/**
 * ISI Consulting — Design System (Block 3A Section 1)
 * Hybrid consulting + premium SaaS tokens and .isi-* components.
 * Load on diagnostic pages after or instead of legacy site.css overrides.
 */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

/* -------------------------------------------------------------------------- */
/* Design tokens                                                              */
/* -------------------------------------------------------------------------- */
:root {
  /* Primary */
  --isi-blue: #003366;
  --isi-blue-deep: #002244;
  --isi-blue-mid: #004080;

  /* Accent */
  --isi-gold: #c9a86a;
  --isi-gold-hover: #d4b87c;

  /* Secondary */
  --isi-cyan: #0099cc;
  --isi-cyan-hover: #00aad9;

  /* Surfaces */
  --isi-bg: #f5f7fa;
  --isi-surface: #ffffff;
  --isi-white: #ffffff;
  --isi-border: #e0e6ed;
  --isi-text: #1a2332;
  --isi-text-muted: #5a6577;
  --isi-text-future: #9aa3b2;

  /* Ratings */
  --isi-green: #067647;
  --isi-green-bg: #ecfdf3;
  --isi-yellow: #b54708;
  --isi-yellow-bg: #fffaeb;
  --isi-red: #b42318;
  --isi-red-bg: #fef3f2;

  /* Layout */
  --isi-page-pad: 40px;
  --isi-section-gap: 32px;
  --isi-card-pad: 24px;
  --isi-radius: 8px;
  --isi-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --isi-max: 1120px;
  --isi-font: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* -------------------------------------------------------------------------- */
/* Base                                                                       */
/* -------------------------------------------------------------------------- */
.isi-app,
.isi-page,
body.isi-diagnostic {
  font-family: var(--isi-font);
  color: var(--isi-text);
  background: var(--isi-bg);
  -webkit-font-smoothing: antialiased;
}

body.isi-diagnostic {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
}

.isi-page {
  width: min(100% - 2.5rem, var(--isi-max));
  margin-inline: auto;
  padding: var(--isi-page-pad) 0;
}

.isi-page > h1,
.isi-page > h2 {
  font-weight: 600;
  color: var(--isi-blue);
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

.isi-page > h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
}

.isi-section {
  margin-bottom: var(--isi-section-gap);
}

.isi-section:last-child {
  margin-bottom: 0;
}

/* -------------------------------------------------------------------------- */
/* Diagnostic shell header (branded)                                          */
/* -------------------------------------------------------------------------- */
.isi-diag-header {
  background: var(--isi-blue);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.isi-diag-header-inner {
  width: min(100% - 2.5rem, var(--isi-max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.85rem 0;
}

.isi-diag-brand {
  font-weight: 600;
  font-size: 1.05rem;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.isi-diag-brand span {
  color: var(--isi-gold);
  font-weight: 500;
}

.isi-diag-brand:hover {
  color: #fff;
}

/* -------------------------------------------------------------------------- */
/* Branded page header (Block 3B Section 2)                                   */
/* -------------------------------------------------------------------------- */
.isi-header-root {
  width: 100%;
}

.isi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  background: var(--isi-blue);
  color: var(--isi-white);
  padding: 16px 40px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.isi-header-left {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.isi-header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  text-align: right;
}

.isi-header-title {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--isi-white);
}

.isi-header-subtitle {
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--isi-gold);
}

.isi-header-tagline {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.01em;
}

@media (max-width: 720px) {
  .isi-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 20px;
  }

  .isi-header-right {
    text-align: left;
    justify-content: flex-start;
  }
}

/* -------------------------------------------------------------------------- */
/* Navigation — icons + labels + gold progress                                */
/* -------------------------------------------------------------------------- */
.isi-diag-nav {
  background: var(--isi-surface);
  border-bottom: 1px solid var(--isi-border);
  position: sticky;
  top: 0;
  z-index: 90;
}

