:root {
  --c-bg: #ffffff;
  --c-text: #1a1a1a;
  --c-text-light: #999999;
  --c-accent: #e50914;
  --c-line: rgba(0, 0, 0, 0.04);
  --c-input-bg: rgba(26, 26, 26, 0.03);
  --c-focus: #1a1a1a;
  --f-sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease-out: cubic-bezier(0.215, 0.61, 0.355, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-sans);
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

.grid-background {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  z-index: 0;
}

.grid-col {
  flex: 1;
  border-right: 1px solid var(--c-line);
}

.grid-col:last-child {
  border-right: none;
}

main {
  position: relative;
  z-index: 10;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem;
}

.form-step {
  display: none;
  width: 100%;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out), filter 0.25s ease;
}

.form-step.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.form-step.exiting {
  display: block;
  opacity: 0;
  transform: translateY(-20px);
  pointer-events: none;
}

#generator-container.is-busy .form-step[data-step="1"] {
  opacity: 0.55;
  filter: saturate(0.85) brightness(1.06);
  pointer-events: none;
}

h1.question-text {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 2.5rem;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.accent-dot {
  display: inline-block;
  width: 0.25em;
  height: 0.25em;
  background-color: var(--c-accent);
  margin-left: 0.05em;
  vertical-align: baseline;
}

.subtitle {
  font-size: 0.9rem;
  color: var(--c-text-light);
  margin-bottom: 1rem;
  font-weight: 400;
  line-height: 1.4;
}

.input-wrapper {
  position: relative;
  max-width: 600px;
}

.input-wrapper-wide {
  max-width: 100%;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--c-line);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-family: var(--f-sans);
  color: var(--c-text);
  padding: 0.5rem 0;
  outline: none;
  border-radius: 0;
  transition: border-color 0.3s ease;
}

textarea {
  min-height: 180px;
  resize: vertical;
  line-height: 1.35;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border-bottom-color: var(--c-focus);
}

input::placeholder,
textarea::placeholder {
  color: rgba(26, 26, 26, 0.2);
}

.nav-actions {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.btn-primary,
.btn-secondary {
  border: none;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 4px;
  text-decoration: none;
}

.btn-primary {
  position: relative;
  background: var(--c-text);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #000;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

.btn-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s ease;
}

.btn-loader {
  position: absolute;
  inset: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.btn-primary.is-loading .btn-label {
  opacity: 0;
}

.btn-primary.is-loading .btn-loader {
  opacity: 1;
}

.btn-secondary {
  background: transparent;
  color: var(--c-text);
  border: 1px solid #ddd;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  background: var(--c-input-bg);
}

.hint-text {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hint-text span {
  font-weight: 700;
}

.loader-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  display: inline-block;
  opacity: 0.25;
  animation: loaderTick 0.9s infinite ease-in-out;
  animation-play-state: paused;
}

.btn-primary.is-loading .loader-dot {
  animation-play-state: running;
}

.loader-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.loader-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes loaderTick {
  0%,
  100% {
    opacity: 0.25;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

.status-line {
  margin-top: 0.8rem;
  min-height: 1.3rem;
  color: var(--c-text-light);
  font-size: 0.95rem;
}

.status-line.error {
  color: var(--c-accent);
}

.public-link {
  display: inline-block;
  max-width: 100%;
  color: var(--c-text);
  text-decoration: none;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.25rem;
  margin-bottom: 1rem;
  overflow-wrap: anywhere;
}

.progress-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--c-line);
  z-index: 20;
}

.progress-bar {
  height: 100%;
  background: var(--c-accent);
  width: 0%;
  transition: width 0.4s var(--ease-out);
}

@media (max-width: 768px) {
  h1.question-text {
    font-size: 1.75rem;
  }

  main {
    padding: 1.5rem;
    align-items: flex-start;
    padding-top: 16vh;
  }

  .nav-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}