/*
Theme Name: 집수리닷컴
Theme URI: https://www.zibsuri.com
Author: ZibsuriTeam
Description: 집수리닷컴 - 단계별로 배우는 집수리 플랫폼. 계산기, 학습과정, 노하우.
Version: 2.0.0
Text Domain: zibsuri
*/

/* ============================================
   0. FONTS & VARIABLES
   ============================================ */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');

:root {
  /* Professional Dark Theme */
  --bg-primary: #0c0f14;
  --bg-secondary: #131720;
  --bg-tertiary: #1a1f2e;
  --bg-card: #161b27;
  --bg-card-hover: #1c2235;
  --bg-elevated: #1e2433;

  /* Text */
  --text-primary: #e4e7ec;
  --text-secondary: #8a94a6;
  --text-tertiary: #5a6478;
  --text-inverse: #0c0f14;

  /* Accent - Warm Gold / Amber */
  --accent-gold: #d4a853;
  --accent-gold-light: #e8c97a;
  --accent-gold-dim: rgba(212, 168, 83, 0.15);
  --accent-gold-glow: rgba(212, 168, 83, 0.25);

  /* Functional Colors */
  --accent-blue: #4a90d9;
  --accent-blue-dim: rgba(74, 144, 217, 0.12);
  --accent-green: #3fae6f;
  --accent-green-dim: rgba(63, 174, 111, 0.12);
  --accent-red: #d9534f;
  --accent-red-dim: rgba(217, 83, 79, 0.12);
  --accent-orange: #e0853e;
  --accent-orange-dim: rgba(224, 133, 62, 0.12);
  --accent-cyan: #47b8c7;
  --accent-cyan-dim: rgba(71, 184, 199, 0.12);
  --accent-purple: #8b6cc1;

  /* Borders & Shadows */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.15);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.35);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 20px rgba(212, 168, 83, 0.1);

  /* Spacing */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Fonts */
  --font-sans: 'Pretendard Variable', 'Pretendard', -apple-system, 'Noto Sans KR', sans-serif;
  --font-heading: 'Pretendard Variable', 'Pretendard', -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ============================================
   1. COMMON COMPONENTS
   ============================================ */

/* Buttons */
.pixel-btn {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 28px;
  border: 1px solid var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}

.pixel-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.pixel-btn:active {
  transform: translateY(0);
}

.pixel-btn--green {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: #fff;
}
.pixel-btn--green:hover {
  background: #34c96e;
  border-color: #34c96e;
}

.pixel-btn--orange {
  background: var(--accent-gold);
  border-color: var(--accent-gold);
  color: var(--text-inverse);
}
.pixel-btn--orange:hover {
  background: var(--accent-gold-light);
  border-color: var(--accent-gold-light);
}

.pixel-btn--red {
  background: var(--accent-red);
  border-color: var(--accent-red);
  color: #fff;
}

.pixel-btn--sm {
  font-size: 0.8rem;
  padding: 8px 18px;
}

.pixel-btn--lg {
  font-size: 1rem;
  padding: 16px 36px;
  border-radius: var(--radius-md);
}

/* Inputs */
.pixel-input {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 11px 14px;
  border: 1px solid var(--border-default);
  background: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  width: 100%;
  border-radius: var(--radius-sm);
  transition: border-color 0.2s;
}

.pixel-input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-dim);
}

.pixel-input::placeholder {
  color: var(--text-tertiary);
}

.pixel-select {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 11px 14px;
  border: 1px solid var(--border-default);
  background: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  width: 100%;
  cursor: pointer;
  appearance: none;
  border-radius: var(--radius-sm);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238a94a6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  transition: border-color 0.2s;
}

.pixel-select:focus {
  border-color: var(--accent-gold);
}

/* ============================================
   2. ANIMATIONS (subtle, professional)
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes gentleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes progressFill {
  from { width: 0%; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes pulseSubtle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-3px); }
  75% { transform: translateX(3px); }
}

.animate-in {
  animation: fadeInUp 0.5s ease-out forwards;
}

.antigravity, .antigravity-slow, .antigravity-rotate {
  animation: gentleFloat 6s ease-in-out infinite;
}

/* ============================================
   3. LAYOUT & NAVIGATION
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(12, 15, 20, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 24px;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.02em;
}

.site-logo .logo-icon {
  font-size: 1.3rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-menu a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px;
}

