/* ========================================================================
   QR Fácil · Diseño responsive · https://soyfacuh.com/
   Sin frameworks, sin fuentes remotas y sin estilos minificados.
   ======================================================================== */

:root {
  color-scheme: light;
  --ink: #1a2f2b;
  --ink-soft: #425751;
  --muted: #71817b;
  --green: #184c43;
  --green-hover: #11392f;
  --mint: #d9f2d4;
  --lime: #dfff96;
  --canvas: #f7f9f6;
  --white: #ffffff;
  --line: #e3e9e5;
  --line-dark: #d5ded7;
  --shadow: 0 22px 65px rgba(28, 60, 45, 0.055);
  --radius: 22px;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

html {
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--canvas);
}

[hidden] {
  display: none !important;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid #9fe6a9;
  outline-offset: 3px;
}

svg {
  display: block;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: -0.055em;
}

.container {
  width: min(1200px, calc(100% - 64px));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 12px 18px;
  border-radius: 12px;
  color: white;
  background: var(--green);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Encabezado */
.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid rgba(29, 63, 48, 0.09);
  background: rgba(247, 249, 246, 0.94);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  gap: 22px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 850;
  letter-spacing: -0.065em;
  text-decoration: none;
  white-space: nowrap;
}

.brand-accent {
  color: #4a887b;
}

.brand-symbol {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  color: #dfff96;
  background: var(--green);
  box-shadow: 0 9px 20px rgba(24, 76, 67, 0.17);
}

.brand-symbol svg {
  width: 25px;
  height: 25px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 35px;
}

.nav-links a,
.footer-links a {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: color 180ms;
}

.nav-links a:hover,
.footer-links a:hover {
  color: #338d77;
}

.header-cta {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  min-height: 43px;
  padding: 0 18px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
  background: var(--white);
  transition: transform 180ms, box-shadow 180ms;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(21, 64, 46, 0.1);
}

/* Portada */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.92fr);
  align-items: center;
  min-height: 575px;
  gap: 55px;
  padding-top: 64px;
  padding-bottom: 75px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-tag,
.hero-assurance,
.hero-features {
  display: flex;
  align-items: center;
}

.hero-tag {
  width: fit-content;
  gap: 9px;
  margin-bottom: 28px;
  padding: 8px 14px;
  border: 1px solid #d8e6d9;
  border-radius: 999px;
  color: #436657;
  background: #eff6eb;
  font-size: 12px;
  font-weight: 750;
}

.status-dot,
.preview-live i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4faa7c;
  box-shadow: 0 0 0 4px #d7ebda;
}

.hero h1 {
  max-width: 630px;
  margin-bottom: 25px;
  font-size: clamp(54px, 5.25vw, 79px);
  font-weight: 850;
  line-height: 1.035;
}

.hero h1 span,
.section-intro h2 span,
.info-heading h2 span,
.faq-layout h2 span {
  color: #498f7a;
}

.hero-copy > p {
  max-width: 545px;
  margin-bottom: 31px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 13px;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  transition: background 180ms, color 180ms, transform 180ms, box-shadow 180ms;
}

.button:not(:disabled):hover {
  transform: translateY(-2px);
}

.button:disabled {
  opacity: 0.44;
}

.button-primary {
  color: var(--white);
  background: var(--green);
  box-shadow: 0 10px 26px rgba(24, 76, 67, 0.17);
}

.button-primary:not(:disabled):hover {
  background: var(--green-hover);
}

.button-outline {
  border-color: var(--line-dark);
  color: var(--green);
  background: var(--white);
}

.button-outline:not(:disabled):hover {
  border-color: #abc7b1;
  background: #f8fcf7;
}

.hero-assurance {
  max-width: 205px;
  gap: 6px;
  color: #5d7269;
  font-size: 11px;
  font-weight: 650;
  line-height: 1.5;
}

