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

:root {
  --bg:       #f4f1eb;
  --surface:  #ffffff;
  --text:     #111111;
  --muted:    #888880;
  --border:   #d8d4cc;
  --accent:   #7a5c1e;
  --accent-bg: rgba(122, 92, 30, 0.08);
  --error:    #b83232;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
}

/* ── App shell ── */
#app {
  position: relative;
  width: 100%;
  min-height: 100dvh;
  overflow: hidden;
}

/* ── Progress bar ── */
.progress-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--border);
  z-index: 10;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Cards wrapper ── */
.cards-wrapper {
  position: relative;
  width: 100%;
  min-height: 100dvh;
}

/* ── Single card ── */
.card {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 3.5rem 1.75rem 2.5rem;
  transform: translateX(100%);
  will-change: transform;
  background: var(--bg);
}

.card.active  { transform: translateX(0);     transition: transform 0.38s cubic-bezier(0.4, 0, 0.2, 1); }
.card.exiting { transform: translateX(-100%); transition: transform 0.38s cubic-bezier(0.4, 0, 0.2, 1); }

/* ── Step indicator ── */
.step-indicator {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: auto;
  padding-top: 0.5rem;
}

/* ── Card body ── */
.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  padding: 2rem 0;
}

/* ── Question text ── */
.card-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
}

.card-question {
  font-family: 'Share Tech Mono', monospace;
  font-size: clamp(1.2rem, 5.5vw, 1.8rem);
  line-height: 1.45;
  color: var(--text);
  letter-spacing: 0.01em;
}

.card-example {
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  color: var(--muted);
  font-style: italic;
  line-height: 1.5;
}

/* ── Input ── */
.card-input-wrap {
  position: relative;
  margin-top: 0.5rem;
}

.card-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--border);
  color: var(--text);
  font-family: 'Share Tech Mono', monospace;
  font-size: clamp(1.3rem, 5.5vw, 1.8rem);
  letter-spacing: 0.05em;
  padding: 0.6rem 0 0.75rem;
  outline: none;
  -webkit-appearance: none;
  transition: border-color 0.2s;
  caret-color: var(--accent);
}

.card-input::placeholder {
  color: #c8c4bc;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

.card-input:focus {
  border-bottom-color: var(--accent);
}

.card-input.error {
  border-bottom-color: var(--error);
}

.card-input-line {
  position: absolute;
  bottom: 0; left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.card-input:focus ~ .card-input-line {
  width: 100%;
}

.error-msg {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.72rem;
  color: var(--error);
  margin-top: 0.6rem;
  display: none;
  letter-spacing: 0.05em;
}

.error-msg.visible { display: block; }

/* ── CTA button ── */
.card-footer {
  padding-top: 2rem;
}

.btn-next {
  width: 100%;
  background: var(--text);
  color: var(--bg);
  border: none;
  border-radius: 3px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 1.1rem 1.5rem;
  cursor: pointer;
  transition: opacity 0.15s;
  -webkit-appearance: none;
}

.btn-next:active   { opacity: 0.7; }
.btn-next:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-next.loading  { opacity: 0.5; cursor: not-allowed; letter-spacing: 0.35em; }

/* ── Welcome card ── */
.card-welcome .show-title {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}

.card-welcome .welcome-heading {
  font-family: 'Share Tech Mono', monospace;
  font-size: clamp(1.6rem, 8vw, 2.6rem);
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.card-welcome .welcome-sub {
  font-family: 'Inter', sans-serif;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.card-welcome .welcome-rule {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--accent-bg);
  border-left: 2px solid var(--accent);
  padding: 0.7rem 1rem;
  margin-bottom: 0.5rem;
}

/* ── Success card ── */
.card-success {
  align-items: center;
  justify-content: center;
  text-align: center;
}

.success-check {
  width: 52px;
  height: 52px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 2rem;
}

.success-check svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent);
  stroke-width: 2;
  fill: none;
}

.success-heading {
  font-family: 'Share Tech Mono', monospace;
  font-size: clamp(2rem, 8vw, 2.8rem);
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: 0.04em;
}

.success-sub {
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.8;
}

.success-sub strong {
  color: var(--accent);
  font-weight: 500;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.88rem;
}