/* 广州格雷特软件 - 企业网站样式 */

:root {
  /* 主色调 */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  
  /* 强调色 */
  --accent: #06b6d4;
  
  /* 中性色 */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* 功能色 */
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  
  /* 背景 */
  --bg-light: #ffffff;
  --bg-dark: #0f172a;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* 过渡 */
  --transition-fast: 150ms;
  --transition: 200ms;
  --transition-slow: 300ms;
}

/* 重置与基础样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--bg-light);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: var(--primary-dark);
}

/* 头部导航 */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--gray-900);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.125rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 8px 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-buttons {
  display: flex;
  gap: 12px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.05);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* 主内容区域 */
.main {
  flex: 1;
  padding-top: 72px;
}

/* 英雄区域 */
.hero {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0fdfa 100%);
  padding: 100px 24px 120px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: white;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--gray-900);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 服务区域 */
.services {
  padding: 100px 24px;
  background: white;
}

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.service-card {
  background: var(--gray-50);
  padding: 32px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}

.service-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: white;
}

.service-icon svg {
  width: 28px;
  height: 28px;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.service-card p {
  color: var(--gray-600);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* 关于区域 */
.about {
  padding: 100px 24px;
  background: var(--gray-50);
}

.about-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image-main {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 6rem;
  font-weight: 800;
  opacity: 0.9;
}

.about-image-decoration {
  position: absolute;
  width: 200px;
  height: 200px;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  bottom: -30px;
  right: -30px;
  padding: 24px;
}

.about-image-decoration .number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.about-image-decoration .label {
  color: var(--gray-600);
  font-size: 0.875rem;
  margin-top: 4px;
}

.about-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.about-content p {
  color: var(--gray-600);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gray-700);
  font-weight: 500;
}

.about-feature-icon {
  width: 24px;
  height: 24px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--success);
}

.about-feature-icon svg {
  width: 14px;
  height: 14px;
}

/* 页面容器 */
.page-container {
  min-height: calc(100vh - 72px - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

/* 表单卡片 */
.form-card {
  background: white;
  padding: 48px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
}

.form-header {
  text-align: center;
  margin-bottom: 32px;
}

.form-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.form-header p {
  color: var(--gray-500);
  font-size: 0.9375rem;
}

.form-header .logo-small {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--gray-900);
  margin-bottom: 24px;
}

.form-header .logo-small-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1rem;
}

/* 表单样式 */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  color: var(--gray-800);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  background: white;
}

.form-input::placeholder {
  color: var(--gray-400);
}

.form-input.error {
  border-color: var(--error);
}

.form-error {
  color: var(--error);
  font-size: 0.8125rem;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.form-row .btn {
  height: 48px;
  white-space: nowrap;
}

/* 数字字母验证码 */
.captcha-container {
  margin-bottom: 24px;
}

.captcha-wrapper {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
}

.captcha-header {
  padding: 12px 16px;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--gray-600);
}

.captcha-refresh {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8125rem;
}

.captcha-refresh:hover {
  color: var(--primary-dark);
}

.captcha-refresh svg {
  width: 16px;
  height: 16px;
}

.captcha-code-area {
  padding: 20px;
  background: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.captcha-code-display {
  display: flex;
  gap: 12px;
  padding: 16px 24px;
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
  border-radius: var(--radius);
  border: 1px dashed var(--gray-300);
}

.captcha-char {
  font-size: 2rem;
  font-weight: 800;
  font-family: 'Courier New', monospace;
  letter-spacing: 8px;
  text-transform: uppercase;
  user-select: none;
}

.captcha-code-hint {
  font-size: 0.8125rem;
  color: var(--gray-600);
}

.captcha-input-container {
  padding: 16px;
  background: white;
  border-top: 1px solid var(--gray-200);
}

.captcha-input {
  text-transform: uppercase;
  letter-spacing: 4px;
  font-family: 'Courier New', monospace;
  font-size: 1.25rem;
  text-align: center;
}

.captcha-input.success {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

.captcha-input.error {
  border-color: var(--error);
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.captcha-message {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  display: none;
  align-items: center;
  gap: 8px;
}

.captcha-message.show {
  display: flex;
}

.captcha-message.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.captcha-message.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
}

.captcha-message svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* 协议链接 */
.form-agreement {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 24px;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.form-agreement input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--primary);
}

.form-agreement a {
  color: var(--primary);
}

.form-agreement a:hover {
  text-decoration: underline;
}

/* 表单页脚 */
.form-footer {
  text-align: center;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-200);
  font-size: 0.9375rem;
  color: var(--gray-600);
}

.form-footer a {
  font-weight: 500;
}

/* 成功消息 */
.alert {
  padding: 14px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* 页脚 */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 48px 24px 24px;
}

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

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: white;
  margin-bottom: 16px;
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
}

.footer-section h4 {
  color: white;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--gray-400);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--gray-800);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.875rem;
}

.footer-bottom a {
  color: var(--gray-400);
  font-size: 0.875rem;
}

.footer-bottom a:hover {
  color: white;
}

.footer-beian {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-beian svg {
  width: 18px;
  height: 18px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .about-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .about-image {
    order: -1;
  }
  
  .about-image-main {
    height: 300px;
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0 16px;
  }
  
  .nav {
    display: none;
  }
  
  .hero {
    padding: 80px 16px 100px;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero-description {
    font-size: 1.125rem;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .services {
    padding: 80px 16px;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .about {
    padding: 80px 16px;
  }
  
  .about-features {
    grid-template-columns: 1fr;
  }
  
  .form-card {
    padding: 32px 24px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* 动画 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

/* 隐藏元素 */
.hidden {
  display: none !important;
}

/* 加载状态 */
.loading {
  pointer-events: none;
  opacity: 0.7;
}

/* 禁用状态 */
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}