.hero-assurance svg {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  fill: none;
  stroke: #439778;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero-features {
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 49px;
}

.hero-features span {
  padding: 8px 12px;
  border: 1px solid #e2ebe2;
  border-radius: 8px;
  color: #536961;
  font-size: 11px;
  font-weight: 700;
  background: #fff;
}

.hero-art {
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
  min-height: 430px;
}

.hero-art::before {
  position: absolute;
  z-index: -2;
  width: 92%;
  height: 92%;
  border-radius: 42% 58% 54% 46% / 47% 44% 56% 53%;
  background: radial-gradient(circle at 65% 25%, #e4f7d5, transparent 54%), linear-gradient(135deg, #e8f2e5, #dbeddc);
  filter: blur(1px);
  content: "";
  transform: rotate(-7deg);
}

.hero-art::after {
  position: absolute;
  z-index: -1;
  width: 66%;
  height: 84%;
  border: 1px solid rgba(24, 76, 67, 0.12);
  border-radius: 45%;
  content: "";
  transform: rotate(33deg);
}

.orb {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(2px);
}

.orb-one {
  top: 15px;
  right: 27px;
  width: 105px;
  height: 105px;
  background: linear-gradient(150deg, #eaffc5, #83c9a4);
  box-shadow: inset -9px -11px 26px rgba(24, 76, 67, 0.11), 9px 18px 35px rgba(24, 76, 67, 0.08);
}

.orb-two {
  bottom: 15px;
  left: 34px;
  width: 42px;
  height: 42px;
  background: #9bc9aa;
}

.hero-sample {
  z-index: 1;
  width: 280px;
  padding: 15px;
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 40px 70px rgba(31, 75, 51, 0.18), 0 8px 18px rgba(31, 75, 51, 0.06);
  transform: rotate(-7deg) translateY(2px);
}

.sample-top,
.sample-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sample-top {
  padding: 3px 3px 13px;
  color: #7b8b80;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.02em;
}

.sample-traffic {
  display: flex;
  gap: 4px;
}

.sample-traffic i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #d7e0d6;
}

.sample-code {
  display: grid;
  place-items: center;
  padding: 35px;
  border-radius: 12px;
  background: #eff8ec;
}

.sample-code svg {
  width: 100%;
  height: auto;
}

.sample-bottom {
  justify-content: flex-start;
  gap: 8px;
  padding: 18px 5px 3px;
  color: #3f6457;
  font-size: 12px;
  font-weight: 800;
}

.sample-check,
.chip-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  color: var(--green);
  background: var(--lime);
  font-weight: 900;
}

.floating-chip {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 13px;
  border: 1px solid #e6eee4;
  border-radius: 12px;
  color: #325145;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 14px 25px rgba(25, 68, 53, 0.12);
  font-size: 11px;
  font-weight: 800;
}

.chip-top {
  top: 63px;
  left: 4px;
  transform: rotate(7deg);
}

.chip-bottom {
  right: 0;
  bottom: 51px;
  transform: rotate(7deg);
}

.chip-file {
  font-size: 17px;
}

.chip-separator {
  width: 1px;
  height: 14px;
  margin: 0 3px;
  background: var(--line-dark);
}

/* Editor */
.studio-section {
  padding: 82px 0 103px;
  background: #fff;
  border-top: 1px solid #edf0ed;
  border-bottom: 1px solid #edf0ed;
}

.section-intro,
.panel-title,
.preview-heading,
.preview-live,
.color-input-wrap {
  display: flex;
  align-items: center;
}

.section-intro {
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
}

.eyebrow {
  display: block;
  margin-bottom: 13px;
  color: #438775;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.18em;
}

.section-intro h2,
.info-heading h2,
.faq-layout h2 {
  margin-bottom: 10px;
  font-size: clamp(32px, 3.3vw, 44px);
  font-weight: 820;
  line-height: 1.13;
}

