/* ============================================================
   赛博朋克主题 - 全局样式 / 设计令牌
   企业网页前端英语点读学习网
   ============================================================ */

:root {
  /* 主色（霓虹蓝） */
  --neon: #4d9fff;
  --neon-2: #6ab8ff;
  --neon-glow: rgba(77, 159, 255, 0.55);

  /* 紫色（AI / 测评 / 标题渐变） */
  --purple: #9b6cff;
  --purple-2: #7c5cff;
  --purple-glow: rgba(155, 108, 255, 0.55);

  /* 强调色 */
  --magenta: #ff2fb9;         /* 录音状态 */
  --amber: #ffd23f;
  --green: #39ff8f;           /* 测评分数 */
  --red: #ff4d6d;             /* 退出登录 */

  /* 中性 */
  --bg: #070b1e;
  --bg-2: #0b1130;
  --panel: rgba(18, 26, 54, 0.72);
  --panel-solid: #101838;
  --border: rgba(77, 159, 255, 0.22);
  --border-soft: rgba(140, 160, 220, 0.16);
  --text: #e8f0ff;
  --text-dim: #8ea0c8;
  --text-faint: #566486;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow-neon: 0 0 20px var(--neon-glow), 0 0 40px rgba(77, 159, 255, 0.15);

  --font-display: "Orbitron", "Segoe UI", system-ui, sans-serif;
  --font-body: "Rajdhani", "Segoe UI", system-ui, sans-serif;

  /* 兼容别名（供各模块样式引用，统一到新蓝/紫配色） */
  --muted: var(--text-dim);
  --neon-green: var(--green);
  --neon-yellow: var(--amber);
  --text-glow: 0 0 12px var(--neon-glow);
  --font-mono: "Rajdhani", "Segoe UI", ui-monospace, monospace;
}

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

html { background: var(--bg); scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(77, 159, 255, 0.12), transparent 60%),
    radial-gradient(900px 600px at 0% 100%, rgba(155, 108, 255, 0.10), transparent 55%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

/* 粒子背景画布 */
#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* 网格扫描线叠加 */
.scanlines::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 3px;
  mix-blend-mode: overlay;
}

.app { position: relative; z-index: 2; }

/* ---------- 文本工具 ---------- */
.font-display { font-family: var(--font-display); }
.neon-text {
  color: var(--neon);
  text-shadow: 0 0 8px var(--neon-glow), 0 0 22px rgba(0, 240, 255, 0.35);
}
.magenta-text { color: var(--magenta); text-shadow: 0 0 10px rgba(255, 47, 185, 0.5); }
.purple-text { color: var(--purple); text-shadow: 0 0 10px var(--purple-glow); }
.green-text { color: var(--green); text-shadow: 0 0 14px rgba(57, 255, 143, 0.5); }
.gradient-text {
  background: linear-gradient(100deg, var(--purple) 0%, var(--neon) 55%, var(--neon-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 18px rgba(77, 159, 255, 0.35));
}
.dim { color: var(--text-dim); }
.faint { color: var(--text-faint); }
.mono { font-family: "Consolas", "Courier New", monospace; letter-spacing: 0.12em; }

/* ---------- 玻璃面板 ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 20px 50px rgba(0, 0, 0, 0.5);
}

/* ---------- 按钮 ---------- */
.btn {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 14px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(0, 240, 255, 0.06);
  color: var(--neon);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-neon); background: rgba(0, 240, 255, 0.12); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(135deg, var(--neon), var(--neon-2));
  color: #04121a;
  border-color: transparent;
  box-shadow: 0 0 18px var(--neon-glow);
}
.btn-primary:hover { box-shadow: 0 0 30px var(--neon-glow); }
.btn-magenta { color: var(--magenta); border-color: rgba(255, 47, 185, 0.4); background: rgba(255, 47, 185, 0.08); }
.btn-magenta:hover { box-shadow: 0 0 22px rgba(255, 47, 185, 0.5); background: rgba(255, 47, 185, 0.16); }
.btn-purple { color: var(--purple); border-color: rgba(155, 108, 255, 0.45); background: rgba(155, 108, 255, 0.10); }
.btn-purple:hover { box-shadow: 0 0 22px var(--purple-glow); background: rgba(155, 108, 255, 0.18); }
.btn-red { color: var(--red); border-color: rgba(255, 77, 109, 0.5); background: rgba(255, 77, 109, 0.10); }
.btn-red:hover { box-shadow: 0 0 20px rgba(255, 77, 109, 0.45); background: rgba(255, 77, 109, 0.2); }
.btn-ghost { background: transparent; border-color: var(--border-soft); color: var(--text-dim); }
.btn-ghost:hover { color: var(--text); box-shadow: none; background: rgba(255, 255, 255, 0.04); }
.btn-lg { padding: 16px 30px; font-size: 16px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
  font-family: var(--font-display);
}
.input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(5, 10, 24, 0.7);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}
.input:focus { outline: none; border-color: var(--neon); box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15); }
.input::placeholder { color: var(--text-faint); }

