/*
 * Landing de registro (heyalba.ai).
 *
 * Colours, spacing, radii, type sizes and elevation come from the platform's
 * styles/tokens.css, copied next to this file at build time. The block below
 * holds the only values that file does not have yet: the hero's display sizes
 * and the motion timings. If the platform adopts them, move them there.
 */
:root {
  --text-5xl: 3rem; /* 48px */
  --text-6xl: 3.75rem; /* 60px */
  --tracking-tight: -0.025em;
  --tracking-snug: -0.02em;
  --duration-fast: 150ms;
  --duration-normal: 240ms;
  --duration-slow: 420ms;
  --demo-step-gap: 400ms;
  --demo-reply-delay: 900ms;
  --duration-typing: 1200ms;
  --duration-dot: 900ms;
  --container-max: 75rem; /* 1200px */
  --container-narrow: 60rem; /* 960px */
  --container-faq: 47.5rem; /* 760px */
  --header-height: 4.25rem; /* 68px */
  --control-height: 3rem; /* 48px */
  --control-height-lg: 3.25rem; /* 52px */
  --touch-target: 2.75rem; /* 44px */
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--space-4));
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg-surface);
  color: var(--fg-strong);
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--brand-600);
}

a:hover {
  color: var(--brand-700);
}

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-2);
  z-index: var(--z-tooltip);
  padding: var(--space-2) var(--space-4);
  background: var(--fg-strong);
  color: var(--fg-on-primary);
  border-radius: var(--radius-md);
  transform: translateY(-200%);
}

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

/* Layout */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-faq {
  max-width: var(--container-faq);
}

.section {
  padding-block: var(--space-16);
}

.band {
  background: var(--bg-subtle);
  border-block: 1px solid var(--border-subtle);
}

.band > .container-narrow {
  padding-block: var(--space-16);
}

.stack-sm {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.stack-md {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.stack-lg {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--overlay-light);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-row {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.wordmark {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  line-height: 1;
  color: var(--fg-strong);
  text-decoration: none;
}

.wordmark:hover {
  color: var(--fg-strong);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.lang-switch {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
}

.lang-switch a {
  min-width: var(--touch-target);
  height: var(--space-8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--fg-muted);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-decoration: none;
}

.lang-switch a:hover {
  color: var(--fg-strong);
}

.lang-switch a[aria-current='true'] {
  background: var(--fg-strong);
  color: var(--fg-on-primary);
}

/* Buttons */

.btn {
  min-height: var(--touch-target);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font: inherit;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.btn-primary {
  background: var(--fg-strong);
  color: var(--fg-on-primary);
}

.btn-primary:hover {
  color: var(--fg-on-primary);
  opacity: 0.88;
}

.btn-primary:disabled {
  cursor: progress;
  opacity: 0.7;
}

.btn-secondary {
  background: var(--bg-surface);
  border-color: var(--border-default);
  color: var(--fg-strong);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--fg-strong);
}

.btn-inverse {
  background: var(--bg-surface);
  color: var(--fg-strong);
}

.btn-inverse:hover {
  color: var(--fg-strong);
  opacity: 0.9;
}

.btn-link {
  padding: 0 var(--space-2);
  background: transparent;
  color: var(--brand-600);
}

.btn-link:hover {
  color: var(--brand-700);
}

.btn-sm {
  min-height: 2.25rem;
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
}

.btn-lg {
  min-height: var(--control-height-lg);
  padding: 0 var(--space-8);
  font-size: var(--text-md);
}

.btn-block {
  width: 100%;
}

/* Hero */

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(28.75rem, 100%), 1fr));
  gap: var(--space-12);
  align-items: center;
  padding-block: var(--space-12) var(--space-16);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  border-radius: var(--radius-full);
  color: var(--brand-700);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
}

.badge-dot {
  width: var(--space-1-5);
  height: var(--space-1-5);
  border-radius: var(--radius-full);
  background: var(--brand-600);
}

.hero-title {
  font-size: clamp(var(--text-4xl), 1.2rem + 3.4vw, var(--text-6xl));
  line-height: 1.05;
  letter-spacing: var(--tracking-tight);
  font-weight: var(--weight-bold);
  text-wrap: balance;
}

.hero-lead {
  max-width: 34rem;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--fg-default);
  text-wrap: pretty;
}

