/* ═══════════════════════════════════════════════════
   ARTIVA SPARK — artiva-spark.css
   Versión: 1.0.0
═══════════════════════════════════════════════════ */

/* ── TOKENS SPARK ── */
:root {
  --spark-v:     #7421fc;
  --spark-vd:    #5a0ed4;
  --spark-vm:    #9e3ffd;
  --spark-vl:    #c89ffe;
  --spark-vw:    #f0e8ff;
  --spark-pk:    #e221fc;
  --spark-pkd:   #c010e0;
  --spark-pkl:   #ed5afd;
  --spark-pkw:   #fce8ff;
  --spark-pkww:  #fef4ff;
  --spark-dark:  #1b1b1b;
  --spark-dark2: #222222;
  --spark-dline: rgba(255,255,255,.07);
  --spark-bg2:   #f7f4ee;
  --spark-gy2:   #9a9790;
  --spark-gl2:   #e2dfd8;
  --spark-line2: rgba(27,27,27,.11);
  --spark-sh-sm: 0 1px 3px rgba(27,27,27,.06), 0 1px 2px rgba(27,27,27,.04);
  --spark-sh:    0 4px 16px rgba(27,27,27,.08), 0 1px 4px rgba(27,27,27,.04);
  --spark-sh-v:  0 8px 28px rgba(116,33,252,.22), 0 2px 8px rgba(116,33,252,.10);
  --spark-sh-pk: 0 8px 24px rgba(226,33,252,.22), 0 2px 8px rgba(226,33,252,.08);
}

/* ── RESET SPARK (scope) ── */
.spark-page a { text-decoration: none; color: inherit; }
.spark-page img { display: block; }

/* ── SCROLL REVEAL ── */
.spark-rev {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s ease;
}
.spark-rev.spark-vis {
  opacity: 1;
  transform: translateY(0);
}

/* ── HERO ── */
.spark-hero {
  text-align: center;
  padding: 110px 48px 92px;
  position: relative;
  min-height: 78vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--spark-dark);
}
.spark-hero-mesh { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.spark-hero-mesh::before {
  content: '';
  position: absolute;
  top: -5%; left: -10%;
  width: 65%; height: 70%;
  background: radial-gradient(ellipse, rgba(116,33,252,.22) 0%, transparent 60%);
  filter: blur(80px);
}
.spark-hero-mesh::after {
  content: '';
  position: absolute;
  bottom: -10%; right: -10%;
  width: 70%; height: 70%;
  background: radial-gradient(ellipse, rgba(116,33,252,.18) 0%, transparent 58%);
  filter: blur(90px);
}
.spark-hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, transparent 30%, black 100%);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, transparent 30%, black 100%);
  pointer-events: none;
  z-index: 0;
}
.spark-hero > * { position: relative; z-index: 1; }

.spark-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border: 1px solid rgba(116,33,252,.25);
  border-radius: 50px;
  font-size: 12.5px;
  color: rgba(255,255,255,.5);
  margin-bottom: 28px;
  background: rgba(116,33,252,.08);
  backdrop-filter: blur(12px);
  animation: sparkFadeUp .6s ease-out both;
}
.spark-hero__eyebrow strong { color: var(--spark-vl); font-weight: 700; }
.spark-hero__eyebrow-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--spark-pk);
  animation: sparkPulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
.spark-hero__h {
  font-family: 'Anton', sans-serif;
  font-size: clamp(64px, 10vw, 124px);
  line-height: .9;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: -.02em;
  animation: sparkFadeUp .6s ease-out .1s both;
}
.spark-hero__h .spark-line-pk { color: var(--spark-pkl); display: block; }
.spark-hero__h .spark-line-vl { color: rgba(255,255,255,.85); display: block; }
.spark-hero__sub {
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(255,255,255,.38);
  max-width: 480px;
  margin: 20px auto 36px;
  font-weight: 400;
  animation: sparkFadeUp .6s ease-out .22s both;
}
.spark-hero__btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  animation: sparkFadeUp .6s ease-out .34s both;
}
.spark-btn-pk,
a.spark-btn-pk {
  padding: 15px 44px;
  background: var(--spark-pk);
  color: #fff;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: var(--spark-sh-pk);
  transition: background .22s, transform .2s, box-shadow .22s;
  display: inline-block;
}
.spark-btn-pk:hover, a.spark-btn-pk:hover { background: var(--spark-pkd); transform: translateY(-2px); box-shadow: 0 14px 36px rgba(226,33,252,.35); color: #fff; }
.spark-btn-ghost-w,
a.spark-btn-ghost-w {
  padding: 15px 36px;
  background: rgba(255,255,255,.05);
  color: rgba(255,255,255,.7);
  border: 1.5px solid rgba(255,255,255,.1);
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: all .22s;
  backdrop-filter: blur(8px);
  display: inline-block;
}
.spark-btn-ghost-w:hover, a.spark-btn-ghost-w:hover { border-color: rgba(116,33,252,.4); background: rgba(116,33,252,.08); color: #fff; }

.spark-hero__stats {
  display: flex;
  align-items: stretch;
  margin-top: 56px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 16px;
  overflow: hidden;
  animation: sparkFadeUp .6s ease-out .48s both;
}
.spark-hero__stat {
  padding: 18px 32px;
  text-align: center;
  flex: 1;
  border-right: 1px solid rgba(255,255,255,.06);
}
.spark-hero__stat:last-child { border-right: none; }
.spark-hero__stat-num { font-family: 'Anton', sans-serif; font-size: 30px; color: var(--spark-vl); line-height: 1; }
.spark-hero__stat-lbl { font-size: 11px; font-weight: 600; color: rgba(255,255,255,.28); margin-top: 4px; text-transform: uppercase; letter-spacing: .07em; }

/* ── PILARES ── */
.spark-pilares {
  padding: 96px 48px;
  background: var(--bg);
  border-top: 1px solid var(--line);
}
.spark-sec-head { text-align: center; margin-bottom: 56px; }
.spark-eyebrow {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--spark-gy2);
  margin-bottom: 10px;
  display: block;
}
.spark-sec-title {
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 300;
  color: var(--bk);
  letter-spacing: -.035em;
  line-height: 1.12;
}
.spark-sec-title em { color: var(--spark-v); font-style: normal; }

