/* MDRS Calculator stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700&display=swap');

* { box-sizing: border-box; }

:root {
  --bg: #f5f6f8;
  --bg-alt: #eef0f3;
  --bg-section: #ffffff;
  --text: #1a1a1a;
  --text-muted: #5a6470;
  --border: #e0e3e8;
  --primary: #1a3a6b;
  --primary-light: #2c5599;
  --accent: #1565c0;
  --critical: #d32f2f;
  --high: #ed6c02;
  --medium: #f9a825;
  --low: #2e7d32;
  --warning-bg: #fff4e0;
  --warning-border: #ed6c02;
}

body {
  font-family: 'Open Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  background: var(--primary);
  color: #ffffff;
  padding: 24px 0 20px;
  margin-bottom: 32px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.06);
}

header h1 {
  margin: 0 0 4px;
  font-family: 'Open Sans', 'Segoe UI', sans-serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.005em;
}

header .subtitle {
  margin: 0 0 16px;
  font-size: 14px;
  opacity: 0.88;
  font-weight: 400;
}

header nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.18);
}

header nav a {
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s;
}

header nav a:hover {
  border-bottom-color: #ffffff;
}

main {
  padding-bottom: 64px;
}

section {
  margin-bottom: 32px;
}

h2 {
  font-family: 'Open Sans', 'Segoe UI', sans-serif;
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--primary);
}

h3 {
  font-family: 'Open Sans', 'Segoe UI', sans-serif;
  font-size: 17px;
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--primary);
}

h4 { font-family: 'Open Sans', 'Segoe UI', sans-serif; font-size: 15px; font-weight: 600; margin: 14px 0 8px; color: var(--text); }

p { margin: 0 0 12px; }

ul, ol { margin: 0 0 16px; padding-left: 24px; }

li { margin-bottom: 4px; }

a {
  color: var(--primary-light);
  text-decoration: underline;
}

a:hover { color: var(--primary); }

code {
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  background: var(--bg-alt);
  padding: 2px 6px;
  border-radius: 3px;
}

pre {
  background: var(--bg-alt);
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

pre.equation {
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 15px;
  text-align: center;
  padding: 20px;
}

/* Calculator grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

.dimension {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.dimension label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
}

.dimension .weight {
  font-weight: 400;
  font-size: 12px;
  color: var(--text-muted);
}

.dimension input[type="range"] {
  width: 100%;
  margin-bottom: 8px;
}

.dimension output {
  display: inline-block;
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.dimension .help {
  font-size: 12px;
  color: var(--text-muted);
  margin: 4px 0 0;
  min-height: 32px;
}

/* Result card */
.result-card {
  background: linear-gradient(135deg, #f7f9fc 0%, #eef2f7 100%);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  margin: 32px 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: start;
}

.result-card.tier-CRITICAL { border-color: var(--critical); }
.result-card.tier-HIGH { border-color: var(--high); }
.result-card.tier-MEDIUM { border-color: var(--medium); }
.result-card.tier-LOW { border-color: var(--low); }

.result-tier {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 1.5px;
  padding: 16px 28px;
  border-radius: 8px;
  text-align: center;
  color: white;
  white-space: nowrap;
  align-self: start;
}

.result-card.tier-CRITICAL .result-tier { background: var(--critical); }
.result-card.tier-HIGH .result-tier { background: var(--high); }
.result-card.tier-MEDIUM .result-tier { background: var(--medium); color: #333; }
.result-card.tier-LOW .result-tier { background: var(--low); }

.result-composite {
  display: block;
  margin-bottom: 16px;
}

.result-composite .label {
  display: block;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.result-composite .value {
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
}

.result-explain {
  grid-column: 1 / -1;
  margin-top: 8px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.result-explain h3 {
  margin-top: 0;
  font-size: 15px;
}

.result-explain ul {
  font-size: 14px;
}

.result-explain li {
  margin-bottom: 6px;
}

.result-explain .applied { color: var(--primary); font-weight: 600; }
.result-explain .not-applied { color: var(--text-muted); }

.result-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

button {
  background: var(--primary-light);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}

button:hover {
  background: var(--primary);
}

button:focus {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

.result-action-tier {
  background: var(--bg-section);
  border-left: 4px solid var(--primary-light);
  padding: 16px 20px;
  border-radius: 0 6px 6px 0;
}

.result-action-tier h3 {
  margin-top: 0;
  font-size: 16px;
}

.result-action-tier .timeline {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-muted);
}

/* Presets */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.preset {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  transition: border-color 0.15s, transform 0.15s;
}

.preset:hover {
  border-color: var(--primary-light);
  background: white;
  transform: translateY(-2px);
}

.preset h3 {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 16px;
}

.preset p {
  font-size: 13px;
  margin: 0 0 6px;
  color: var(--text-muted);
}

.preset .expected {
  margin-top: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
}

