/*
 * Diagraw — interview whiteboard landing (redesign).
 * Self-contained stylesheet used ONLY by the ES/EN interview pages
 * (/es/pizarra-para-entrevistas, /en/interview-whiteboard). The other
 * marketing pages keep landing.css. Light + dark via prefers-color-scheme.
 * Type: Plus Jakarta Sans (display + body) and Patrick Hand (hand notes) —
 * the same families the app itself uses.
 */
:root {
  color-scheme: light;
  --bg: #faf9f5;
  --band: #f1f0ea;
  --surface: #ffffff;
  --ink: #14151a;
  --body: #54565f;
  --muted: #8a8c96;
  --line: rgba(20, 21, 26, 0.1);
  --line-2: rgba(20, 21, 26, 0.14);
  --accent: #3b5bdb;
  --accent-ink: #26399e;
  --accent-soft: #eef1fd;
  --amber: #f2994a;
  --amber-soft: #fdf3e9;
  --sticky: #fef3b0;
  --sticky-ink: #5c5320;
  --invert-bg: #14151a;
  --invert-ink: #faf9f5;
  --invert-body: #d8d9de;
  --cta-bg: #eef1fd;
  --canvas-bg: #fdfcfa;
  --canvas-dot: rgba(20, 21, 26, 0.09);
  --chrome-bg: #f1f0ea;
  --shadow-mock: 0 24px 60px rgba(20, 21, 26, 0.14);
  --font-display: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --font-body: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --font-hand: "Patrick Hand", "Plus Jakarta Sans", cursive;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #121317;
    --band: #16171c;
    --surface: #1b1c22;
    --ink: #f4f3ee;
    --body: #b9bbc4;
    --muted: #83858f;
    --line: rgba(255, 255, 255, 0.1);
    --line-2: rgba(255, 255, 255, 0.16);
    --accent: #6f88f0;
    --accent-ink: #22347f;
    --accent-soft: rgba(111, 136, 240, 0.14);
    --amber: #f2a863;
    --amber-soft: rgba(242, 153, 74, 0.14);
    --sticky: #4a4222;
    --sticky-ink: #f2e6b0;
    --invert-bg: #1f2027;
    --invert-ink: #f4f3ee;
    --invert-body: #c3c5cd;
    --cta-bg: #191b2a;
    --canvas-bg: #16171c;
    --canvas-dot: rgba(255, 255, 255, 0.07);
    --chrome-bg: #1f2027;
    --shadow-mock: 0 24px 60px rgba(0, 0, 0, 0.5);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Keyframes --------------------------------------------------------------- */
@keyframes curA1 {
  0% { left: 14%; top: 58%; }
  25% { left: 38%; top: 30%; }
  50% { left: 62%; top: 52%; }
  75% { left: 44%; top: 70%; }
  100% { left: 14%; top: 58%; }
}
@keyframes curA2 {
  0% { left: 70%; top: 22%; }
  30% { left: 50%; top: 46%; }
  60% { left: 26%; top: 26%; }
  80% { left: 58%; top: 16%; }
  100% { left: 70%; top: 22%; }
}
@keyframes drawA {
  to { stroke-dashoffset: 0; }
}
@keyframes popA {
  0%, 100% { opacity: 0; transform: translateY(6px) scale(0.9); }
  15%, 85% { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes bobA {
  0%, 100% { transform: rotate(-1deg) translateY(0); }
  50% { transform: rotate(1deg) translateY(-4px); }
}

/* Nav --------------------------------------------------------------------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 72px;
  border-bottom: 1.5px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: block;
  box-shadow: 0 3px 0 rgba(20, 21, 26, 0.12);
}

.brand span {
  font: 800 21px var(--font-display);
  letter-spacing: -0.02em;
  color: var(--ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links .link {
  font: 500 15px var(--font-body);
  color: var(--body);
  transition: color 0.15s ease;
}