.isi-diag-nav-inner {
  width: min(100% - 1.5rem, var(--isi-max));
  margin-inline: auto;
  display: flex;
  align-items: stretch;
  gap: 0.15rem;
  overflow-x: auto;
  padding: 0.35rem 0 0;
  -webkit-overflow-scrolling: touch;
}

.isi-nav-step {
  flex: 1 1 auto;
  min-width: 5.5rem;
  text-align: center;
  text-decoration: none;
  color: var(--isi-text-future);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.55rem 0.4rem 0.65rem;
  position: relative;
  border-bottom: 3px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.isi-nav-step .isi-nav-icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  margin: 0 auto 0.3rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.isi-nav-step .isi-nav-label {
  display: block;
  line-height: 1.2;
}

/* Future */
.isi-nav-step.is-future {
  color: var(--isi-text-future);
  font-weight: 400;
}

/* Completed */
.isi-nav-step.is-complete {
  color: var(--isi-blue);
  font-weight: 500;
}

.isi-nav-step.is-complete .isi-nav-check {
  display: inline-block;
  width: 0.85rem;
  height: 0.85rem;
  margin-left: 0.2rem;
  vertical-align: -0.05rem;
}

.isi-nav-step .isi-nav-check {
  display: none;
}

.isi-nav-step.is-complete .isi-nav-check {
  display: inline-block;
}

/* Active — gold underline + bold */
.isi-nav-step.is-active {
  color: var(--isi-blue);
  font-weight: 700;
  border-bottom-color: var(--isi-gold);
}

.isi-nav-step.is-active .isi-nav-icon {
  stroke: var(--isi-gold);
}

.isi-nav-step:hover {
  color: var(--isi-blue-mid);
}

/* Progress track under nav (optional continuous bar) */
.isi-diag-progress {
  height: 3px;
  background: var(--isi-border);
  width: min(100% - 1.5rem, var(--isi-max));
  margin: 0 auto;
  border-radius: 2px;
  overflow: hidden;
}

.isi-diag-progress-bar {
  height: 100%;
  background: var(--isi-gold);
  border-radius: 2px;
  transition: width 0.25s ease;
}

/* -------------------------------------------------------------------------- */
/* Cards                                                                      */
/* -------------------------------------------------------------------------- */
.isi-card {
  background: var(--isi-surface);
  border: 1px solid var(--isi-border);
  border-radius: var(--isi-radius);
  padding: var(--isi-card-pad);
  margin-bottom: 1rem;
  box-shadow: var(--isi-shadow);
}

.isi-card h3 {
  margin: 0 0 0.65rem;
  color: var(--isi-blue);
  font-size: 1.05rem;
  font-weight: 600;
}

.isi-card p {
  margin: 0.3rem 0;
  color: var(--isi-text-muted);
  font-size: 0.95rem;
  font-weight: 400;
}

.isi-card ul {
  margin: 0.5rem 0 0;
  padding-left: 1.15rem;
  color: var(--isi-text-muted);
}

.isi-card li {
  margin-bottom: 0.3rem;
}

/* -------------------------------------------------------------------------- */
/* Buttons                                                                    */
/* -------------------------------------------------------------------------- */
.isi-button,
.btn.isi-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--isi-font);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--isi-radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

/* Primary — deep consulting blue */
.isi-button,
.isi-button-primary,
.btn-primary.isi-button {
  background: var(--isi-blue);
  color: #fff;
  border-color: var(--isi-blue);
}

.isi-button:hover,
.isi-button-primary:hover,
.btn-primary.isi-button:hover {
  background: var(--isi-blue-mid);
  border-color: var(--isi-blue-mid);
  color: #fff;
}

/* Secondary — cyan */
.isi-button-secondary,
.btn-secondary.isi-button {
  background: var(--isi-cyan);
  color: #fff;
  border-color: var(--isi-cyan);
}

.isi-button-secondary:hover,
.btn-secondary.isi-button:hover {
  background: var(--isi-cyan-hover);
  border-color: var(--isi-cyan-hover);
  color: #fff;
}