.section-intro p,
.info-heading p,
.faq-layout > div > p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.privacy-label {
  flex-shrink: 0;
  padding: 11px 14px;
  border: 1px solid #e2eee3;
  border-radius: 999px;
  color: #477260;
  background: #f2faf2;
  font-size: 11px;
  font-weight: 700;
}

.studio-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.82fr);
  gap: 20px;
  align-items: start;
}

.studio-editor,
.preview-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.studio-editor {
  overflow: hidden;
}

.panel-section {
  padding: 31px 32px;
  border-bottom: 1px solid var(--line);
}

.panel-section:last-child {
  border-bottom: 0;
}

.panel-title {
  align-items: flex-start;
  gap: 13px;
  margin-bottom: 25px;
}

.step-number {
  flex: 0 0 35px;
  display: grid;
  place-items: center;
  width: 35px;
  height: 35px;
  border-radius: 11px;
  color: var(--green);
  background: #e9f6e7;
  font-size: 11px;
  font-weight: 850;
}

.panel-title h3 {
  margin: 1px 0 5px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.035em;
}

.panel-title p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.type-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}

.type-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  min-height: 45px;
  padding: 10px 11px;
  border: 1px solid #e5ebe6;
  border-radius: 11px;
  color: #55675f;
  background: #fbfcfa;
  font-size: 12px;
  font-weight: 730;
  text-align: left;
  transition: background 160ms, border-color 160ms, color 160ms, transform 160ms;
}

.type-tab span {
  display: inline-grid;
  place-items: center;
  flex: 0 0 25px;
  width: 25px;
  height: 25px;
  border-radius: 7px;
  background: #edf2ec;
  font-size: 14px;
  font-weight: 800;
}

.type-tab:hover {
  transform: translateY(-1px);
  border-color: #c6dbc7;
}

.type-tab.is-active {
  border-color: #a7ccad;
  color: #1a5745;
  background: #edfaec;
  box-shadow: inset 0 0 0 1px #c7e6c7;
}

.type-tab.is-active span {
  background: #d2f2cb;
}

.field-area {
  min-height: 98px;
}

.field {
  min-width: 0;
  margin-bottom: 17px;
}

.field-area > .field:last-of-type,
.field-pair > .field {
  margin-bottom: 0;
}

.field-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 17px;
}

.field label,
.color-field,
.select-field {
  display: block;
  color: #40564c;
  font-size: 12px;
  font-weight: 750;
}

.field label {
  margin-bottom: 9px;
}

.optional {
  color: #92a097;
  font-size: 11px;
  font-weight: 500;
}

.field input,
.field select,
.field textarea,
.select-field input,
.select-field select {
  width: 100%;
  border: 1px solid #dae4dc;
  border-radius: 10px;
  color: #263b31;
  background: #fff;
  outline: none;
  transition: border-color 160ms, box-shadow 160ms;
}

.field input,
.field select,
.select-field input,
.select-field select {
  min-height: 45px;
  padding: 10px 12px;
}

.field textarea {
  min-height: 99px;
  padding: 12px;
  resize: vertical;
  line-height: 1.55;
}

.field input::placeholder,
.field textarea::placeholder,
.select-field input::placeholder {
  color: #a2b0a7;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.select-field input:focus,
.select-field select:focus {
  border-color: #86bda1;
  box-shadow: 0 0 0 3px rgba(144, 204, 168, 0.19);
}

.field small,
.field-note {
  display: block;
  margin-top: 8px;
  color: #819088;
  font-size: 11px;
  line-height: 1.65;
}

.password-wrap {
  position: relative;
}

.password-wrap input {
  padding-right: 73px;
}

.password-wrap button {
  position: absolute;
  top: 5px;
  right: 5px;
  min-width: 58px;
  height: 35px;
  border: 0;
  border-radius: 7px;
  color: var(--green);
  background: #edf6ed;
  font-size: 11px;
  font-weight: 800;
}

