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

:root {
  --bg: #0a0e14;
  --blue: #64d2ff;
  --text: #f0f6fc;
  --muted: #c9d1d9;
  --soft: #8b949e;
  --border: rgba(100,210,255,0.22);
  --mono: 'JetBrains Mono', monospace;
}

html { overflow: hidden; }

body {
  background-color: #0a0e14;
  background-image:
    linear-gradient(rgba(10,14,20,0.45), rgba(10,14,20,0.45)),
    url('recursos/img/k2.jpg');
  background-size: cover;
  background-position: center top;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  height: 100vh;
  overflow: hidden;
}

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

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: 1.5rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10,14,20,0.35);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.12em;
  transition: color 0.15s;
  cursor: pointer;
}

.nav-links a:hover { color: var(--text); }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  background: rgba(10,14,20,0.3);
}

.lang-btn {
  font-family: var(--mono);
  font-size: 12px;
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: 0.12em;
  padding: 0.2rem 0.4rem;
  color: var(--soft);
  transition: color 0.15s;
}

.lang-btn.active { color: var(--blue); font-weight: 700; }
.lang-btn:not(.active):hover { color: var(--muted); }

/* DOTS */
.scroll-dots {
  position: fixed;
  right: 2.5rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 100;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(100,210,255,0.35);
  cursor: pointer;
  transition: all 0.3s;
}

.dot.active {
  background: var(--blue);
  transform: scale(1.5);
}

/* SECTIONS */
.sections {
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
}

.sections::-webkit-scrollbar { display: none; }
.sections { -ms-overflow-style: none; scrollbar-width: none; }

.page {
  height: 100vh;
  scroll-snap-align: start;
  display: flex;
  align-items: stretch;
}

.page-inner {
  width: 100%;
  padding: 7rem 6rem 3rem;
  background: rgba(10,14,20,0.45);
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

/* HERO */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 5rem;
  align-items: stretch;
  margin-bottom: 2.5rem;
}

.hero-left {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-right {
  display: flex;
  flex-direction: column;
  padding-top: 0;
  align-self: stretch;
}

.hero-about {
  flex: 1;
  display: flex;
  flex-direction: column;
  font-size: 15px;
  color: var(--muted);
  line-height: 2.3;
  font-weight: 300;
}

.hero-about p + p { margin-top: 0; }

.hero-pixel-art { display: none; }

/* CHAT WIDGET */
.hero-chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  margin-top: 1rem;
  border: 1px solid rgba(100,210,255,0.2);
  position: relative;
  overflow: hidden;
}

.hero-chat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    transparent,
    transparent 1px,
    rgba(0,0,0,0.03) 1px,
    rgba(0,0,0,0.03) 2px
  );
  pointer-events: none;
  z-index: 2;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.7rem;
  background: #0a0f1a;
  border-bottom: 1px solid rgba(100,210,255,0.2);
  flex-shrink: 0;
}

.chat-header-title,
.chat-header-status {
  font-size: 10px;
  color: rgba(100,210,255,0.6);
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.8;
  font-weight: 300;
  padding: 0.5rem 0.7rem 0 0.7rem;
}

.chat-messages::-webkit-scrollbar { width: 3px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: rgba(100,210,255,0.2); }

.chat-msg-user {
  color: var(--blue);
  margin-bottom: 0.35rem;
  white-space: pre-wrap;
  word-break: break-word;
  text-shadow: 0 0 4px rgba(100,210,255,0.2);
}

.chat-msg-ai {
  color: var(--muted);
  margin-bottom: 0.35rem;
  white-space: pre-wrap;
  word-break: break-word;
  text-shadow: 0 0 4px rgba(100,210,255,0.2);
}

.chat-msg-loading {
  color: var(--soft);
  margin-bottom: 0.35rem;
  font-style: italic;
  text-shadow: 0 0 4px rgba(100,210,255,0.2);
}