.nav-links .link:hover {
  color: var(--ink);
}

.lang-pill {
  font: 500 14px var(--font-body);
  color: var(--muted);
  border: 1.5px solid var(--line-2);
  border-radius: 20px;
  padding: 6px 14px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.lang-pill:hover {
  color: var(--ink);
  border-color: var(--muted);
}

.btn-cta {
  background: var(--ink);
  color: var(--bg);
  font: 600 14.5px var(--font-body);
  padding: 12px 22px;
  border-radius: 9px;
  transition: opacity 0.15s ease;
}

.btn-cta:hover {
  opacity: 0.88;
}

/* Hero -------------------------------------------------------------------- */
.hero {
  padding: 88px 72px 40px;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font: 700 12.5px var(--font-body);
  letter-spacing: 0.08em;
  padding: 8px 16px;
  border-radius: 20px;
  text-transform: uppercase;
}

.badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.hero h1 {
  font: 800 clamp(2.5rem, 1.4rem + 3.6vw, 4.125rem) / 1.05 var(--font-display);
  letter-spacing: -0.03em;
  margin: 26px auto 0;
  max-width: 840px;
  color: var(--ink);
  text-wrap: balance;
}

.u-underline {
  position: relative;
  display: inline-block;
}

.u-underline svg {
  position: absolute;
  left: 0;
  bottom: -10px;
  width: 100%;
  height: 18px;
}

.u-underline svg path {
  stroke: var(--accent);
}

.hero-lead {
  font: 400 clamp(1.05rem, 0.95rem + 0.4vw, 1.1875rem) / 1.6 var(--font-body);
  color: var(--body);
  max-width: 600px;
  margin: 34px auto 0;
}

.actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 38px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  font: 700 16px var(--font-body);
  padding: 16px 30px;
  border-radius: 11px;
  box-shadow: 0 5px 0 var(--accent-ink);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn-primary:hover {
  transform: translateY(2px);
  box-shadow: 0 3px 0 var(--accent-ink);
}

.btn-text {
  font: 600 15.5px var(--font-body);
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
  padding-bottom: 2px;
}

.hero-caption {
  font: 500 13.5px var(--font-body);
  color: var(--muted);
  letter-spacing: 0.02em;
  margin-top: 26px;
}

/* Animated mockup --------------------------------------------------------- */
.mock {
  margin: 64px auto 0;
  max-width: 1080px;
  border-radius: 16px;
  border: 2px solid var(--line-2);
  box-shadow: var(--shadow-mock);
  overflow: hidden;
  transform: rotate(-0.4deg);
  background: var(--surface);
}

.mock-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  background: var(--chrome-bg);
  border-bottom: 1.5px solid var(--line);
}

.mock-bar .d {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.mock-bar .d1 { background: var(--amber); }
.mock-bar .d2 { background: var(--accent); }
.mock-bar .d3 { background: var(--ink); opacity: 0.2; }

.mock-bar .url {
  font: 500 12.5px var(--font-body);
  color: var(--muted);
  margin-left: 12px;
}

.mock-canvas {
  position: relative;
  aspect-ratio: 1080 / 440;
  background-image: radial-gradient(var(--canvas-dot) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
  background-color: var(--canvas-bg);
  overflow: hidden;
}

.mock-canvas svg.wires {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.wire {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  animation: drawA 1.6s ease forwards;
}

.wire.a { stroke: var(--accent); }
.wire.b { stroke: var(--amber); }

.mk-node {
  position: absolute;
  padding: 16px 18px;
  border-radius: 10px;
  border: 2px solid var(--ink);
  background: var(--surface);
}

.mk-node .t {
  font: 700 15px var(--font-display);
  color: var(--ink);
}

.mk-node .n {
  font: 400 15px var(--font-hand);
  margin-top: 2px;
}

.mk-client {
  left: 5.5%;
  top: 25%;
  width: 170px;
  background: var(--accent-soft);
  border-color: var(--accent);
  transform: rotate(-1.5deg);
  animation: bobA 6s ease-in-out infinite;
}
.mk-client .n { color: var(--accent); }