/* Weights section */
.weights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.weight-input {
  background: var(--bg-section);
  padding: 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.weight-input label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.weight-input input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
}

.weight-input button {
  width: 100%;
  margin-top: 14px;
  padding: 6px;
}

.warning {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  padding: 12px 16px;
  border-radius: 6px;
  color: var(--warning-border);
  font-size: 14px;
}

.warning.hidden { display: none; }

/* Methodology table */
.tier-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}

.tier-table th, .tier-table td {
  padding: 10px 12px;
  text-align: left;
  border: 1px solid var(--border);
  font-size: 14px;
}

.tier-table th {
  background: var(--primary);
  color: white;
  font-weight: 600;
}

.tier-table tbody tr:nth-child(even) {
  background: var(--bg-alt);
}

footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}

footer .disclaimer {
  font-style: italic;
  margin-top: 8px;
}

/* ─────────── Intro / How-to-use section ─────────── */
.intro-section {
  background: linear-gradient(180deg, var(--bg-section) 0%, var(--bg) 100%);
  padding: 28px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 20px;
}

.intro-grid h3 {
  margin-top: 0;
  font-size: 17px;
}

.intro-grid p {
  font-size: 14px;
  line-height: 1.6;
}

.workflow {
  font-size: 14px;
  padding-left: 20px;
}

.workflow li {
  margin-bottom: 8px;
}

.workflow li strong {
  color: var(--primary);
}

.workflow em {
  color: var(--high);
  font-weight: 600;
  font-style: normal;
  background: rgba(237, 125, 49, 0.12);
  padding: 1px 6px;
  border-radius: 3px;
}

.callout {
  background: #fff8e6;
  border-left: 4px solid var(--high);
  padding: 14px 18px;
  border-radius: 0 6px 6px 0;
  font-size: 14px;
}

@media (max-width: 800px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ─────────── Mode toggle ─────────── */
.mode-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0 24px;
}

.mode-btn {
  background: white;
  color: var(--text);
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 14px 18px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.15s, background 0.15s;
}

.mode-btn:hover {
  border-color: var(--primary-light);
  background: var(--bg-section);
}

.mode-btn.active {
  border-color: var(--primary);
  background: var(--primary);
  color: white;
}

.mode-btn .mode-label {
  font-size: 16px;
  font-weight: 600;
}

.mode-btn .mode-help {
  font-size: 13px;
  opacity: 0.85;
}

.mode-panel {
  display: none;
}

.mode-panel.active {
  display: block;
}

.mode-intro {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

@media (max-width: 600px) {
  .mode-toggle {
    grid-template-columns: 1fr;
  }
}

/* ─────────── Guided-mode questions ─────────── */
.question {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  margin-bottom: 16px;
}

.question h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--primary);
}

.question-prompt {
  font-size: 14px;
  margin-bottom: 4px;
}

.question-help {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

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

.options label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
  padding: 10px 12px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.1s, background 0.1s;
}

.options label:hover {
  border-color: var(--primary-light);
  background: #f9fbfd;
}

.options label:has(input:checked) {
  border-color: var(--primary);
  background: #eaf1f9;
}

.options input[type="radio"] {
  margin-top: 3px;
  grid-column: 1;
  grid-row: 1 / 3;
}

.options .opt-title {
  font-weight: 600;
  font-size: 14px;
}

.options .opt-desc {
  font-size: 13px;
  color: var(--text-muted);
}

/* ─────────── Direct-mode rubric expandable ─────────── */
.rubric {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.rubric summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  user-select: none;
}

.rubric summary:hover {
  color: var(--primary);
}

.rubric ul {
  margin-top: 10px;
  padding-left: 20px;
  font-size: 13px;
}

.rubric ul li {
  margin-bottom: 4px;
}

.rubric-note {
  font-size: 13px;
  margin-top: 10px;
  padding: 8px 10px;
  background: rgba(31, 56, 100, 0.06);
  border-radius: 4px;
}

/* ─────────── Result enhancements: scores table and next steps ─────────── */
.result-scores {
  grid-column: 1 / -1;
  margin-top: 8px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.result-scores h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.score-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.score-table th, .score-table td {
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.score-table th {
  background: var(--bg-alt);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.score-table td:nth-child(2) {
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-weight: 700;
  color: var(--primary);
  width: 80px;
}

.score-table td:nth-child(3) {
  color: var(--text-muted);
  width: 120px;
}

.next-steps {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-left: 4px solid var(--low);
  padding: 18px 22px;
  border-radius: 0 8px 8px 0;
  margin-top: 16px;
}

.next-steps h3 {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 17px;
}

.next-steps ol {
  margin: 0;
  padding-left: 22px;
  font-size: 14px;
}

.next-steps li {
  margin-bottom: 8px;
  line-height: 1.55;
}

.next-steps strong {
  color: var(--primary-light);
}

@media (max-width: 600px) {
  .result-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .result-tier {
    justify-self: center;
  }
}