/**
 * UDID 页面样式 — 与 MultiSpace 官网风格统一
 */

/* ===== Google Fonts ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===== CSS Custom Properties ===== */
:root {
  --color-primary: #0071e3;
  --color-primary-hover: #0077ed;
  --color-primary-light: rgba(0, 113, 227, 0.08);
  --color-dark: #1d1d1f;
  --color-gray: #86868b;
  --color-light-gray: #f5f5f7;
  --color-white: #ffffff;
  --color-border: rgba(0, 0, 0, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.18);
  --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.12);
  --gradient-primary: linear-gradient(135deg, #0071e3 0%, #00c6fb 100%);
  --gradient-hero: linear-gradient(180deg, #f5f5f7 0%, #ffffff 100%);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  color: var(--color-dark);
  background: var(--gradient-hero);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-dark);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  font-weight: 800;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-link {
  color: var(--color-gray);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* ===== Language Switcher ===== */
#lang-switcher {
  position: relative;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-light-gray);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-dark);
  cursor: pointer;
  transition: var(--transition-smooth);
  font-family: var(--font-family);
}

.lang-toggle:hover {
  background: white;
  box-shadow: var(--shadow-card);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: white;
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--color-border);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition-smooth);
  min-width: 160px;
  z-index: 200;
}

.lang-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  padding: 10px 16px;
  border: none;
  background: none;
  text-align: left;
  font-size: 14px;
  color: var(--color-dark);
  cursor: pointer;
  transition: background 0.15s;
  font-family: var(--font-family);
}

.lang-option:hover {
  background: var(--color-light-gray);
}

.lang-option.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== Main Content ===== */
.main {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

/* ===== Hero Card ===== */
.hero-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 48px 32px;
  text-align: center;
  box-shadow: var(--shadow-card);
  margin-top: 24px;
}

.phone-icon {
  width: 100px;
  height: 140px;
  margin: 0 auto 28px;
}

.phone-icon svg {
  width: 100%;
  height: 100%;
}

.hero-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 980px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  -webkit-tap-highlight-color: transparent;
  font-family: var(--font-family);
  letter-spacing: -0.01em;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 113, 227, 0.3);
}

.btn-primary:active {
  transform: scale(0.98);
}

/* ===== Steps ===== */
.steps-wrapper {
  margin-top: 32px;
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.step-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.step-screenshot {
  background: var(--color-light-gray);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 16px;
}

.screenshot-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 12px;
}

.screenshot-back {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 500;
}

.screenshot-title {
  font-size: 16px;
  font-weight: 600;
}

.screenshot-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: white;
  border-radius: 10px;
  font-size: 14px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.screenshot-arrow {
  color: var(--color-gray);
}

.install-screenshot {
  display: flex;
  justify-content: center;
}

.install-header {
  display: flex;
  align-items: center;
  gap: 14px;
  background: white;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}

.install-icon {
  font-size: 36px;
}

.install-info {
  display: flex;
  flex-direction: column;
}

.install-info strong {
  font-size: 15px;
  font-weight: 600;
}

.install-org {
  font-size: 12px;
  color: var(--color-gray);
  margin-top: 2px;
}

.install-btn {
  background: var(--color-primary);
  color: white;
  padding: 6px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-left: auto;
}

.step-desc {
  font-size: 14px;
  color: var(--color-gray);
  text-align: center;
  line-height: 1.8;
}

.step-desc strong {
  color: var(--color-dark);
}

/* ===== Info Section ===== */
.info-section {
  margin-top: 32px;
}

.info-block {
  background: white;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.info-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.info-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* ===== PC Section ===== */
.pc-section {
  display: none;
}

.mobile-section {
  display: block;
}

.pc-hero {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 56px 40px;
  text-align: center;
  margin-top: 32px;
  box-shadow: var(--shadow-card);
}

.pc-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.pc-subtitle {
  font-size: 16px;
  color: var(--color-gray);
  margin-bottom: 40px;
  line-height: 1.6;
}

