/**
 * Main Styles - Global styles and CSS variables
 * 主样式 - 全局样式和CSS变量
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
  /* Colors - Emerald Theme */
  --color-primary: #10B981;
  --color-primary-light: #D1FAE5;
  --color-primary-bg: #ECFDF5;
  --color-primary-dark: #059669;

  /* Secondary Colors */
  --color-secondary: #3B82F6;
  --color-secondary-light: #DBEAFE;
  --color-secondary-bg: #EFF6FF;

  /* Accent Colors */
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-success: #10B981;

  /* Text Colors */
  --color-text-primary: #1F2937;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-text-light: #D1D5DB;

  /* Background Colors */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F9FAFB;
  --color-bg-tertiary: #F3F4F6;

  /* Border Colors */
  --color-border: #F3F4F6;
  --color-border-light: #E5E7EB;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-primary: 0 10px 15px -3px rgba(16, 185, 129, 0.2);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 20px;
  --spacing-2xl: 24px;
  --spacing-3xl: 32px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 22px;
  --font-size-3xl: 26px;
  --font-size-4xl: 30px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-toast: 600;

  /* Layout */
  --header-height: 56px;
  --footer-height: 80px;
  --container-width: 375px;
  --container-height: 812px;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Hide scrollbar */
.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* ============================================
   App Container
   ============================================ */
.app-container {
  width: var(--container-width);
  height: var(--container-height);
  max-height: 100vh;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Responsive adjustments - 手机端全屏显示 */
@media (max-width: 768px) {
  .app-container {
    width: 100%;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    border: none;
    box-shadow: none;
  }
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ============================================
   Page Layout
   ============================================ */
.page {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.page-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-xl);
}

.page-content.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.page-content.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

/* ============================================
   Header Styles
   ============================================ */
.header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.header-back {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.header-back:hover {
  color: var(--color-text-primary);
}

.header-home {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.header-home:hover {
  color: var(--color-primary);
}

.header-title {
  flex: 1;
  text-align: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.header-spacer {
  width: 40px;
}

.header-logo {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.header-progress {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

/* ============================================
   Footer Styles
   ============================================ */
.footer {
  height: var(--footer-height);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 var(--spacing-xl);
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.footer-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-light);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.footer-tab:hover,
.footer-tab.active {
  color: var(--color-primary);
}

.footer-tab-icon {
  width: 24px;
  height: 24px;
}

.footer-tab-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.footer-disclaimer {
  height: var(--footer-height);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--spacing-xl);
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.footer-action {
  padding: var(--spacing-lg) var(--spacing-xl);
  padding-bottom: var(--spacing-2xl);
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.footer-action-disclaimer {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

/* ============================================
   Disclaimer Styles
   ============================================ */
.disclaimer {
  padding: var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
}

.disclaimer-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.disclaimer-info {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  background-color: var(--color-warning-light);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.disclaimer-info .disclaimer-text {
  color: #92400E;
}

.disclaimer-icon {
  flex-shrink: 0;
  color: var(--color-warning);
}

/* ============================================
   Loading & Animations
   ============================================ */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse-soft {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

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

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-pulse-soft {
  animation: pulse-soft 2s ease-in-out infinite;
}

.animate-slide-up {
  animation: slide-up 0.3s ease-out;
}

.animate-fade-in {
  animation: fade-in 0.2s ease-out;
}

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

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }

.font-bold { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-medium { font-weight: var(--font-weight-medium); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.hidden { display: none !important; }
.invisible { visibility: hidden; }

/* ============================================
   Error Toast Styles
   ============================================ */
.error-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  z-index: var(--z-toast);
  opacity: 0;
  transition: all 0.3s ease;
}

.error-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.error-toast-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background-color: #FEE2E2;
  border: 1px solid #FECACA;
  color: #DC2626;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  max-width: 320px;
}

.error-toast-icon {
  flex-shrink: 0;
}

/* ============================================
   Loading Overlay Styles
   ============================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.9);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.loading-overlay.show {
  opacity: 1;
}

.loading-overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.loading-spinner-large {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-overlay-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* Inline Loading */
.loading-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xl);
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-inline-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Loading Dots */
.loading-dots {
  display: inline-flex;
  gap: 4px;
}

.loading-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-primary);
  border-radius: 50%;
  animation: loading-dot 1.4s infinite ease-in-out both;
}

.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }
.loading-dot:nth-child(3) { animation-delay: 0s; }

@keyframes loading-dot {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

/* Loading Progress */
.loading-progress {
  width: 100%;
  max-width: 280px;
}

.loading-progress-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.loading-progress-bar {
  height: 6px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.loading-progress-fill {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.loading-progress-percent {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: right;
  margin-top: var(--spacing-xs);
}

/* ============================================
   Skeleton Loading Styles
   ============================================ */
.skeleton-card,
.skeleton-list,
.skeleton-form {
  padding: var(--spacing-lg);
}

.skeleton-header {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.skeleton-avatar,
.skeleton-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
}

.skeleton-lines {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skeleton-line {
  height: 12px;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
}

.skeleton-line-short { width: 40%; }
.skeleton-line-medium { width: 70%; }
.skeleton-line-long { width: 90%; }

.skeleton-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skeleton-list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
}

.skeleton-input {
  height: 48px;
  border-radius: var(--radius-lg);
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  margin-bottom: var(--spacing-lg);
}

.skeleton-button {
  height: 48px;
  border-radius: var(--radius-lg);
  background: linear-gradient(90deg, #d0f0e0 25%, #b0e0d0 50%, #d0f0e0 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
}

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