.password-wrap.is-disabled {
  opacity: 0.45;
}

.checkbox-field {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-soft);
  font-size: 12px;
  cursor: pointer;
}

.checkbox-field input {
  width: 15px;
  height: 15px;
  accent-color: var(--green);
}

.form-error {
  margin: 12px 0 0;
  padding: 12px 14px;
  border: 1px solid #f2cfc7;
  border-radius: 10px;
  color: #a23f37;
  background: #fff5f2;
  font-size: 12px;
  line-height: 1.5;
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 17px;
}

.generate-button {
  flex: 1 1 165px;
}

.form-actions .button-outline {
  flex: 0 0 auto;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.preset {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: #53645a;
  background: #fff;
  font-size: 11px;
  font-weight: 700;
}

.preset:hover,
.preset.is-selected {
  border-color: #8fbca1;
  background: #f2faf0;
}

.preset i {
  display: block;
  width: 17px;
  height: 17px;
  border: 2px solid white;
  border-radius: 50%;
  box-shadow: 0 0 0 1px #cad8cc;
}

.design-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 17px 14px;
}

.color-field,
.select-field {
  min-width: 0;
}

.color-input-wrap,
.select-field input,
.select-field select {
  margin-top: 9px;
}

.color-input-wrap {
  gap: 12px;
  min-height: 45px;
  padding: 6px 10px;
  border: 1px solid #dae4dc;
  border-radius: 10px;
  background: #fff;
  color: #5e6f67;
  font-size: 11px;
  font-weight: 600;
}

.color-input-wrap input[type="color"] {
  width: 36px;
  height: 28px;
  padding: 2px;
  border: 1px solid #dbe5dc;
  border-radius: 7px;
  background: #fff;
  cursor: pointer;
}

.design-hint {
  margin: 23px 0 0;
  padding: 11px 13px;
  border-radius: 9px;
  color: #547060;
  background: #f2faf0;
  font-size: 11px;
  line-height: 1.55;
}

.design-hint.is-warning {
  color: #8a5d26;
  background: #fff6e8;
}

/* Vista previa */
.preview-panel {
  position: sticky;
  top: 24px;
  padding: 27px;
  background: #fbfcfa;
}

.preview-heading {
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 21px;
}

.preview-heading .eyebrow {
  margin-bottom: 9px;
  font-size: 10px;
}

.preview-heading h3 {
  margin-bottom: 0;
  font-size: 21px;
  letter-spacing: -0.04em;
}

.preview-live {
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid #dfeae0;
  border-radius: 999px;
  color: #54725d;
  background: #eff7ed;
  font-size: 10px;
  font-weight: 750;
  white-space: nowrap;
}

.preview-live i {
  width: 6px;
  height: 6px;
  box-shadow: none;
}

.preview-stage {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 338px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid #e2e9e1;
  border-radius: 17px;
  background: #fff;
  background-image: radial-gradient(#edf1ec 0.8px, transparent 0.8px);
  background-size: 15px 15px;
}

#qr-canvas {
  display: block;
  width: min(100%, 285px);
  max-height: 295px;
  height: auto;
  aspect-ratio: 1;
  background: white;
  box-shadow: 0 9px 38px rgba(35, 71, 51, 0.10);
}

.empty-state {
  display: flex;
  align-items: center;
  flex-direction: column;
  max-width: 215px;
  padding: 24px 0;
  text-align: center;
}

.empty-art {
  display: grid;
  grid-template-columns: repeat(3, 27px);
  grid-template-rows: repeat(3, 27px);
  gap: 8px;
  margin-bottom: 25px;
  transform: rotate(-6deg);
}

.empty-art span {
  border-radius: 6px;
  background: #dcebe1;
}

.empty-art span:nth-child(2),
.empty-art span:nth-child(4),
.empty-art span:nth-child(8) {
  background: #a9d2b8;
}