.spark-pgrid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}
.spark-pcard {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  background: #fff;
  border: 1.5px solid var(--spark-line2);
  box-shadow: var(--spark-sh-sm);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.spark-pcard:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(116,33,252,.10); border-color: rgba(116,33,252,.2); }
.spark-pcard__bar { height: 3px; background: linear-gradient(90deg, var(--spark-v), var(--spark-vm)); width: 0%; transition: width .4s ease; }
.spark-pcard:hover .spark-pcard__bar { width: 100%; }
.spark-pcard__num { position: absolute; top: 16px; right: 16px; font-family: 'Anton', sans-serif; font-size: 48px; color: rgba(27,27,27,.04); line-height: 1; user-select: none; }
.spark-pcard__top { padding: 28px 24px 0; }
.spark-pcard__icon { width: 40px; height: 40px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.spark-pcard__icon svg { width: 18px; height: 18px; }
.spark-pcard:nth-child(1) .spark-pcard__icon { background: var(--spark-vw); color: var(--spark-v); }
.spark-pcard:nth-child(2) .spark-pcard__icon { background: var(--spark-vw); color: var(--spark-vd); }
.spark-pcard:nth-child(3) .spark-pcard__icon { background: var(--spark-pkw); color: var(--spark-pkd); }
.spark-pcard:nth-child(4) .spark-pcard__icon { background: var(--spark-vw); color: var(--spark-v); }
.spark-pcard h3 { font-size: 16px; font-weight: 700; color: var(--bk); margin-bottom: 3px; }
.spark-pcard .spark-sub { font-size: 10.5px; font-weight: 700; color: var(--spark-gy2); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; }
.spark-pcard p { font-size: 13px; line-height: 1.65; color: var(--gy); }
.spark-pcard__bottom { padding: 18px 24px 24px; margin-top: 18px; display: flex; align-items: center; justify-content: space-between; }

.spark-prox-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 20px;
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em;
  background: var(--spark-vw); color: var(--spark-vd);
  border: 1px solid rgba(116,33,252,.15);
}
.spark-prox-badge::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--spark-v); flex-shrink: 0; animation: sparkPulse 2.5s ease-in-out infinite; }
.spark-live-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 20px;
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em;
  background: rgba(116,33,252,.08); color: var(--spark-v);
  border: 1px solid rgba(116,33,252,.15);
}
.spark-live-badge::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--spark-v); flex-shrink: 0; animation: sparkPulse 1.8s ease-in-out infinite; }

.spark-pcard__free-badge {
  display: inline-block; margin-top: 10px;
  padding: 3px 9px; border-radius: 20px;
  font-size: 9px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  background: rgba(116,33,252,.06); color: rgba(116,33,252,.55);
  border: 1px solid rgba(116,33,252,.12);
}

/* ── ARTIVA BRAIN ── */
.spark-brain-section {
  padding: 96px 48px;
  background: var(--spark-bg2);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
}
.spark-brain-card {
  max-width: 1160px;
  margin: 0 auto;
  background: #1b1b1b;
  border-radius: 32px;
  padding: 56px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.06);
}
.spark-brain-card::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 360px; height: 360px;
  background: radial-gradient(ellipse, rgba(116,33,252,.12) 0%, transparent 65%);
  pointer-events: none;
}
.spark-brain-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.spark-brain-text .spark-eyebrow-brain {
  font-size: 11px; font-weight: 800; text-transform: uppercase;
  letter-spacing: .12em; color: var(--spark-vl);
  margin-bottom: 10px; display: block;
}
.spark-brain-text h2 {
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 300; color: #fff; line-height: 1.1;
  letter-spacing: -.035em; margin-bottom: 16px;
}
.spark-brain-text h2 strong { font-weight: 300; color: var(--spark-vl); }
.spark-brain-text p { font-size: 15px; line-height: 1.75; color: rgba(255,255,255,.45); margin-bottom: 28px; }
.spark-brain-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.spark-brain-chip {
  padding: 6px 14px; border-radius: 50px;
  font-size: 12px; font-weight: 600;
  background: rgba(116,33,252,.12); color: var(--spark-vl);
  border: 1px solid rgba(116,33,252,.2);
}
.spark-brain-cta,
a.spark-brain-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; background: var(--spark-v); color: #fff;
  border-radius: 50px; font-size: 14px; font-weight: 700;
  box-shadow: var(--spark-sh-v); transition: background .2s, transform .2s;
}
.spark-brain-cta:hover, a.spark-brain-cta:hover { background: var(--spark-vd); transform: translateY(-2px); color: #fff; }
.spark-brain-cta svg { width: 14px; height: 14px; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; fill: none; }

/* Chat window */
.spark-chat-window {
  background: #0e0b1c;
  border-radius: 20px;
  border: 1px solid rgba(116,33,252,.2);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,.4), 0 0 0 1px rgba(116,33,252,.06);
}
.spark-chat-topbar {
  height: 46px; background: #160d22;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; padding: 0 16px; gap: 10px;
}
.spark-chat-dots { display: flex; gap: 5px; }
.spark-chat-dots span { width: 10px; height: 10px; border-radius: 50%; }
.spark-chat-dots span:nth-child(1) { background: #ff5f57; }
.spark-chat-dots span:nth-child(2) { background: #febc2e; }
.spark-chat-dots span:nth-child(3) { background: #28c840; }
.spark-chat-title { font-size: 12.5px; font-weight: 600; color: rgba(255,255,255,.4); margin-left: 6px; }
.spark-chat-live {
  margin-left: auto; display: inline-flex; align-items: center; gap: 5px;
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--spark-vl);
}
.spark-chat-live span { width: 5px; height: 5px; border-radius: 50%; background: var(--spark-v); animation: sparkPulse 1.5s ease-in-out infinite; }

.spark-chat-messages {
  padding: 20px 16px;
  display: flex; flex-direction: column; gap: 14px;
  min-height: 320px; max-height: 320px; overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: rgba(116,33,252,.2) transparent;
}
.spark-chat-messages::-webkit-scrollbar { width: 4px; }
.spark-chat-messages::-webkit-scrollbar-track { background: transparent; }
.spark-chat-messages::-webkit-scrollbar-thumb { background: rgba(116,33,252,.2); border-radius: 4px; }
.spark-chat-messages::-webkit-scrollbar-thumb:hover { background: rgba(116,33,252,.35); }

.spark-msg { display: flex; gap: 10px; align-items: flex-start; }
.spark-msg.spark-msg-user { flex-direction: row-reverse; }
.spark-msg-avatar {
  width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 800;
}
.spark-msg-avatar.spark-ai { background: linear-gradient(135deg, var(--spark-v), var(--spark-vm)); }
.spark-msg-avatar.spark-ai svg { width: 12px; height: 12px; stroke: #fff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.spark-msg-avatar.spark-user-av { background: rgba(255,255,255,.08); color: rgba(255,255,255,.5); }
.spark-msg-bubble {
  max-width: 78%; padding: 10px 14px; border-radius: 14px;
  font-size: 13px; line-height: 1.65;
}
.spark-msg.spark-msg-ai .spark-msg-bubble { background: #1e1630; border: 1px solid rgba(116,33,252,.12); color: rgba(255,255,255,.75); border-radius: 4px 14px 14px 14px; }
.spark-msg.spark-msg-user .spark-msg-bubble { background: linear-gradient(135deg, var(--spark-v), var(--spark-vm)); color: #fff; border-radius: 14px 4px 14px 14px; }
.spark-msg-bubble code { background: rgba(116,33,252,.15); padding: 1px 6px; border-radius: 4px; font-family: 'Courier New', monospace; font-size: 11.5px; color: var(--spark-vl); }
.spark-msg-bubble strong { color: #fff; font-weight: 700; }

