/* 现代化登录页面样式 - 丽江市文旅竞标系统 */

:root {
  /* 主色调 */
  --primary-color: #4361ee;
  --primary-dark: #3a56d4;
  --primary-light: #4895ef;
  --secondary-color: #4cc9f0;
  
  /* 中性色 */
  --white: #ffffff;
  --off-white: #f8fafc;
  --light-gray: #e2e8f0;
  --gray: #94a3b8;
  --dark-gray: #475569;
  --black: #1e293b;
  
  /* 功能色 */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  
  /* 圆角 */
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* 动画 */
  --transition: all 0.3s ease;
  --transition-slow: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--black);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--off-white);
}

/* 背景 */
.login-background {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
}

.login-background-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(67, 97, 238, 0.8) 0%, rgba(76, 201, 240, 0.7) 100%);
  z-index: 1;
}

.login-background-shapes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.shape {
  position: absolute;
  border-radius: 50%;
}

.shape-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(76, 201, 240, 0.3) 0%, rgba(76, 201, 240, 0) 70%);
  top: -200px;
  right: -100px;
  animation: float 20s infinite alternate ease-in-out;
}

.shape-2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(67, 97, 238, 0.3) 0%, rgba(67, 97, 238, 0) 70%);
  bottom: -100px;
  left: -50px;
  animation: float 15s infinite alternate-reverse ease-in-out;
}

.shape-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(58, 86, 212, 0.2) 0%, rgba(58, 86, 212, 0) 70%);
  top: 40%;
  left: 30%;
  animation: float 25s infinite alternate ease-in-out;
}

@keyframes float {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(20px, -20px) scale(1.05);
  }
  100% {
    transform: translate(-20px, 20px) scale(0.95);
  }
}

/* 登录容器 */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 2rem;
}

.login-card {
  width: 100%;
  max-width: 480px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 3rem;
  position: relative;
  overflow: hidden;
  animation: cardAppear 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cardAppear {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.company-card {
  border-top: 5px solid var(--primary-color);
}

/* 登录头部 */
.login-header {
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
}

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.logo-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(45deg);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% {
    transform: rotate(45deg) translateX(-100%);
  }
  20%, 100% {
    transform: rotate(45deg) translateX(100%);
  }
}

.login-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.login-subtitle {
  font-size: 1rem;
  color: var(--dark-gray);
  font-weight: 400;
}

/* 警告框 */
.alert {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  font-size: 0.9rem;
  animation: alertAppear 0.3s ease;
}

@keyframes alertAppear {
  0% {
    opacity: 0;
    transform: translateY(-10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert-icon {
  flex-shrink: 0;
}

/* 表单 */
.login-form {
  position: relative;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dark-gray);
}

.input-wrapper {
  position: relative;
  transition: var(--transition);
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray);
  transition: var(--transition);
  z-index: 1;
}

.form-control {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  font-size: 1rem;
  border: 1px solid var(--light-gray);
  border-radius: var(--radius-md);
  background-color: var(--white);
  color: var(--black);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

.input-wrapper.focused {
  transform: translateY(-2px);
}

.input-wrapper.focused .input-icon {
  color: var(--primary-color);
}

/* 表单选项 */
.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: relative;
  height: 18px;
  width: 18px;
  background-color: var(--white);
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-sm);
  margin-right: 0.5rem;
  transition: var(--transition);
}

.checkbox-label:hover .checkmark {
  border-color: var(--primary-color);
}

.checkbox-label input:checked ~ .checkmark {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-label input:checked ~ .checkmark:after {
  display: block;
}

.checkbox-text {
  font-size: 0.9rem;
  color: var(--dark-gray);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--white);
  box-shadow: 0 4px 10px rgba(67, 97, 238, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(67, 97, 238, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 5px rgba(67, 97, 238, 0.3);
}

.btn-full {
  width: 100%;
  padding: 1rem;
}

.btn-text {
  position: relative;
  z-index: 1;
}

.btn::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(45deg);
  transition: all 0.8s;
  opacity: 0;
}

.btn:hover::after {
  opacity: 1;
  transform: rotate(45deg) translateX(100%);
}

/* 加载状态 */
.btn-loading {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: inherit;
  border-radius: inherit;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.btn.loading .btn-text {
  visibility: hidden;
}

.btn.loading .btn-loading {
  display: flex;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* 页脚 */
.login-footer {
  margin-top: 2rem;
}

.login-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.link-secondary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--dark-gray);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.link-secondary:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.login-help {
  text-align: center;
}

.text-muted {
  color: var(--gray);
  font-size: 0.85rem;
}

/* 字段错误 */
.field-error {
  color: var(--danger);
  font-size: 0.8rem;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  animation: errorAppear 0.3s ease;
}

@keyframes errorAppear {
  0% {
    opacity: 0;
    transform: translateY(-5px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 响应式设计 */
@media (max-width: 640px) {
  .login-container {
    padding: 1rem;
  }
  
  .login-card {
    padding: 2rem;
    border-radius: var(--radius);
  }
  
  .login-title {
    font-size: 1.75rem;
  }
  
  .logo-icon {
    width: 70px;
    height: 70px;
  }
}

/* 暗黑模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --white: #1e293b;
    --off-white: #0f172a;
    --light-gray: #334155;
    --gray: #64748b;
    --dark-gray: #94a3b8;
    --black: #f8fafc;
  }
  
  .login-card {
    background: rgba(30, 41, 59, 0.8);
  }
  
  .form-control {
    background-color: rgba(15, 23, 42, 0.8);
  }
  
  .alert {
    background-color: rgba(239, 68, 68, 0.2);
  }
}

/* 额外美化效果 */
.form-control::placeholder {
  color: var(--gray);
  opacity: 0.7;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
  pointer-events: none;
}

/* 3D卡片效果 */
.login-card {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.card-3d-effect {
  transform: rotateX(var(--rotateX)) rotateY(var(--rotateY));
  transition: transform 0.1s ease;
}