/* Accent — gold (sparingly) */
.isi-button-accent {
  background: var(--isi-gold);
  color: var(--isi-blue-deep);
  border-color: var(--isi-gold);
  font-weight: 600;
}

.isi-button-accent:hover {
  background: var(--isi-gold-hover);
  border-color: var(--isi-gold-hover);
  color: var(--isi-blue-deep);
}

.isi-button-outline {
  background: transparent;
  color: var(--isi-blue);
  border-color: var(--isi-blue);
}

.isi-button-outline:hover {
  background: rgba(0, 51, 102, 0.06);
}

.isi-priority-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin: 1.25rem 0 var(--isi-section-gap);
}

/* -------------------------------------------------------------------------- */
/* Forms (diagnostic / isi-form)                                              */
/* -------------------------------------------------------------------------- */
.isi-form {
  max-width: 720px;
}

.isi-label,
.isi-form label,
.isi-form .form-group > label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--isi-blue);
  margin-bottom: 0.35rem;
}

.isi-input,
.isi-form input,
.isi-form select,
.isi-form textarea,
.isi-form .form-group input,
.isi-form .form-group select,
.isi-form .form-group textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--isi-border);
  border-radius: var(--isi-radius);
  font: inherit;
  color: var(--isi-text);
  background: var(--isi-surface);
}

.isi-input:focus,
.isi-form input:focus,
.isi-form select:focus,
.isi-form textarea:focus {
  outline: 2px solid var(--isi-cyan);
  outline-offset: 1px;
  border-color: var(--isi-cyan);
}

.isi-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
}

@media (max-width: 700px) {
  .isi-form-grid {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------------------------------------------- */
/* Ratings                                                                    */
/* -------------------------------------------------------------------------- */
.rating-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.rating-green {
  background: var(--isi-green-bg);
  color: var(--isi-green);
}

.rating-yellow {
  background: var(--isi-yellow-bg);
  color: var(--isi-yellow);
}

.rating-red {
  background: var(--isi-red-bg);
  color: var(--isi-red);
}

/* -------------------------------------------------------------------------- */
/* Archetype / root cause                                                     */
/* -------------------------------------------------------------------------- */
.isi-archetype-summary {
  color: var(--isi-blue);
  font-size: 1.05rem;
}

.isi-root-cause h4,
.isi-archetype-ratings h4 {
  color: var(--isi-blue);
  font-weight: 600;
  margin: 0 0 0.5rem;
}

/* -------------------------------------------------------------------------- */
/* Footer (diagnostic)                                                        */
/* -------------------------------------------------------------------------- */
.isi-diag-footer {
  background: var(--isi-blue-deep);
  color: rgba(255, 255, 255, 0.7);
  padding: 2rem 0 1.5rem;
  font-size: 0.88rem;
  margin-top: 2rem;
}

.isi-diag-footer a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
}

.isi-diag-footer a:hover {
  color: var(--isi-gold);
}

.isi-diag-footer-inner {
  width: min(100% - 2.5rem, var(--isi-max));
  margin-inline: auto;
}

/* -------------------------------------------------------------------------- */
/* Page header band                                                           */
/* -------------------------------------------------------------------------- */
.isi-page-header {
  background: linear-gradient(145deg, var(--isi-blue-deep) 0%, var(--isi-blue) 60%, var(--isi-blue-mid) 100%);
  color: #fff;
  padding: 2.25rem 0 2rem;
  margin-bottom: 0;
}

.isi-page-header h1 {
  margin: 0 0 0.5rem;
  font-weight: 600;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: #fff;
}

.isi-page-header .lede {
  margin: 0;
  color: rgba(255, 255, 255, 0.85);
  max-width: 52ch;
  font-weight: 400;
}

.isi-page-header .container {
  width: min(100% - 2.5rem, var(--isi-max));
  margin-inline: auto;
}

