/* ============== APP SHELL ============== */
:root {
  --sidebar-w: 280px;
  --content-pad: clamp(24px, 4vw, 56px);
}

.app {
  background: var(--gray-50);
  color: var(--gray-800);
  min-height: 100vh;
}

.skip-link {
  position: absolute;
  left: 12px; top: 12px;
  background: var(--navy-900);
  color: var(--white);
  padding: 10px 16px;
  border-radius: 8px;
  z-index: 100;
  transform: translateY(-200%);
  transition: transform .2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ============== SIDEBAR ============== */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  background: var(--navy-900);
  color: rgba(255,255,255,.85);
  display: flex;
  flex-direction: column;
  padding: 24px 18px;
  z-index: 40;
  border-right: 1px solid rgba(255,255,255,.06);
}

.sidebar__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 28px;
}
.sidebar__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
}
.sidebar__brand strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
}
.sidebar__brand em {
  display: block;
  font-style: normal;
  font-size: 12px;
  color: rgba(255,255,255,.55);
}
.sidebar__brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(232,182,40,.25), rgba(232,182,40,.05));
  color: var(--gold-300);
  border: 1px solid rgba(232,182,40,.35);
}

.sidebar__close {
  display: none;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.18);
  color: var(--white);
  border-radius: 8px;
  align-items: center;
  justify-content: center;
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.sidebar__nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.75);
  transition: background .2s var(--ease), color .2s var(--ease);
  border: 1px solid transparent;
}
.sidebar__nav a:hover { background: rgba(255,255,255,.05); color: var(--white); }
.sidebar__nav a.is-active {
  background: rgba(46,125,232,.14);
  color: var(--white);
  border-color: rgba(46,125,232,.35);
}
.sidebar__ico {
  width: 22px;
  text-align: center;
  font-size: 16px;
}

.sidebar__progress {
  margin: 16px 0;
  padding: 16px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
}
.sidebar__progress-label {
  display: block;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  margin-bottom: 10px;
}
.progress-bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
  margin-bottom: 10px;
}
.progress-bar__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue-500), var(--gold-500));
  border-radius: 999px;
  transition: width .5s var(--ease);
}
.sidebar__progress-meta {
  font-size: 13px;
  color: rgba(255,255,255,.75);
}
.sidebar__progress-meta strong { color: var(--white); font-weight: 600; }

.sidebar__foot { padding-top: 12px; border-top: 1px solid rgba(255,255,255,.08); }
.sidebar__back {
  font-size: 13px;
  color: rgba(255,255,255,.55);
  transition: color .2s;
}
.sidebar__back:hover { color: var(--white); }

/* ============== TOPBAR (mobile only) ============== */
.topbar {
  display: none;
  position: sticky;
  top: 0; z-index: 30;
  background: var(--navy-900);
  color: var(--white);
  padding: 14px 18px;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.topbar__toggle {
  width: 38px; height: 38px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 8px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 8px;
}
.topbar__toggle span { display: block; width: 18px; height: 2px; background: var(--white); border-radius: 2px; }
.topbar__title { font-size: 14px; letter-spacing: .03em; }

.sidebar__backdrop {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 35;
}

/* ============== CONTENT ============== */
.content {
  margin-left: var(--sidebar-w);
  padding: var(--content-pad);
  max-width: 1080px;
}

.dash-section {
  padding: 40px 0;
  scroll-margin-top: 24px;
}
.dash-section + .dash-section { border-top: 1px solid var(--gray-200); }

.dash-section__head { max-width: 720px; margin-bottom: 32px; }
.dash-section__kicker {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--blue-500);
  background: rgba(46,125,232,.1);
  padding: 5px 11px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.dash-section__kicker--gold { color: var(--gold-600); background: rgba(232,182,40,.14); }
.dash-section__head h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 600;
  margin: 0 0 10px;
  letter-spacing: -.01em;
  color: var(--navy-900);
}
.dash-section__head p { margin: 0; color: var(--gray-600); font-size: 16px; }

/* ============== WELCOME ============== */
.welcome {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 320px);
  gap: 32px;
  margin-bottom: 28px;
  align-items: start;
}
.welcome__kicker {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--blue-500);
  font-weight: 600;
  margin-bottom: 12px;
}
.welcome__title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 600;
  margin: 0 0 14px;
  line-height: 1.1;
  color: var(--navy-900);
  letter-spacing: -.015em;
}
.welcome__lead {
  margin: 0;
  font-size: 16px;
  color: var(--gray-600);
  max-width: 56ch;
}
.welcome__lead strong { color: var(--navy-900); font-weight: 600; }

