/* ============================================================
   D Lee Lab — styles.css
   Brand system: tokens, typography, layout, components
   ============================================================ */

/* ------------------------------------------------------------
   1. Fonts
   ------------------------------------------------------------ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&display=swap');

/* ------------------------------------------------------------
   2. Brand tokens
   ------------------------------------------------------------ */
:root {
  /* Colours */
  --slate:         #1E2A38;
  --slate-mid:     #2A3A4E;
  --yellow:        #FFD60A;
  --white:         #FFFFFF;
  --bg:            #F8F9FA;
  --tint:          #EEF1F5;
  --body:          #3D5166;
  --muted:         #6B7A8C;
  --secondary:     #8FA0B3;
  --hero-subdued:  #C8D1DB;
  --dot:           #B6C0CC;
  --border:        #E3E8EE;
  --border-strong: #D1D9E2;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Layout */
  --container:     760px;
  --container-wide:960px;
  --pad-h:         24px;
  --section-v:     64px;
  --section-v-mob: 48px;

  /* Radii */
  --r-sm:  8px;
  --r-md:  12px;
  --r-lg:  14px;
  --r-btn: 10px;
}

/* ------------------------------------------------------------
   3. Reset
   ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: var(--font); cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* ------------------------------------------------------------
   4. Typography
   ------------------------------------------------------------ */
.eyebrow {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  display: block;
  margin-bottom: 14px;
}
.eyebrow--light { color: var(--muted); }

h1, .h1 {
  font-size: clamp(40px, 5.5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.08;
  color: var(--white);
}
h2, .h2 {
  font-size: clamp(26px, 3.5vw, 34px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--slate);
}
h3, .h3 {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--slate);
}
.meta {
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
}

/* ------------------------------------------------------------
   5. Layout
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--pad-h);
  padding-right: var(--pad-h);
}
.container--wide { max-width: var(--container-wide); }

section { padding: var(--section-v) var(--pad-h); }

/* ------------------------------------------------------------
   6. Buttons
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 500;
  padding: 13px 26px;
  border-radius: var(--r-btn);
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--yellow);
  color: var(--slate);
}
.btn--primary:hover { opacity: 0.9; }

.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.22);
}
.btn--outline:hover { border-color: rgba(255,255,255,0.4); }

.btn--outline-dark {
  background: transparent;
  color: var(--slate);
  border: 1px solid var(--border-strong);
}
.btn--outline-dark:hover { border-color: var(--body); }

.btn--sm { font-size: 13px; padding: 8px 16px; border-radius: var(--r-sm); }
.btn--full { width: 100%; }

/* ------------------------------------------------------------
   7. Navigation
   ------------------------------------------------------------ */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--slate);
  height: 60px;
  display: flex;
  align-items: center;
  padding: 0 var(--pad-h);
  justify-content: space-between;
  transition: box-shadow 0.2s;
}
#nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.25); }
#nav.hidden { transform: translateY(-100%); transition: transform 0.3s; }

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav__mark-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}
.nav__wordmark {
  font-size: 15px;
  font-weight: 500;
}
.nav__wordmark span:first-child { color: var(--white); }
.nav__wordmark span:last-child  { color: var(--yellow); }

/* ------------------------------------------------------------
   8. Hero
   ------------------------------------------------------------ */
#hero {
  background: var(--slate);
  padding-top: calc(60px + var(--section-v));
  padding-bottom: var(--section-v);
}
.hero__eyebrow { color: var(--muted); }
.hero__sub {
  font-size: 17px;
  color: var(--hero-subdued);
  max-width: 440px;
  margin-top: 18px;
  margin-bottom: 30px;
}
.hero__note {
  font-size: 13px;
  color: var(--secondary);
  margin-top: 12px;
}

/* ------------------------------------------------------------
   9. Diagnostic entry
   ------------------------------------------------------------ */
#diagnostic-entry { background: var(--bg); }
.diag-entry__body {
  font-size: 17px;
  color: var(--body);
  max-width: 500px;
  margin-bottom: 32px;
}

/* Recognition trigger cards */
.trigger-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 32px;
}
.trigger-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 16px 18px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.trigger-card:hover { border-color: var(--slate); }
.trigger-card__name {
  font-size: 14px;
  font-weight: 500;
  color: var(--slate);
  margin-bottom: 5px;
}
.trigger-card__line {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.4;
}

/* ------------------------------------------------------------
   10. Diagnostic overlay
   ------------------------------------------------------------ */
#diagnostic {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--slate);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
#diagnostic.active {
  opacity: 1;
  pointer-events: all;
}

.diag__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--pad-h);
  flex-shrink: 0;
}
.diag__logo {
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}
.diag__logo span:first-child { color: var(--white); }
.diag__logo span:last-child  { color: var(--yellow); }

