/* ═══════════════════════════════════════════════════════
   Zerocode — Operational Bottleneck Calculator
   styles.css
═══════════════════════════════════════════════════════ */

/* ── 1. Variables & Reset ───────────────────────────── */
:root {
  /* ── Brand palette (Zerocode identity) ── */
  --navy-dark:    #001B43;
  --navy-mid:     #303481;
  --navy-hover:   #252870;
  --cyan:         #17DBFB;
  --cyan-bg:      #edfaff;

  /* ── Aliases ── */
  --primary:      var(--navy-dark);
  --accent:       var(--navy-mid);
  --accent-hover: var(--navy-hover);
  --accent-bg:    var(--cyan-bg);
  --highlight:    var(--cyan);

  /* ── Neutrals ── */
  --white:     #ffffff;
  --gray-50:   #f8f9fa;
  --gray-100:  #f1f3f5;
  --gray-200:  #e9ecef;
  --gray-300:  #dee2e6;
  --gray-400:  #ced4da;
  --gray-500:  #adb5bd;
  --gray-600:  #6c757d;
  --gray-700:  #495057;
  --gray-800:  #343a40;
  --gray-900:  #212529;
  --red:       #dc3545;
  --linkedin:  #0077B5;

  /* ── Type scale ── */
  --text-xs:   11px;
  --text-sm:   12px;
  --text-base: 13px;
  --text-md:   14px;
  --text-lg:   15px;

  --font:         'Open Sans', Arial, Helvetica, sans-serif;
  --radius:       8px;
  --radius-lg:    10px;
  --shadow:       0 1px 12px rgba(0, 0, 0, 0.07);
  --shadow-card:  0 4px 20px rgba(48, 52, 129, 0.18);
  --transition:   0.22s ease;

  /* ── Progress bar height — referenced for padding offsets ── */
  --bar-h: 44px;
}

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

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── 2. Progress Bar ───────────────────────────────── */
.progress-container {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--bar-h);
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
}

.progress-container.hidden { display: none; }

.progress-bar-track {
  flex: 1;
  height: 4px;
  background: var(--gray-200);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--highlight);
  border-radius: 2px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-text {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--navy-mid);
  min-width: 30px;
  text-align: right;
}

/* ── 3. App Layout ─────────────────────────────────── */
.app-container { position: relative; }

/* ── 4. Screens ────────────────────────────────────── */
.screen {
  display: none;
  min-height: 100vh;
  justify-content: center;
  align-items: flex-start;
  /* top padding = progress bar + breathing room */
  padding: calc(var(--bar-h) + 20px) 14px 44px;
}

/* Welcome screen — full bleed, dark navy hero */
.screen#screen-0 {
  padding: 0;
  align-items: stretch;
  background: var(--navy-dark);
  min-height: 100vh;
}

.screen.active {
  display: flex;
  animation: screenIn 0.3s ease both;
}

@keyframes screenIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.screen-content {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow);
}

/* ── 5. Welcome Screen ─────────────────────────────── */
.welcome-hero {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

.welcome-topbar {
  padding: 20px 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.welcome-logo {
  height: 40px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}

.welcome-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 40px 24px 48px;
  max-width: 620px;
  margin: 0 auto;
  width: 100%;
}

.welcome-badge {
  display: inline-block;
  background: rgba(23, 219, 251, 0.15);
  color: var(--cyan);
  border: 1px solid rgba(23, 219, 251, 0.4);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  padding: 5px 16px;
  margin-bottom: 28px;
}

.welcome-body h1 {
  font-size: 26px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.22;
  margin-bottom: 18px;
  letter-spacing: -0.3px;
}

.subheadline {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.65;
  margin-bottom: 40px;
  max-width: 420px;
}

.btn-welcome-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--cyan);
  color: var(--navy-dark);
  border: none;
  padding: 15px 32px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 800;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition), transform 0.12s, box-shadow var(--transition);
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 4px 28px rgba(23, 219, 251, 0.35);
  margin-bottom: 18px;
}

.btn-welcome-cta:hover {
  background: #00cde8;
  box-shadow: 0 6px 36px rgba(23, 219, 251, 0.55);
  transform: translateY(-2px);
}

.btn-welcome-cta:active { transform: scale(0.97); }

.welcome-meta {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.33);
  margin: 0;
  letter-spacing: 0.2px;
}

.welcome-footer {
  padding: 16px 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  flex-shrink: 0;
}

.welcome-footer p {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.28);
  letter-spacing: 0.3px;
  margin: 0;
}

/* ── 6. Step Label ─────────────────────────────────── */
.step-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--navy-mid);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

/* ── 7. Headings & Subtitles ───────────────────────── */
h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 4px;
}

.screen-subtitle {
  font-size: var(--text-base);
  color: var(--gray-600);
  margin-bottom: 18px;
}

/* ── 8. Option Cards (Radio) ───────────────────────── */
.options-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0 20px;
}

