/* ── rui.css: 锐评页面样式 ────────────────────────────────────────────────
   风格：和主页区分，大胆、锐利、橙色强调
   与主页的青/金色系形成对比 ─────────────────────────────────────────── */

:root {
  --rui-accent: #ff6b35;       /* 锐橙，主强调色 */
  --rui-accent-dim: #ff6b3540; /* 半透明橙 */
  --rui-accent-glow: #ff6b3520;
  --rui-bg: #0a0a0f;
  --rui-surface: #111118;
  --rui-border: rgba(255, 107, 53, 0.18);
  --rui-text: #f0ebe0;
  --rui-text-dim: #8a8075;
}

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

body {
  min-height: 100vh;
  font-family: "Space Grotesk", "Helvetica Neue", sans-serif;
  background: var(--rui-bg);
  color: var(--rui-text);
  line-height: 1.65;
  overflow-x: hidden;
}

/* 背景效果 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 107, 53, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(255, 107, 53, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* 顶部扫描线 */
.scan-line {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--rui-accent), rgba(255,200,100,0.7), transparent);
  box-shadow: 0 0 18px var(--rui-accent);
  animation: scan 8s linear infinite;
  opacity: 0.6;
  pointer-events: none;
  z-index: 10;
}
@keyframes scan {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* 容器 */
.container {
  width: min(860px, calc(100% - 2rem));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* 页面头部 */
.page-header {
  padding: 3rem 0 1.5rem;
  text-align: center;
}

.page-title {
  font-family: "Orbitron", "Arial Black", sans-serif;
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--rui-accent), #ffaa66, #fff3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(0 0 30px var(--rui-accent-dim));
}

.page-subtitle {
  color: var(--rui-text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

/* 分割线 */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rui-border), transparent);
  margin: 2rem 0;
}

/* 输入区域 */
.input-section {
  background: var(--rui-surface);
  border: 1px solid var(--rui-border);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 0 40px var(--rui-accent-glow);
}

.input-label {
  display: block;
  color: var(--rui-accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

textarea {
  width: 100%;
  min-height: 140px;
  background: rgba(255, 107, 53, 0.04);
  border: 1px solid var(--rui-border);
  border-radius: 12px;
  padding: 1rem;
  color: var(--rui-text);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  line-height: 1.7;
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
textarea:focus {
  outline: none;
  border-color: var(--rui-accent);
  box-shadow: 0 0 0 3px var(--rui-accent-dim);
}
textarea::placeholder {
  color: var(--rui-text-dim);
  opacity: 0.6;
}

/* 角度标签 */
.angle-section {
  margin-top: 1.2rem;
}
.angle-label {
  color: var(--rui-text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  display: block;
}
.angle-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.angle-tag {
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--rui-border);
  background: transparent;
  color: var(--rui-text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}
.angle-tag:hover {
  border-color: var(--rui-accent);
  color: var(--rui-accent);
}
.angle-tag.selected {
  background: var(--rui-accent-dim);
  border-color: var(--rui-accent);
  color: var(--rui-accent);
}

/* 提交按钮 */
.submit-btn {
  width: 100%;
  min-height: 52px;
  margin-top: 1.5rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--rui-accent), #ff8c5a);
  color: #fff;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 0 30px var(--rui-accent-dim);
  position: relative;
  overflow: hidden;
}
.submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 0 50px var(--rui-accent-dim);
}
.submit-btn:active:not(:disabled) {
  transform: translateY(0);
}
.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 加载动画 */
.submit-btn.loading::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* 锐评输出区 */
.output-section {
  margin-top: 2rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s, transform 0.4s;
}
.output-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.output-card {
  background: var(--rui-surface);
  border: 1px solid var(--rui-border);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.output-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--rui-accent), #ffaa66, transparent);
}

.output-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: var(--rui-accent-dim);
  border: 1px solid var(--rui-accent);
  color: var(--rui-accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.output-text {
  color: var(--rui-text);
  font-size: 1.05rem;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-word;
}

.output-text.error {
  color: #ff6b6b;
}

/* 底部操作按钮 */
.output-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.action-btn {
  flex: 1;
  min-width: 120px;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--rui-border);
  background: transparent;
  color: var(--rui-text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}
.action-btn:hover {
  border-color: var(--rui-accent);
  color: var(--rui-accent);
  background: var(--rui-accent-glow);
}

/* 提示信息 */
.hint-text {
  text-align: center;
  color: var(--rui-text-dim);
  font-size: 0.78rem;
  margin-top: 1rem;
  font-family: "JetBrains Mono", monospace;
}

/* Toast 提示 */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--rui-surface);
  border: 1px solid var(--rui-border);
  border-radius: 999px;
  padding: 0.6rem 1.2rem;
  color: var(--rui-text);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 100;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.success { border-color: #4ade80; color: #4ade80; }
.toast.error   { border-color: #f87171; color: #f87171; }

.char-counter {
  text-align: right;
  font-family: var(--font-mono, monospace);
  font-size: 0.72rem;
  color: #555;
  margin-top: 4px;
}