/* ==========================================================================
   Formula Coaching — Dosage calculator page
   Standalone free-tool page, recreated from the design handoff
   (design_handoff_dosage_calculator). Brand tokens are carried over verbatim
   from the handoff's tokens/*.css; fonts are self-hosted because the site's
   security policy blocks Google Fonts.
   ========================================================================== */

/* ---------- fonts ---------- */
@font-face { font-family: 'Archivo Black'; src: url('fonts/archivoblack-400.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Poppins'; src: url('fonts/poppins-400.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Poppins'; src: url('fonts/poppins-600.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: 'Poppins'; src: url('fonts/poppins-700.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'Poppins'; src: url('fonts/poppins-800.woff2') format('woff2'); font-weight: 800; font-style: normal; font-display: swap; }

/* ---------- brand tokens (from the handoff tokens/*.css) ---------- */
:root {
  --navy: #071B2D;          /* page background tone (was #0A263E) */
  --navy-deep: #05141F;     /* deeper page tone (was #071B2C) */
  --navy-ink: #0A263E;      /* original navy, kept for text on lime/blue buttons */
  --dusk: #153A53;
  --peptide-blue: #61BCD8;
  --peptide-blue-light: #8FD2E6;
  --moss: #E2FF68;
  --crisp-white: #FFFFFF;
  --fg-on-dark: #FFFFFF;
  --fg-on-dark-muted: #9FB4C4;
  --fg-on-light: #0A263E;
  --fg-on-light-muted: #4A6478;
  --surface-page: #0A263E;
  --surface-card: #153A53;
  --surface-light: #FFFFFF;
  --border-on-dark: rgba(255,255,255,0.14);
  --border-on-light: rgba(10,38,62,0.14);
  --accent-primary: var(--peptide-blue);
  --accent-highlight: var(--moss);
  --gradient-bar: linear-gradient(90deg, var(--peptide-blue) 0%, var(--moss) 100%);

  --font-display: 'Archivo Black', 'Poppins', sans-serif;
  --font-body: 'Poppins', sans-serif;
  --tracking-label: 0.14em;
  --tracking-tight: -0.01em;
  --lh-tight: 1.0;
  --lh-heading: 1.08;
  --lh-body: 1.5;

  --space-1: 4px;  --space-2: 8px;   --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px;  --space-7: 48px; --space-8: 64px;
  --radius-sm: 8px; --radius-md: 16px; --radius-lg: 28px; --radius-pill: 999px;

  --shadow-card: 0 24px 60px rgba(7,27,44,0.35);
  --shadow-soft: 0 8px 24px rgba(7,27,44,0.22);
  --ease-standard: cubic-bezier(.2,.8,.2,1);
  --dur-fast: 150ms;
  --dur-base: 260ms;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--navy); }
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  color: var(--fg-on-dark);
}
[hidden] { display: none !important; }
a { color: var(--peptide-blue); text-decoration: none; }
a:hover { color: var(--peptide-blue-light); }
input::placeholder { color: rgba(159,180,196,0.45); }
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }
button { font-family: var(--font-body); cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 2px solid var(--peptide-blue);
  outline-offset: 2px;
}
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 10;
  background: var(--moss); color: var(--navy-ink);
  padding: 10px 16px; font-weight: 700; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- gradient bar ---------- */
.grad-bar { height: 6px; background: var(--gradient-bar); }

/* ---------- header ---------- */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 22px 32px;
  border-bottom: 1px solid var(--border-on-dark);
}
.brand-mark {
  font-family: var(--font-display); font-weight: 400; font-size: 20px;
  letter-spacing: 0.02em; text-transform: uppercase; color: var(--crisp-white);
}
.brand-mark:hover { color: var(--crisp-white); opacity: 0.85; }
.brand-mark .dot { color: var(--peptide-blue); }
.header-right { display: flex; align-items: center; gap: 14px; }
.back-link { font-size: 14px; font-weight: 600; white-space: nowrap; }

/* ---------- pills ---------- */
.pill {
  display: inline-flex; align-items: center; height: 36px; padding: 0 16px;
  border-radius: var(--radius-pill); border: 1px solid;
  font-size: 12px; font-weight: 700; letter-spacing: var(--tracking-label);
  text-transform: uppercase; white-space: nowrap;
}
.pill--blue { border-color: var(--peptide-blue); color: var(--peptide-blue); }
.pill--light { border-color: var(--border-on-dark); color: var(--crisp-white); }