.spark-typing { display: flex; gap: 4px; align-items: center; padding: 4px 0; }
.spark-typing span { width: 5px; height: 5px; border-radius: 50%; background: rgba(116,33,252,.4); }
.spark-typing span:nth-child(1) { animation: sparkBounce 1.2s ease-in-out infinite; }
.spark-typing span:nth-child(2) { animation: sparkBounce 1.2s ease-in-out .15s infinite; }
.spark-typing span:nth-child(3) { animation: sparkBounce 1.2s ease-in-out .3s infinite; }

.spark-chat-input-row {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,.05);
  display: flex; gap: 8px; align-items: center;
}
.spark-chat-input {
  flex: 1; background: #1e1630;
  border: 1px solid rgba(116,33,252,.15); border-radius: 10px;
  padding: 9px 14px; font-size: 13px; color: rgba(255,255,255,.7);
  outline: none; font-family: inherit; transition: border-color .2s;
}
.spark-chat-input::placeholder { color: rgba(255,255,255,.2); }
.spark-chat-input:focus { border-color: rgba(116,33,252,.4); }
.spark-chat-send {
  width: 34px; height: 34px; background: var(--spark-v);
  border: none; border-radius: 9px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: background .2s, transform .2s;
}
.spark-chat-send:hover { background: var(--spark-vd); transform: scale(1.05); }
.spark-chat-send svg { width: 14px; height: 14px; stroke: #fff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.spark-chat-quick { padding: 0 16px 14px; display: flex; gap: 6px; flex-wrap: wrap; }
.spark-chat-quick-btn {
  padding: 5px 12px; background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.07); border-radius: 20px;
  font-size: 11.5px; color: rgba(255,255,255,.35); cursor: pointer;
  font-family: inherit; transition: all .18s;
}
.spark-chat-quick-btn:hover { background: rgba(116,33,252,.1); border-color: rgba(116,33,252,.22); color: var(--spark-vl); }

/* ── PRODUCT ROWS ── */
.spark-prod { padding: 0 48px 8px; background: var(--bg); }
.spark-prod-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 72px;
  max-width: 1140px; margin: 0 auto 88px; align-items: center;
}
.spark-prod-row.spark-rev { direction: rtl; }
.spark-prod-row.spark-rev > * { direction: ltr; }
.spark-prod-mock {
  border-radius: 28px; aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; position: relative;
  border: 1.5px solid var(--spark-line2); box-shadow: var(--spark-sh);
}
.spark-prod-mock img { width: 100%; height: 100%; object-fit: cover; display: block; }
.spark-prod-mock.spark-m1 { background: linear-gradient(135deg, var(--spark-pkww), var(--spark-pkw)); }
.spark-prod-mock.spark-m2 { background: linear-gradient(135deg, var(--spark-vw), #eee4ff); }
.spark-prod-mock.spark-m3 { background: linear-gradient(135deg, var(--spark-pkw), #e0d4ff); }
.spark-prod-mock.spark-m4 { background: linear-gradient(135deg, #eee4ff, var(--spark-vw)); }
.spark-prod-prox {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 50px;
  font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em;
  background: rgba(116,33,252,.06); color: var(--spark-vd);
  border: 1px solid rgba(116,33,252,.14); margin-bottom: 14px;
}
.spark-prod-prox::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--spark-v); flex-shrink: 0; animation: sparkPulse 2.2s ease-in-out infinite; }
.spark-prod-label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 50px;
  font-size: 10.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .07em;
  margin-bottom: 14px; background: var(--spark-vw); color: var(--spark-vd);
  border: 1px solid rgba(116,33,252,.15);
}
.spark-prod-text h2 {
  font-size: clamp(24px, 2.8vw, 38px);
  font-weight: 300; color: var(--bk); line-height: 1.12;
  margin-bottom: 12px; letter-spacing: -.03em;
}
.spark-prod-text h2 strong { font-weight: 300; color: var(--spark-v); }
.spark-prod-text > p { font-size: 14px; line-height: 1.75; color: var(--gy); margin-bottom: 20px; }
.spark-prod-text .spark-feat-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.spark-prod-text .spark-feat-list li { list-style: none; font-size: 13.5px; color: var(--gy); display: flex; align-items: center; gap: 10px; line-height: 1.5; }
.spark-feat-dot { width: 5px; height: 5px; border-radius: 50%; flex-shrink: 0; background: var(--spark-v); }

/* ── EDITOR ── */
.spark-editor-section {
  padding: 88px 48px;
  background: var(--gl);
  border-top: 1px solid var(--spark-line2);
  border-bottom: 1px solid var(--spark-line2);
}
.spark-editor-section .spark-intro { max-width: 500px; margin: 0 auto 48px; text-align: center; }
.spark-editor-section .spark-intro p { font-size: 15px; line-height: 1.75; color: var(--gy); }
.spark-editor-wrap {
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 280px 1fr 1fr;
  border-radius: 24px; overflow: hidden;
  box-shadow: 0 24px 64px rgba(27,27,27,.13);
  min-height: 500px;
  border: 1px solid rgba(27,27,27,.1);
}
.spark-ed-side {
  background: #160d22;
  display: flex; flex-direction: column;
  padding: 22px 18px;
}
.spark-ed-logo { display: flex; align-items: center; gap: 9px; margin-bottom: 24px; }
.spark-ed-logo span { font-family: 'Anton', sans-serif; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--spark-vl); }
.spark-step-list { display: flex; flex-direction: column; gap: 1px; margin-bottom: 20px; }
.spark-step-row { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 9px; cursor: pointer; transition: background .18s; }
.spark-step-row:hover { background: rgba(255,255,255,.04); }
.spark-step-row.spark-s-active { background: rgba(116,33,252,.12); }
.spark-step-badge {
  width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
  background: rgba(255,255,255,.07); color: rgba(255,255,255,.28);
  transition: all .2s;
}
.spark-step-badge.spark-s-done { background: rgba(116,33,252,.12); color: var(--spark-vl); }
.spark-step-badge.spark-s-active { background: var(--spark-v); color: #fff; }
.spark-step-text { font-size: 12.5px; font-weight: 500; color: rgba(255,255,255,.35); transition: color .2s; }
.spark-step-text.spark-s-active { color: rgba(255,255,255,.92); font-weight: 600; }
.spark-step-text.spark-s-done { color: rgba(255,255,255,.22); }
.spark-ed-divider { height: 1px; background: rgba(255,255,255,.06); margin: 4px 0 18px; }