/* Sign-up card */

.signup-card {
  max-width: 34rem;
  padding: var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--elevation-3);
}

.signup-card:focus {
  outline: none;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(12.5rem, 100%), 1fr));
  gap: var(--space-3);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
}

.field input {
  height: var(--control-height);
  padding: 0 var(--space-4);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  color: var(--fg-strong);
  font: inherit;
  /* 16px keeps iOS Safari from zooming into the field */
  font-size: var(--text-md);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.field input::placeholder {
  color: var(--fg-muted);
}

.field input:focus {
  outline: none;
  border-color: var(--brand-600);
  box-shadow: 0 0 0 3px var(--primary-alpha-20);
}

.field input[aria-invalid='true'] {
  border-color: var(--destructive);
}

.field-error,
.form-error {
  font-size: var(--text-sm);
  color: var(--destructive);
}

.turnstile-slot:empty {
  display: none;
}

.fine-print {
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--fg-muted);
}

.signup-success {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.signup-success[hidden],
.signup-form[hidden] {
  display: none;
}

.success-icon {
  width: var(--control-height);
  height: var(--control-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--success-bg);
  color: var(--success-700);
}

.success-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.success-title {
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
}

.success-title:focus {
  outline: none;
}

.success-body {
  color: var(--fg-default);
  line-height: 1.6;
}

.success-body strong {
  color: var(--fg-strong);
}

.success-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Hero visual */

.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 4.4;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-quaternary);
}

.photo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6) var(--space-6) 11rem;
  color: var(--fg-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-align: center;
}

.chat-card {
  position: absolute;
  left: var(--space-6);
  right: var(--space-6);
  bottom: var(--space-6);
  max-width: 25rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--elevation-4);
  font-size: var(--text-sm);
}

.bubble-user {
  align-self: flex-end;
  max-width: 85%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  line-height: 1.5;
}

.assistant {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--fg-default);
  line-height: 1.5;
}

.assistant-name {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--fg-strong);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--fg-default);
}

.chip-lg {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--fg-strong);
}

/* Section heads */

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.section-head.centered {
  align-items: center;
  text-align: center;
}

.section-title {
  font-size: clamp(var(--text-3xl), 1.2rem + 2vw, var(--text-4xl));
  line-height: 1.15;
  letter-spacing: var(--tracking-snug);
  text-wrap: balance;
}

.section-title-wide {
  max-width: 36rem;
}

.section-lead {
  max-width: 36rem;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--fg-muted);
}

/* Demo */

.demo-window {
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--elevation-2);
}

.demo-bar,
.demo-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
}

.demo-bar {
  border-bottom: 1px solid var(--border-subtle);
}

.demo-footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
}

.demo-name {
  font-weight: var(--weight-bold);
}

.demo-hint {
  font-size: var(--text-sm);
  color: var(--fg-muted);
}

.demo-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding: var(--space-6);
}

.demo-body .bubble-user {
  max-width: min(32.5rem, 88%);
  font-size: var(--text-md);
}

.demo-text {
  max-width: 40rem;
  color: var(--fg-default);
  line-height: 1.6;
}

.day-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(11.875rem, 100%), 1fr));
  gap: var(--space-3);
}

.day-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.day-card h3 {
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
}

.day-card p {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--fg-muted);
}

.day-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--brand-700);
}

.typing {
  display: none;
  align-items: center;
  gap: var(--space-1);
  height: 1.25rem;
}

.typing span {
  width: var(--space-1-5);
  height: var(--space-1-5);
  border-radius: var(--radius-full);
  background: var(--fg-muted);
}

/*
 * The conversation plays once the demo scrolls into view. Without JS, or
 * with reduced motion, every step is simply visible.
 */
.js .demo-window:not(.is-playing) .demo-step {
  opacity: 0;
}

.js .demo-window.is-playing .demo-step {
  animation: step-in var(--duration-slow) var(--ease-out) both;
  animation-delay: calc(var(--step) * var(--demo-step-gap) + var(--demo-reply-delay));
}

.js .demo-window.is-playing .demo-step[style*='--step: 0'] {
  animation-delay: 0ms;
}

.js .demo-window.is-playing .typing {
  display: flex;
  animation: typing var(--duration-typing) var(--ease-in-out) both;
}