.option-card {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  user-select: none;
}

.option-card:hover {
  border-color: var(--accent);
  background: var(--accent-bg);
}

.option-card input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.option-card.selected,
.option-card:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-bg);
}

.option-text {
  font-size: var(--text-md);
  color: var(--gray-800);
  line-height: 1.4;
}

/* ── 9. Input Groups ───────────────────────────────── */
.input-group { margin-bottom: 16px; }

.input-label {
  display: block;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-700);
  line-height: 1.45;
  margin-bottom: 6px;
}

.industry-term { color: var(--navy-mid); font-weight: 700; }

.required-mark { color: var(--red); }
.optional-mark { color: var(--gray-500); font-weight: 400; font-size: var(--text-sm); }

/* Inputs */
.num-input,
.text-input {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: var(--text-md);
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.num-input:focus,
.text-input:focus {
  border-color: var(--highlight);
  box-shadow: 0 0 0 3px rgba(23, 219, 251, 0.15);
}

.num-input::placeholder,
.text-input::placeholder { color: var(--gray-400); }

/* Currency wrapper */
.currency-wrap { position: relative; display: flex; align-items: center; }

.currency-symbol {
  position: absolute;
  left: 12px;
  font-size: var(--text-md);
  color: var(--gray-500);
  pointer-events: none;
  z-index: 1;
}

.currency-wrap .num-input { padding-left: 26px; }

/* ── 10. Sliders ───────────────────────────────────── */
.slider-group { margin-bottom: 16px; }

.slider-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
}

.slider-cap {
  font-size: 10px;
  color: var(--gray-500);
  flex-shrink: 0;
  white-space: nowrap;
}

input[type="range"] {
  flex: 1;
  height: 5px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--gray-300);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--highlight);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(23, 219, 251, 0.4);
  transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--highlight);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 6px rgba(23, 219, 251, 0.4);
}

.slider-val {
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--navy-mid);
  margin-top: 4px;
}

/* ── 11. Notes ─────────────────────────────────────── */
.privacy-note {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: var(--text-sm);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin-bottom: 14px;
  line-height: 1.4;
  color: var(--gray-500);
  background: var(--gray-50);
  margin-top: 2px;
}

.privacy-note svg { flex-shrink: 0; }

.email-note {
  display: flex;
  align-items: center;
  gap: 14px;
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 14px;
  background: var(--navy-dark);
  border: 2px solid var(--cyan);
  color: var(--white);
}

.email-note svg {
  flex-shrink: 0;
  color: var(--cyan);
  width: 22px;
  height: 22px;
}

.email-note-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.email-note-text strong {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
}

.email-note-text span {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.4;
}

/* ── Slider hint ───────────────────────────────────── */
.slider-hint {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.5;
  margin-bottom: 6px;
  font-style: italic;
}

/* ── 12. Spinner & Utilities ───────────────────────── */
.btn-spinner {
  display: inline-block;
  width: 13px;
  height: 13px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-left: 6px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }

/* ── 13. Error Messages ────────────────────────────── */
.error-msg {
  color: var(--red);
  font-size: var(--text-sm);
  font-weight: 600;
  min-height: 16px;
  margin-bottom: 8px;
}

/* ── 14. Buttons ───────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  border: none;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: var(--text-md);
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: background var(--transition), transform 0.12s;
  -webkit-tap-highlight-color: transparent;
  line-height: 1.4;
}

.btn-primary:hover  { background: var(--accent-hover); }
.btn-primary:active { transform: scale(0.98); }

.btn-large {
  padding: 13px 32px;
  font-size: var(--text-lg);
}

.btn-secondary {
  display: inline-block;
  background: var(--white);
  color: var(--gray-700);
  border: 1.5px solid var(--gray-300);
  padding: 9px 20px;
  border-radius: var(--radius);
  font-size: var(--text-md);
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  line-height: 1.4;
}

.btn-secondary:hover { border-color: var(--gray-500); color: var(--gray-900); }

/* ── 15. Nav Buttons ───────────────────────────────── */
.nav-buttons {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  padding-top: 4px;
}

/* ── 16. Results Screen ────────────────────────────── */
.results-content {
  max-width: 720px;
  padding: 22px 20px 32px;
}

.results-header { margin-bottom: 20px; }

.results-logo { margin-bottom: 14px; }

.results-logo img {
  height: 28px;
  width: auto;
  display: block;
}

.results-header h1 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 4px;
}

.results-greeting {
  font-size: var(--text-base);
  color: var(--gray-600);
}

/* Result Cards */
.result-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 22px;
}

.result-card {
  background: var(--accent);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 16px 16px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.result-card-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.78;
  margin-bottom: 7px;
}

.result-card-value {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.15;
}

/* Breakdown */
.breakdown-section { margin-bottom: 18px; }

.breakdown-section h3 {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-base);
}