.chat-msg-error {
  color: var(--soft);
  margin-bottom: 0.35rem;
  text-shadow: 0 0 4px rgba(100,210,255,0.2);
}

.chat-divider {
  height: 1px;
  background: var(--border);
  margin: 0.5rem 0;
  flex-shrink: 0;
}

.chat-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  padding: 0.3rem 0.7rem 0.5rem 0.7rem;
  background: rgba(0,188,212,0.03);
}

.chat-prompt {
  color: var(--blue);
  font-size: 13px;
  font-weight: 400;
  flex-shrink: 0;
}

.chat-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  padding: 0.3rem 0;
}

.chat-input::placeholder {
  color: var(--soft);
  font-style: italic;
  text-shadow: 0 0 4px rgba(100,210,255,0.2);
}

.chat-send {
  background: none;
  border: 1px solid var(--border);
  color: var(--blue);
  font-family: var(--mono);
  font-size: 13px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
}

.chat-send:hover {
  border-color: var(--blue);
  background: rgba(100,210,255,0.08);
}

.chat-send:disabled {
  opacity: 0.4;
  cursor: default;
}

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

.blink {
  animation: blink 1s step-end infinite;
}


.hero-links { display: flex; gap: 0.75rem; }

.link-outline {
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 0.7rem 1.6rem;
  color: var(--muted);
  border: 1px solid rgba(100,210,255,0.3);
  background: rgba(10,14,20,0.4);
  transition: all 0.15s;
}

.link-outline:hover { border-color: var(--text); color: var(--text); }

.link-fill {
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 0.7rem 1.6rem;
  background: var(--blue);
  color: #0a0e14;
  font-weight: 700;
  border: 1px solid var(--blue);
  transition: opacity 0.15s;
}

.link-fill:hover { opacity: 0.85; }

/* HERO PROJECT CARD */
.hero-project-card {
  border: 1px solid rgba(100,210,255,0.35);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: rgba(10,14,20,0.55);
}

.hero-project-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.hero-project-label {
  font-size: 9px;
  color: var(--blue);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: 0.2rem;
}

.hero-project-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--blue);
}

.hero-project-desc {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.7;
  font-weight: 300;
}

.hero-project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  margin-top: 0.25rem;
}

.status-footer-label { font-size: 10px; color: var(--muted); font-weight: 300; }
.status-available { font-size: 10px; color: #3fb950; }

/* SEE MORE BTN */
.see-more-btn {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  color: var(--blue);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 1px solid rgba(100,210,255,0.3);
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: all 0.15s;
  align-self: flex-start;
}

.see-more-btn:hover {
  background: rgba(100,210,255,0.08);
  border-color: var(--blue);
}

/* SCROLL HINT */
.scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  user-select: none;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  transition: transform 0.2s ease;
}

.scroll-hint:hover { transform: translateY(4px); }

.scroll-hint-label {
  font-size: 11px;
  color: var(--text);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 500;
}

.scroll-hint-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.scroll-hint-arrow span {
  display: block;
  width: 14px;
  height: 14px;
  border-right: 2px solid var(--blue);
  border-bottom: 2px solid var(--blue);
  transform: rotate(45deg);
  opacity: 0;
  animation: chevron 1.6s ease-in-out infinite;
}

.scroll-hint-arrow span:nth-child(1) { animation-delay: 0s; }
.scroll-hint-arrow span:nth-child(2) { animation-delay: 0.2s; }
.scroll-hint-arrow span:nth-child(3) { animation-delay: 0.4s; }

@keyframes chevron {
  0%   { opacity: 0; transform: rotate(45deg) translate(-3px,-3px); }
  50%  { opacity: 1; }
  100% { opacity: 0; transform: rotate(45deg) translate(3px,3px); }
}

/* SECTION HEADER */
.section-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text);
}

.section-title em {
  color: var(--blue);
  font-weight: 400;
  font-style: normal;
  margin-right: 0.3rem;
}

