/* ============================================================
   夜判 OJ · 样式
   ============================================================ */

:root,
:root[data-theme="dark"] {
  --bg: #0d0f14;
  --bg-soft: #11141b;
  --panel: #151922;
  --panel-2: #1a1f2a;
  --border: #242a37;
  --border-soft: #1d222d;
  --text: #e6e9f2;
  --text-2: #a4adc2;
  --text-3: #6c7488;
  --accent: #6c7bff;
  --accent-2: #8b7bff;
  --accent-soft: rgba(108, 123, 255, 0.14);
  --green: #3ecf8e;
  --green-soft: rgba(62, 207, 142, 0.13);
  --red: #ff6b6b;
  --red-soft: rgba(255, 107, 107, 0.13);
  --amber: #f5a524;
  --amber-soft: rgba(245, 165, 36, 0.14);
  --blue: #4da3ff;
  --code-bg: #0a0c11;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

:root[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-soft: #eceff7;
  --panel: #ffffff;
  --panel-2: #f6f8fc;
  --border: #e2e6f0;
  --border-soft: #edf0f7;
  --text: #171c28;
  --text-2: #55607a;
  --text-3: #8a93a8;
  --accent: #5a63e8;
  --accent-2: #7a6be8;
  --accent-soft: rgba(90, 99, 232, 0.1);
  --green: #18a06a;
  --green-soft: rgba(24, 160, 106, 0.1);
  --red: #e04848;
  --red-soft: rgba(224, 72, 72, 0.09);
  --amber: #b87611;
  --amber-soft: rgba(184, 118, 17, 0.11);
  --blue: #2f7fd8;
  --code-bg: #fbfcfe;
  --shadow: 0 18px 45px rgba(28, 38, 66, 0.14);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }

/* ---------------- 顶栏 ---------------- */

.topbar {
  height: 58px;
  flex: 0 0 58px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 16px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border-soft);
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: -0.5px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 15px; letter-spacing: 0.5px; }
.brand-text small { color: var(--text-3); font-size: 10px; letter-spacing: 1.4px; text-transform: uppercase; }

.topnav { display: flex; gap: 4px; margin-left: 8px; }
.navbtn {
  padding: 7px 14px;
  border-radius: 9px;
  color: var(--text-2);
  font-size: 13.5px;
  transition: background 0.16s, color 0.16s;
}
.navbtn:hover { color: var(--text); background: var(--panel-2); }
.navbtn.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.user-chip {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 12px 5px 5px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-2);
  background: var(--panel);
  max-width: 190px;
  transition: border-color 0.16s, color 0.16s;
}
.user-chip:hover { border-color: var(--accent); color: var(--text); }
.avatar {
  width: 24px; height: 24px; flex: 0 0 24px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px; font-weight: 700;
}
.user-name { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.icon-btn {
  width: 32px; height: 32px;
  border-radius: 9px;
  display: grid; place-items: center;
  color: var(--text-2);
  font-size: 15px;
}
.icon-btn:hover { background: var(--panel-2); color: var(--text); }

/* ---------------- 工作区 ---------------- */

.workspace {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: 262px minmax(320px, 1fr) minmax(360px, 1.06fr);
  gap: 10px;
  padding: 10px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-head {
  flex: 0 0 auto;
  height: 44px;
  padding: 0 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-soft);
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: 0.4px;
}

.solved-badge {
  font-size: 11.5px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 8px;
  border-radius: 999px;
}

/* 题目列表 */

.problem-list { flex: 1 1 auto; overflow-y: auto; padding: 6px; }

.problem-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 10px;
  border-radius: 9px;
  cursor: pointer;
  color: var(--text-2);
  border: 1px solid transparent;
}
.problem-item:hover { background: var(--panel-2); color: var(--text); }
.problem-item.active {
  background: var(--accent-soft);
  border-color: rgba(108, 123, 255, 0.35);
  color: var(--text);
}
.problem-item .pi-id {
  font-size: 11px;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
  flex: 0 0 42px;
}
.problem-item .pi-title { flex: 1 1 auto; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.problem-item .pi-state { flex: 0 0 auto; font-size: 12px; color: var(--text-3); }
.problem-item.solved .pi-state { color: var(--green); }
.problem-item .pi-diff { width: 6px; height: 6px; border-radius: 50%; flex: 0 0 6px; background: var(--text-3); }
.pi-diff.d1 { background: var(--green); }
.pi-diff.d2 { background: var(--blue); }
.pi-diff.d3 { background: var(--amber); }

.panel-foot {
  flex: 0 0 auto;
  padding: 9px 12px;
  border-top: 1px solid var(--border-soft);
  font-size: 11.5px;
  color: var(--text-3);
}
.judge-status { display: flex; align-items: center; gap: 6px; }
.judge-status .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.judge-status.busy .dot { background: var(--amber); }
.judge-status.error .dot { background: var(--red); }
.foot-note { margin-top: 3px; font-size: 11px; color: var(--text-3); opacity: 0.8; }

