/* ===================================================================
   ClinicalDesk — Clinical Decision Support
   =================================================================== */

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
img, svg { display: block; }
button, input, select, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }

/* ===== VARIABLES ===== */
:root {
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: #dbeafe;
  --primary-text: #1e3a8a;

  --success: #16a34a;
  --success-bg: #f0fdf4;
  --success-border: #86efac;
  --success-text: #14532d;

  --warning: #d97706;
  --warning-bg: #fffbeb;
  --warning-border: #fcd34d;
  --warning-text: #78350f;

  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --danger-border: #fca5a5;
  --danger-text: #7f1d1d;

  --info: #0284c7;
  --info-bg: #f0f9ff;
  --info-border: #7dd3fc;
  --info-text: #0c4a6e;

  --neutral-bg: #f8fafc;
  --neutral-border: #e2e8f0;
  --neutral-text: #475569;

  --text: #0f172a;
  --text-2: #334155;
  --text-3: #64748b;
  --text-4: #94a3b8;

  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --border-focus: #93c5fd;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);

  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 14px;

  --header-h: 64px;
  --container: 1180px;

  /* Category colors */
  --cat-cardiology: #dc2626;
  --cat-nephrology: #2563eb;
  --cat-hepatology: #d97706;
  --cat-pulmonology: #0891b2;
  --cat-psychiatry: #7c3aed;
  --cat-rheumatology: #16a34a;
  --cat-oncology: #db2777;
  --cat-neurology: #ea580c;
  --cat-endocrinology: #0d9488;
  --cat-general: #475569;
}

/* ===== BODY ===== */
body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.brand-mark svg { width: 36px; height: 36px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 1.125rem; font-weight: 700; color: var(--primary); letter-spacing: -0.02em; }
.brand-tagline { font-size: 0.65rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; }

.nav { display: flex; align-items: center; gap: 0.25rem; margin-left: auto; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-3);
  transition: all 0.15s;
  white-space: nowrap;
}
.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--primary-light); color: var(--primary); }
.nav-item--admin { color: var(--text-4); }
.nav-item--admin:hover { background: #f8fafc; color: var(--text-3); }
.nav-icon { width: 16px; height: 16px; flex-shrink: 0; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
}
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-2); border-radius: 2px; transition: all 0.2s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== MAIN ===== */
#app { flex: 1; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }

/* ===== PAGE LAYOUT ===== */
.page { padding: 2rem 0 3rem; }
.page-header { margin-bottom: 1.75rem; }
.page-title { font-size: 1.75rem; font-weight: 700; color: var(--text); letter-spacing: -0.025em; }
.page-subtitle { font-size: 0.9375rem; color: var(--text-3); margin-top: 0.25rem; }

/* ===== SEARCH BAR ===== */
.search-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.search-wrap {
  flex: 1;
  position: relative;
}
.search-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 18px;
  color: var(--text-4);
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: 0.625rem 1rem 0.625rem 2.75rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.9375rem;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.1);
}
.filter-select {
  padding: 0.625rem 2rem 0.625rem 0.875rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.875rem;
  color: var(--text-2);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2394a3b8'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 18px;
  min-width: 160px;
}
.filter-select:focus { outline: none; border-color: var(--primary); }

/* ===== CARDS GRID ===== */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.375rem;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--border-focus); }
.card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.5rem; }
.card-title { font-size: 1rem; font-weight: 600; color: var(--text); line-height: 1.4; }
.card-meta { font-size: 0.8125rem; color: var(--text-3); }
.card-desc { font-size: 0.875rem; color: var(--text-2); line-height: 1.5; -webkit-line-clamp: 2; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; }
.card-footer { display: flex; align-items: center; gap: 0.5rem; margin-top: auto; padding-top: 0.5rem; flex-wrap: wrap; }

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}
.badge-success { background: var(--success-bg); color: var(--success-text); }
.badge-warning { background: var(--warning-bg); color: var(--warning-text); }
.badge-danger { background: var(--danger-bg); color: var(--danger-text); }
.badge-info { background: var(--info-bg); color: var(--info-text); }
.badge-neutral { background: var(--neutral-bg); color: var(--neutral-text); border: 1px solid var(--border); }
.badge-primary { background: var(--primary-light); color: var(--primary-text); }

