/* ─────────────────────────────────────────────────
   spndlss — Design System CSS
   Aesthetic: Editorial Brutalism
   Fonts: Clash Grotesk · DM Sans · Geist Mono
   ───────────────────────────────────────────────── */

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; color-scheme: dark; }
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ─── Design tokens ─── */
:root {
  --bg:              #0A0A0A;
  --bg-alt:          #141414;
  --surface:         #1A1A1A;
  --border:          #2A2A2A;
  --text:            #EFEFEF;
  --text-secondary:  #888888;
  --text-tertiary:   #555555;
  --accent:          #C3FF00;
  --accent-dim:      rgba(195, 255, 0, 0.10);
  --accent-border:   rgba(195, 255, 0, 0.22);
  --error:           #FF4444;
  --success:         #00CC66;

  --font-display: 'Clash Grotesk', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'Geist Mono', monospace;

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-full: 9999px;

  --max-w: 640px;
  --max-w-wide: 1100px;
  --gutter: clamp(20px, 5vw, 48px);
  --section-gap: clamp(72px, 12vw, 120px);
}

/* ─── Base ─── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}

/* ─── Layout ─── */
.container {
  width: 100%;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

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

/* ─── Nav ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav__wordmark {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.nav__cta {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  transition: opacity 100ms ease-out;
}

.nav__cta:hover { opacity: 0.75; }

/* ─── Counter pill ─── */
.counter-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-full);
  padding: 5px 14px;
  margin-bottom: 28px;
}

.counter-pill__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.counter-pill__text {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* ─── Hero ─── */
.hero {
  padding: clamp(52px, 10vw, 96px) 0 clamp(48px, 8vw, 80px);
  border-bottom: 1px solid var(--border);
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--text);
  margin-bottom: 20px;
  max-width: 680px;
}

.hero__headline .accent { color: var(--accent); }

.hero__sub {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 480px;
  margin-bottom: 40px;
}

/* ─── Quiz ─── */
.quiz {
  max-width: 520px;
}

.quiz__step-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
}

.quiz__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
  transition: background 200ms ease-out;
}

.quiz__dot--active { background: var(--accent); }
.quiz__dot--done   { background: var(--text-tertiary); }

.quiz__step-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  margin-left: 4px;
  font-variant-numeric: tabular-nums;
}

.quiz__question {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.quiz__options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 13px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  text-align: left;
  transition: border-color 100ms ease-out, color 100ms ease-out, background 100ms ease-out;
}

.quiz__option:hover {
  border-color: var(--text-tertiary);
  color: var(--text);
}

.quiz__option--selected {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
}

.quiz__option__check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 100ms, background 100ms;
}

.quiz__option--selected .quiz__option__check {
  background: var(--accent);
  border-color: var(--accent);
}

.quiz__option__check svg {
  display: none;
}

.quiz__option--selected .quiz__option__check svg {
  display: block;
}

/* ─── Quiz state transitions ─── */
.quiz__step {
  animation: stepIn 200ms ease-out both;
}

@keyframes stepIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Result ─── */
.result {
  max-width: 520px;
  animation: stepIn 200ms ease-out both;
}

.result__label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.result__number {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--accent);
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.result__period {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.625rem);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.result__breakdown {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.result__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.result__row-label {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.result__row-val {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

/* ─── Email form ─── */
.form {
  display: flex;
  gap: 8px;
  max-width: 480px;
}

.form__input {
  flex: 1;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text);
  outline: none;
  transition: border-color 100ms ease-out;
}

.form__input::placeholder { color: var(--text-tertiary); }

.form__input:focus { border-color: var(--text-tertiary); }

.form__input--error { border-color: var(--error) !important; }

.form__submit {
  flex-shrink: 0;
  background: var(--accent);
  color: #0A0A0A;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  transition: opacity 100ms ease-out;
  white-space: nowrap;
}

.form__submit:hover   { opacity: 0.88; }
.form__submit:active  { opacity: 0.75; }
.form__submit:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.form__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 12px;
}

.form__error {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--error);
  margin-top: 10px;
  display: none;
}

.form__error--visible { display: block; }

/* ─── Success / post-signup ─── */
.success {
  max-width: 520px;
  animation: stepIn 200ms ease-out both;
}