/* Header Stats - Level indicator */
.header-stats {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-level {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-gold);
  background: var(--accent-gold-dim);
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.02em;
}

.header-xp-bar {
  width: 80px;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.header-xp-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-light));
  border-radius: 3px;
  transition: width 0.6s ease;
}

/* Container */
.site-main {
  padding-top: 60px;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Section Headings */
.section-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 10px;
  letter-spacing: -0.03em;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 48px;
  line-height: 1.7;
}

.section-divider {
  width: 100%;
  height: 1px;
  background: var(--border-subtle);
  margin: 0;
}

/* ============================================
   4. HERO SECTION
   ============================================ */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(212, 168, 83, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 60%, rgba(74, 144, 217, 0.05) 0%, transparent 60%),
    var(--bg-primary);
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.015) 1px, transparent 0);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 10;
  padding: 40px 20px;
  max-width: 700px;
}

.hero-pixel-house {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
  animation: gentleFloat 5s ease-in-out infinite;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.04em;
  line-height: 1.3;
}

.hero-title span {
  color: var(--accent-gold);
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
  border-right: none;
  animation: none;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-stats-bar {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
  padding: 20px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  min-width: 120px;
  animation: none;
}

.hero-stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-gold);
  display: block;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Floating Tools */
.floating-tools {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.floating-tool {
  position: absolute;
  font-size: 1.5rem;
  opacity: 0.06;
}

.floating-tool:nth-child(1) { top: 15%; left: 10%; animation: gentleFloat 8s 0s ease-in-out infinite; }
.floating-tool:nth-child(2) { top: 25%; right: 15%; animation: gentleFloat 9s 1s ease-in-out infinite; }
.floating-tool:nth-child(3) { bottom: 30%; left: 20%; animation: gentleFloat 10s 2s ease-in-out infinite; }
.floating-tool:nth-child(4) { top: 40%; right: 10%; animation: gentleFloat 8s 0.5s ease-in-out infinite; }
.floating-tool:nth-child(5) { bottom: 20%; right: 25%; animation: gentleFloat 9s 1.5s ease-in-out infinite; }
.floating-tool:nth-child(6) { top: 60%; left: 8%; animation: gentleFloat 10s 3s ease-in-out infinite; }
.floating-tool:nth-child(7) { top: 10%; left: 45%; animation: gentleFloat 8s 0.8s ease-in-out infinite; }
.floating-tool:nth-child(8) { bottom: 15%; left: 40%; animation: gentleFloat 9s 2s ease-in-out infinite; }

/* ============================================
   5. CALCULATOR SECTION
   ============================================ */
.calc-section {
  padding: 96px 0;
  position: relative;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  margin-top: 0;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 0;
  transition: all 0.25s ease;
  overflow: hidden;
}

.calc-card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.calc-card-header {
  background: var(--bg-secondary);
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 14px;
}

.calc-card-icon {
  font-size: 1.6rem;
  animation: none;
}

.calc-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.calc-card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.calc-card-body {
  padding: 22px;
}

.calc-field {
  margin-bottom: 16px;
}

.calc-field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 6px;
}

.calc-field .input-group {
  display: flex;
  gap: 8px;
  align-items: center;
}

.calc-field .input-unit {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-tertiary);
  white-space: nowrap;
  min-width: 28px;
}

.calc-result {
  background: var(--accent-green-dim);
  border: 1px solid rgba(63, 174, 111, 0.25);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-top: 18px;
  text-align: center;
  display: none;
}

.calc-result.show {
  display: block;
  animation: scaleIn 0.3s ease;
}

.calc-result-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-green);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calc-result-value {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-green);
  margin-bottom: 8px;
}

.calc-result-detail {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

.calc-xp-reward {
  margin-top: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-gold);
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-gold-dim);
  border-radius: 20px;
}

/* ============================================
   6. QUEST SYSTEM (Learning Path)
   ============================================ */
.quest-section {
  padding: 96px 0;
  position: relative;
}

.job-class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
  gap: 12px;
  margin-bottom: 36px;
}

.job-class-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.job-class-card:hover {
  border-color: var(--border-default);
  background: var(--bg-card-hover);
}

.job-class-card.selected {
  border-color: var(--accent-gold);
  background: var(--accent-gold-dim);
}