/* Category badges */
.cat-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}
.cat-Cardiology { background: var(--cat-cardiology); }
.cat-Nephrology { background: var(--cat-nephrology); }
.cat-Hepatology { background: var(--cat-hepatology); }
.cat-Pulmonology { background: var(--cat-pulmonology); }
.cat-Psychiatry { background: var(--cat-psychiatry); }
.cat-Rheumatology { background: var(--cat-rheumatology); }
.cat-Oncology { background: var(--cat-oncology); }
.cat-Neurology { background: var(--cat-neurology); }
.cat-Endocrinology, .cat-Metabolism { background: var(--cat-endocrinology); }
.cat-General, .cat-Gastroenterology, .cat-Hematology, .cat-InfectiousDiseases, .cat-Obstetrics { background: var(--cat-general); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-secondary { background: var(--surface); color: var(--text-2); border-color: var(--border); }
.btn-secondary:hover:not(:disabled) { background: var(--bg); border-color: var(--border-focus); }
.btn-danger { background: var(--danger-bg); color: var(--danger); border-color: var(--danger-border); }
.btn-danger:hover:not(:disabled) { background: var(--danger); color: white; }
.btn-ghost { background: transparent; color: var(--text-3); border-color: transparent; }
.btn-ghost:hover:not(:disabled) { background: var(--bg); color: var(--text-2); }
.btn-sm { padding: 0.375rem 0.875rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.75rem 1.75rem; font-size: 1rem; }
.btn-icon { width: 36px; height: 36px; padding: 0; justify-content: center; }

/* ===== FORMS ===== */
.form-section { margin-bottom: 2rem; }
.form-section-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.form-row { display: grid; gap: 1rem; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

.field-group { display: flex; flex-direction: column; gap: 0.375rem; }
.field-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.field-unit { font-size: 0.8125rem; font-weight: 400; color: var(--text-3); }
.field-hint { font-size: 0.8rem; color: var(--text-4); }
.field-req { color: var(--danger); }

.input, .select, .textarea {
  padding: 0.625rem 0.875rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9375rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.1);
}
.input::placeholder { color: var(--text-4); }
.select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2394a3b8'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; background-size: 16px; padding-right: 2.5rem; }
.textarea { resize: vertical; min-height: 100px; }

/* Checkbox */
.checkbox-group { display: flex; flex-direction: column; gap: 0.5rem; }
.checkbox-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0.875rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
}
.checkbox-item:hover { background: var(--primary-light); border-color: var(--border-focus); }
.checkbox-item input[type="checkbox"] { margin-top: 2px; width: 16px; height: 16px; accent-color: var(--primary); flex-shrink: 0; }
.checkbox-item-label { font-size: 0.875rem; color: var(--text-2); line-height: 1.4; }
.checkbox-item-points { margin-left: auto; font-size: 0.8rem; font-weight: 600; color: var(--primary); white-space: nowrap; flex-shrink: 0; }

/* Questionnaire */
.questionnaire { display: flex; flex-direction: column; gap: 0.75rem; }
.q-instructions { font-size: 0.875rem; color: var(--text-2); background: var(--info-bg); border: 1px solid var(--info-border); border-radius: var(--radius-sm); padding: 0.75rem 1rem; margin-bottom: 0.5rem; }
.q-item { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.875rem 1rem; }
.q-item-num { font-size: 0.75rem; font-weight: 600; color: var(--text-4); margin-bottom: 0.25rem; }
.q-item-text { font-size: 0.875rem; color: var(--text-2); margin-bottom: 0.625rem; line-height: 1.4; }
.q-options { display: flex; gap: 0.375rem; flex-wrap: wrap; }
.q-option { display: flex; flex-direction: column; align-items: center; gap: 0.25rem; flex: 1; min-width: 64px; }
.q-option input[type="radio"] { accent-color: var(--primary); }
.q-option-label { font-size: 0.72rem; text-align: center; color: var(--text-3); line-height: 1.2; }