.mk-api {
  left: 40.7%;
  top: 25%;
  width: 140px;
  transform: rotate(1deg);
  animation: bobA 7s ease-in-out infinite;
}
.mk-api .n { color: var(--amber); }

.mk-cache {
  left: 70.4%;
  top: 22.7%;
  width: 130px;
  transform: rotate(-1deg);
  animation: bobA 8s ease-in-out infinite;
}

.mk-db {
  left: 53.7%;
  top: 61.3%;
  width: 150px;
  background: var(--amber-soft);
  border-color: var(--amber);
  transform: rotate(1.5deg);
  animation: bobA 6.5s ease-in-out infinite;
}
.mk-db .n { color: var(--amber); }

.mk-sticky {
  position: absolute;
  left: 18.5%;
  top: 65.9%;
  width: 150px;
  padding: 12px 14px;
  background: var(--sticky);
  color: var(--sticky-ink);
  box-shadow: 0 6px 14px rgba(20, 21, 26, 0.15);
  transform: rotate(-3deg);
  font: 400 16px / 1.35 var(--font-hand);
  animation: popA 8s ease-in-out infinite;
}

.mk-cursor {
  position: absolute;
}

.mk-cursor .arrow {
  width: 0;
  height: 0;
  border-left: 10px solid var(--cur);
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  transform: rotate(-20deg);
}

.mk-cursor .tag {
  background: var(--cur);
  color: #fff;
  font: 600 11.5px var(--font-body);
  padding: 3px 8px;
  border-radius: 5px;
  margin-top: 2px;
  white-space: nowrap;
}

.cur1 {
  --cur: var(--accent);
  animation: curA1 9s ease-in-out infinite;
}

.cur2 {
  --cur: var(--amber);
  animation: curA2 11s ease-in-out infinite;
}

/* Features ---------------------------------------------------------------- */
.features {
  padding: 100px 72px;
  background: var(--band);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
}

.feat {
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: 14px;
  padding: 34px 30px;
}

.feat:nth-child(1) { transform: rotate(-0.6deg); }
.feat:nth-child(2) { transform: rotate(0.4deg); }
.feat:nth-child(3) { transform: rotate(-0.3deg); }

.feat .ico {
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border: 2px solid var(--accent);
  border-radius: 12px;
  background: var(--accent-soft);
}

.feat.f2 .ico {
  border-radius: 50%;
  border-color: var(--amber);
  background: var(--amber-soft);
}

.feat.f3 .ico {
  border-color: var(--ink);
  background: var(--band);
}

.feat h3 {
  font: 700 19px var(--font-display);
  color: var(--ink);
  margin: 0 0 10px;
}

.feat p {
  font: 400 15px / 1.55 var(--font-body);
  color: var(--body);
  margin: 0;
}

/* Use cases --------------------------------------------------------------- */
.usecases {
  padding: 110px 72px;
  max-width: 1240px;
  margin: 0 auto;
}

.uc-head {
  text-align: center;
  margin-bottom: 60px;
}

.eyebrow {
  font: 700 12.5px var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.uc-head h2 {
  font: 800 clamp(2rem, 1.4rem + 2vw, 2.625rem) var(--font-display);
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  color: var(--ink);
  text-wrap: balance;
}

.uc-head p {
  font: 400 17px / 1.6 var(--font-body);
  color: var(--body);
  max-width: 600px;
  margin: 16px auto 0;
}

.uc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.uc {
  border: 2px solid var(--line);
  border-radius: 14px;
  padding: 32px;
}

.uc h3 {
  font: 700 20px var(--font-display);
  color: var(--ink);
  margin: 0;
}