.pc-subtitle .highlight {
  color: var(--color-primary);
  font-weight: 600;
}

.pc-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
}

.devices-icon {
  width: 200px;
  height: 160px;
}

.devices-icon svg {
  width: 100%;
  height: 100%;
}

.qrcode-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qrcode-wrapper canvas {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px;
  background: white;
}

.qrcode-hint {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-gray);
}

.pc-divider {
  height: 1px;
  background: var(--color-border);
  margin: 40px 0;
}

.pc-info {
  padding: 8px 0;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-dark);
  color: var(--color-gray);
  padding: 32px 20px;
  text-align: center;
}

.footer-inner {
  max-width: 800px;
  margin: 0 auto;
}

.footer p {
  font-size: 13px;
}

/* ===== Result Page ===== */
.container {
  max-width: 800px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Loading */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading p {
  margin-top: 20px;
  color: var(--color-gray);
  font-size: 15px;
}

.hidden {
  display: none !important;
}

/* Error */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 80px 20px;
  text-align: center;
}

.error-icon {
  width: 72px;
  height: 72px;
  color: #ff3b30;
  margin-bottom: 20px;
}

.error-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.error-message {
  color: var(--color-gray);
  margin-bottom: 28px;
  font-size: 15px;
}

/* Success */
.result-state {
  padding: 32px 20px;
}

.success-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 28px;
}

.success-icon {
  width: 60px;
  height: 60px;
  color: #34C759;
  margin-bottom: 14px;
}

.success-title {
  font-size: 22px;
  font-weight: 700;
}

/* Device Card */
.device-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
}

.device-info {
  padding: 0;
}

.info-row {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.info-row:last-child {
  border-bottom: none;
}

.info-row.highlight {
  background: var(--color-primary-light);
}

.info-label {
  font-size: 13px;
  color: var(--color-gray);
  min-width: 84px;
  font-weight: 500;
}

.info-value {
  flex: 1;
  font-size: 14px;
  font-weight: 600;
  word-break: break-all;
  color: var(--color-dark);
}

.copy-btn {
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--color-gray);
  transition: color 0.2s;
  border-radius: 8px;
}

.copy-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.copy-btn svg {
  width: 18px;
  height: 18px;
}

/* Secondary Button */
.btn-secondary {
  display: block;
  text-align: center;
  background: var(--color-light-gray);
  color: var(--color-dark);
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition-smooth);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: white;
  box-shadow: var(--shadow-card);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(29, 29, 31, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: white;
  padding: 12px 28px;
  border-radius: 980px;
  font-size: 14px;
  font-weight: 500;
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, 10px);
  }

  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* MultiSpace QR Section */
.multispace-section {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
  text-align: center;
}

.multispace-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 20px;
}

.multispace-qrcode-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.multispace-qrcode {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  background: white;
  box-shadow: var(--shadow-card);
}

.btn-save-qrcode {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 980px;
  cursor: pointer;
  transition: var(--transition-smooth);
  margin-top: 20px;
  -webkit-tap-highlight-color: transparent;
  font-family: var(--font-family);
}

.btn-save-qrcode:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 113, 227, 0.3);
}

.btn-save-qrcode:active {
  transform: scale(0.98);
}

.btn-save-qrcode svg {
  width: 18px;
  height: 18px;
}

#screenshot-capture-area {
  background: transparent;
}

.save-date {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-gray);
  text-align: center;
}

.save-btn-container {
  text-align: center;
  margin-bottom: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
  .hero-card {
    padding: 36px 20px;
  }

  .phone-icon {
    width: 80px;
    height: 112px;
  }

  .hero-title {
    font-size: 20px;
  }

  .btn-primary {
    width: 100%;
    padding: 14px 24px;
  }
}

@media (min-width: 768px) {
  .pc-hero {
    padding: 64px 56px;
  }

  .pc-title {
    font-size: 42px;
  }

  .pc-subtitle {
    font-size: 17px;
  }
}