/* Scale select fallback */
.scale-select-row { display: flex; align-items: center; gap: 0.75rem; }
.scale-select-num { font-size: 0.8125rem; color: var(--text-3); min-width: 20px; font-weight: 600; }

/* ===== CALC LAYOUT ===== */
.calc-layout { display: grid; grid-template-columns: 1fr 380px; gap: 2rem; align-items: start; }
.calc-form-card, .calc-result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.calc-form-head, .calc-result-head {
  padding: 1.125rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.calc-form-head h2, .calc-result-head h2 { font-size: 1rem; font-weight: 600; color: var(--text); }
.calc-form-body, .calc-result-body { padding: 1.5rem; }
.calc-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }
.calc-actions .btn-primary { flex: 1; justify-content: center; }

/* Result display */
.result-placeholder {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-4);
}
.result-placeholder svg { width: 48px; height: 48px; margin: 0 auto 0.75rem; opacity: 0.3; }
.result-score-box {
  text-align: center;
  padding: 1.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}
.result-score-box.success { background: var(--success-bg); border: 2px solid var(--success-border); }
.result-score-box.warning { background: var(--warning-bg); border: 2px solid var(--warning-border); }
.result-score-box.danger { background: var(--danger-bg); border: 2px solid var(--danger-border); }
.result-score-box.info { background: var(--info-bg); border: 2px solid var(--info-border); }
.result-score-value { font-size: 2.5rem; font-weight: 800; line-height: 1; margin-bottom: 0.25rem; }
.result-score-box.success .result-score-value { color: var(--success-text); }
.result-score-box.warning .result-score-value { color: var(--warning-text); }
.result-score-box.danger .result-score-value { color: var(--danger-text); }
.result-score-box.info .result-score-value { color: var(--info-text); }
.result-score-unit { font-size: 0.875rem; color: var(--text-3); margin-bottom: 0.75rem; }
.result-category { font-size: 1rem; font-weight: 700; }
.result-score-box.success .result-category { color: var(--success); }
.result-score-box.warning .result-category { color: var(--warning); }
.result-score-box.danger .result-category { color: var(--danger); }
.result-score-box.info .result-category { color: var(--info); }

.result-interpretation { font-size: 0.875rem; color: var(--text-2); line-height: 1.5; margin-bottom: 1rem; }
.result-recommendation {
  background: var(--bg);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.5;
  margin-bottom: 1rem;
}
.result-details { display: grid; gap: 0.375rem; margin-bottom: 1rem; }
.result-detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
}
.result-detail-row:last-child { border-bottom: none; }
.result-detail-label { color: var(--text-3); }
.result-detail-value { font-weight: 500; color: var(--text-2); }
.result-source {
  font-size: 0.75rem;
  color: var(--text-4);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.result-source a { color: var(--primary); }
.result-source a:hover { text-decoration: underline; }
.result-actions { display: flex; gap: 0.625rem; margin-bottom: 1rem; }
.result-actions .btn { flex: 1; justify-content: center; font-size: 0.8125rem; padding: 0.5rem 0.75rem; }

/* ===== GUIDELINE DETAIL ===== */
.guideline-layout { display: grid; grid-template-columns: 1fr 280px; gap: 2rem; align-items: start; }
.guideline-main { display: flex; flex-direction: column; gap: 1.25rem; }
.guideline-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.guideline-section-head {
  padding: 0.875rem 1.375rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.625rem;
}
.guideline-section-icon { font-size: 1rem; }
.guideline-section-title { font-size: 0.9375rem; font-weight: 600; color: var(--text); }
.guideline-section-body { padding: 1.25rem 1.375rem; }

/* Markdown rendered content */
.md-content p { font-size: 0.9375rem; color: var(--text-2); line-height: 1.65; margin-bottom: 0.75rem; }
.md-content p:last-child { margin-bottom: 0; }
.md-content strong { font-weight: 600; color: var(--text); }
.md-content ul { padding-left: 0; list-style: none; display: flex; flex-direction: column; gap: 0.375rem; }
.md-content li { font-size: 0.9375rem; color: var(--text-2); line-height: 1.5; padding-left: 1.25rem; position: relative; }
.md-content li::before { content: '•'; position: absolute; left: 0.25rem; color: var(--primary); font-weight: 700; }
.md-heading { display: block; font-size: 0.875rem; font-weight: 700; color: var(--text); margin: 0.875rem 0 0.375rem; }
.md-heading:first-child { margin-top: 0; }