.uc .tag {
  font: 400 16px var(--font-hand);
  margin: 4px 0 12px;
}

.uc.blue .tag { color: var(--accent); }
.uc.amber .tag { color: var(--amber); }

.uc p {
  font: 400 15px / 1.6 var(--font-body);
  color: var(--body);
  margin: 0;
}

/* Why it works ------------------------------------------------------------ */
.why {
  padding: 100px 72px;
  background: var(--invert-bg);
  color: var(--invert-ink);
}

.why-inner {
  max-width: 900px;
  margin: 0 auto;
}

.why h2 {
  font: 800 clamp(1.9rem, 1.4rem + 1.6vw, 2.375rem) var(--font-display);
  letter-spacing: -0.02em;
  text-align: center;
  margin: 0 0 40px;
  color: var(--invert-ink);
  text-wrap: balance;
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.why-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.why-item .bull {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
  margin-top: 2px;
}

.why-item p {
  font: 400 17px / 1.55 var(--font-body);
  color: var(--invert-body);
  margin: 0;
}

/* FAQ --------------------------------------------------------------------- */
.faq {
  padding: 100px 72px;
  max-width: 820px;
  margin: 0 auto;
}

.faq h2 {
  font: 800 clamp(1.9rem, 1.4rem + 1.6vw, 2.375rem) var(--font-display);
  letter-spacing: -0.02em;
  text-align: center;
  margin: 0 0 40px;
  color: var(--ink);
  text-wrap: balance;
}

.faq details {
  border-bottom: 2px solid var(--line);
  padding: 22px 0;
}

.faq summary {
  font: 700 18px var(--font-display);
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq p {
  font: 400 15.5px / 1.6 var(--font-body);
  color: var(--body);
  margin: 14px 0 0;
}

/* Final CTA --------------------------------------------------------------- */
.final {
  padding: 100px 72px;
  background: var(--cta-bg);
  text-align: center;
}

.final h2 {
  font: 800 clamp(2rem, 1.4rem + 2vw, 2.625rem) var(--font-display);
  letter-spacing: -0.02em;
  margin: 0 auto 16px;
  max-width: 640px;
  color: var(--ink);
  text-wrap: balance;
}

.final p {
  font: 400 17px / 1.6 var(--font-body);
  color: var(--body);
  max-width: 520px;
  margin: 0 auto 34px;
}

/* Footer ------------------------------------------------------------------ */
.foot {
  padding: 36px 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1.5px solid var(--line);
}

.foot .brand-name {
  font: 700 16px var(--font-display);
  color: var(--ink);
}

.foot .copy {
  font: 400 13.5px var(--font-body);
  color: var(--muted);
}

.foot .lang {
  font: 500 13.5px var(--font-body);
  color: var(--muted);
  transition: color 0.15s ease;
}

.foot .lang:hover {
  color: var(--ink);
}

/* Responsive -------------------------------------------------------------- */
@media (max-width: 900px) {
  .nav { padding: 20px 24px; }
  .nav-links { gap: 18px; }
  .hero { padding: 56px 24px 32px; }
  .features,
  .usecases,
  .why,
  .faq,
  .final { padding: 64px 24px; }
  .features-grid { grid-template-columns: 1fr; gap: 20px; }
  .uc-grid { grid-template-columns: 1fr; }
  .foot { padding: 28px 24px; flex-direction: column; text-align: center; }
  .feat:nth-child(n) { transform: none; }
}

@media (max-width: 640px) {
  .nav-links .link { display: none; }
  .mock-canvas { aspect-ratio: auto; height: 360px; }
  .mk-node,
  .mk-sticky { transform: none; }
  .mk-node .t { font-size: 13px; }
  .mk-node .n,
  .mk-sticky { font-size: 14px; }
  .actions { gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .wire,
  .mk-node,
  .mk-sticky,
  .mk-cursor {
    animation: none !important;
  }
  .wire { stroke-dashoffset: 0 !important; }
  .mk-sticky { opacity: 1; transform: rotate(-3deg); }
}