.empty-art span:nth-child(5),
.empty-art span:nth-child(7) {
  border-radius: 50%;
  background: #5c9c7d;
}

.empty-state strong {
  margin-bottom: 8px;
  color: #35584a;
  font-size: 15px;
  letter-spacing: -0.02em;
}

.empty-state p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.qr-status {
  margin-top: 15px;
  color: #71847a;
  font-size: 11px;
  line-height: 1.4;
  text-align: center;
}

.download-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 22px;
}

.download-actions .button {
  min-width: 0;
  min-height: 45px;
  padding: 9px 10px;
  font-size: 12px;
  white-space: nowrap;
}

.utility-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
  margin-top: 12px;
}

.utility-actions button {
  min-height: 37px;
  padding: 8px;
  border: 1px solid transparent;
  border-radius: 9px;
  color: #536e61;
  background: transparent;
  font-size: 11px;
  font-weight: 750;
  transition: background 160ms;
}

.utility-actions button:hover:not(:disabled) {
  background: #eaf4eb;
}

.utility-actions button:disabled {
  color: #a4b0a7;
}

.generated-content {
  margin-top: 13px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
}

.generated-content summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: #4f655a;
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
  list-style: none;
}

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

.generated-content code {
  display: block;
  max-height: 115px;
  margin-top: 12px;
  overflow: auto;
  color: #495f53;
  font-size: 11px;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.preview-tip {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 19px;
  padding: 15px;
  border: 1px solid #e3ece0;
  border-radius: 12px;
  background: #f0f8eb;
}

.preview-tip > span {
  color: #49927a;
  font-size: 18px;
  line-height: 1;
}

.preview-tip p {
  margin: 0;
  color: #647869;
  font-size: 11px;
  line-height: 1.65;
}

.preview-tip strong {
  color: #355f4a;
}

/* Información, ejemplos y preguntas */
.info-section {
  padding-top: 104px;
  padding-bottom: 100px;
}

.info-heading {
  max-width: 590px;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 37px;
}

.how-card {
  position: relative;
  min-height: 235px;
  padding: 27px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 8px 30px rgba(28, 60, 45, 0.03);
}

.how-number {
  position: absolute;
  top: 29px;
  right: 29px;
  color: #cad7cc;
  font-size: 14px;
  font-weight: 850;
}

.how-icon {
  display: grid;
  place-items: center;
  width: 45px;
  height: 45px;
  margin-bottom: 32px;
  border-radius: 13px;
  color: #2b7560;
  background: #e9f6e5;
  font-size: 22px;
  font-weight: 700;
}

.how-card h3 {
  margin-bottom: 9px;
  font-size: 18px;
  letter-spacing: -0.03em;
}

.how-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.usecase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 17px;
  margin-top: 19px;
}

.usecase-card {
  min-height: 230px;
  padding: 33px;
  overflow: hidden;
  border-radius: 18px;
  color: #ecf9f2;
  background: radial-gradient(circle at 92% 20%, #2d7d67 0, transparent 38%), linear-gradient(120deg, #143f36, #1d5749);
}

.usecase-alt {
  color: #274b39;
  background: radial-gradient(circle at 90% 20%, #bbefa7, transparent 42%), linear-gradient(120deg, #e4f7d9, #d2e9cf);
}

.usecase-label {
  color: #b3dec7;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.16em;
}

.usecase-alt .usecase-label {
  color: #4c8a64;
}

.usecase-card h3 {
  max-width: 340px;
  margin: 18px 0 9px;
  font-size: 24px;
  line-height: 1.16;
}

.usecase-card p {
  max-width: 385px;
  margin-bottom: 19px;
  color: inherit;
  opacity: 0.8;
  font-size: 12px;
  line-height: 1.6;
}

.usecase-card a {
  display: inline-flex;
  gap: 12px;
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
}