.spark-instr { display: none; flex-direction: column; gap: 11px; flex: 1; }
.spark-instr.spark-instr-active { display: flex; }
.spark-instr__title { font-size: 14.5px; font-weight: 700; color: #fff; line-height: 1.35; }
.spark-instr__desc { font-size: 13px; line-height: 1.7; color: rgba(255,255,255,.42); }
.spark-instr__hint {
  background: rgba(116,33,252,.08);
  border-left: 2px solid rgba(116,33,252,.3);
  padding: 10px 12px; border-radius: 0 8px 8px 0;
  font-size: 12px; color: var(--spark-vl); line-height: 1.65;
}
.spark-instr__hint code { background: rgba(255,255,255,.09); padding: 2px 5px; border-radius: 4px; font-family: 'Courier New', monospace; font-size: 11px; color: #c8adff; }
.spark-instr__btn {
  margin-top: auto; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; background: var(--spark-v); color: #fff;
  border: none; border-radius: 50px; font-size: 13.5px; font-weight: 700;
  cursor: pointer; font-family: inherit; transition: background .22s, transform .2s;
  box-shadow: 0 4px 16px rgba(116,33,252,.25);
}
.spark-instr__btn:hover:not(:disabled) { background: var(--spark-vd); transform: translateY(-1px); }
.spark-instr__btn svg { width: 13px; height: 13px; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; fill: none; }

.spark-ed-code { background: #0f0d1c; display: flex; flex-direction: column; }
.spark-ed-topbar {
  height: 40px; background: #1c192e;
  display: flex; align-items: center; padding: 0 14px; gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,.05); flex-shrink: 0;
}
.spark-ed-dots { display: flex; gap: 5px; }
.spark-ed-dots span { width: 10px; height: 10px; border-radius: 50%; }
.spark-ed-dots span:nth-child(1) { background: #ff5f57; }
.spark-ed-dots span:nth-child(2) { background: #febc2e; }
.spark-ed-dots span:nth-child(3) { background: #28c840; }
.spark-ed-tab {
  font-size: 12px; color: rgba(255,255,255,.28);
  padding: 4px 12px; border-radius: 6px;
  background: rgba(255,255,255,.04);
  font-family: 'Courier New', monospace;
  border: 1px solid transparent;
}
.spark-ed-tab.spark-ed-tab-active { background: rgba(116,33,252,.18); color: var(--spark-vl); border-color: rgba(116,33,252,.18); }
.spark-ed-body { flex: 1; display: flex; overflow: hidden; }
.spark-line-nums {
  padding: 14px 10px 14px 12px; width: 40px; flex-shrink: 0;
  font-size: 12px; font-family: 'Courier New', monospace;
  color: rgba(255,255,255,.12); line-height: 1.65;
  user-select: none; text-align: right;
  background: #0c0a1a; border-right: 1px solid rgba(255,255,255,.04);
  overflow: hidden;
}
#spark-code-input {
  flex: 1; background: transparent; border: none; outline: none; resize: none;
  font-family: 'Courier New', monospace; font-size: 13px;
  line-height: 1.65; color: #d4ccf0;
  padding: 14px 16px 14px 12px; caret-color: var(--spark-vl);
  tab-size: 2; white-space: pre; word-break: normal;
  overflow-x: auto; overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: rgba(116,33,252,.22) transparent;
}
#spark-code-input::-webkit-scrollbar { width: 5px; height: 5px; }
#spark-code-input::-webkit-scrollbar-track { background: transparent; }
#spark-code-input::-webkit-scrollbar-thumb { background: rgba(116,33,252,.22); border-radius: 10px; }
#spark-code-input::-webkit-scrollbar-thumb:hover { background: rgba(116,33,252,.4); }
#spark-code-input::-webkit-scrollbar-corner { background: transparent; }
#spark-code-input::selection { background: rgba(116,33,252,.25); }
.spark-ed-footer {
  height: 40px; background: #1c192e;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 12px; border-top: 1px solid rgba(255,255,255,.05); flex-shrink: 0;
}
.spark-ed-footer__info { font-size: 11px; color: rgba(255,255,255,.18); font-family: 'Courier New', monospace; display: flex; gap: 14px; }
.spark-ed-run {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 18px; background: var(--spark-v); color: #fff;
  border: none; border-radius: 50px; font-size: 13px; font-weight: 700;
  cursor: pointer; font-family: inherit; transition: background .2s, transform .2s;
}
.spark-ed-run:hover { background: var(--spark-vd); transform: translateY(-1px); }
.spark-ed-run svg { width: 12px; height: 12px; fill: #fff; }

.spark-ed-preview { background: var(--bg); display: flex; flex-direction: column; border-left: 1px solid rgba(27,27,27,.08); }
.spark-prev-topbar {
  height: 40px; background: var(--spark-gl2);
  display: flex; align-items: center; padding: 0 14px; gap: 8px;
  border-bottom: 1px solid var(--spark-line2); flex-shrink: 0;
}
.spark-prev-live { display: flex; align-items: center; gap: 5px; font-size: 11.5px; font-weight: 600; color: var(--gy); }
.spark-prev-live span { width: 6px; height: 6px; border-radius: 50%; background: #28c840; }
.spark-prev-label { font-size: 12px; font-weight: 600; color: var(--spark-gy2); flex: 1; text-align: center; }
#spark-preview-frame { flex: 1; border: none; width: 100%; }
.spark-prev-footer {
  height: 40px; background: var(--spark-gl2);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 12px; border-top: 1px solid var(--spark-line2); flex-shrink: 0;
}
.spark-prev-reset {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 14px; background: transparent;
  border: 1px solid var(--spark-line2); border-radius: 50px;
  font-size: 12px; font-weight: 600; color: var(--spark-gy2);
  cursor: pointer; font-family: inherit; transition: border-color .2s, color .2s;
}
.spark-prev-reset:hover { border-color: var(--spark-v); color: var(--spark-v); }
.spark-prev-reset svg { width: 11px; height: 11px; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.spark-prev-status { font-size: 11.5px; color: var(--spark-gy2); font-weight: 500; display: flex; align-items: center; gap: 5px; }
.spark-sdot { width: 6px; height: 6px; border-radius: 50%; background: #28c840; }