.js .demo-window.is-playing .typing span {
  animation: dot var(--duration-dot) var(--ease-in-out) infinite;
}

.js .demo-window.is-playing .typing span:nth-child(2) {
  animation-delay: var(--duration-fast);
}

.js .demo-window.is-playing .typing span:nth-child(3) {
  animation-delay: calc(var(--duration-fast) * 2);
}

@keyframes step-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes typing {
  0% {
    opacity: 0;
  }
  15%,
  85% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

@keyframes dot {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}

/* Benefits */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(17.5rem, 100%), 1fr));
  gap: var(--space-6);
}

.benefit {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--bg-subtle);
  border-radius: var(--radius-xl);
}

.benefit h3 {
  font-size: var(--text-xl);
  line-height: var(--leading-tight);
}

.benefit p {
  color: var(--fg-default);
  line-height: 1.6;
}

.benefit-icon {
  width: var(--control-height);
  height: var(--control-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

/* Steps */

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(16.25rem, 100%), 1fr));
  gap: var(--space-6);
}

.step {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 2px solid var(--border-default);
}

.step-active {
  border-top-color: var(--fg-strong);
}

.step h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
}

.step p {
  color: var(--fg-default);
  line-height: 1.6;
}

.step-num {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--fg-muted);
}

/* FAQ */

.faq-list {
  border-top: 1px solid var(--border-subtle);
}

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

.faq-list summary {
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  list-style: none;
  cursor: pointer;
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
}

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

.faq-icon {
  flex-shrink: 0;
  font-size: var(--text-2xl);
  font-weight: var(--weight-regular);
  line-height: 1;
  color: var(--fg-muted);
  transition: transform var(--duration-normal) var(--ease-out);
}

.faq-list details[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-list details p {
  padding-bottom: var(--space-5);
  color: var(--fg-default);
  line-height: 1.6;
}

/* Final call to action */

.final-cta-wrap {
  padding-bottom: var(--space-16);
}

.final-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-16) var(--space-6);
  background: var(--fg-strong);
  border-radius: var(--radius-xl);
  text-align: center;
}

.final-title {
  max-width: 40rem;
  font-size: clamp(var(--text-3xl), 1.2rem + 2.4vw, var(--text-5xl));
  line-height: 1.1;
  letter-spacing: var(--tracking-snug);
  color: var(--fg-on-primary);
  text-wrap: balance;
}

.final-lead {
  max-width: 32rem;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--border-default);
}

/* Legal pages (privacy notice) */

.legal {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.legal-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--fg-muted);
}

.legal-body h2 {
  margin-top: var(--space-6);
  font-size: var(--text-2xl);
  line-height: 1.3;
  color: var(--fg-strong);
}

.legal-body ul,
.legal-body ol {
  padding-inline-start: var(--space-6);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border-subtle);
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-8) var(--space-12);
  font-size: var(--text-sm);
  color: var(--fg-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer-links a {
  color: var(--fg-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--fg-strong);
}

/* Mobile sticky call to action: phones only, once the form is off screen */

.sticky-cta {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  padding: var(--space-3) var(--space-4) calc(var(--space-3) + env(safe-area-inset-bottom));
  background: var(--overlay-light);
  border-top: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(120%);
  pointer-events: none;
  transition:
    transform var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out);
}

.sticky-cta.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

@media (min-width: 768px) {
  .sticky-cta {
    display: none;
  }
}

@media (max-width: 767px) {
  .header-actions .btn-secondary {
    padding: 0 var(--space-3);
  }

  .hero {
    padding-block: var(--space-8) var(--space-12);
    gap: var(--space-10);
  }

  .signup-card {
    padding: var(--space-5);
  }

  .demo-body,
  .demo-bar,
  .demo-footer {
    padding-inline: var(--space-4);
  }

  .site-footer {
    padding-bottom: 5.5rem; /* room for the sticky call to action */
  }
}

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

  .js .demo-window .demo-step,
  .js .demo-window:not(.is-playing) .demo-step {
    opacity: 1;
    animation: none;
  }

  .js .demo-window.is-playing .typing {
    display: none;
  }

  .sticky-cta,
  .faq-icon,
  .btn {
    transition: none;
  }
}

/* 404 */

.not-found-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
}