/* Guideline sidebar */
.guideline-sidebar { display: flex; flex-direction: column; gap: 1rem; }
.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}
.info-card-title { font-size: 0.8125rem; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.05em; }
.info-row { display: flex; flex-direction: column; gap: 0.2rem; }
.info-label { font-size: 0.75rem; color: var(--text-4); }
.info-value { font-size: 0.875rem; color: var(--text-2); font-weight: 500; }
.info-value a { color: var(--primary); }
.info-value a:hover { text-decoration: underline; }

/* ===== HOME PAGE ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 60%, #2563eb 100%);
  padding: 3.25rem 0;
  color: white;
  margin-bottom: 2.5rem;
}
/* decorative medical cross/dot pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.14) 1px, transparent 0);
  background-size: 22px 22px;
  pointer-events: none;
}
/* soft glow accent */
.hero::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(255,255,255,0.16) 0%, transparent 65%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.hero h1 { font-size: 2.25rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 0.625rem; }
.hero p { font-size: 1.0625rem; opacity: 0.85; max-width: 540px; line-height: 1.6; margin-bottom: 1.75rem; }
.hero-actions { display: flex; gap: 0.875rem; flex-wrap: wrap; }
.hero-actions .btn { padding: 0.75rem 1.5rem; font-size: 0.9375rem; }
.btn-white { background: white; color: var(--primary); border-color: white; }
.btn-white:hover { background: var(--primary-light); border-color: var(--primary-light); }
.btn-outline-white { background: transparent; color: white; border-color: rgba(255,255,255,0.5); }
.btn-outline-white:hover { background: rgba(255,255,255,0.1); border-color: white; }

.home-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-bottom: 2.5rem; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.375rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.stat-card { transition: transform 0.15s, box-shadow 0.15s; }
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-icon { width: 48px; height: 48px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; flex-shrink: 0; box-shadow: 0 4px 10px -3px rgba(0,0,0,0.18); }
.stat-icon-blue { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.stat-icon-green { background: linear-gradient(135deg, #34d399, #059669); }
.stat-icon-purple { background: linear-gradient(135deg, #c084fc, #7c3aed); }
.stat-val { font-size: 1.875rem; font-weight: 800; color: var(--text); line-height: 1; }
.stat-label { font-size: 0.875rem; color: var(--text-3); margin-top: 0.125rem; }

/* quick access */
.home-section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.home-section-title { font-size: 1.125rem; font-weight: 700; color: var(--text); letter-spacing: -0.01em; }
.home-section-link { font-size: 0.8125rem; font-weight: 600; color: var(--primary); white-space: nowrap; }
.home-section-link:hover { text-decoration: underline; }
.quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 2.5rem; }
.quick-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
  position: relative;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.quick-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--border-focus); }
.quick-card-name { font-size: 0.9375rem; font-weight: 600; color: var(--text); line-height: 1.35; padding-right: 1.25rem; }
.quick-card-arrow { position: absolute; top: 1rem; right: 1.125rem; color: var(--text-3); font-size: 1rem; transition: transform 0.15s, color 0.15s; }
.quick-card:hover .quick-card-arrow { color: var(--primary); transform: translateX(3px); }

.home-modules { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 2.5rem; }
.module-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.module-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.module-icon { font-size: 2rem; margin-bottom: 0.25rem; }
.module-title { font-size: 1.25rem; font-weight: 700; color: var(--text); }
.module-desc { font-size: 0.9rem; color: var(--text-3); line-height: 1.5; }
.module-cta { margin-top: auto; display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.875rem; font-weight: 600; color: var(--primary); }

.disclaimer-banner {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--warning-text);
  line-height: 1.5;
}
.disclaimer-banner svg { flex-shrink: 0; margin-top: 1px; }

