@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

/* ================================================================
   THEME VARIABLES
   ================================================================ */
:root, [data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-gradient: radial-gradient(circle at 15% 50%, #f1f5f9, #f8fafc 60%);
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: rgba(0, 0, 0, 0.05);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
  --text-main: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --primary: #10b981;
  --primary-hover: #059669;
  --primary-glow: rgba(16, 185, 129, 0.2);
  --accent: #3b82f6;
  --input-bg: rgba(255, 255, 255, 0.9);
  --input-border: rgba(0, 0, 0, 0.1);
  --callout-bg: rgba(248, 250, 252, 0.8);
  --table-alt: rgba(0, 0, 0, 0.02);
  --table-border: rgba(0, 0, 0, 0.05);
  --header-text: #0f172a;
}

[data-theme="dark"] {
  --bg-main: #121212;
  --bg-gradient: radial-gradient(circle at 15% 50%, #1e1e1e, #121212 60%);
  --card-bg: rgba(30, 30, 30, 0.85);
  --card-border: rgba(255, 255, 255, 0.15);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --text-main: #FFFFFF;
  --text-body: #E0E0E0;
  --text-muted: #A3A3A3;
  --primary: #10b981;
  --primary-hover: #34d399;
  --primary-glow: rgba(16, 185, 129, 0.25);
  --accent: #60a5fa;
  --input-bg: rgba(255, 255, 255, 0.08);
  --input-border: rgba(255, 255, 255, 0.25);
  --callout-bg: rgba(255, 255, 255, 0.06);
  --table-alt: rgba(255, 255, 255, 0.03);
  --table-border: rgba(255, 255, 255, 0.12);
  --header-text: #FFFFFF;
}

/* ================================================================
   GLOBAL STYLES & BEAUTIFICATION
   ================================================================ */
body {
  font-family: 'Outfit', system-ui, -apple-system, sans-serif !important;
  background: var(--bg-main) !important;
  background-image: var(--bg-gradient) !important;
  background-attachment: fixed !important;
  color: var(--text-body) !important;
  transition: background 0.3s ease, color 0.3s ease !important;
  min-height: 100vh;
}

/* Typography Overrides */
h1, h2, h3, h4, h5, h6 { color: var(--header-text) !important; }
.card-title, .converted-main, .ref-card-title, .single-result-value, .mistake-header { color: var(--header-text) !important; }
p, .card-subtitle, .toggle-text, .mistake-body, .form-label, .ref-result, .explanation { color: var(--text-muted) !important; }
.cw-heading { color: var(--header-text) !important; }
.cw-text { color: var(--text-muted) !important; }

/* Site Header */
.site-header {
  position: relative;
}
.site-header h1 {
  background: linear-gradient(135deg, var(--primary), var(--accent)) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  display: inline-block !important;
}

.site-title-h1 {
  font-size: 36px !important;
  font-weight: 800 !important;
  margin-bottom: 20px !important;
  text-align: center !important;
  letter-spacing: -0.5px !important;
}
.site-title-h1 a {
  text-decoration: none !important;
  color: var(--header-text) !important;
  transition: color 0.2s ease !important;
}
.site-title-h1 a:hover {
  color: var(--primary) !important;
}

/* Glassmorphism Cards */
.card, .scenario-card, .ref-card {
  background: var(--card-bg) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid var(--card-border) !important;
  border-radius: 20px !important;
  box-shadow: var(--card-shadow) !important;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease !important;
}
.card:hover, .scenario-card:hover, .ref-card:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15) !important;
}
.card-icon {
  background: rgba(16, 185, 129, 0.15) !important;
  color: var(--primary) !important;
  border-radius: 12px !important;
}

/* Forms & Inputs */
input[type="number"], input[type="text"], textarea, select {
  background: var(--input-bg) !important;
  border: 1px solid var(--input-border) !important;
  color: var(--header-text) !important;
  border-radius: 12px !important;
  padding: 12px 16px !important;
  font-family: 'Outfit', sans-serif !important;
  transition: all 0.3s ease !important;
}
input::placeholder, textarea::placeholder {
  color: var(--text-muted) !important;
  opacity: 0.8 !important;
}
select option {
  background: var(--bg-main) !important;
  color: var(--header-text) !important;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px var(--primary-glow) !important;
  outline: none !important;
}

/* Buttons */
.btn-filled, .convert-btn, #add-row-btn, #copy-results-btn, .btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover)) !important;
  color: #ffffff !important;
  border: none !important;
  border-radius: 12px !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 12px var(--primary-glow) !important;
  transition: all 0.3s ease !important;
}
.btn-filled:hover, .convert-btn:hover, #add-row-btn:hover, #copy-results-btn:hover, .btn-primary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 16px var(--primary-glow) !important;
  filter: brightness(1.1) !important;
}

.btn-secondary, .btn-outline, .add-row-btn {
  background: var(--callout-bg) !important;
  border: 1px solid var(--card-border) !important;
  color: var(--text-main) !important;
}
.btn-secondary:hover, .btn-outline:hover, .add-row-btn:hover {
  background: var(--table-alt) !important;
  transform: translateY(-2px) !important;
}

/* Multiplier / Stat Boxes */
.multiplier-box, .stat-box, .diff-stat-box {
  background: var(--callout-bg) !important;
  border: 1px solid var(--card-border) !important;
  border-radius: 16px !important;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.05) !important;
}
.multiplier-label, .diff-stat-label {
  color: var(--text-muted) !important;
}
.multiplier-value, .diff-stat-value {
  color: var(--primary) !important;
}