/* PROJECT IMAGE */
.project-image-wrap {
  width: 100%;
  height: 120px;
  margin-bottom: 1rem;
  overflow: hidden;
  border: 1px solid var(--border);
}

.project-image-wrap.small {
  height: 80px;
}

.project-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.project-image-wrap:hover img { opacity: 1; }

.project-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(100,210,255,0.04);
  font-size: 9px;
  color: var(--soft);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* FEATURED PROJECT */
.project-featured {
  position: relative;
  padding: 1.5rem;
  border: 1px solid rgba(100,210,255,0.4);
  margin-bottom: 1rem;
  background: rgba(100,210,255,0.06);
  transition: all 0.2s;
}

.project-featured:hover {
  border-color: var(--blue);
  background: rgba(100,210,255,0.1);
  transform: translateY(-2px);
}

.project-featured-badge {
  position: absolute;
  top: -1px;
  right: 1.5rem;
  font-size: 8px;
  letter-spacing: 0.2em;
  color: #0a0e14;
  background: var(--blue);
  padding: 0.2rem 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.project {
  padding: 1.25rem;
  border: 1px solid var(--border);
  transition: all 0.15s;
  background: rgba(10,14,20,0.5);
}

.project:hover {
  border-color: rgba(100,210,255,0.4);
  transform: translateY(-2px);
  background: rgba(10,14,20,0.7);
}

.project:hover .project-name { color: #a8d4f0; }

.project-placeholder {
  opacity: 0.45;
  cursor: default;
}

.project-placeholder:hover {
  transform: none;
  border-color: var(--border);
  background: rgba(10,14,20,0.5);
}

.project-placeholder .project-btns a {
  pointer-events: none;
  opacity: 0.4;
}

.placeholder-name {
  color: var(--soft) !important;
  font-style: italic;
}

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
}

.project-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  transition: color 0.15s;
}

.project-featured .project-name { font-size: 16px; }

.project-status {
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 0.15em;
  border: 1px solid var(--border);
  padding: 0.15rem 0.5rem;
}

.project-desc {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.75;
  font-weight: 300;
  margin-bottom: 0.75rem;
}

.project-wip {
  max-width: 600px;
  margin: 1.5rem auto 0;
  padding: 1.75rem 2rem;
}

.project-wip .project-name {
  font-size: 15px;
}

.project-wip .project-desc {
  font-size: 12px;
  line-height: 2;
  margin-bottom: 1rem;
}

.project-featured .project-desc { font-size: 12px; }

.collab-link { color: var(--blue); transition: color 0.15s; }
.collab-link:hover { color: #a8d4f0; }

.project-tags {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.ptag {
  font-size: 9px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.15rem 0.5rem;
  background: rgba(10,14,20,0.4);
}

.project-btns { display: flex; gap: 0.4rem; flex-wrap: wrap; }

.pbtn-demo {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  padding: 0.4rem 0.9rem;
  background: var(--blue);
  color: #0a0e14;
  border: 1px solid var(--blue);
  cursor: pointer;
  font-weight: 700;
  transition: opacity 0.15s;
}

.pbtn-demo:hover { opacity: 0.8; }

.pbtn-repo {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  padding: 0.4rem 0.9rem;
  background: rgba(10,14,20,0.5);
  color: var(--muted);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.15s;
}

.pbtn-repo:hover { border-color: var(--muted); color: var(--text); }

.pbtn-video {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  padding: 0.4rem 0.9rem;
  background: transparent;
  color: var(--blue);
  border: 1px solid rgba(100,210,255,0.3);
  cursor: pointer;
  transition: all 0.15s;
}

.pbtn-video:hover { background: rgba(100,210,255,0.08); border-color: var(--blue); }

/* PROJECTS CTA */
.projects-cta {
  padding: 1rem 1.25rem;
  border: 1px solid rgba(100,210,255,0.18);
  background: rgba(10,14,20,0.5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.projects-cta-text p {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text);
}