.breakdown-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-700);
}

.bd-val {
  text-align: right;
  font-weight: 600;
  color: var(--gray-900);
}

.bd-total-row td {
  border-bottom: none;
  border-top: 1.5px solid var(--primary);
  color: var(--primary);
  font-size: var(--text-md);
  padding-top: 10px;
}

/* Insight Box */
.insight-box {
  border-left: 3px solid var(--highlight);
  background: var(--cyan-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 12px 16px;
  margin-bottom: 20px;
}

.insight-box p {
  font-size: var(--text-md);
  color: var(--gray-700);
  line-height: 1.6;
  font-style: italic;
}

/* CTA Section */
.cta-section {
  background: var(--primary);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  margin-bottom: 16px;
}

.cta-section h2 {
  color: var(--white);
  font-size: 16px;
  margin-bottom: 8px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--text-base);
  line-height: 1.6;
  margin-bottom: 18px;
}

.btn-cta {
  display: inline-block;
  padding: 12px 28px;
  font-size: var(--text-md);
}

.linkedin-dm {
  color: rgba(255, 255, 255, 0.48);
  font-size: var(--text-sm);
  margin-top: 12px;
  margin-bottom: 0 !important;
}

/* Share */
.share-section { text-align: center; margin-bottom: 10px; }

.btn-share {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--linkedin);
  color: var(--white);
  border: none;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition);
}

.btn-share:hover { background: #005e8f; }

/* Print */
.print-section { text-align: center; margin-bottom: 16px; }

.btn-print {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  color: var(--navy-mid);
  border: 2px solid var(--navy-mid);
  padding: 11px 24px;
  border-radius: var(--radius);
  font-size: var(--text-md);
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 2px 8px rgba(48, 52, 129, 0.12);
}

.btn-print:hover {
  background: var(--navy-mid);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(48, 52, 129, 0.25);
  transform: translateY(-1px);
}

.btn-print:active { transform: scale(0.98); }

.results-back { justify-content: flex-start; }

/* ── 17. Toast ─────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(70px);
  background: var(--gray-900);
  color: var(--white);
  padding: 9px 20px;
  border-radius: 100px;
  font-size: var(--text-base);
  font-weight: 600;
  z-index: 1000;
  pointer-events: none;
  white-space: nowrap;
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast.show { transform: translateX(-50%) translateY(0); }

/* ── 18. Tablet (600px+) ───────────────────────────── */
@media (min-width: 600px) {
  .screen-content { padding: 32px 32px; }

  .welcome-body h1 { font-size: 32px; }
  .subheadline { font-size: 17px; }

  h2 { font-size: 20px; }

  .results-content { padding: 32px 36px 40px; }
  .results-header h1 { font-size: 19px; }
  .result-card-value { font-size: 21px; }

  .cta-section h2 { font-size: 17px; }
}

/* ── 19. Desktop (768px+) ──────────────────────────── */
@media (min-width: 768px) {
  .screen.active {
    padding-top: calc(var(--bar-h) + 32px);
    padding-bottom: 60px;
    align-items: center;
  }

  .screen#screen-0 { padding: 0; align-items: stretch; }

  /* 3-column result cards */
  .result-cards { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .result-card { padding: 18px 14px; }
  .result-card-value { font-size: 19px; }

  .results-content { padding: 36px 40px 44px; }
}

/* ── 20. Wide (1024px+) ────────────────────────────── */
@media (min-width: 1024px) {
  .welcome-body h1 { font-size: 40px; }
  .welcome-topbar { padding: 24px 48px; }
  .welcome-footer { padding: 20px 48px; }
  h2 { font-size: 21px; }

  .results-header h1 { font-size: 20px; }
  .result-card-value { font-size: 20px; }

  .screen-content { padding: 36px 40px; }
}

/* ── 21. Print ─────────────────────────────────────── */
@media print {
  .progress-container,
  .nav-buttons,
  .share-section,
  .print-section,
  .toast { display: none !important; }

  body { background: white; }
  .screen.active { padding: 0; min-height: unset; }

  .screen-content,
  .results-content {
    box-shadow: none;
    border: none;
    max-width: 100%;
    padding: 16px;
  }

  .results-logo img { height: 24px; }

  .result-cards { grid-template-columns: repeat(3, 1fr); }

  .result-card {
    background: white;
    border: 1.5px solid var(--navy-mid);
    box-shadow: none;
    padding: 12px;
  }

  .result-card-label,
  .result-card-value { color: var(--navy-mid) !important; }

  .cta-section {
    background: var(--gray-100) !important;
    border: 1px solid var(--gray-300);
  }

  .cta-section h2 { color: var(--primary) !important; }
  .cta-section p  { color: var(--gray-700) !important; }
  .linkedin-dm    { color: var(--gray-500) !important; }

  .btn-cta {
    background: white;
    color: var(--navy-mid);
    border: 1.5px solid var(--navy-mid);
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 10px;
    color: var(--gray-500);
  }
}