/* ── SPARK LEARN DEMO ── */
.spark-sl-demo-section {
  padding: 88px 48px;
  background: #13111f;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,.05);
}
.spark-sl-demo-section::before {
  content: '';
  position: absolute;
  top: -80px; left: 50%; transform: translateX(-50%);
  width: 500px; height: 280px;
  background: radial-gradient(ellipse, rgba(116,33,252,.1) 0%, transparent 70%);
  pointer-events: none;
}
.spark-sl-demo-section > * { position: relative; z-index: 1; }
.spark-sl-demo-intro {
  max-width: 600px; margin: 0 auto 52px;
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.spark-sl-demo-eyebrow { display: inline-flex; align-items: center; gap: 7px; font-size: 10.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; color: var(--spark-vl); }
.spark-sl-demo-title { font-size: clamp(28px, 3.2vw, 42px); font-weight: 300; color: #fff; letter-spacing: -.03em; line-height: 1.15; margin: 0; }
.spark-sl-demo-title em { color: var(--spark-vl); font-style: normal; }
.spark-sl-demo-desc { font-size: 15px; line-height: 1.75; color: rgba(255,255,255,.35); max-width: 480px; }
.spark-sl-demo-wip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 16px; border-radius: 50px;
  border: 1px solid rgba(116,33,252,.22); background: rgba(116,33,252,.08);
  font-size: 11.5px; font-weight: 600; color: var(--spark-vl);
}
.spark-sl-demo-wip-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--spark-v); animation: sparkPulse 2s ease-in-out infinite; }

.spark-sl-demo-shell {
  max-width: 1180px; margin: 0 auto;
  background: #0e0c1a; border-radius: 24px; overflow: hidden;
  border: 1px solid rgba(116,33,252,.16);
  box-shadow: 0 24px 80px rgba(0,0,0,.5), 0 8px 32px rgba(116,33,252,.06);
}
.spark-sl-demo-chrome {
  height: 44px; background: #161426;
  display: flex; align-items: center; padding: 0 16px; gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,.05); flex-shrink: 0;
}
.spark-sl-demo-dots { display: flex; gap: 6px; }
.spark-sl-demo-dots span { width: 10px; height: 10px; border-radius: 50%; }
.spark-sl-demo-dots span:nth-child(1) { background: #ff5f57; }
.spark-sl-demo-dots span:nth-child(2) { background: #febc2e; }
.spark-sl-demo-dots span:nth-child(3) { background: #28c840; }
.spark-sl-demo-tabs { display: flex; gap: 2px; }
.spark-sl-demo-tab { padding: 5px 14px; border-radius: 7px; font-size: 12.5px; font-weight: 500; cursor: pointer; color: rgba(255,255,255,.28); transition: all .2s; }
.spark-sl-demo-tab:hover { background: rgba(255,255,255,.05); color: rgba(255,255,255,.5); }
.spark-sl-demo-tab.spark-active { background: rgba(116,33,252,.14); color: var(--spark-vl); font-weight: 600; }
.spark-sl-demo-chrome-right { margin-left: auto; }
.spark-sl-demo-live-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 20px;
  border: 1px solid rgba(116,33,252,.2); background: rgba(116,33,252,.06);
  font-size: 10px; font-weight: 700; color: var(--spark-vl); text-transform: uppercase; letter-spacing: .07em;
}
.spark-sl-demo-live-pill span { width: 5px; height: 5px; border-radius: 50%; background: var(--spark-v); animation: sparkPulse 2s ease-in-out infinite; }

.spark-sl-demo-app { display: flex; min-height: 540px; }
.spark-sl-demo-sidebar {
  width: 60px; background: #0b091a;
  border-right: 1px solid rgba(255,255,255,.05);
  display: flex; flex-direction: column; align-items: center;
  padding: 14px 0; gap: 2px; flex-shrink: 0;
}
.spark-sl-demo-sidebar-logo { margin-bottom: 16px; }
.spark-sl-demo-nav { display: flex; flex-direction: column; align-items: center; gap: 2px; flex: 1; }
.spark-sl-demo-nav-item { width: 36px; height: 36px; border-radius: 9px; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.2); cursor: pointer; transition: all .18s; }
.spark-sl-demo-nav-item:hover { background: rgba(255,255,255,.05); color: rgba(255,255,255,.45); }
.spark-sl-demo-nav-item.spark-active { background: rgba(116,33,252,.15); color: var(--spark-vl); }
.spark-sl-demo-nav-item svg { width: 16px; height: 16px; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.spark-sl-demo-sep { width: 28px; height: 1px; background: rgba(255,255,255,.05); margin: 6px 0; }

.spark-sl-demo-main { flex: 1; padding: 20px 22px; overflow: hidden; display: flex; flex-direction: column; gap: 14px; }
.spark-sl-demo-search-row { display: flex; gap: 10px; align-items: center; }
.spark-sl-demo-search-box {
  flex: 1; display: flex; align-items: center; gap: 10px;
  background: #1c1a2e; border: 1px solid rgba(116,33,252,.1);
  border-radius: 10px; padding: 9px 14px; transition: border-color .2s;
}
.spark-sl-demo-search-box:hover { border-color: rgba(116,33,252,.25); }
.spark-sl-demo-search-box svg { width: 14px; height: 14px; flex-shrink: 0; }
.spark-sl-demo-search-box span { font-size: 13px; color: rgba(255,255,255,.2); }
.spark-sl-demo-discover-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 20px; background: var(--spark-v); color: #fff;
  border: none; border-radius: 10px; font-size: 13px; font-weight: 700;
  cursor: pointer; font-family: inherit; transition: background .2s, transform .2s; white-space: nowrap;
}
.spark-sl-demo-discover-btn:hover { background: var(--spark-vd); transform: translateY(-1px); }
.spark-sl-demo-discover-btn svg { width: 13px; height: 13px; stroke: #fff; fill: none; flex-shrink: 0; }

.spark-sl-demo-filter-row { display: flex; gap: 6px; flex-wrap: wrap; }
.spark-sl-demo-filter {
  padding: 5px 12px; border-radius: 20px; font-size: 11.5px; font-weight: 500; cursor: pointer;
  background: rgba(255,255,255,.04); color: rgba(255,255,255,.35);
  border: 1px solid rgba(255,255,255,.06); transition: all .18s; font-family: inherit;
}
.spark-sl-demo-filter:hover { background: rgba(116,33,252,.08); color: var(--spark-vl); border-color: rgba(116,33,252,.18); }
.spark-sl-demo-filter.spark-active { background: rgba(116,33,252,.14); color: var(--spark-vl); border-color: rgba(116,33,252,.28); font-weight: 700; }