/* ---------------- 题面 ---------------- */

.statement-head { height: auto; padding: 12px 18px; align-items: flex-start; gap: 10px; flex-wrap: wrap; }
.stmt-title { display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap; }
.stmt-title h1 { margin: 0; font-size: 17px; font-weight: 650; color: var(--text); letter-spacing: 0.2px; }
.pid { font-size: 12px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.stmt-meta { display: flex; gap: 6px; align-items: center; }

.chip {
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  white-space: nowrap;
}
.chip.ghost { background: var(--panel-2); color: var(--text-3); }

.statement {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 4px 20px 20px;
  font-size: 14px;
  color: var(--text-2);
}
.statement h4 {
  margin: 20px 0 8px;
  font-size: 13px;
  color: var(--text);
  letter-spacing: 0.4px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.statement h4::before {
  content: '';
  width: 3px; height: 13px;
  border-radius: 2px;
  background: var(--accent);
}
.statement p { margin: 8px 0; }
.statement code {
  font-family: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  font-size: 12.5px;
  background: var(--panel-2);
  border: 1px solid var(--border-soft);
  padding: 1px 5px;
  border-radius: 5px;
  color: var(--text);
}
.statement pre {
  margin: 10px 0;
  padding: 12px 14px;
  background: var(--code-bg);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  overflow-x: auto;
  font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text);
}
.statement pre code { background: none; border: none; padding: 0; font-size: inherit; }

.io-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 10px 0 4px;
}
.io-col { min-width: 0; }
.io-col span { font-size: 11.5px; color: var(--text-3); }
.io-col pre { margin: 5px 0 0; }

.statement-foot { flex: 0 0 auto; padding: 0 20px 14px; }
.link-btn {
  font-size: 12.5px;
  color: var(--accent);
  padding: 4px 0;
}
.link-btn:hover { text-decoration: underline; }
.hint-box {
  margin-top: 8px;
  padding: 10px 12px;
  font-size: 12.5px;
  color: var(--text-2);
  background: var(--amber-soft);
  border-radius: 9px;
  line-height: 1.65;
}

/* ---------------- 编辑器 ---------------- */

.code-panel { min-width: 0; }

.editor-toolbar {
  flex: 0 0 auto;
  height: 46px;
  padding: 0 10px 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-soft);
}
.lang-select {
  height: 30px;
  max-width: 200px;
  padding: 0 26px 0 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 12.5px;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-3) 50%),
                    linear-gradient(135deg, var(--text-3) 50%, transparent 50%);
  background-position: calc(100% - 13px) 13px, calc(100% - 8px) 13px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.lang-select:focus { outline: none; border-color: var(--accent); }

.toolbar-right { margin-left: auto; display: flex; align-items: center; gap: 6px; }

.ghost-btn {
  height: 30px;
  padding: 0 11px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 12.5px;
  white-space: nowrap;
}
.ghost-btn:hover { border-color: var(--accent); color: var(--text); }
.ghost-btn:disabled { opacity: 0.45; cursor: not-allowed; }

.submit-btn {
  height: 32px;
  padding: 0 16px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(108, 123, 255, 0.28);
  white-space: nowrap;
}
.submit-btn:hover { filter: brightness(1.06); }
.submit-btn:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; }

.editor-wrap {
  flex: 1 1 auto;
  min-height: 120px;
  display: flex;
  background: var(--code-bg);
  overflow: hidden;
  position: relative;
}

.gutter {
  flex: 0 0 46px;
  padding: 12px 8px 12px 0;
  text-align: right;
  color: var(--text-3);
  font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.62;
  user-select: none;
  overflow: hidden;
  opacity: 0.65;
  border-right: 1px solid var(--border-soft);
}

#code {
  flex: 1 1 auto;
  min-width: 0;
  padding: 12px 14px;
  border: none;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--text);
  font-family: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  font-size: 12.5px;
  line-height: 1.62;
  tab-size: 4;
  white-space: pre;
  overflow: auto;
}

/* ---------------- 判题结果 ---------------- */

.result-head {
  flex: 0 0 auto;
  min-height: 46px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-soft);
}
.verdict { display: flex; align-items: center; gap: 10px; min-width: 0; }
.verdict-badge {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.6px;
  padding: 3px 10px;
  border-radius: 7px;
  white-space: nowrap;
}
.verdict-badge.idle { background: var(--panel-2); color: var(--text-3); }
.verdict-badge.running { background: var(--accent-soft); color: var(--accent); }
.verdict-badge.ac { background: var(--green-soft); color: var(--green); }
.verdict-badge.wa { background: var(--red-soft); color: var(--red); }
.verdict-badge.tle { background: var(--amber-soft); color: var(--amber); }
.verdict-badge.ce { background: var(--amber-soft); color: var(--amber); }
.verdict-badge.re { background: var(--red-soft); color: var(--red); }
.verdict-badge.busy { background: var(--red-soft); color: var(--red); }
.verdict-detail { font-size: 12px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.result-meta { font-size: 11.5px; color: var(--text-3); white-space: nowrap; }

.result-body {
  flex: 0 0 38%;
  min-height: 96px;
  overflow-y: auto;
  padding: 10px 12px 14px;
}
.result-empty { font-size: 12.5px; color: var(--text-3); padding: 6px 2px; line-height: 1.7; }