.job-class-card.selected::after { display: none; }

.job-class-sprite {
  font-size: 2rem;
  margin-bottom: 10px;
  display: block;
  animation: none;
}

.job-class-name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.job-class-name-en {
  font-size: 0.72rem;
  color: var(--text-tertiary);
}

.job-class-level {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-top: 8px;
}

/* Quest Board */
.quest-board {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.quest-board-header {
  background: var(--bg-secondary);
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.quest-board-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.level-progress {
  display: flex;
  align-items: center;
  gap: 14px;
}

.level-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 20px;
  color: var(--accent-gold);
  background: var(--accent-gold-dim);
}

.xp-bar-container {
  width: 180px;
}

.xp-bar {
  height: 8px;
  background: var(--bg-primary);
  border-radius: 4px;
  overflow: hidden;
}

.xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-light));
  border-radius: 4px;
  transition: width 0.6s ease;
}

.xp-bar-fill::after { display: none; }

.xp-text {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  text-align: right;
  margin-top: 4px;
  font-weight: 500;
}

/* Quest List */
.quest-list {
  padding: 20px 24px;
}

.quest-tier {
  margin-bottom: 24px;
}

.quest-tier-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
  letter-spacing: 0.02em;
}

.quest-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  background: var(--bg-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.quest-item:hover {
  border-color: var(--border-default);
  background: var(--bg-card-hover);
}

.quest-item.completed {
  border-color: rgba(63, 174, 111, 0.3);
  background: var(--accent-green-dim);
  opacity: 0.8;
}

.quest-item.locked {
  opacity: 0.35;
  cursor: not-allowed;
}

.quest-item.active {
  border-color: var(--accent-gold);
}

.quest-checkbox {
  width: 22px;
  height: 22px;
  border: 2px solid var(--border-default);
  border-radius: 6px;
  background: var(--bg-primary);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  transition: all 0.2s;
}

.quest-item.completed .quest-checkbox {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: #fff;
}

.quest-info {
  flex: 1;
}

.quest-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.quest-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.quest-reward {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-gold);
  white-space: nowrap;
  background: var(--accent-gold-dim);
  padding: 3px 10px;
  border-radius: 12px;
}

/* Quest Modal */
.quest-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.quest-modal.show {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.quest-modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: scaleIn 0.25s ease;
}

.quest-modal-header {
  background: var(--bg-secondary);
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

.quest-modal-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.quest-modal-close {
  font-size: 1.3rem;
  color: var(--text-tertiary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
}

.quest-modal-close:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.quest-modal-body {
  padding: 24px;
}

.quest-step {
  display: flex;
  gap: 16px;
  padding: 16px;
  margin-bottom: 10px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
}

.quest-step-num {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-blue);
  background: var(--accent-blue-dim);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  flex-shrink: 0;
}

.quest-step.done .quest-step-num {
  background: var(--accent-green);
  color: #fff;
}

.quest-step-content h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.quest-step-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Training Area */
.training-area {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 20px;
}

.training-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 14px;
}

.training-question {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.7;
  font-weight: 500;
}

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

.training-option {
  padding: 13px 18px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.92rem;
  color: var(--text-primary);
}

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

.training-option.correct {
  border-color: var(--accent-green);
  background: var(--accent-green-dim);
  color: var(--accent-green);
  font-weight: 600;
}

.training-option.wrong {
  border-color: var(--accent-red);
  background: var(--accent-red-dim);
  color: var(--accent-red);
  animation: shake 0.3s ease;
}

/* ============================================
   7. KNOWHOW SECTION
   ============================================ */
.knowhow-section {
  padding: 96px 0;
}

.knowhow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.knowhow-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.25s;
  cursor: pointer;
}

.knowhow-card:hover {
  border-color: var(--border-default);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.knowhow-card-img {
  height: 140px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.knowhow-card-body {
  padding: 18px;
}

.knowhow-card-category {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 8px;
  padding: 3px 10px;
  background: var(--accent-blue-dim);
  border-radius: 12px;
  display: inline-block;
  letter-spacing: 0.02em;
}

.knowhow-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.knowhow-card-preview {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.knowhow-card-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.knowhow-difficulty {
  font-size: 0.75rem;
  font-weight: 600;
}

.knowhow-difficulty.easy { color: var(--accent-green); }
.knowhow-difficulty.medium { color: var(--accent-orange); }
.knowhow-difficulty.hard { color: var(--accent-red); }