.spark-sl-demo-featured {
  background: linear-gradient(135deg, #19163a 0%, #1e1042 50%, #1d1230 100%);
  border: 1px solid rgba(116,33,252,.18); border-radius: 16px; padding: 22px 24px;
  position: relative; overflow: hidden;
}
.spark-sl-demo-featured::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 100% at 85% 50%, rgba(116,33,252,.08), transparent 65%); pointer-events: none; }
.spark-sl-demo-featured-pill {
  display: inline-flex; align-items: center; gap: 7px; margin-bottom: 10px;
  padding: 4px 12px; border-radius: 20px; background: rgba(116,33,252,.15);
  border: 1px solid rgba(116,33,252,.25); font-size: 10.5px; font-weight: 700; color: var(--spark-vl);
  text-transform: uppercase; letter-spacing: .07em;
}
.spark-sl-demo-pulse { width: 6px; height: 6px; border-radius: 50%; background: var(--spark-v); animation: sparkPulse 1.5s ease-in-out infinite; flex-shrink: 0; }
.spark-sl-demo-featured-title { font-size: 17px; font-weight: 700; color: #fff; line-height: 1.3; margin-bottom: 8px; }
.spark-sl-demo-featured-meta { display: flex; align-items: center; gap: 7px; font-size: 12px; color: rgba(255,255,255,.4); margin-bottom: 10px; }
.spark-sl-demo-featured-meta svg { width: 13px; height: 13px; flex-shrink: 0; }
.spark-sl-demo-featured-meta strong { color: var(--spark-vl); font-weight: 600; }
.spark-sl-demo-featured-desc { font-size: 13px; line-height: 1.65; color: rgba(255,255,255,.38); margin-bottom: 14px; max-width: 480px; }
.spark-sl-demo-author { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.spark-sl-demo-avatar { width: 32px; height: 32px; border-radius: 50%; background: linear-gradient(135deg, var(--spark-v), var(--spark-vm)); display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 800; color: #fff; flex-shrink: 0; }
.spark-sl-demo-author-name { font-size: 13px; font-weight: 600; color: #fff; }
.spark-sl-demo-author-role { font-size: 11px; color: rgba(255,255,255,.3); }
.spark-sl-demo-countdown { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.spark-sl-demo-count-item { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.spark-sl-demo-count-num { font-size: 24px; font-weight: 700; color: var(--spark-vl); line-height: 1; font-variant-numeric: tabular-nums; min-width: 36px; text-align: center; }
.spark-sl-demo-count-lbl { font-size: 9px; font-weight: 700; color: rgba(255,255,255,.25); text-transform: uppercase; letter-spacing: .06em; }
.spark-sl-demo-count-sep { font-size: 20px; font-weight: 700; color: rgba(116,33,252,.3); margin-bottom: 14px; }
.spark-sl-demo-inscribir {
  padding: 10px 28px; background: var(--spark-v); color: #fff;
  border: none; border-radius: 50px; font-size: 13.5px; font-weight: 700;
  cursor: pointer; font-family: inherit; transition: background .2s, transform .2s, box-shadow .2s;
}
.spark-sl-demo-inscribir:hover { background: var(--spark-vd); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(116,33,252,.3); }
.spark-sl-demo-dots-row { display: flex; gap: 6px; justify-content: center; margin-top: -4px; }
.spark-sl-demo-carousel-dot { width: 24px; height: 4px; border-radius: 2px; background: rgba(255,255,255,.1); transition: all .2s; }
.spark-sl-demo-carousel-dot.spark-active { background: var(--spark-v); width: 32px; }
.spark-sl-demo-section-label { font-size: 10.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,255,255,.25); }

.spark-sl-demo-courses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.spark-sl-demo-course-card {
  background: #1c1a2e; border-radius: 14px; overflow: hidden;
  border: 1px solid rgba(116,33,252,.1); padding: 20px 18px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color .2s, transform .2s, box-shadow .2s; cursor: pointer;
}
.spark-sl-demo-course-card:hover { border-color: rgba(116,33,252,.28); transform: translateY(-3px); box-shadow: 0 8px 24px rgba(116,33,252,.1); }
.spark-sl-demo-course-tags { display: flex; gap: 5px; }
.spark-sl-demo-ctag { padding: 2px 8px; border-radius: 4px; font-size: 9.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.spark-ctag-pk { background: rgba(116,33,252,.15); color: var(--spark-vl); }
.spark-ctag-g  { background: rgba(255,255,255,.05); color: rgba(255,255,255,.38); }
.spark-sl-demo-course-title { font-size: 13.5px; font-weight: 700; color: rgba(255,255,255,.88); line-height: 1.45; flex: 1; }
.spark-sl-demo-course-desc { font-size: 12px; line-height: 1.6; color: rgba(255,255,255,.32); }
.spark-sl-demo-course-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: auto; }
.spark-sl-demo-level-dots { display: flex; gap: 3px; align-items: center; }
.spark-sl-demo-level-dots span { width: 5px; height: 5px; border-radius: 50%; background: rgba(255,255,255,.1); }
.spark-sl-demo-level-dots span.spark-on { background: var(--spark-v); }
.spark-sl-demo-course-lbl { font-size: 10px; color: rgba(255,255,255,.28); }
.spark-sl-demo-course-bookmark { width: 26px; height: 26px; border-radius: 7px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.07); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all .18s; }
.spark-sl-demo-course-bookmark:hover { background: rgba(116,33,252,.1); border-color: rgba(116,33,252,.2); }
.spark-sl-demo-course-bookmark svg { width: 12px; height: 12px; stroke: rgba(255,255,255,.3); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; fill: none; }

.spark-sl-demo-plan-bar {
  background: #1c1a2e; border-radius: 12px; padding: 14px 18px;
  border: 1px solid rgba(116,33,252,.08);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.spark-sl-demo-plan-name { font-size: 11.5px; font-weight: 700; color: rgba(255,255,255,.5); margin-bottom: 10px; }
.spark-sl-demo-plan-tracks { display: flex; gap: 20px; }
.spark-sl-demo-plan-track { display: flex; align-items: center; gap: 8px; }
.spark-sl-demo-plan-track > span { font-size: 11px; color: rgba(255,255,255,.3); white-space: nowrap; }
.spark-sl-demo-track-bar { width: 80px; height: 3px; background: rgba(255,255,255,.06); border-radius: 2px; overflow: hidden; flex-shrink: 0; }
.spark-sl-demo-track-bar div { height: 100%; border-radius: 2px; background: linear-gradient(90deg, var(--spark-vd), var(--spark-v)); }
.spark-sl-demo-track-count { font-size: 11px; color: rgba(255,255,255,.25); }
.spark-sl-demo-plan-btn { display: flex; align-items: center; gap: 7px; padding: 9px 20px; background: var(--spark-v); color: #fff; border: none; border-radius: 50px; font-size: 12.5px; font-weight: 700; cursor: pointer; font-family: inherit; white-space: nowrap; transition: background .2s; }
.spark-sl-demo-plan-btn:hover { background: var(--spark-vd); }
.spark-sl-demo-plan-btn svg { width: 13px; height: 13px; stroke: #fff; fill: none; flex-shrink: 0; }

