;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.project-card__action:hover {
  background: #a855f7;
  border-color: #a855f7;
  color: #000;
}

.project-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.project-card__category {
  font-family: monospace;
  font-size: 0.78rem;
  color: #a855f7;
  letter-spacing: 0.5px;
}

.project-card__body h3 {
  font-size:1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.project-card__desc {
  color: #a0a0a0;
  font-size: 0.9rem;
  line-height: 1.6;
  flex:1;
}

.project-card__tech {
  margin-top: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-card__tech .badge {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 4px;
  color: #d1d5db;
}

.project-card__footer {
  margin-top: 8px;
}

.project-card__footer a {
  font-size: 0.88rem;
  font-weight: 600;
  color: #a855f7;
}

.project-card__footer a:hover {
  text-decoration: underline;
  color: #c084fc;
}

.projects__cta {
  margin-top: 48px;
  text-align: center;
}

/* ============================================================
   Experience / Timeline
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline__item {
  position: relative;
  padding-bottom: 32px;
}

.timeline__dot {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--bg-secondary), 0 0 0 5px var(--border);
}

.timeline__content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.timeline__header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
}

.timeline__header h3 {
  font-size: 1.05rem;
  font-weight: 700;
}

.timeline__date {
  font-size: 0.85rem;
  color: var(--accent);
  white-space: nowrap;
}

.timeline__org {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.timeline__content ul {
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline__content li {
  padding-left: 14px;
  position: relative;
}

.timeline__content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ============================================================
   Achievements
   ============================================================ */
.stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 56px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.stat {
  text-align: center;
}

.stat__number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--accent);
  display: inline;
}

.stat__plus {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--accent);
}

.stat__label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

.platforms {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 48px;
}

.platform-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 24px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  transition: all var(--transition);
  min-width: 150px;
}

.platform-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-3px);
  color: var(--text-primary);
}

.platform-card__name {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.platform-card__rating {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}

.platform-card__rank {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.rankings h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.rankings__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rankings__list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.rankings__badge {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

/* ============================================================
   Contact
   ============================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact__info-items {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 40px;
}

.contact__info-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact__info-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact__info-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.contact__info-value {
  font-size: 0.97rem;
  font-weight: 500;
  color: var(--text-primary);
}

a.contact__info-value:hover {
  color: var(--accent);
}

.contact__socials-section h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-weight: 600;
}

.contact__socials {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.contact__social-icon {
  width: 42px;
  height: 42px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: border-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.contact__social-icon:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.contact__tagline {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 28px;
  line-height: 1.7;
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.contact__form input,
.contact__form textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.93rem;
  font-family: inherit;
  transition: border-color var(--transition);
}

.contact__form input::placeholder,
.contact__form textarea::placeholder {
  color: var(--text-secondary);
}

.contact__form input:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.contact__form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__form-status {
  font-size: 0.88rem;
  display: none;
  font-weight: 500;
}

.contact__form-status--success { color: #4ade80; }
.contact__form-status--error   { color: #f87171; }

.contact__form button {
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
}

.contact__form button:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.contact__form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  padding: 24px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.88rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer a {
  color: var(--text-secondary);
}

.footer a:hover {
  color: #a855f7;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 24px;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

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

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 32px;
    gap: 20px;
  }

  .nav__links.open {
    display: flex;
  }

  .nav__hamburger {
    display: flex;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

  .stats {
    gap: 32px;
    padding: 28px;
  }

  .platforms {
    flex-direction: column;
    align-items: center;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact__form-row {
    grid-template-columns: 1fr;
  }

  .hero__cta {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .section { padding: 56px 0; }
  .nav { padding: 14px 20px; }
  .container { padding: 0 16px; }
  .timeline__header { flex-direction: column; }
}