.welcome__next {
  background: var(--navy-900);
  color: var(--white);
  padding: 22px 24px;
  border-radius: 14px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.05);
}
.welcome__next::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--blue-500);
}
.welcome__next-label {
  display: block;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold-400);
  margin-bottom: 12px;
}
.welcome__next-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: -.01em;
}
.welcome__next-meta {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,.7);
  margin-bottom: 12px;
}
.welcome__next-count {
  display: inline-block;
  padding: 6px 10px;
  background: rgba(46,125,232,.18);
  color: var(--blue-400);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}
.welcome__next-count.is-today { background: rgba(232,182,40,.18); color: var(--gold-400); }
.welcome__next-count.is-past { background: rgba(255,255,255,.08); color: rgba(255,255,255,.55); }

.quick {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.quick a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--navy-900);
  box-shadow: var(--shadow-sm);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.quick a:hover {
  transform: translateY(-2px);
  border-color: var(--blue-500);
  box-shadow: var(--shadow);
}
.quick a span { font-size: 18px; }

/* ============== STEPPER ============== */
.stepper { display: grid; gap: 18px; }

.step {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: opacity .25s var(--ease);
}
.step.is-locked { opacity: 0.78; }
.step.is-locked .objectives { display: none; }
.step.is-locked input[type="checkbox"] { pointer-events: none; }

.step__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 20px 26px;
  background: var(--blue-100);
  border-bottom: 1px solid var(--gray-200);
}
.step__badge {
  display: inline-block;
  padding: 5px 11px;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
  border-radius: 999px;
  background: var(--blue-500);
  color: var(--white);
}
.step__badge--blue { background: var(--blue-500); }
.step__badge--blue-soft { background: var(--blue-400); }
.step__badge--gold { background: var(--gold-500); color: var(--navy-900); }

.step__head h3 {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  margin: 0;
  color: var(--navy-900);
  letter-spacing: -.01em;
}
.step__status {
  font-size: 12px;
  font-weight: 500;
  color: var(--blue-500);
}
.step__status--locked { color: var(--gray-400); }

.objectives {
  padding: 20px 26px 24px;
  display: grid;
  gap: 10px;
}
.objectives label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: background .15s var(--ease);
  user-select: none;
}
.objectives label:hover { background: var(--gray-50); }
.objectives input[type="checkbox"] {
  appearance: none;
  width: 20px; height: 20px;
  margin-top: 2px;
  flex: 0 0 auto;
  border: 2px solid var(--gray-200);
  border-radius: 6px;
  background: var(--white);
  cursor: pointer;
  transition: background .15s var(--ease), border-color .15s var(--ease);
  position: relative;
}
.objectives input[type="checkbox"]:hover { border-color: var(--blue-500); }
.objectives input[type="checkbox"]:checked {
  background: var(--blue-500);
  border-color: var(--blue-500);
}
.objectives input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px; top: 2px;
  width: 5px; height: 10px;
  border: solid var(--white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.objectives label:has(input:checked) span {
  color: var(--gray-400);
  text-decoration: line-through;
}
.objectives span { font-size: 15px; color: var(--gray-800); }

/* ============== LIBRARY ============== */
.library { display: grid; gap: 36px; }
.library__title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 18px;
  color: var(--navy-900);
}
.library__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.lib-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
  position: relative;
}
.lib-card:hover { transform: translateY(-2px); border-color: var(--blue-500); }
.lib-card--locked { opacity: 0.7; }
.lib-card--locked:hover { transform: none; border-color: var(--gray-200); }
.lib-card__type {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
  padding: 3px 8px;
  background: var(--gray-100);
  color: var(--gray-600);
  border-radius: 4px;
  margin-bottom: 12px;
}
.lib-card h4 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--navy-900);
  letter-spacing: -.005em;
}
.lib-card p { margin: 0 0 14px; font-size: 14px; color: var(--gray-600); }
.lib-card__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--blue-500);
}
.lib-card__link[aria-disabled="true"] { color: var(--gray-400); pointer-events: none; }