/* ── CTA FINAL ── */
.spark-concepto { padding: 88px 48px; background: var(--bg); }
.spark-concepto-inner {
  position: relative; max-width: 1100px; margin: 0 auto;
  border-radius: 32px; overflow: hidden;
  min-height: 320px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #f0e8ff 0%, var(--spark-vw) 30%, #ede4ff 60%, #f4f0ff 100%);
  border: 1.5px solid rgba(116,33,252,.16);
  box-shadow: 0 24px 64px rgba(116,33,252,.08);
}
.spark-concepto-inner::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(116,33,252,.05) 1px, transparent 1px); background-size: 28px 28px; pointer-events: none; z-index: 0; }
.spark-concepto-glow-left { position: absolute; top: -20%; left: -5%; width: 350px; height: 350px; border-radius: 50%; background: radial-gradient(circle, rgba(116,33,252,.1) 0%, transparent 65%); filter: blur(40px); pointer-events: none; }
.spark-concepto-glow-right { position: absolute; bottom: -15%; right: -5%; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(116,33,252,.08) 0%, transparent 65%); filter: blur(40px); pointer-events: none; }
.spark-concepto-body { position: relative; z-index: 2; text-align: center; padding: 60px 48px; }
.spark-concepto-body h2 { font-size: clamp(26px, 3.5vw, 48px); font-weight: 300; color: var(--bk); letter-spacing: -.035em; line-height: 1.15; margin-bottom: 14px; }
.spark-concepto-body h2 strong { font-weight: 300; color: var(--spark-v); }
.spark-concepto-body p { max-width: 440px; margin: 0 auto 28px; font-size: 15px; line-height: 1.75; color: var(--gy); }
.spark-concepto-pills { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 32px; }
.spark-concepto-pill { padding: 8px 20px; border-radius: 50px; font-size: 13px; font-weight: 500; background: rgba(116,33,252,.07); color: var(--spark-vd); border: 1px solid rgba(116,33,252,.16); }
.spark-concepto-btn,
a.spark-concepto-btn {
  display: inline-block; padding: 15px 40px;
  background: var(--spark-pk); color: #fff; border-radius: 50px;
  font-size: 15px; font-weight: 700;
  transition: background .22s, transform .2s, box-shadow .22s;
  box-shadow: 0 8px 28px rgba(226,33,252,.25);
}
.spark-concepto-btn:hover, a.spark-concepto-btn:hover { background: var(--spark-pkd); transform: translateY(-2px); box-shadow: 0 14px 36px rgba(226,33,252,.35); color: #fff; }

/* ── PRICING ── */
.spark-pricing {
  padding: 88px 48px; text-align: center;
  background: var(--spark-bg2); border-top: 1px solid var(--line);
}
.spark-pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 820px; margin: 0 auto; align-items: stretch; }
.spark-pc {
  background: #fff; border: 1.5px solid var(--spark-line2); border-radius: 28px;
  padding: 34px 28px; text-align: left; display: flex; flex-direction: column;
  position: relative; transition: box-shadow .28s, border-color .28s, transform .28s;
  box-shadow: var(--spark-sh-sm);
}
.spark-pc.spark-pc-feat { border-color: rgba(116,33,252,.25); box-shadow: 0 8px 40px rgba(116,33,252,.10); }
.spark-pc:hover { transform: translateY(-3px); box-shadow: var(--spark-sh); }
.spark-pc.spark-pc-feat:hover { box-shadow: 0 16px 52px rgba(116,33,252,.15); }
.spark-pc-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--spark-pk); color: #fff; font-size: 10px; font-weight: 800;
  padding: 4px 18px; border-radius: 20px; letter-spacing: .5px;
  text-transform: uppercase; white-space: nowrap;
}
.spark-pc-icon { width: 38px; height: 38px; border-radius: 11px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.spark-pc-icon.spark-demo-i { background: var(--spark-gl2); color: var(--gy); }
.spark-pc-icon.spark-pro-i  { background: var(--spark-vw);  color: var(--spark-v); }
.spark-pc-icon svg { width: 17px; height: 17px; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.spark-pc-name { font-size: 10.5px; font-weight: 800; color: var(--spark-gy2); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.spark-pc-price { font-size: 38px; font-weight: 700; color: var(--bk); line-height: 1; margin-bottom: 5px; letter-spacing: -.04em; }
.spark-pc-sub { font-size: 13px; color: var(--gy); margin-bottom: 16px; }
.spark-pc-desc { font-size: 13.5px; line-height: 1.7; color: var(--gy); margin-bottom: 22px; }
.spark-pc-btn {
  display: block; width: 100%; text-align: center; padding: 13px;
  border-radius: 50px; font-size: 14px; font-weight: 700;
  transition: all .25s; margin-bottom: 22px; border: none; cursor: pointer; font-family: inherit;
}
.spark-pc-btn-free { background: var(--spark-gl2); color: var(--bk); }
.spark-pc-btn-free:hover { background: var(--spark-vw); color: var(--spark-vd); }
.spark-pc-btn-pro { background: var(--spark-pk); color: #fff; box-shadow: 0 4px 16px rgba(226,33,252,.2); }
.spark-pc-btn-pro:hover { background: var(--spark-pkd); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(226,33,252,.28); color: #fff; }
.spark-pc-inc { font-size: 10.5px; font-weight: 800; color: var(--bk); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 12px; }
.spark-pc .spark-pc-list { list-style: none; display: flex; flex-direction: column; gap: 9px; margin-top: auto; }
.spark-pc .spark-pc-list li { list-style: none; font-size: 13px; color: var(--gy); display: flex; align-items: flex-start; gap: 9px; line-height: 1.5; }
.spark-pc-list li::before { content: '\2713'; font-weight: 800; font-size: 11px; flex-shrink: 0; margin-top: 2px; }
.spark-pc.spark-pc-feat .spark-pc-list li::before { color: var(--spark-v); }
.spark-pc:not(.spark-pc-feat) .spark-pc-list li::before { color: var(--spark-gy2); }

/* ── FAQ ── */
.spark-faq { padding: 48px 48px 88px; background: var(--bg); }
.spark-faq-inner { max-width: 800px; margin: 0 auto; }
.spark-faq-title { font-size: clamp(22px, 2.5vw, 32px); font-weight: 300; color: var(--bk); margin-bottom: 28px; text-align: center; letter-spacing: -.03em; }
.spark-faq-list { display: flex; flex-direction: column; gap: 8px; }
.spark-fq { background: #fff; border: 1.5px solid var(--line); border-radius: 18px; overflow: hidden; transition: border-color .2s; box-shadow: var(--spark-sh-sm); }
.spark-fq:hover { border-color: rgba(116,33,252,.15); }
.spark-fq.open { border-color: rgba(116,33,252,.22); }
.spark-fq-q {
  padding: 17px 20px; font-size: 14.5px; font-weight: 600; color: var(--bk);
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  gap: 16px; transition: color .2s;
}
.spark-fq.open .spark-fq-q { color: var(--spark-vd); }
.spark-fq-q::after { content: '+'; font-size: 20px; color: var(--spark-gy2); font-weight: 300; transition: transform .3s, color .3s; flex-shrink: 0; }
.spark-fq.open .spark-fq-q::after { transform: rotate(45deg); color: var(--spark-v); }
.spark-fq-a { padding: 0 20px; max-height: 0; overflow: hidden; transition: all .35s ease; font-size: 13.5px; line-height: 1.75; color: var(--gy); }
.spark-fq.open .spark-fq-a { padding: 0 20px 18px; max-height: 300px; }