.diag__exit {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--secondary);
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 6px;
  transition: border-color 0.15s, color 0.15s;
}
.diag__exit:hover { border-color: rgba(255,255,255,0.35); color: var(--white); }

/* Progress bar */
.diag__progress {
  display: flex;
  gap: 5px;
  padding: 0 var(--pad-h) 32px;
  flex-shrink: 0;
}
.diag__progress-bar {
  height: 3px;
  flex: 1;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  transition: background 0.3s;
}
.diag__progress-bar.filled { background: var(--yellow); }

/* Question screen */
.diag__screen {
  display: none;
  flex-direction: column;
  align-items: center;
  flex: 1;
  padding: 0 var(--pad-h) 40px;
}
.diag__screen.active { display: flex; }

.diag__q-label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin-bottom: 20px;
  text-align: center;
}
.diag__question {
  font-size: clamp(20px, 2.8vw, 26px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--white);
  text-align: center;
  max-width: 560px;
  margin-bottom: 36px;
}
.diag__options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 560px;
}
.diag__option {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-md);
  padding: 18px 22px;
  text-align: left;
  color: var(--white);
  font-size: 15px;
  line-height: 1.55;
  transition: border-color 0.15s, background 0.15s;
}
.diag__option:hover {
  border-color: rgba(255,214,10,0.5);
  background: rgba(255,255,255,0.08);
}
.diag__option.selected {
  border-color: var(--yellow);
  background: rgba(255,214,10,0.08);
}
.diag__footer-note {
  font-size: 13px;
  color: var(--secondary);
  text-align: center;
  margin-top: 28px;
}

/* Analysis pause screen */
#diag-pause {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 40px var(--pad-h);
}
#diag-pause.active { display: flex; }

.diag__pause-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--secondary);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.diag__pause-dots {
  display: flex;
  gap: 8px;
}
.diag__pause-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--yellow);
  animation: pulseDot 1.2s ease-in-out infinite;
}
.diag__pause-dot:nth-child(2) { animation-delay: 0.2s; }
.diag__pause-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes pulseDot {
  0%, 80%, 100% { opacity: 0.2; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1); }
}

/* Result screen */
#diag-result {
  display: none;
  flex-direction: column;
  align-items: flex-start;
  flex: 1;
  padding: 0 var(--pad-h) 48px;
  max-width: calc(560px + var(--pad-h) * 2);
  margin: 0 auto;
  width: 100%;
}
#diag-result.active { display: flex; }

.result__label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin-bottom: 10px;
}
.result__type {
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--white);
  margin-bottom: 10px;
}
.result__intro {
  font-size: 16px;
  color: var(--hero-subdued);
  line-height: 1.55;
  max-width: 480px;
  margin-bottom: 30px;
}
.result__proofs {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  margin-bottom: 32px;
}
.result__proof {
  border-left: 3px solid var(--yellow);
  border-radius: 0 10px 10px 0;
  background: rgba(255,255,255,0.06);
  padding: 14px 18px;
  font-size: 14px;
  color: var(--white);
  line-height: 1.55;
}
.result__ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.result__note {
  font-size: 13px;
  color: var(--secondary);
}

/* Email gate screen */
#diag-email {
  display: none;
  flex-direction: column;
  align-items: flex-start;
  flex: 1;
  padding: 0 var(--pad-h) 48px;
  max-width: calc(480px + var(--pad-h) * 2);
  margin: 0 auto;
  width: 100%;
}
#diag-email.active { display: flex; }

.gate__title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 8px;
}
.gate__sub {
  font-size: 15px;
  color: var(--hero-subdued);
  line-height: 1.55;
  margin-bottom: 28px;
}

/* Form fields */
.form-group { margin-bottom: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--secondary);
  margin-bottom: 6px;
}
.form-label--opt { color: var(--muted); font-weight: 400; text-transform: none; letter-spacing: 0; font-size: 11px; }
.form-input {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  font-size: 15px;
  font-family: var(--font);
  color: var(--white);
  outline: none;
  transition: border-color 0.15s;
}
.form-input::placeholder { color: rgba(255,255,255,0.28); }
.form-input:focus { border-color: rgba(255,214,10,0.5); }

.gate__submit-wrap { margin-top: 8px; }
.gate__legal {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: 10px;
}

/* Confirmation screen */
#diag-confirm {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 40px var(--pad-h);
  text-align: center;
}
#diag-confirm.active { display: flex; }
.confirm__icon {
  width: 52px;
  height: 52px;
  background: rgba(255,214,10,0.12);
  border: 1px solid rgba(255,214,10,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.confirm__title {
  font-size: 24px;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 10px;
}
.confirm__sub {
  font-size: 16px;
  color: var(--hero-subdued);
  max-width: 380px;
  line-height: 1.55;
  margin-bottom: 28px;
}