.knowhow-xp {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-gold);
}

/* Know-how Detail */
.knowhow-detail {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-top: 28px;
  line-height: 1.9;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.knowhow-detail.show {
  display: block;
  animation: fadeInUp 0.4s ease;
}

.knowhow-detail h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 28px 0 12px;
  letter-spacing: -0.01em;
}

.knowhow-detail h3:first-child {
  margin-top: 0;
}

.knowhow-detail ul {
  padding-left: 20px;
  margin: 12px 0;
}

.knowhow-detail li {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.knowhow-detail li strong {
  color: var(--text-primary);
}

.knowhow-detail .tip-box {
  background: var(--accent-blue-dim);
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 18px;
  margin: 18px 0;
}

.knowhow-detail .tip-box strong {
  color: var(--accent-blue);
}

.knowhow-detail .warning-box {
  background: var(--accent-red-dim);
  border-left: 3px solid var(--accent-red);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 18px;
  margin: 18px 0;
}

.knowhow-detail .warning-box strong {
  color: var(--accent-red);
}

/* ============================================
   8. SEMINAR SECTION (bottom, subtle)
   ============================================ */
.seminar-section {
  padding: 48px 0 60px;
  opacity: 0.45;
  transition: opacity 0.4s;
}

.seminar-section:hover {
  opacity: 0.85;
}

.seminar-section .section-title {
  font-size: 1.1rem;
  color: var(--text-tertiary);
  font-weight: 600;
}

.seminar-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  max-width: 640px;
  margin: 20px auto 0;
}

.seminar-banner p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 18px;
  line-height: 1.8;
}

/* ============================================
   9. USER PANEL
   ============================================ */
.user-panel {
  position: fixed;
  right: 20px;
  top: 74px;
  width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  z-index: 900;
  box-shadow: var(--shadow-lg);
  display: none;
}

.user-panel.show {
  display: block;
  animation: slideDown 0.2s ease;
}

.user-panel-header {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-panel-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.user-panel-close {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px;
}

.user-panel-body {
  padding: 16px 18px;
}

.user-stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.user-stat-row:last-of-type {
  border-bottom: none;
}

.user-stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.user-stat-val {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.achievement-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.achievement-badge {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.achievement-badge.earned {
  border-color: var(--accent-gold);
  background: var(--accent-gold-dim);
}

.achievement-badge.locked {
  opacity: 0.25;
  filter: grayscale(1);
}

/* ============================================
   10. FOOTER
   ============================================ */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 28px 24px;
  text-align: center;
}

.footer-pixel-art {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* ============================================
   11. TOASTS & NOTIFICATIONS
   ============================================ */
.toast-container {
  position: fixed;
  top: 74px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  animation: slideDown 0.3s ease;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast--xp {
  border-color: rgba(212, 168, 83, 0.4);
  color: var(--accent-gold);
}

.toast--quest {
  border-color: rgba(63, 174, 111, 0.4);
  color: var(--accent-green);
}

.toast--levelup {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background: var(--accent-gold-dim);
  animation: scaleIn 0.35s ease;
}

/* ============================================
   12. PWA INSTALL (Anti-Gravity Banner)
   ============================================ */
@keyframes antigravityBanner {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  20% { transform: translateX(-50%) translateY(-10px); }
  40% { transform: translateX(-50%) translateY(-4px); }
  60% { transform: translateX(-50%) translateY(-12px); }
  80% { transform: translateX(-50%) translateY(-6px); }
}

@keyframes antigravityIcon {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-8px) rotate(-6deg); }
  50% { transform: translateY(-3px) rotate(4deg); }
  75% { transform: translateY(-10px) rotate(-3deg); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(212, 168, 83, 0.15), 0 0 0 0 rgba(212, 168, 83, 0); }
  50% { box-shadow: 0 8px 36px rgba(212, 168, 83, 0.3), 0 0 0 8px rgba(212, 168, 83, 0.06); }
}

@keyframes shimmerBg {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.pwa-install-prompt {
  display: none;
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elevated);
  border: 1px solid var(--accent-gold);
  border-radius: var(--radius-lg);
  padding: 18px 24px;
  z-index: 2500;
  align-items: center;
  gap: 16px;
  animation: antigravityBanner 5s ease-in-out infinite, glowPulse 3s ease-in-out infinite;
  max-width: 480px;
  width: calc(100% - 32px);
}