.projects-cta-links { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }

.cta-email {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 11px;
  color: var(--muted);
  font-weight: 300;
  transition: color 0.15s;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  background: rgba(10,14,20,0.4);
}

.cta-email:hover { color: var(--text); }

.cta-copy {
  font-size: 9px;
  color: var(--soft);
  letter-spacing: 0.08em;
  transition: color 0.15s;
}

.cta-email:hover .cta-copy { color: var(--blue); }
.cta-copy.copied { color: #3fb950; }

.cta-linkedin {
  font-size: 11px;
  color: var(--blue);
  letter-spacing: 0.06em;
  padding: 0.5rem 0.9rem;
  border: 1px solid rgba(100,210,255,0.3);
  transition: all 0.15s;
  font-weight: 500;
  background: rgba(10,14,20,0.4);
}

.cta-linkedin:hover { background: rgba(100,210,255,0.08); border-color: var(--blue); }

/* STACK */
.stack-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.stack-col { display: flex; flex-direction: column; gap: 2.5rem; }
.stack-group { display: flex; flex-direction: column; gap: 1rem; }

.stack-group-full {
  align-items: center;
  text-align: center;
  padding-top: 2rem;
  margin-top: 1rem;
  border-top: 1px solid var(--border);
}

.stack-group-label {
  font-size: 12px;
  color: var(--blue);
  letter-spacing: 0.2em;
  font-weight: 400;
  text-transform: uppercase;
  opacity: 0.9;
}

.stack-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.stag {
  font-size: 13px;
  color: var(--muted);
  background: rgba(10,14,20,0.55);
  border: 1px solid rgba(100,210,255,0.18);
  padding: 0.5rem 1rem;
  letter-spacing: 0.04em;
  transition: all 0.15s;
  cursor: default;
}

.stag:hover {
  color: var(--text);
  background: rgba(10,14,20,0.8);
  border-color: rgba(100,210,255,0.45);
  transform: translateY(-1px);
}

/* CONTACT */
.page-inner-contact { justify-content: center; }

.contact-availability {
  font-size: 13px;
  color: var(--muted);
  font-weight: 300;
  margin-bottom: 1.5rem;
  padding-left: 0.75rem;
  border-left: 2px solid var(--blue);
}

.contact-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem 2rem;
  border: 1px solid var(--border);
  border-bottom: none;
  font-size: 14px;
  color: var(--muted);
  font-weight: 300;
  transition: all 0.15s;
  background: rgba(10,14,20,0.5);
}

.contact-row:last-of-type {
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.contact-row:hover {
  border-color: rgba(100,210,255,0.4);
  color: var(--text);
  background: rgba(10,14,20,0.75);
}

.contact-arrow { font-size: 16px; color: var(--soft); transition: color 0.15s; }
.contact-row:hover .contact-arrow { color: var(--blue); }

.contact-email { cursor: pointer; }

.contact-copy {
  font-size: 11px;
  color: var(--soft);
  letter-spacing: 0.08em;
  transition: color 0.15s;
}

.contact-email:hover .contact-copy { color: var(--blue); }
.contact-copy.copied { color: #3fb950; }

.footer-note {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-align: center;
  margin-top: auto;
  padding-top: 2rem;
}

#projects .page-inner,
#stack .page-inner {
  justify-content: flex-start;
}

/* UTILS */
.hidden { display: none; }

/* RESPONSIVE */
@media (max-width: 1100px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .stack-cols { grid-template-columns: 1fr; }
  .page-inner { padding: 5rem 2.5rem 2rem; }
  nav { padding: 1.25rem 2.5rem; }
  .scroll-dots { display: none; }
}

@media (max-width: 600px) {
  .nav-links { display: none; }
  .page-inner { padding: 5rem 1.5rem 1.5rem; }
  nav { padding: 1rem 1.5rem; }
  .projects-grid { grid-template-columns: 1fr; }
}