/* Callouts / Alerts */
.callout, .explanation, .mistake-block {
  background: var(--callout-bg) !important;
  border-left: 4px solid var(--primary) !important;
  border-radius: 0 12px 12px 0 !important;
}
.callout.yellow { border-left-color: #fbbf24 !important; }
.callout.red, .mistake-block, .error-msg, .cw-red { border-left-color: #ef4444 !important; }

/* Tables */
.results-table th, .raglan-table th, .measurements-table th {
  background: rgba(16, 185, 129, 0.1) !important;
  color: var(--primary) !important;
  border-bottom: 1px solid var(--table-border) !important;
}
.results-table td, .raglan-table td, .measurements-table td {
  border-bottom: 1px solid var(--table-border) !important;
  color: var(--text-main) !important;
}
.results-table tbody tr:nth-child(odd), .raglan-table tbody tr:nth-child(odd), .measurements-table tbody tr:nth-child(odd) {
  background: var(--table-alt) !important;
}
.results-table tbody tr:nth-child(even), .raglan-table tbody tr:nth-child(even), .measurements-table tbody tr:nth-child(even) {
  background: transparent !important;
}
.th-name, .th-delete {
  background: rgba(16, 185, 129, 0.1) !important;
}

/* Step Items */
.step-number {
  background: rgba(16, 185, 129, 0.15) !important;
  color: var(--primary) !important;
  border-radius: 50% !important;
}
.step-content strong { color: var(--header-text) !important; }

/* Toggles */
.toggle-slider {
  background: var(--border-subtle) !important;
  border: 1px solid var(--card-border) !important;
}
.toggle-switch input:checked + .toggle-slider {
  background: var(--primary) !important;
}
.toggle-text.active { color: var(--primary) !important; }

/* Links */
a {
  color: var(--accent) !important;
}
a:hover {
  color: var(--primary) !important;
}

/* Construction Warning Banner */
.construction-warning {
  background: var(--card-bg) !important;
  border: 1px solid var(--card-border) !important;
}
.cw-green { border-left: 4px solid var(--primary) !important; }
.cw-yellow { border-left: 4px solid #fbbf24 !important; }

/* Tooltip */
#tooltip {
  background: var(--bg-main) !important;
  color: var(--text-main) !important;
  border: 1px solid var(--card-border) !important;
  box-shadow: var(--card-shadow) !important;
}
#tooltip::after { border-top-color: var(--bg-main) !important; }
#tooltip::before { border-top-color: var(--card-border) !important; }

/* Code blocks */
code {
  background: var(--callout-bg) !important;
  color: var(--primary) !important;
  border: 1px solid var(--card-border) !important;
}

/* Theme Toggle Button */
.theme-toggle-wrapper {
  position: absolute;
  top: 24px;
  right: 24px;
}
@media (max-width: 768px) {
  .theme-toggle-wrapper {
    top: 16px;
    right: 16px;
  }
}
.theme-toggle-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  box-shadow: var(--card-shadow);
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}
.theme-toggle-btn:hover {
  transform: scale(1.1);
  border-color: var(--primary);
}
[data-theme="light"] .theme-toggle-btn .moon { display: block; }
[data-theme="light"] .theme-toggle-btn .sun { display: none; }
[data-theme="dark"] .theme-toggle-btn .moon { display: none; }
[data-theme="dark"] .theme-toggle-btn .sun { display: block; }

/* Decorative Background Blobs */
body::before, body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
}
body::before {
  top: -10%; left: -10%;
  width: 40vw; height: 40vw;
  background: rgba(16, 185, 129, 0.08);
}
body::after {
  bottom: -10%; right: -10%;
  width: 30vw; height: 30vw;
  background: rgba(59, 130, 246, 0.08);
}

/* ================================================================
   NAVIGATION & TOOL TITLE
   ================================================================ */
.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 28px 0 24px;
}
.nav-link {
  padding: 10px 20px;
  border-radius: 24px;
  background: var(--callout-bg);
  color: var(--text-muted) !important;
  text-decoration: none !important;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--card-border);
  transition: all 0.3s ease;
}
.nav-link:hover {
  background: rgba(16, 185, 129, 0.1);
  color: var(--primary) !important;
  border-color: var(--primary);
  transform: translateY(-2px);
}
.nav-link.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #fff !important;
  border-color: var(--primary);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.tool-title {
  font-size: 26px !important;
  font-weight: 600 !important;
  color: var(--header-text) !important;
  margin-top: 10px;
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

/* Text & Contrast Fixes for Guide Page */
li, .checklist li {
  color: var(--text-body) !important;
}
.mistake-header {
  color: var(--header-text) !important;
  background: var(--table-alt) !important;
}
.mistake-body, .checker-container, .mini-checker {
  background: transparent !important;
  color: var(--text-body) !important;
}
.stat-value, .checker-result, .checker-title, .result-text {
  color: var(--primary) !important;
}
.raglan-table td, .results-table td {
  color: var(--text-main) !important;
}
strong, b {
  color: var(--header-text) !important;
}
.step-number {
  background: var(--callout-bg) !important;
  box-shadow: none !important;
  border: 1px solid var(--primary) !important;
  color: var(--primary) !important;
  width: 32px !important;
  height: 32px !important;
  font-size: 16px !important;
}


/* ============================================================
   FAQ ACCORDION STYLES
   ============================================================ */
.faq-section {
  /* Inherits card styles */
}

.faq-list {
  display: flex;
  flex-direction: column;
}

.faq-item {
  border-bottom: 1px solid var(--table-border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 16px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question[aria-expanded="true"] {
  color: var(--primary);
  border-left: 3px solid var(--primary);
  padding-left: 12px;
}

.faq-chevron {
  transition: transform 0.2s ease;
  font-size: 18px;
  color: var(--text-muted);
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 0 16px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}
.faq-question[aria-expanded="true"] + .faq-answer {
  padding: 12px 0 16px 15px;
}