.pwa-install-prompt::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--accent-gold), transparent 40%, transparent 60%, var(--accent-gold-light));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.pwa-install-prompt.show {
  display: flex;
}

.pwa-install-icon {
  font-size: 2rem;
  flex-shrink: 0;
  animation: antigravityIcon 4s ease-in-out infinite;
  filter: drop-shadow(0 2px 8px rgba(212, 168, 83, 0.3));
}

.pwa-install-body {
  flex: 1;
  min-width: 0;
}

.pwa-install-heading {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 2px;
  letter-spacing: -0.01em;
}

.pwa-install-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.pwa-install-btn {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 10px 22px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  color: var(--text-inverse);
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
  background-size: 200% auto;
  animation: shimmerBg 3s linear infinite;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 2px 8px rgba(212, 168, 83, 0.3);
}

.pwa-install-btn:hover {
  transform: scale(1.04);
  box-shadow: 0 4px 16px rgba(212, 168, 83, 0.4);
}

.pwa-install-btn:active {
  transform: scale(0.97);
}

.pwa-install-dismiss {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px 2px;
  line-height: 1;
  flex-shrink: 0;
  transition: color 0.15s;
}

.pwa-install-dismiss:hover {
  color: var(--text-primary);
}

/* ============================================
   13. LOADING SCREEN
   ============================================ */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  transition: opacity 0.4s;
}

.loading-screen.hide {
  opacity: 0;
  pointer-events: none;
}

.loading-pixel-bar {
  width: 160px;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
}

.loading-pixel-fill {
  height: 100%;
  background: var(--accent-gold);
  border-radius: 2px;
  animation: progressFill 1.2s ease forwards;
}

.loading-text {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Achievement unlock */
.achievement-unlock {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 5000;
  text-align: center;
  display: none;
}

.achievement-unlock.show {
  display: block;
  animation: scaleIn 0.4s ease;
}

.achievement-unlock-bg {
  background: rgba(0,0,0,0.7);
  position: fixed;
  inset: 0;
  z-index: 4999;
}

.achievement-unlock-content {
  background: var(--bg-card);
  border: 1px solid var(--accent-gold);
  border-radius: var(--radius-lg);
  padding: 40px 52px;
  position: relative;
  z-index: 5001;
  box-shadow: var(--shadow-glow);
}

.achievement-unlock-icon {
  font-size: 3rem;
  margin-bottom: 14px;
}

.achievement-unlock-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 6px;
}

.achievement-unlock-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.level-up-overlay {
  position: fixed;
  inset: 0;
  z-index: 4000;
  pointer-events: none;
  background: rgba(212, 168, 83, 0.06);
  animation: fadeIn 0.3s ease forwards;
}

/* Pixel particles - make them very subtle */
.pixel-particle {
  position: fixed;
  width: 2px;
  height: 2px;
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
  animation: gentleFloat 12s ease-in-out infinite;
}

/* ============================================
   14. RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .user-panel { display: none !important; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2rem; }
  .hero-tagline { font-size: 1rem; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(12, 15, 20, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 12px;
  }

  .nav-menu.open { display: flex; }
  .nav-toggle { display: block; }
  .header-stats { display: none; }
  .calc-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 1.4rem; }

  .quest-board-header {
    flex-direction: column;
    text-align: center;
  }

  .level-progress { flex-direction: column; width: 100%; }
  .xp-bar-container { width: 100%; }
  .hero-stats-bar { gap: 10px; }
  .hero-stat { padding: 16px 20px; min-width: 100px; }
  .knowhow-grid { grid-template-columns: 1fr; }
  .knowhow-detail { padding: 24px; }
  .container { padding: 0 16px; }

  .pwa-install-prompt {
    left: 16px;
    right: 16px;
    transform: none;
    width: auto;
    max-width: none;
    animation: glowPulse 3s ease-in-out infinite;
  }

  .pwa-install-prompt.show {
    animation: glowPulse 3s ease-in-out infinite;
  }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.6rem; }
  .hero-pixel-house { font-size: 2.5rem; }
  .pixel-btn--lg { padding: 14px 28px; font-size: 0.9rem; }
  .job-class-grid { grid-template-columns: repeat(2, 1fr); }
  .calc-section, .quest-section, .knowhow-section { padding: 64px 0; }
}