/* ------------------------------------------------------------
   11. How it works — offer ladder
   ------------------------------------------------------------ */
#how-it-works { background: var(--tint); }
.ladder { display: flex; flex-direction: column; gap: 4px; margin-top: 32px; }

.ladder-gate {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
}
.ladder-gate__line {
  flex: 1;
  height: 1px;
  background: var(--border-strong);
}
.ladder-gate__text {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  white-space: nowrap;
}

.ladder-step {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 2px solid var(--dot);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: 20px 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: border-left-color 0.2s;
}
.ladder-step--mid {
  border-left: 3px solid var(--secondary);
  border-color: var(--border-strong);
}
.ladder-step--heavy {
  border-left: 4px solid var(--slate);
  border-color: var(--border-strong);
  box-shadow: 0 2px 16px rgba(30,42,56,0.07);
}
.ladder-step--dark {
  background: var(--slate);
  border: 1px solid var(--slate-mid);
  border-radius: var(--r-md);
}

.ladder-step__num {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 500;
  flex-shrink: 0;
}
.num--light {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
}
.num--mid {
  background: var(--tint);
  border: 1px solid var(--border-strong);
  color: var(--body);
}
.num--dark {
  background: var(--slate);
  color: var(--yellow);
}
.num--yellow {
  background: rgba(255,214,10,0.15);
  border: 1px solid rgba(255,214,10,0.3);
  color: var(--yellow);
}

.ladder-step__content { flex: 1; }
.ladder-step__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 5px;
}
.ladder-step__name {
  font-size: 16px;
  font-weight: 500;
  color: var(--slate);
}
.ladder-step--dark .ladder-step__name { color: var(--white); }
.ladder-step__price {
  font-size: 13px;
  color: var(--body);
}
.ladder-step--dark .ladder-step__price { color: var(--secondary); }
.price--badge {
  font-size: 12px;
  font-weight: 500;
  color: var(--yellow);
  background: var(--slate);
  padding: 2px 9px;
  border-radius: 5px;
}
.ladder-step__body {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}
.ladder-step--dark .ladder-step__body { color: var(--hero-subdued); }

/* ------------------------------------------------------------
   12. About
   ------------------------------------------------------------ */
#about { background: var(--white); }
.about__body {
  font-size: 17px;
  color: var(--body);
  line-height: 1.55;
  max-width: 540px;
  margin-bottom: 32px;
}
.proof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.proof-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 18px;
}
.proof-card__type {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: var(--yellow);
  background: var(--slate);
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}
.proof-card__body {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}

/* ------------------------------------------------------------
   13. Final CTA
   ------------------------------------------------------------ */
#final-cta {
  background: var(--slate);
  text-align: center;
}
.cta__sub {
  font-size: 16px;
  color: var(--hero-subdued);
  line-height: 1.6;
  max-width: 460px;
  margin: 16px auto 12px;
}
.cta__consequence {
  font-size: 15px;
  color: var(--secondary);
  margin-bottom: 28px;
}
.cta__closing {
  font-size: 13px;
  color: var(--muted);
  margin-top: 14px;
}

/* ------------------------------------------------------------
   14. Footer
   ------------------------------------------------------------ */
footer {
  background: var(--slate);
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 20px var(--pad-h);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer__logo {
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer__logo span:first-child { color: var(--white); }
.footer__logo span:last-child  { color: var(--yellow); }
.footer__copy { font-size: 12px; color: var(--secondary); }

/* ------------------------------------------------------------
   15. Booking page
   ------------------------------------------------------------ */
.booking-nav {
  background: var(--slate);
  height: 60px;
  display: flex;
  align-items: center;
  padding: 0 var(--pad-h);
}
.booking-hero {
  background: var(--slate);
  padding: calc(60px + 48px) var(--pad-h) 48px;
}
.booking-body { background: var(--bg); padding: 48px var(--pad-h); }

/* Cal.com embed */
.cal-embed {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  min-height: 600px;
}

/* ------------------------------------------------------------
   16. Utilities
   ------------------------------------------------------------ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}
.text-yellow { color: var(--yellow); }
.text-white  { color: var(--white); }
.text-muted  { color: var(--muted); }
.mt-sm { margin-top: 12px; }
.mt-md { margin-top: 20px; }

/* ------------------------------------------------------------
   17. Responsive
   ------------------------------------------------------------ */
@media (max-width: 640px) {
  :root {
    --section-v: var(--section-v-mob);
    --pad-h: 20px;
  }
  h1, .h1 { font-size: 38px; }
  h2, .h2 { font-size: 26px; }
  .trigger-grid  { grid-template-columns: 1fr; }
  .proof-grid    { grid-template-columns: 1fr; }
  .form-row      { grid-template-columns: 1fr; }
  .result__ctas  { flex-direction: column; }
  .result__ctas .btn { width: 100%; text-align: center; }
}