/* ============== KIT ============== */
.kit {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.kit__card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.kit__card::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--blue-500);
}
.kit__card:nth-child(2)::before { background: var(--blue-400); }
.kit__card:nth-child(3)::before { background: var(--gold-500); }
.kit__card:nth-child(4)::before { background: var(--blue-500); }
.kit__card:nth-child(5)::before { background: var(--gold-500); }
.kit__card:hover { transform: translateY(-3px); border-color: var(--blue-500); }
.kit__ico { font-size: 26px; }
.kit__card h4 {
  font-family: var(--font-serif);
  margin: 12px 0 6px;
  font-size: 18px;
  font-weight: 600;
  color: var(--navy-900);
}
.kit__card p { margin: 0 0 14px; font-size: 14px; color: var(--gray-600); }
.kit__link {
  font-size: 14px; font-weight: 500; color: var(--blue-500);
}
.kit__link[aria-disabled="true"] { color: var(--gray-400); pointer-events: none; }

/* ============== CHALLENGES ============== */
.challenge-list { display: grid; gap: 16px; }
.challenge {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.challenge::before {
  content: "";
  position: absolute; inset: 0 auto 0 0; width: 4px;
  background: var(--gray-200);
}
.challenge--open::before { background: var(--blue-500); }
.challenge__head { margin-bottom: 10px; }
.challenge__week {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--gray-400);
  margin-bottom: 6px;
}
.challenge--open .challenge__week { color: var(--blue-500); }
.challenge h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  margin: 0;
  color: var(--navy-900);
  letter-spacing: -.005em;
}
.challenge p { margin: 0 0 16px; font-size: 15px; color: var(--gray-600); }
.challenge__lock {
  display: inline-block;
  font-size: 13px;
  color: var(--gray-400);
}

/* ============== CASE MW ============== */
.case {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 220px 1fr;
}
.case__media {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  position: relative;
}
.case__media::after {
  content: "Caso de éxito";
  position: absolute;
  top: 14px; left: 14px;
  background: var(--gold-500);
  color: var(--navy-900);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
}
.case__media img {
  background: var(--white);
  padding: 10px 14px;
  border-radius: 10px;
  max-width: 160px;
}
.case__body { padding: 28px 32px; }
.case__body h3 {
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--navy-900);
}
.case__body p { margin: 0 0 22px; color: var(--gray-600); font-size: 15px; }
.case__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 0 0 22px;
  padding: 18px;
  background: var(--blue-100);
  border-radius: 12px;
}
.case__metrics li { text-align: center; }
.case__metrics strong {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--blue-500);
  margin-bottom: 4px;
}
.case__metrics span { font-size: 12px; color: var(--gray-600); }

.case__body h4 {
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--gray-400);
  margin: 0 0 12px;
}
.case__steps { display: grid; gap: 10px; padding: 0; counter-reset: cstep; }
.case__steps li {
  position: relative;
  padding-left: 36px;
  font-size: 15px;
  color: var(--gray-800);
  counter-increment: cstep;
}
.case__steps li::before {
  content: counter(cstep);
  position: absolute;
  left: 0; top: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--blue-500);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}

/* ============== SUPPORT ============== */
.support {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.support__card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.support__card:hover { transform: translateY(-3px); border-color: var(--blue-500); }
.support__ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: var(--blue-100);
  border-radius: 10px;
  font-size: 22px;
  margin-bottom: 14px;
}
.support__card h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--navy-900);
}
.support__card p {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--gray-800);
  font-weight: 500;
}
.support__meta {
  font-size: 12px;
  color: var(--gray-400);
}

/* ============== FOOTER ============== */
.dash-footer {
  padding: 32px 0;
  margin-top: 32px;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-400);
}

/* ============== RESPONSIVE ============== */
@media (max-width: 960px) {
  .welcome { grid-template-columns: 1fr; }
  .case { grid-template-columns: 1fr; }
  .case__media { padding: 20px; }
  .case__metrics { grid-template-columns: 1fr; gap: 8px; padding: 14px; }
}

@media (max-width: 760px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform .25s var(--ease);
    width: min(320px, 90vw);
  }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar__close { display: inline-flex; }

  .topbar { display: flex; }
  .sidebar__backdrop[hidden] { display: none; }
  .sidebar__backdrop { display: block; }

  .content {
    margin-left: 0;
    padding: 20px 18px 40px;
  }

  .step__head {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 20px;
  }
  .step__status { justify-self: start; }
  .objectives { padding: 16px 20px 20px; }
}