.success__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}

.success__headline {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--text);
  margin-bottom: 16px;
}

.success__headline .accent { color: var(--accent); font-variant-numeric: tabular-nums; }

.success__sub {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 420px;
  margin-bottom: 28px;
}

.share-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-share-copy {
  flex: 1;
  min-width: 160px;
  background: var(--accent);
  color: #0A0A0A;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 13px 20px;
  border-radius: var(--radius-sm);
  transition: opacity 100ms;
  text-align: center;
}

.btn-share-copy:hover { opacity: 0.88; }

.btn-share-x {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 13px 20px;
  border-radius: var(--radius-sm);
  transition: border-color 100ms;
}

.btn-share-x:hover { border-color: var(--text-secondary); }

.copy-confirm {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--success);
  margin-top: 10px;
  opacity: 0;
  transition: opacity 200ms;
}

.copy-confirm--visible { opacity: 1; }

/* ─── Hidden utility ─── */
.hidden { display: none !important; }

/* ─── Section base ─── */
section {
  padding: var(--section-gap) 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type { border-bottom: none; }

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--text-tertiary);
  flex-shrink: 0;
}

/* ─── Problem section ─── */
.problem__headline {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
  max-width: 580px;
  margin-bottom: 52px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (max-width: 520px) {
  .stat-grid { grid-template-columns: 1fr; }
}

.stat-card {
  background: var(--bg);
  padding: 28px 24px;
}

.stat-card:hover { background: var(--bg-alt); }

.stat-card__number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.stat-card__label {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ─── Solution section ─── */
.solution__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--text);
  max-width: 640px;
  margin-bottom: 24px;
}

.solution__headline .accent { color: var(--accent); }

.solution__sub {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 440px;
  line-height: 1.65;
  margin-bottom: 48px;
}

/* Insight preview block */
.insight-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 480px;
  overflow: hidden;
}

.insight-preview__header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.insight-preview__title {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
}

.insight-preview__live {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--success);
}

.live-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--success);
}

.insight-preview__body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.insight-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.insight-row__left {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.insight-row__name {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

.insight-row__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
}

.insight-row__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.insight-row__val {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.insight-row__delta {
  font-family: var(--font-mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.insight-row__delta--up   { color: var(--error); }
.insight-row__delta--down { color: var(--success); }

.insight-preview__alert {
  margin: 0 20px 20px;
  padding: 12px 16px;
  background: rgba(255, 68, 68, 0.07);
  border: 1px solid rgba(255, 68, 68, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.alert__icon {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--error);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  margin-top: 1px;
}

.alert__text {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.alert__text strong { color: var(--text); }

/* ─── How it works ─── */
.how__headline {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 52px;
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.step:first-child { border-top: none; }

.step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.step__content { }

.step__title {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 8px;
}

.step__desc {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ─── Benefits ─── */
.benefits__headline {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--text);
  max-width: 580px;
  margin-bottom: 48px;
}

.benefit-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 560px;
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.benefit-item:last-child { border-bottom: 1px solid var(--border); }

.benefit-item__marker {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.benefit-item__content { }

.benefit-item__title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 4px;
}

.benefit-item__desc {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ─── Bottom CTA ─── */
.cta__headline {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--text);
  margin-bottom: 20px;
  max-width: 560px;
}

.cta__headline .accent { color: var(--accent); }

.cta__sub {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 420px;
  line-height: 1.65;
  margin-bottom: 36px;
}

.cta__urgency {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 14px;
  letter-spacing: 0.03em;
}

/* ─── Footer ─── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__wordmark {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-tertiary);
}

.footer__note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
}

.footer__contact {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}
.footer__contact:hover { color: var(--text); }

/* ─── Responsive ─── */
@media (max-width: 600px) {
  .form {
    flex-direction: column;
  }
  .form__submit {
    width: 100%;
    padding: 15px 20px;
  }
  .share-actions {
    flex-direction: column;
  }
  .btn-share-copy,
  .btn-share-x {
    width: 100%;
    text-align: center;
  }
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: 1fr;
    max-width: 560px;
  }
}

/* ─── Reduced motion ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}