/* 相册网站样式 */
/* 设计系统：Flat Design，画廊风格 */

/* 字体 */
@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* CSS 变量 */
:root {
  --color-bg: #FAFAFA;
  --color-primary: #17171C;
  --color-white: #FFFFFF;
  --color-input-bg: #E8EEF2;
  --color-sidebar-text: #A6B5CC;
  --color-text: #17171C;
  --color-text-secondary: #A6B5CC;
  
  --font-heading: 'Archivo', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;
  
  --radius: 0px; /* Flat design - no border radius */
}

/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

/* ========== 登录页 ========== */
.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: var(--color-bg);
}

.login-card {
  width: 500px;
  background: var(--color-white);
  padding: 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.login-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 32px;
  color: var(--color-text);
}

.login-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 8px;
}

.login-input {
  width: 100%;
  height: 48px;
  background: var(--color-input-bg);
  border: none;
  padding: 0 16px;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-text);
}

.login-input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.login-button {
  width: 100%;
  height: 56px;
  background: var(--color-primary);
  border: none;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  margin-top: 16px;
}

.login-button:hover {
  opacity: 0.9;
}

.login-button:active {
  opacity: 0.8;
}

/* ========== 相册页 ========== */
.gallery-page {
  min-height: 100vh;
  background: var(--color-bg);
}

.gallery-header {
  width: 100%;
  height: 64px;
  background: var(--color-white);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.gallery-header-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 24px;
  color: var(--color-text);
}

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

.gallery-content {
  padding: 48px;
}

.section-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 20px;
  color: var(--color-text);
  margin-bottom: 24px;
}

.album-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
}

.album-card {
  background: var(--color-white);
  cursor: pointer;
  transition: transform 0.2s;
}

.album-card:hover {
  transform: translateY(-4px);
}

.album-card-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  background: var(--color-input-bg);
}

.album-card-title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 18px;
  color: var(--color-text);
  padding: 16px;
}

/* ========== 后台管理页 ========== */
.admin-page {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 240px;
  background: var(--color-primary);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 100vh;
}

.sidebar-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  color: var(--color-white);
  margin-bottom: 24px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav-item {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  color: var(--color-sidebar-text);
  padding: 12px 0;
  cursor: pointer;
  transition: color 0.2s;
}

.nav-item:hover,
.nav-item.active {
  color: var(--color-white);
}

.admin-main {
  flex: 1;
  background: var(--color-bg);
  padding: 48px;
}

.page-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 32px;
  color: var(--color-text);
  margin-bottom: 32px;
}

.stats-row {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  flex: 1;
  background: var(--color-white);
  padding: 24px;
  min-width: 0;
}

.stat-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.stat-value {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 32px;
  color: var(--color-text);
}

/* 按钮 */
.btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  padding: 8px 16px;
  border: none;
  cursor: pointer;
  background: var(--color-primary);
  color: var(--color-white);
}

.btn:hover {
  opacity: 0.9;
}

/* 响应式 */
@media (max-width: 768px) {
  .album-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-row {
    flex-direction: column;
  }
  
  .admin-sidebar {
    width: 200px;
  }
}