/* =========================================================
   Ambar Quintana — Portfolio
   ========================================================= */

:root {
  /* Brand */
  --color-primary: #6c4fe0;
  --color-primary-dark: #5638c7;
  --color-primary-light: #efeafd;

  /* Light theme surface */
  --color-bg: #ffffff;
  --color-bg-alt: #f6f6fb;
  --color-card: #ffffff;
  --color-border: #e7e6f0;
  --color-border-strong: rgba(20, 20, 43, 0.22);

  /* Light theme text */
  --color-text: #14142b;
  --color-text-secondary: #5c5b73;
  --color-text-muted: #8b8a9c;

  --color-footer-bg: #100f1e;
  --color-footer-text: #c9c8d6;
  --color-footer-border: #2a293f;

  --shadow-sm: 0 1px 2px rgba(20, 20, 43, 0.06);
  --shadow-md: 0 8px 24px rgba(20, 20, 43, 0.08);
  --shadow-lg: 0 16px 40px rgba(20, 20, 43, 0.12);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --header-h: 72px;
  --profile-content-width: 600px;
}

:root[data-theme="dark"] {
  --color-primary: #8b6bf5;
  --color-primary-dark: #7452e8;
  --color-primary-light: #241f3d;

  --color-bg: #0f0e1c;
  --color-bg-alt: #161527;
  --color-card: #1b1a30;
  --color-border: #2a293f;
  --color-border-strong: #2a293f;

  --color-text: #f2f1fb;
  --color-text-secondary: #b4b3c6;
  --color-text-muted: #85849a;

  --color-footer-bg: #08070f;
  --color-footer-text: #b4b3c6;
  --color-footer-border: #221f36;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
}

/* NOTE: intentionally mirrors :root[data-theme="dark"] above (not dead duplication).
   This block styles the initial paint for OS-dark-mode visitors before script.js
   runs and sets the explicit data-theme attribute, preventing a flash of the
   light theme. Keep both blocks in sync if the dark palette changes. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #8b6bf5;
    --color-primary-dark: #7452e8;
    --color-primary-light: #241f3d;

    --color-bg: #0f0e1c;
    --color-bg-alt: #161527;
    --color-card: #1b1a30;
    --color-border: #2a293f;
    --color-border-strong: #2a293f;

    --color-text: #f2f1fb;
    --color-text-secondary: #b4b3c6;
    --color-text-muted: #85849a;

    --color-footer-bg: #08070f;
    --color-footer-text: #b4b3c6;
    --color-footer-border: #221f36;
  }
  :root:not([data-theme="light"]) .perfil-section { background-image: none; }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, dl, dd { margin: 0; }

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
#portafolio { background: var(--color-bg); }
#habilidades { background: var(--color-bg-alt); }
#experiencia { background: var(--color-bg); }
#contacto { background: var(--color-bg-alt); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.eyebrow i { width: 14px; height: 14px; }
.eyebrow.location { color: var(--color-text-secondary); text-transform: none; letter-spacing: normal; font-weight: 600; margin-bottom: 24px; }
.eyebrow.location i { width: 15px; height: 15px; color: var(--color-primary); }
.eyebrow-sm { font-size: 8px; }
.eyebrow-dash { letter-spacing: normal; }

.section-title {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 60px;
}
.section-intro {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 620px;
  margin-top: -40px;
  margin-bottom: 40px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease, border-color .15s ease;
  white-space: nowrap;
}
.btn i { width: 17px; height: 17px; }
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm), 0 0 6px 0px color-mix(in srgb, var(--color-primary) 45%, transparent);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md), 0 0 9px 0px color-mix(in srgb, var(--color-primary) 55%, transparent);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-dark {
  background: var(--color-text);
  color: var(--color-bg);
}
.btn-dark:hover { background: var(--color-primary); color: #fff; }

.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
}
.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(to right, var(--color-primary), transparent);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 32px;
}
.logo {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.accent-purple { color: var(--color-primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}
.main-nav a {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.main-nav a:hover { color: var(--color-primary); }
.main-nav a.is-active {
  color: var(--color-text);
  border-bottom-color: var(--color-primary);
}

.header-actions { display: flex; align-items: center; gap: 12px; }

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.theme-toggle i { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ---------- Perfil ---------- */
.perfil-section {
  background-image: linear-gradient(rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.72)), url('../img/fondo.svg');
  background-repeat: no-repeat;
  background-position: top center;
  background-size: cover;
}
:root[data-theme="dark"] .perfil-section { background-image: none; }
.perfil-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 120px;
  align-items: center;
}
.perfil-photo-wrap {
  position: relative;
}
.perfil-dots {
  position: absolute;
  top: calc(50% - 84px);
  left: -40px;
  width: 168px;
  height: 168px;
  background-image: radial-gradient(var(--color-primary) 2.5px, transparent 3px);
  background-size: 28px 28px;
  opacity: 0.55;
  z-index: 0;
  pointer-events: none;
}
.perfil-photo-frame {
  position: relative;
  z-index: 1;
  border-radius: 50%;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  box-shadow: var(--shadow-lg);
  border: 6px solid var(--color-card);
}
.perfil-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.perfil-name {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.perfil-title {
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 26px;
}
.perfil-description {
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--color-text-secondary);
  max-width: var(--profile-content-width);
  margin-bottom: 40px;
}