/* ---------- main column ---------- */
.page-main {
  width: 100%; max-width: 820px; margin: 0 auto;
  padding: 56px 24px 72px;
  display: flex; flex-direction: column; gap: 40px;
}

/* ---------- hero ---------- */
.hero { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 18px; }
.kicker {
  font-size: 15px; font-weight: 700; letter-spacing: var(--tracking-label);
  text-transform: uppercase; color: var(--peptide-blue);
}
.kicker--moss { color: var(--moss); }
.hero h1 {
  margin: 0; font-family: var(--font-display); font-weight: 400;
  font-size: clamp(38px, 7vw, 60px); line-height: 1.02; letter-spacing: 0.01em;
  text-transform: uppercase; color: var(--crisp-white); text-wrap: balance;
}
.hero h1 .accent { color: var(--moss); }
.hero-sub {
  margin: 0; max-width: 560px; font-size: 17px; line-height: 1.55;
  color: var(--fg-on-dark-muted); text-wrap: pretty;
}

/* ---------- cards ---------- */
.card {
  background: var(--surface-card);
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.calc-card { overflow: hidden; }

/* ---------- mode tabs ---------- */
.tab-row { display: flex; gap: 8px; padding: 20px 24px 0; }
.tab {
  flex: 1; padding: 13px 20px;
  border-radius: var(--radius-pill); border: 1px solid var(--border-on-dark);
  background: transparent; color: var(--fg-on-dark-muted);
  font-weight: 700; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase;
  transition: opacity var(--dur-fast) ease;
}
.tab.is-active {
  background: var(--peptide-blue); border-color: var(--peptide-blue); color: var(--navy-ink);
}
.tab:hover { opacity: 0.85; }
.tab:active { transform: scale(0.97); }

/* ---------- inputs ---------- */
.calc-body { padding: 28px 24px 8px; }
.input-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field-label {
  font-size: 12px; font-weight: 700; letter-spacing: var(--tracking-label);
  text-transform: uppercase; color: var(--peptide-blue);
}
.field-label.is-optional { color: var(--fg-on-dark-muted); }
.field input {
  padding: 14px 16px; border-radius: 12px;
  border: 1px solid var(--border-on-dark); background: var(--navy-deep);
  color: var(--crisp-white); font-family: var(--font-body);
  font-size: 17px; font-weight: 600; outline: none;
}
.field input:focus { border-color: var(--peptide-blue); }

/* ---------- injections per week ---------- */
.freq-block { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; }
.freq-row { display: flex; gap: 8px; flex-wrap: wrap; }
.freq-btn {
  min-width: 46px; padding: 10px 0; border-radius: 10px;
  border: 1px solid var(--border-on-dark); background: transparent;
  color: var(--fg-on-dark-muted); font-weight: 700; font-size: 14px;
  transition: opacity var(--dur-fast) ease;
}
.freq-btn.is-active {
  background: var(--peptide-blue); border-color: var(--peptide-blue); color: var(--navy-ink);
}
.freq-btn:hover { opacity: 0.85; }
.freq-btn:active { transform: scale(0.97); }

/* ---------- results ---------- */
.results-wrap { padding: 26px 24px 28px; }
.results { display: flex; flex-direction: column; gap: 22px; }
.empty-state {
  border: 1.5px dashed var(--border-on-dark); border-radius: var(--radius-md);
  padding: 34px 24px; text-align: center;
  color: var(--fg-on-dark-muted); font-size: 15px;
}

.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px;
}
.stat {
  background: var(--navy-deep); border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-md); padding: 18px 16px;
  display: flex; flex-direction: column; gap: 6px;
}
.stat-label {
  font-size: 11px; font-weight: 700; letter-spacing: var(--tracking-label);
  text-transform: uppercase; color: var(--fg-on-dark-muted);
}
.stat-value { font-family: var(--font-display); font-weight: 400; font-size: 26px; color: var(--crisp-white); }
.stat-value--moss { color: var(--moss); }
.stat-value--blue { color: var(--peptide-blue); }
.stat-sub { font-size: 13px; color: var(--fg-on-dark-muted); }