/* -------------------------------------------------------------------------- */
/* Utilities                                                                  */
/* -------------------------------------------------------------------------- */
.isi-muted {
  color: var(--isi-text-muted);
}

.isi-disabled-link {
  opacity: 0.55;
  pointer-events: none;
}

@media (max-width: 800px) {
  :root {
    --isi-page-pad: 28px;
    --isi-section-gap: 24px;
    --isi-card-pad: 20px;
  }

  .isi-nav-step {
    min-width: 4.5rem;
    font-size: 0.65rem;
  }
}

/* Print-friendly baseline (export hooks come in 3B) */
@media print {
  .isi-diag-nav,
  .isi-priority-actions,
  .isi-button {
    display: none !important;
  }

  .isi-card {
    box-shadow: none;
    break-inside: avoid;
  }
}

/* -------------------------------------------------------------------------- */
/* Block 3A Section 2 — .isi-nav component (isiNav.html)                      */
/* -------------------------------------------------------------------------- */
.isi-nav-root {
  position: sticky;
  top: 0;
  z-index: 200;
}

.isi-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  background: var(--isi-blue);
  color: #fff;
  padding: 0.75rem 1.25rem;
  width: 100%;
  box-sizing: border-box;
}

.isi-nav-title {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: #fff;
  white-space: nowrap;
}

.isi-nav-title::after {
  content: "";
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  margin-left: 0.45rem;
  border-radius: 50%;
  background: var(--isi-gold);
  vertical-align: 0.1rem;
}

.isi-nav-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.15rem;
  flex: 1 1 auto;
  justify-content: flex-end;
}

.isi-nav .isi-nav-step {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  min-width: 4.75rem;
  padding: 0.4rem 0.45rem 0.5rem;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.68rem;
  font-weight: 500;
  border-bottom: 3px solid transparent;
  border-radius: 4px 4px 0 0;
  background: transparent;
  cursor: pointer;
  line-height: 1.15;
  text-align: center;
}

.isi-nav .isi-nav-emoji {
  font-size: 1rem;
  line-height: 1;
}

.isi-nav .isi-nav-step-future {
  color: rgba(255, 255, 255, 0.45);
  font-weight: 400;
}

.isi-nav .isi-nav-step-complete {
  color: rgba(255, 255, 255, 0.92);
  font-weight: 500;
}

.isi-nav .isi-nav-step-complete::after {
  content: " ✓";
  color: var(--isi-gold);
  font-size: 0.65rem;
}

.isi-nav .isi-nav-step-active {
  color: #fff;
  font-weight: 700;
  border-bottom-color: var(--isi-gold);
}

.isi-nav .isi-nav-step:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.isi-progress {
  height: 4px;
  background: var(--isi-border);
  width: 100%;
}

.isi-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--isi-gold);
  transition: width 0.25s ease;
}

@media (max-width: 900px) {
  .isi-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .isi-nav-steps {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
  }

  .isi-nav .isi-nav-step {
    min-width: 4.25rem;
  }
}

/* -------------------------------------------------------------------------- */
/* Diagnostic page polish (Block 3A Section 3)                                */
/* -------------------------------------------------------------------------- */
body.isi-diagnostic {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.isi-diagnostic .isi-page {
  flex: 1 0 auto;
}

.isi-button-secondary,
.isi-button-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--isi-font);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--isi-radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.isi-footer {
  text-align: center;
  padding: 24px;
  margin-top: 40px;
  font-size: 14px;
  color: #555;
  line-height: 1.4;
  white-space: pre-line; /* or use <br> in HTML */
}

/* -------------------------------------------------------------------------- */
/* Production form utilities (Block 4D — no site.css dependency)              */
/* -------------------------------------------------------------------------- */
.form-block {
  background: var(--isi-surface, #fff);
  border: 1px solid var(--isi-border, #d0d7de);
  border-radius: var(--isi-radius, 8px);
  padding: 2rem;
  box-shadow: 0 1px 3px rgba(11, 31, 58, 0.08);
  max-width: 560px;
}