.usecase-card a:hover {
  text-decoration: underline;
}

.faq-section {
  padding: 89px 0 96px;
  background: #fff;
  border-top: 1px solid var(--line);
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.74fr 1.26fr;
  gap: 80px;
  align-items: start;
}

.faq-layout h2 {
  max-width: 270px;
}

.faq-items {
  border-top: 1px solid var(--line);
}

.faq-items details {
  border-bottom: 1px solid var(--line);
}

.faq-items summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 69px;
  color: #29463a;
  cursor: pointer;
  font-size: 14px;
  font-weight: 750;
  list-style: none;
}

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

.faq-items summary span {
  color: #6d9f87;
  font-size: 22px;
  font-weight: 400;
  transition: transform 180ms;
}

.faq-items details[open] summary span {
  transform: rotate(45deg);
}

.faq-items details p {
  max-width: 650px;
  margin: -2px 0 21px;
  color: #667b6d;
  font-size: 13px;
  line-height: 1.75;
}

.site-footer {
  padding: 44px 0 90px;
  border-top: 1px solid var(--line);
}

.footer-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}

.footer-brand {
  font-size: 21px;
}

.footer-layout p,
.footer-layout > span {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-layout > span a {
  color: #31775f;
  font-weight: 750;
  text-decoration: none;
}

.credit-sticker {
  position: fixed;
  z-index: 60;
  right: 20px;
  bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 13px;
  border: 1px solid rgba(27, 71, 52, 0.14);
  border-radius: 12px;
  color: #3e5747;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 12px 40px rgba(36, 67, 44, 0.15);
  font-size: 11px;
  text-decoration: none;
  backdrop-filter: blur(14px);
  transition: transform 180ms;
}

.credit-sticker:hover {
  transform: translateY(-3px);
}

.credit-sticker strong {
  color: #226a55;
}

.sticker-dot {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  color: #dfff96;
  background: var(--green);
  font-size: 13px;
}

.toast {
  position: fixed;
  z-index: 70;
  left: 50%;
  bottom: 75px;
  max-width: calc(100% - 35px);
  padding: 12px 18px;
  border-radius: 12px;
  color: #fff;
  background: #213e34;
  box-shadow: 0 14px 30px rgba(19, 55, 38, 0.15);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  transform: translateX(-50%);
}

/* Pantallas intermedias */
@media (max-width: 1090px) {
  .container {
    width: min(100% - 44px, 1200px);
  }

  .hero {
    gap: 20px;
    grid-template-columns: 1fr 0.83fr;
  }

  .hero h1 {
    font-size: clamp(49px, 6vw, 67px);
  }

  .studio-grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.75fr);
  }

  .panel-section {
    padding: 25px 23px;
  }

  .preview-panel {
    padding: 20px;
  }

  .preview-stage {
    min-height: 280px;
    padding: 20px;
  }
}

@media (max-width: 850px) {
  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 72px;
    text-align: center;
  }

  .hero-copy > p,
  .hero h1 {
    margin-right: auto;
    margin-left: auto;
  }

  .hero-tag,
  .hero-actions,
  .hero-features {
    justify-content: center;
    margin-right: auto;
    margin-left: auto;
  }

  .hero-art {
    min-height: 390px;
    max-width: 520px;
    width: 100%;
    margin: 0 auto;
  }

  .studio-grid {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    position: static;
    padding: 27px;
  }

  .preview-stage {
    min-height: 340px;
  }

  .faq-layout {
    gap: 32px;
    grid-template-columns: 1fr;
  }

  .faq-layout h2 {
    max-width: 500px;
  }
}

@media (max-width: 600px) {
  .container {
    width: calc(100% - 30px);
  }

  .nav-inner {
    height: 70px;
  }

  .brand {
    font-size: 21px;
  }

  .brand-symbol {
    width: 36px;
    height: 36px;
  }

  .header-cta {
    min-height: 39px;
    padding: 0 12px;
    gap: 8px;
    font-size: 12px;
  }