/* ===== ADMIN ===== */
.admin-layout { display: grid; grid-template-columns: 220px 1fr; gap: 2rem; align-items: start; }
.admin-sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.admin-sidebar-head { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); font-size: 0.8125rem; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; }
.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.7rem 1.25rem;
  font-size: 0.875rem;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
}
.admin-nav-item:last-child { border-bottom: none; }
.admin-nav-item:hover { background: var(--bg); }
.admin-nav-item.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.admin-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.admin-content-head {
  padding: 1.125rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.admin-content-title { font-size: 1rem; font-weight: 600; color: var(--text); }
.admin-content-body { padding: 1.5rem; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { text-align: left; padding: 0.625rem 0.875rem; font-size: 0.8125rem; font-weight: 600; color: var(--text-3); border-bottom: 2px solid var(--border); white-space: nowrap; }
.admin-table td { padding: 0.75rem 0.875rem; font-size: 0.875rem; color: var(--text-2); border-bottom: 1px solid var(--border); vertical-align: middle; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--bg); }
.admin-table td .btn { padding: 0.3rem 0.7rem; font-size: 0.8rem; }
.td-actions { display: flex; gap: 0.375rem; }

/* Login */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-md);
}
.login-card h2 { font-size: 1.375rem; font-weight: 700; margin-bottom: 0.375rem; }
.login-card p { font-size: 0.875rem; color: var(--text-3); margin-bottom: 1.75rem; }
.login-error { color: var(--danger); font-size: 0.8125rem; margin-top: 0.5rem; }

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-4);
}
.empty-state svg { width: 56px; height: 56px; margin: 0 auto 1rem; opacity: 0.25; }
.empty-state h3 { font-size: 1.125rem; font-weight: 600; color: var(--text-2); margin-bottom: 0.375rem; }
.empty-state p { font-size: 0.9rem; max-width: 320px; margin: 0 auto; }

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-3);
  margin-bottom: 1.25rem;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { font-size: 0.75rem; }

/* ===== BACK BUTTON ===== */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  color: var(--text-3);
  margin-bottom: 1.25rem;
  transition: color 0.15s;
}
.back-link:hover { color: var(--primary); }

/* ===== TOAST ===== */
.toast-wrap { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 1000; display: flex; flex-direction: column; gap: 0.625rem; }
.toast {
  background: var(--text);
  color: white;
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.2s ease;
  max-width: 320px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
@keyframes slideIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* ===== FOOTER ===== */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
  margin-top: auto;
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
}
.footer-inner p { font-size: 0.8125rem; color: var(--text-3); }
.footer-disclaimer { font-size: 0.75rem; color: var(--text-4); margin-top: 0.25rem; }

/* ===== PRINT STYLES ===== */
@media print {
  .header, .footer, .calc-form-card, .breadcrumb, .back-link,
  .result-actions, .page-header, .search-bar, .cards-grid { display: none !important; }
  body { background: white; }
  #app { padding: 0; }
  .calc-layout { grid-template-columns: 1fr; }
  .calc-result-card { border: none; border-radius: 0; box-shadow: none; }
  .calc-result-head { background: white; }
  .calc-result-body { padding: 0; }
  .result-score-box { border: 2px solid #333; background: #f9f9f9 !important; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .calc-layout, .guideline-layout { grid-template-columns: 1fr; }
  .guideline-sidebar { display: grid; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1rem;
    flex-direction: column;
    gap: 0.25rem;
    box-shadow: var(--shadow-md);
  }
  .nav.open { display: flex; }
  .nav-item { width: 100%; padding: 0.75rem 1rem; }
  .home-stats { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr; }
  .home-modules { grid-template-columns: 1fr; }
  .form-row-2, .form-row-3 { grid-template-columns: 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .guideline-sidebar { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.625rem; }
}

@media (max-width: 480px) {
  .header-inner { padding: 0 1rem; }
  .container { padding: 0 1rem; }
  .page { padding: 1.25rem 0 2rem; }
  .cards-grid { grid-template-columns: 1fr; }
  .q-options { flex-direction: column; }
  .q-option { flex-direction: row; align-items: center; gap: 0.5rem; }
}