/* Spout — 全局样式（移动端优先 + 暗色主题） */

:root {
  --bg: #0f0f1a;
  --card-bg: #1a1a2e;
  --card-border: #2a2a3e;
  --primary: #f7971e;
  --primary-hover: #e08810;
  --text: #e8e8f0;
  --text-muted: #8888a0;
  --text-dim: #55556a;
  --green: #22c55e;
  --blue: #3b82f6;
  --gray: #6b7280;
  --danger: #ef4444;
  --radius: 12px;
  --max-w: 600px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

/* 主容器 — 移动端优先居中 */
.app-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 16px;
  min-height: 100vh;
}

/* 顶部栏 */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 16px;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
}

.nav-links a {
  color: var(--text-muted);
  padding: 4px 8px;
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: rgba(247, 151, 30, 0.1);
  text-decoration: none;
}

/* 卡片 */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

/* 帖子卡片 */
.post-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  transition: border-color 0.2s;
}

.post-card:hover {
  border-color: var(--primary);
}

.post-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-user {
  font-weight: 600;
  font-size: 0.9rem;
}

.post-time {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-left: auto;
}

.post-content {
  margin-bottom: 10px;
  word-break: break-word;
  font-size: 0.95rem;
  line-height: 1.6;
}

.post-images {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
}

.post-images img {
  width: 100%;
  border-radius: 8px;
  max-height: 300px;
  object-fit: cover;
  background: var(--card-border);
}

/* AI 标签 */
.ai-label {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ai-label.ai {
  background: rgba(34, 197, 94, 0.15);
  color: var(--green);
}

.ai-label.ai_assisted {
  background: rgba(59, 130, 246, 0.15);
  color: var(--blue);
}

.ai-label.human {
  background: rgba(107, 114, 128, 0.2);
  color: var(--gray);
}

/* 互动栏 */
.post-actions {
  display: flex;
  gap: 20px;
  padding-top: 10px;
  border-top: 1px solid var(--card-border);
  margin-top: 10px;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
  transition: all 0.2s;
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.action-btn.active {
  color: var(--primary);
}

/* 表单 */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

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

textarea.form-input {
  min-height: 120px;
  resize: vertical;
  font-family: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

.btn-secondary {
  background: var(--card-border);
  color: var(--text);
}

.btn-secondary:hover {
  background: #3a3a4e;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 辅助 */
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.85rem; }

/* 加载中 */
.loading {
  text-align: center;
  padding: 40px 0;
  color: var(--text-muted);
}

/* 上传加载动画 */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--card-border, #ddd);
  border-top-color: var(--primary, #4a6cf7);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Toast 提示 */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  z-index: 999;
  animation: toast-in 0.3s ease;
  max-width: calc(100% - 40px);
}

.toast.error {
  border-color: var(--danger);
  color: var(--danger);
}

.toast.success {
  border-color: var(--green);
  color: var(--green);
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* 页面过渡 */
.page {
  animation: fade-in 0.2s ease;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}