/* ===================================
   PA TOOLS - DESIGN SYSTEM
   "Be Comfortable, Gradually Recover"
   =================================== */

/* ============ CSS Variables ============ */
/* 다크 모드 (기본값) */
:root {
  /* Primary Colors */
  --primary-mint: #403C3B;
  --primary-mint-hover: #352F2E;
  --primary-mint-light: rgba(64, 60, 59, 0.1);
  --primary-mint-dark: #403C3B;

  /* Background Colors */
  --bg-main: #1a1a1a;
  --bg-card: #2a2a2a;
  --bg-secondary: #222222;
  --bg-surface: #333333;

  /* Text Colors */
  --text-primary: #ECECEC;
  --text-secondary: #999999;
  --text-tertiary: #666666;
  --text-dark: #1D1D1F;

  /* Border Colors */
  --border-light: #3a3a3a;
  --border-focus: #403C3B;

  /* Accent Colors */
  --accent-mint: #403C3B;
  --accent-coral: #FF6B6B;
  --accent-yellow: #FFB84D;
  --accent-purple: #A78BFA;

  /* Semantic Colors */
  --success: #34D399;
  --warning: #FBBF24;
  --error: #EF4444;
  --info: #60A5FA;

  /* Shadows */
  --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 12px 40px rgba(64, 60, 59, 0.15);
  --shadow-float: 0 20px 60px rgba(0, 0, 0, 0.4);

  /* Glass Effect */
  --glass-bg: rgba(42, 42, 42, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --blur-glass: blur(20px);

  /* Spacing System */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 64px;
  --spacing-2xl: 96px;

  /* Border Radius */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --radius-xl: 40px;
  --radius-full: 50px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* 라이트 모드 - 웜 뉴트럴 */
[data-theme="light"],
[data-theme="light"] body {
  /* Background Colors - 웜 뉴트럴 */
  --bg-main: #FAFAF8;
  /* 크림 화이트 */
  --bg-card: #FFFFFF;
  /* 깨끗한 화이트 */
  --bg-secondary: #F5F3EE;
  /* 베이지 서브 */
  --bg-surface: #F0EEE9;
  /* 웜 서피스 */

  /* Text Colors */
  --text-primary: #2B2B2B;
  /* 차콜 */
  --text-secondary: #352F2E;
  /* 그레이 */
  --text-tertiary: #403C3B;
  /* 라이트 그레이 */

  /* Border Colors */
  --border-light: #E5E7EB;
  /* 라이트 그레이 보더 */
  --border-focus: #403C3B;
  /* 민트 포커스 */

  /* Primary Colors - 민트 */
  --primary-mint: #403C3B;
  /* 민트 포인트 */
  --primary-mint-hover: #352F2E;
  /* 딥 민트 호버 */
  --primary-mint-light: rgba(64, 60, 59, 0.1);
  --primary-mint-dark: #352F2E;

  /* Accent Colors */
  --accent-mint: #403C3B;

  /* Shadows - 부드러운 웜톤 */
  --shadow-soft: 0 8px 32px rgba(43, 43, 43, 0.06);
  --shadow-card: 0 4px 20px rgba(43, 43, 43, 0.04);
  --shadow-hover: 0 12px 40px rgba(64, 60, 59, 0.15);
  --shadow-float: 0 20px 60px rgba(43, 43, 43, 0.1);

  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(43, 43, 43, 0.08);
}

/* ============ Reset & Base ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI',
    Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ============ Typography ============ */
.text-hero {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.text-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.text-subtitle {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
}

.text-body {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}

.text-caption {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ============ Gradient Backgrounds ============ */
.gradient-blue {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-light) 100%);
}

.gradient-soft {
  background: linear-gradient(135deg, #F5F5F7 0%, #E8E8ED 100%);
}

.gradient-radial-blue {
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
  opacity: 0.3;
}

/* ============ Card Components ============ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-soft);
}

.card-float {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-float);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-light) 100%);
  color: white;
  box-shadow: 0 4px 16px rgba(92, 133, 224, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(92, 133, 224, 0.4);
}

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

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 2px solid var(--text-tertiary);
}

.btn-secondary:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.btn-large {
  padding: 20px 48px;
  font-size: 18px;
  font-weight: 700;
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
}

/* ============ Input Fields ============ */
.input-field {
  width: 100%;
  padding: 16px 20px;
  font-size: 16px;
  background: var(--bg-card);
  border: 2px solid var(--text-tertiary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.input-field:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 4px rgba(92, 133, 224, 0.1);
}

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

/* ============ Progress Bar ============ */
.progress-container {
  width: 100%;
  height: 48px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  transition: width var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 16px;
}

/* ============ Sections ============ */
.section {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.section-hero {
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* ============ Grid Layouts ============ */
.grid-tools {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

/* ============ Tool Card ============ */
.tool-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  cursor: pointer;
  text-decoration: none;
  display: block;
}

.tool-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.tool-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-light) 100%);
  color: white;
}

.tool-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.tool-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============ Status Badge ============ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  gap: 4px;
}

.badge-success {
  background: rgba(52, 211, 153, 0.1);
  color: var(--success);
}

.badge-warning {
  background: rgba(251, 191, 36, 0.1);
  color: var(--warning);
}

.badge-info {
  background: rgba(96, 165, 250, 0.1);
  color: var(--info);
}

/* ============ Animations ============ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--text-tertiary);
  border-top-color: var(--primary-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ============ Notification ============ */
.notification {
  position: fixed;
  top: 100px;
  left: 50%;
  transform: translateX(-50%);
  padding: 16px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  box-shadow: var(--shadow-float);
  z-index: 10000;
  animation: fadeInUp 0.3s ease-out;
  max-width: 90%;
}

.notification-success {
  background: var(--success);
  color: white;
}

.notification-error {
  background: var(--error);
  color: white;
}

.notification-info {
  background: var(--info);
  color: white;
}

/* ============ Upload Zone ============ */
.upload-zone {
  border: 3px dashed var(--text-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  background: var(--bg-card);
}

.upload-zone:hover {
  border-color: var(--primary-blue);
  background: rgba(92, 133, 224, 0.03);
}

.upload-zone.dragover {
  border-color: var(--primary-blue);
  background: rgba(92, 133, 224, 0.1);
  transform: scale(1.02);
}

/* ============ Responsive ============ */
@media (max-width: 768px) {
  .text-hero {
    font-size: 36px;
  }

  .text-title {
    font-size: 28px;
  }

  .section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .section-hero {
    padding: var(--spacing-xl) var(--spacing-sm);
  }

  .grid-tools {
    grid-template-columns: 1fr;
  }

  .grid-2col {
    grid-template-columns: 1fr;
  }

  .btn-large {
    padding: 16px 32px;
    font-size: 16px;
  }
}

/* ============ Utility Classes ============ */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-xs {
  margin-top: var(--spacing-xs);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-xs {
  margin-bottom: var(--spacing-xs);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}