.metrics {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  width: 100%;
  max-width: var(--profile-content-width);
  margin-top: 24px;
  margin-bottom: 40px;
  padding-top: 24px;
  padding-bottom: 24px;
  border-top: 1px solid var(--color-border-strong);
  border-bottom: 1px solid var(--color-border-strong);
}
.metric dt {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 10px;
}
.metric dd {
  font-size: 13px;
  color: var(--color-text-muted);
  max-width: 18ch;
  margin-top: 2px;
}

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

/* ---------- Portafolio ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 20px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  transition: all .15s ease;
}
.filter-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s ease, transform .2s ease;
}
.project-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.project-card.is-hidden { display: none; }

.project-image {
  aspect-ratio: 2 / 1;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.project-body { padding: 15px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.project-body .btn-block { margin-top: 10px; font-size: 12px; padding: 9px 16px; }
.project-body .btn-block i { width: 14px; height: 14px; }
.project-tags {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px;
}
.project-tag {
  align-self: flex-start;
  font-size: 10px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: 999px;
}
.project-body h3 { font-size: 14px; font-weight: 700; }
.project-body p { font-size: 12px; line-height: 1.55; color: var(--color-text-secondary); flex: 1; }

/* ---------- Habilidades ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.skill-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.skill-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}
.skill-info h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.skill-info p { font-size: 12.5px; line-height: 1.4; color: var(--color-text-secondary); }

/* ---------- Experiencia (timeline) ---------- */
.timeline {
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 11px;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 24px 96px 1fr;
  gap: 24px;
  padding-bottom: 44px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker {
  display: flex;
  justify-content: center;
  padding-top: 4px;
}
.timeline-dot {
  position: relative;
  z-index: 1;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-card);
  border: 3px solid var(--color-primary);
}
.timeline-period {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding-top: 4px;
  white-space: nowrap;
}
.timeline-content h3 { font-size: 17px; font-weight: 700; margin-bottom: 5px; color: var(--color-primary)}
.timeline-content .role {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}
.timeline-content .location {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 15px;
}
.timeline-content .achievements {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 18px;
}
.timeline-content .achievements li {
  position: relative;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}
.timeline-content .achievements li::before {
  content: '•';
  position: absolute;
  left: -18px;
  color: var(--color-text-muted);
}

/* ---------- Contacto ---------- */
.contacto-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 56px;
  align-items: stretch;
}
.contacto-photo-wrap { display: flex; flex-direction: column; align-items: center; gap: 20px; height: 100%; }
.contacto-photo {
  width: 100%;
  flex: 1;
  min-height: 0;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.contacto-social { display: flex; gap: 12px; }
.social-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .15s ease;
}
.social-btn i { width: 18px; height: 18px; }
.social-btn:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.contacto-content p {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
}
.contacto-content .btn { margin-top: 8px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding-top: 64px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 96px;
  padding-bottom: 40px;
}
.footer-col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col p { font-size: 14px; line-height: 1.6; margin-bottom: 12px; }
.footer-col a {
  display: block;
  font-size: 14px;
  margin-bottom: 10px;
  color: var(--color-footer-text);
  transition: color .15s ease;
}
.footer-col a:hover { color: #fff; }

h4.footer-name { font-size: 16px; margin-bottom: 2px; }
p.footer-role { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; }
p.footer-tagline { font-size: 14px; line-height: 1.6; margin-top: 0; margin-bottom: 20px; max-width: 260px; }

.footer-social-icons { display: flex; gap: 10px; }
.footer-social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-footer-border);
  margin-bottom: 0;
}
.footer-social-icons a:hover { background: var(--color-primary); border-color: var(--color-primary); }
.footer-social-icons a i { width: 16px; height: 16px; }

.footer-pages h4,
.footer-social h4 {
  font-size: 10px;
  color: #c9c8d6;
  margin-bottom: 20px;
}
.footer-pages a,
.footer-social a {
  font-size: 13px;
}
.footer-pages a.is-active { color: #fff; font-weight: 700; }

.footer-social .footer-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.footer-social .footer-contact-item i { width: 16px; height: 16px; flex-shrink: 0; }

.footer-bottom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px 24px;
  border-top: 1px solid var(--color-footer-border);
  font-size: 12.5px;
  color: var(--color-text-muted);
}
.footer-copyright { text-align: center; margin: 0; }
.scroll-top-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .15s ease;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}
.scroll-top-btn:hover { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.scroll-top-btn i { width: 16px; height: 16px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .perfil-grid { grid-template-columns: 1fr; text-align: center; }
  .perfil-photo-wrap { display: flex; justify-content: center; }
  .perfil-photo-frame { width: 260px; }
  .metrics { justify-content: center; margin-inline: auto; }
  .cta-row { justify-content: center; }
  .eyebrow.location { justify-content: center; }

  .contacto-grid { grid-template-columns: 1fr; }
  .contacto-photo-wrap { flex-direction: row; height: auto; }
  .contacto-photo { width: 160px; flex: none; aspect-ratio: 1 / 1; }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-about { grid-column: 1 / -1; }

  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  body.nav-open .main-nav {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 20px 24px;
    gap: 18px;
  }
  .timeline-item { grid-template-columns: 20px 72px 1fr; gap: 12px; padding-bottom: 32px; }
  .section { padding: 64px 0; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .contacto-photo-wrap { flex-direction: column; height: auto; }
  .contacto-photo { width: 200px; flex: none; aspect-ratio: 1 / 1; }

  .project-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }

  .footer-bottom { flex-direction: column; gap: 14px; }
}