  .hero {
    gap: 5px;
    padding-top: 56px;
    padding-bottom: 58px;
  }

  .hero-tag {
    margin-bottom: 21px;
    font-size: 10px;
  }

  .hero h1 {
    font-size: clamp(42px, 10vw, 61px);
  }

  .hero-copy > p {
    font-size: 14px;
    line-height: 1.7;
  }

  .hero-actions {
    flex-direction: column;
    gap: 13px;
  }

  .hero-assurance {
    max-width: unset;
    font-size: 11px;
  }

  .hero-features {
    justify-content: center;
    margin-top: 30px;
  }

  .hero-features span {
    font-size: 10px;
  }

  .hero-art {
    min-height: 360px;
    margin-top: 27px;
  }

  .hero-sample {
    width: 240px;
    padding: 12px;
  }

  .sample-code {
    padding: 29px;
  }

  .chip-top {
    left: 0;
    top: 56px;
  }

  .chip-bottom {
    right: 0;
    bottom: 28px;
  }

  .studio-section {
    padding: 62px 0 72px;
  }

  .section-intro {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 24px;
  }

  .section-intro h2,
  .info-heading h2,
  .faq-layout h2 {
    font-size: 33px;
  }

  .privacy-label {
    font-size: 10px;
  }

  .panel-section {
    padding: 24px 17px;
  }

  .panel-title {
    gap: 10px;
    margin-bottom: 20px;
  }

  .panel-title h3 {
    font-size: 16px;
  }

  .type-tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .type-tab {
    justify-content: flex-start;
    min-height: 42px;
    padding: 8px 7px;
    gap: 5px;
    font-size: 10px;
  }

  .type-tab span {
    flex-basis: 22px;
    width: 22px;
    height: 22px;
    font-size: 12px;
  }

  .design-controls,
  .field-pair {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .form-actions {
    flex-direction: column;
  }

  .generate-button,
  .form-actions .button-outline {
    flex: unset;
    width: 100%;
  }

  .preview-panel {
    padding: 19px 15px;
  }

  .preview-stage {
    min-height: 290px;
    padding: 19px;
  }

  .download-actions .button {
    font-size: 11px;
  }

  .info-section {
    padding-top: 75px;
    padding-bottom: 70px;
  }

  .how-grid,
  .usecase-grid {
    grid-template-columns: 1fr;
  }

  .how-card {
    min-height: 200px;
  }

  .how-icon {
    margin-bottom: 26px;
  }

  .faq-section {
    padding: 64px 0 70px;
  }

  .footer-layout {
    align-items: flex-start;
    flex-direction: column;
    gap: 25px;
  }

  .credit-sticker {
    right: 9px;
    bottom: 9px;
    padding: 8px 10px;
    font-size: 10px;
  }

  .toast {
    bottom: 67px;
  }
}

@media (max-width: 370px) {
  .type-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .chip-top,
  .chip-bottom {
    font-size: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* Al imprimir se entrega el QR sin el resto de la interfaz. */
@page {
  margin: 18mm;
}

@media print {
  body {
    background: white;
  }

  .site-header,
  .hero,
  .section-intro,
  .studio-editor,
  .preview-heading,
  .qr-status,
  .download-actions,
  .utility-actions,
  .generated-content,
  .preview-tip,
  .info-section,
  .faq-section,
  .site-footer,
  .credit-sticker,
  .toast {
    display: none !important;
  }

  .studio-section,
  .studio-grid,
  .container,
  .preview-panel {
    display: block !important;
    width: 100% !important;
    max-width: none !important;
    min-height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    border: 0 !important;
    box-shadow: none !important;
    background: white !important;
  }

  .preview-stage {
    min-height: 0;
    border: 0;
    background: white;
  }

  #qr-canvas {
    width: 80mm;
    max-height: none;
    box-shadow: none;
  }
}