/* ---------- 徽标块 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--neon);
  background: rgba(0, 240, 255, 0.05);
}

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: center;   /* 内部 .topbar-inner 居中 */
  padding: 0 32px;
  border-bottom: 1px solid var(--border-soft);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 7, 15, 0.82);
  box-shadow: 0 1px 0 rgba(77, 159, 255, 0.08), 0 4px 20px rgba(0,0,0,0.3);
}
/* 顶栏内容约束在 1200px 之内 */
.topbar-inner {
  width: 100%;
  max-width: 1200px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 12px;
}
/* 顶栏右侧用户区域不换行 */
#topbar-user {
  flex-shrink: 0;
  white-space: nowrap;
}
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 700; min-width: 0; flex-shrink: 0; }
.brand .logo {
  width: 40px; height: 40px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--neon), var(--neon-2));
  color: #04121a; font-size: 21px; box-shadow: 0 0 18px var(--neon-glow);
  font-weight: 900;
}
.brand .name { font-size: 18px; letter-spacing: 0.05em; }
.brand .name span { color: var(--neon); }
.topbar-avatar {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(155, 108, 255, 0.15); border: 1px solid rgba(155, 108, 255, 0.4); color: var(--purple);
}

/* ---------- 网格布局 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.container-narrow { max-width: 860px; margin: 0 auto; padding: 0 32px; }
.grid { display: grid; gap: 20px; }

/* ---------- 徽章/进度 ---------- */
.progress { height: 8px; border-radius: 999px; background: rgba(255,255,255,0.06); overflow: hidden; }
.progress > i { display: block; height: 100%; background: linear-gradient(90deg, var(--neon), var(--neon-2)); box-shadow: 0 0 10px var(--neon-glow); border-radius: 999px; }

/* ---------- 通用动画 ---------- */
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes pulseNeon { 0%,100% { box-shadow: 0 0 12px var(--neon-glow); } 50% { box-shadow: 0 0 28px var(--neon-glow); } }
@keyframes flicker { 0%,19%,21%,23%,100% { opacity: 1; } 20%,22% { opacity: 0.55; } }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: rgba(0, 240, 255, 0.3); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--neon); }

/* ---------- Toast ---------- */
#toast-wrap { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.toast {
  padding: 12px 20px; border-radius: 10px; font-family: var(--font-display); font-size: 14px;
  border: 1px solid var(--border); background: var(--panel-solid); color: var(--text);
  box-shadow: var(--shadow-neon); animation: float 0.3s ease;
}
.toast.err { border-color: rgba(255,47,185,0.5); color: var(--magenta); box-shadow: 0 0 18px rgba(255,47,185,0.4); }
.toast.ok { border-color: var(--border); color: var(--neon); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .container-narrow { padding: 0 24px; }
  .topbar { padding: 0 24px; }
}
@media (max-width: 720px) {
  .container { padding: 0 16px; }
  .container-narrow { padding: 0 16px; }
  .topbar { padding: 0 16px; }
  .topbar-inner { padding: 12px 0; gap: 8px; }
  .brand .name { font-size: 15px; }
  .brand .logo { width: 34px; height: 34px; font-size: 18px; }
  /* 顶栏按钮在小屏上精简 */
  .topbar .btn { padding: 9px 14px; font-size: 12px; }
  .topbar .topbar-avatar { width: 28px; height: 28px; font-size: 12px; }
}