/* ---------- syringe fill ---------- */
.block-head {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 12px; flex-wrap: wrap;
}
.block-label {
  font-size: 12px; font-weight: 700; letter-spacing: var(--tracking-label);
  text-transform: uppercase; color: var(--peptide-blue);
}
.block-meta { font-size: 13px; font-weight: 600; color: var(--fg-on-dark-muted); }
.syringe-block, .schedule-block { display: flex; flex-direction: column; gap: 12px; }
.syringe {
  position: relative; height: 54px;
  border: 1px solid var(--border-on-dark); border-radius: 12px;
  background: var(--navy-deep); overflow: hidden;
}
.syringe-fill {
  position: absolute; left: 0; top: 0; bottom: 0; width: 0%;
  background: linear-gradient(90deg, var(--peptide-blue), var(--moss));
  opacity: 0.9; transition: width 0.35s ease;
}
.tick {
  position: absolute; top: 0; bottom: 0;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 6px 0 5px;
}
.tick-line { width: 1px; height: 12px; background: rgba(255,255,255,0.35); }
.tick-num {
  font-size: 10px; font-weight: 600; color: rgba(255,255,255,0.55);
  transform: translateX(3px);
}
.overfill-note { font-size: 13px; font-weight: 600; color: var(--moss); }

/* ---------- weekly schedule ---------- */
.day-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.day-chip {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 12px 4px; border-radius: 12px;
  border: 1px solid var(--border-on-dark); background: var(--navy-deep);
}
.day-name {
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em;
  color: var(--fg-on-dark-muted);
}
.day-dot { width: 7px; height: 7px; border-radius: 50%; background: transparent; }
.day-chip.is-on { background: var(--peptide-blue); border-color: var(--peptide-blue); }
.day-chip.is-on .day-name { color: var(--navy-ink); }
.day-chip.is-on .day-dot { background: var(--navy); }

/* ---------- disclaimer ---------- */
.disclaimer {
  display: flex; flex-direction: column; align-items: center;
  gap: 14px; text-align: center;
}
.disclaimer p {
  margin: 0; max-width: 600px; font-size: 13px; line-height: 1.6;
  color: var(--fg-on-dark-muted); text-wrap: pretty;
}

/* ---------- email capture ---------- */
.signup-card {
  padding: 36px 28px;
  display: flex; flex-direction: column; align-items: center;
  gap: 18px; text-align: center;
}
.signup-card h2 {
  margin: 0; font-family: var(--font-display); font-weight: 400;
  font-size: clamp(24px, 4vw, 32px); line-height: 1.08;
  text-transform: uppercase; color: var(--crisp-white);
}
.signup-sub {
  margin: 0; max-width: 480px; font-size: 15px; line-height: 1.55;
  color: var(--fg-on-dark-muted); text-wrap: pretty;
}
.signup-form {
  width: 100%; max-width: 460px;
  display: flex; flex-direction: column; gap: 12px;
}
.name-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.signup-form input {
  padding: 14px 16px; border-radius: 12px;
  border: 1px solid var(--border-on-dark); background: var(--navy-deep);
  color: var(--crisp-white); font-family: var(--font-body); font-size: 15px;
  outline: none; width: 100%;
}
.signup-form input:focus { border-color: var(--peptide-blue); }
.submit-btn {
  padding: 16px 28px; border-radius: var(--radius-pill); border: none;
  background: var(--moss); color: var(--navy-ink);
  font-weight: 800; font-size: 14px; letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  transition: opacity var(--dur-fast) ease;
}
.submit-btn:hover { opacity: 0.85; }
.submit-btn:active { transform: scale(0.97); }
.form-note { font-size: 12px; color: var(--fg-on-dark-muted); }
.config-note { font-size: 13px; font-weight: 600; color: var(--moss); }
.success-box {
  border: 1px solid var(--peptide-blue); border-radius: var(--radius-md);
  padding: 20px 28px; color: var(--peptide-blue);
  font-weight: 600; font-size: 15px;
}

/* ---------- footer ---------- */
.site-footer {
  margin-top: auto;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 34px 24px 40px;
  border-top: 1px solid var(--border-on-dark);
}
.foot-mark {
  font-family: var(--font-display); font-weight: 400; font-size: 22px;
  text-transform: uppercase; color: rgba(255,255,255,0.35);
}
.foot-line { font-size: 12px; color: var(--fg-on-dark-muted); }

/* ---------- small screens ---------- */
@media (max-width: 420px) {
  .site-header { padding: 18px 16px; }
  .header-right { gap: 10px; }
  .back-link { font-size: 13px; }
}
@media (max-width: 360px) {
  .site-header .pill { display: none; }
  .day-grid { gap: 6px; }
  .day-name { font-size: 10px; letter-spacing: 0.04em; }
}