.form-block.form-block-xl {
  max-width: 860px;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group .error {
  color: #b42318;
  font-size: 0.85rem;
  margin-top: 0.3rem;
  display: none;
}

.form-group.has-error .error {
  display: block;
}

.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select,
.form-group.has-error .isi-input {
  border-color: #b42318;
}

.form-success {
  display: none;
  background: #ecfdf3;
  border: 1px solid #abefc6;
  color: #067647;
  padding: 1rem 1.15rem;
  border-radius: var(--isi-radius, 8px);
  margin-bottom: 1rem;
  font-weight: 500;
}

.form-success.is-visible {
  display: block;
}

.isi-form-grid .form-group-span,
.isi-form-grid .span-2 {
  grid-column: 1 / -1;
}

.isi-form .form-soft-warn {
  display: block;
  background: #fffbeb;
  border: 1px solid #fcd34d;
  color: #92400e;
  padding: 0.85rem 1.05rem;
  border-radius: var(--isi-radius, 8px);
  margin-bottom: 1.15rem;
  font-weight: 500;
  font-size: 0.92rem;
}

.isi-form .form-soft-warn[hidden] {
  display: none;
}

.scoring-hint {
  background: #fffbeb;
  border: 1px solid #fcd34d;
  color: #92400e;
  padding: 0.85rem 1.05rem;
  border-radius: var(--isi-radius, 8px);
  margin: 1rem 0 0;
  font-weight: 500;
  font-size: 0.92rem;
}

.scoring-hint[hidden] {
  display: none;
}

/* ========================================================================== */
/* Block 4E — Final Polish                                                    */
/* ========================================================================== */

body.isi-diagnostic {
  line-height: 1.65;
}

.isi-page > h2 {
  margin: 0 0 1.25rem;
  padding: 0;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.isi-page > h3,
.isi-section > h3 {
  margin: 1.5rem 0 0.85rem;
  color: var(--isi-blue);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
}

.isi-page > h3:first-of-type,
.isi-section > h3:first-child {
  margin-top: 0;
}

.isi-section {
  margin-bottom: var(--isi-section-gap);
}

.isi-section p {
  margin: 0 0 1rem;
  line-height: 1.65;
}

.isi-card {
  border-radius: var(--isi-radius);
  border: 1px solid var(--isi-border);
  box-shadow: var(--isi-shadow);
  padding: var(--isi-card-pad);
  margin-bottom: 1rem;
  transition: box-shadow 0.2s ease;
}

.isi-card:last-child {
  margin-bottom: 0;
}

.isi-priority-actions {
  gap: 0.75rem;
  margin: 1.25rem 0 1.5rem;
}

.isi-button,
.isi-button-primary,
.isi-button-secondary,
.isi-button-accent,
.isi-button-outline,
.btn.isi-button {
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    box-shadow 0.18s ease,
    transform 0.18s ease;
}

.isi-button:hover,
.isi-button-primary:hover,
.btn-primary.isi-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 51, 102, 0.22);
}

.isi-button-secondary:hover,
.btn-secondary.isi-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 153, 204, 0.28);
}

.isi-button-accent:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(201, 168, 106, 0.4);
}

.isi-button:active,
.isi-button-secondary:active,
.isi-button-accent:active {
  transform: translateY(0);
  box-shadow: none;
}

.isi-progress {
  height: 4px;
  background: var(--isi-border);
  width: 100%;
  margin: 0;
  padding: 0;
  display: block;
}

.isi-progress-fill {
  transition: width 0.3s ease;
}

.isi-nav-root {
  margin: 0;
  padding: 0;
}

.isi-footer {
  text-align: center;
  padding: 28px 20px;
  margin-top: 48px;
  font-size: 14px;
  color: #555;
  line-height: 1.5;
  border-top: 1px solid var(--isi-border);
  background: transparent;
}

/* Dev console + automation visual alignment */
.isi-card .isi-button-secondary {
  margin-top: 0.35rem;
}