/* ── FOOTER BANNER ── */
.spark-fbanner { padding: 60px 48px 0; background: var(--bg); }
.spark-fbanner__card {
  position: relative; max-width: 1180px; margin: 0 auto;
  border-radius: 32px; overflow: hidden; min-height: 240px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, #ede4ff 0%, rgba(237,228,255,.5) 50%, var(--bg) 100%);
  border: 1.5px solid rgba(116,33,252,.1);
}
.spark-fbanner__glow { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 240px; height: 240px; border-radius: 50%; background: radial-gradient(circle, rgba(116,33,252,.1) 0%, transparent 70%); filter: blur(32px); pointer-events: none; }
.spark-fbanner__text { position: relative; z-index: 2; text-align: center; font-family: 'Anton', sans-serif; font-size: clamp(34px, 5.5vw, 68px); text-transform: uppercase; color: var(--bk); line-height: 1; letter-spacing: -.01em; }
.spark-fbanner__text span { display: block; }
.spark-fbanner__text span:last-child { margin-top: 40px; color: var(--spark-v); }

/* ── ANIMATIONS ── */
@keyframes sparkFadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes sparkPulse { 0%,100% { opacity: .4; transform: scale(1); } 50% { opacity: 1; transform: scale(1.3); } }
@keyframes sparkBounce { 0%,80%,100% { transform: translateY(0); } 40% { transform: translateY(-5px); } }

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .spark-pgrid { grid-template-columns: 1fr 1fr; }
  .spark-prod-row { grid-template-columns: 1fr; gap: 32px; }
  .spark-prod-row.spark-rev { direction: ltr; }
  .spark-pricing-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .spark-editor-wrap { grid-template-columns: 260px 1fr; }
  .spark-ed-preview { display: none; }
  .spark-brain-card { padding: 40px 32px; }
  .spark-brain-inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  .spark-hero { padding: 72px 20px 52px; min-height: auto; }
  .spark-hero__h { font-size: clamp(42px, 11vw, 72px); }
  .spark-hero__sub { font-size: 14px; }
  .spark-hero__btns { flex-direction: column; align-items: center; gap: 10px; }
  .spark-btn-pk, .spark-btn-ghost-w { width: 100%; max-width: 320px; text-align: center; padding: 14px 32px; }
  .spark-hero__stats { flex-wrap: wrap; }
  .spark-hero__stat { flex: 1 1 calc(50% - 0px); border-right: none; border-bottom: 1px solid rgba(255,255,255,.06); }
  .spark-hero__stat:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.06); }
  /* Quitar border-bottom del último par — funciona para 2, 4, 6 stats */
  .spark-hero__stat:last-child,
  .spark-hero__stat:nth-last-child(2):nth-child(odd) { border-bottom: none; }

  .spark-pilares, .spark-prod, .spark-concepto, .spark-pricing, .spark-faq,
  .spark-editor-section, .spark-brain-section, .spark-sl-demo-section { padding-left: 20px; padding-right: 20px; }
  .spark-fbanner { padding: 32px 20px 0; }

  .spark-pilares { padding-top: 64px; padding-bottom: 64px; }
  .spark-pgrid { grid-template-columns: 1fr; }

  .spark-brain-section { padding-top: 64px; padding-bottom: 64px; }
  .spark-brain-card { padding: 32px 24px; border-radius: 24px; }
  .spark-brain-inner { grid-template-columns: 1fr; gap: 32px; }
  .spark-chat-messages { min-height: 240px; max-height: 240px; }

  .spark-prod { padding-top: 48px; }
  .spark-prod-row { grid-template-columns: 1fr; gap: 24px; margin-bottom: 56px; }
  .spark-prod-row.spark-rev { direction: ltr; }
  .spark-prod-mock { aspect-ratio: 16/9; }

  .spark-editor-section { padding-top: 64px; padding-bottom: 64px; }
  .spark-editor-wrap { grid-template-columns: 1fr; min-height: auto; border-radius: 16px; }
  .spark-ed-side { padding: 18px 16px; }
  .spark-step-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 2px; }
  .spark-ed-code { min-height: 280px; }
  #spark-code-input { min-height: 240px; }
  .spark-ed-preview { display: none; }

  .spark-sl-demo-section { padding-top: 64px; padding-bottom: 64px; }
  .spark-sl-demo-shell { border-radius: 16px; }
  .spark-sl-demo-sidebar { display: none; }
  .spark-sl-demo-app { flex-direction: column; }
  .spark-sl-demo-main { padding: 16px; }
  .spark-sl-demo-search-row { flex-direction: column; gap: 8px; }
  .spark-sl-demo-discover-btn { width: 100%; justify-content: center; }
  .spark-sl-demo-courses { grid-template-columns: 1fr; }
  .spark-sl-demo-plan-bar { flex-direction: column; align-items: flex-start; gap: 12px; }
  .spark-sl-demo-plan-tracks { flex-direction: column; gap: 8px; }
  .spark-sl-demo-plan-btn { width: 100%; justify-content: center; }

  .spark-concepto { padding-top: 64px; padding-bottom: 64px; }
  .spark-concepto-body { padding: 40px 24px; }
  .spark-pricing { padding-top: 64px; padding-bottom: 64px; }
  .spark-pricing-grid { grid-template-columns: 1fr; max-width: 100%; }
  .spark-faq { padding: 40px 20px 64px; }
  .spark-fbanner__card { min-height: 180px; border-radius: 20px; }
  .spark-fbanner__text span:last-child { margin-top: 24px; }
}

@media (max-width: 600px) {
  .spark-hero { padding: 60px 16px 44px; }
  .spark-hero__h { font-size: clamp(36px, 12vw, 52px); }
  .spark-sec-title { font-size: clamp(22px, 7vw, 30px); }
  .spark-pilares, .spark-prod, .spark-concepto, .spark-pricing, .spark-faq,
  .spark-editor-section, .spark-brain-section, .spark-sl-demo-section { padding-left: 16px; padding-right: 16px; }
  .spark-fbanner { padding: 24px 16px 0; }
  .spark-brain-card { padding: 24px 16px; border-radius: 20px; }
  .spark-step-list { grid-template-columns: 1fr; }
  .spark-pc { padding: 28px 20px; border-radius: 20px; }
  .spark-pc-price { font-size: 30px; }
  .spark-fq { border-radius: 14px; }
  .spark-fq-q { font-size: 13.5px; padding: 15px 16px; }
  .spark-sl-demo-live-pill { display: none; }
}