.test-list { display: flex; flex-direction: column; gap: 6px; }
.test-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--panel-2);
  font-size: 12.5px;
  border-left: 3px solid transparent;
}
.test-row .t-idx { color: var(--text-3); font-variant-numeric: tabular-nums; flex: 0 0 46px; }
.test-row .t-state { flex: 0 0 42px; font-weight: 700; font-size: 11.5px; letter-spacing: 0.4px; }
.test-row .t-info { flex: 1 1 auto; color: var(--text-3); font-size: 11.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.test-row .t-toggle { font-size: 11px; color: var(--text-3); }
.test-row .t-toggle:hover { color: var(--accent); }
.test-row.pass { border-left-color: var(--green); }
.test-row.pass .t-state { color: var(--green); }
.test-row.fail { border-left-color: var(--red); }
.test-row.fail .t-state { color: var(--red); }
.test-row.warn { border-left-color: var(--amber); }
.test-row.warn .t-state { color: var(--amber); }
.test-row.run { border-left-color: var(--accent); }
.test-row.run .t-state { color: var(--accent); }
.test-row.skip { opacity: 0.5; }

.test-detail {
  margin: -2px 0 6px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--code-bg);
  border: 1px solid var(--border-soft);
  font-family: "SF Mono", Consolas, monospace;
  font-size: 11.5px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-2);
  max-height: 220px;
  overflow: auto;
}
.test-detail b { color: var(--text-3); font-weight: 500; display: block; margin-top: 6px; }
.test-detail b:first-child { margin-top: 0; }

.judge-output {
  margin: 8px 0 0;
  padding: 10px 12px;
  background: var(--code-bg);
  border: 1px solid var(--border-soft);
  border-radius: 9px;
  font-family: "SF Mono", Consolas, monospace;
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--text-2);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 260px;
  overflow: auto;
}

/* ---------------- 手机端 ---------------- */

.mobile-tabs { display: none; }

@media (max-width: 1080px) {
  .workspace { grid-template-columns: 220px minmax(280px, 1fr) minmax(320px, 1fr); }
  .brand-text small { display: none; }
}

@media (max-width: 860px) {
  body { overflow: hidden; }
  .topbar { height: 52px; flex: 0 0 52px; padding: 0 10px; gap: 6px; }
  .brand-mark { width: 28px; height: 28px; }
  .brand-text small { display: none; }
  .brand-text b { font-size: 14px; }
  .topnav { display: flex; gap: 0; margin-left: 2px; }
  .navbtn { padding: 6px 8px; font-size: 12.5px; }
  .user-chip { max-width: none; padding: 4px; border: none; background: none; }
  .user-name { display: none; }
  .avatar { width: 26px; height: 26px; flex: 0 0 26px; }

  .workspace { display: block; padding: 8px; overflow: hidden; }
  .panel { height: 100%; border-radius: 12px; }
  .workspace > .panel { display: none; }

  body[data-tab="statement"] .statement-panel { display: flex; }
  body[data-tab="code"] .code-panel,
  body[data-tab="result"] .code-panel { display: flex; }
  body[data-tab="result"] .editor-wrap { display: none; }
  body[data-tab="result"] .result-body { flex: 1 1 auto; }

  .mobile-tabs {
    display: flex;
    flex: 0 0 54px;
    border-top: 1px solid var(--border-soft);
    background: var(--bg-soft);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .mobile-tabs button {
    flex: 1;
    color: var(--text-3);
    font-size: 13px;
  }
  .mobile-tabs button.active { color: var(--accent); font-weight: 600; }
  .statement-panel .panel-head { padding-right: 12px; }
  .io-block { grid-template-columns: 1fr; }
}

/* ---------------- 弹窗 / 面板 ---------------- */

.modal, .sheet {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(6, 8, 13, 0.62);
  backdrop-filter: blur(6px);
}

.modal-card {
  width: min(360px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.modal-card h3 { margin: 0 0 6px; font-size: 16px; }
.modal-tip { margin: 0 0 14px; font-size: 12.5px; color: var(--text-3); }
.modal-card input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text);
}
.modal-card input:focus { outline: none; border-color: var(--accent); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.sheet-card {
  width: min(820px, 100%);
  max-height: min(80vh, 720px);
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.sheet-head {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-soft);
}
.sheet-head h2 { margin: 0; font-size: 15px; }
.sheet-body { flex: 1 1 auto; overflow-y: auto; padding: 12px 16px 18px; }

.sub-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.sub-table th {
  text-align: left;
  font-weight: 500;
  color: var(--text-3);
  padding: 7px 8px;
  border-bottom: 1px solid var(--border-soft);
  white-space: nowrap;
}
.sub-table td { padding: 8px; border-bottom: 1px solid var(--border-soft); color: var(--text-2); }
.sub-table tr:last-child td { border-bottom: none; }
.sub-table .mono { font-variant-numeric: tabular-nums; color: var(--text-3); }
.vtag { font-size: 11px; font-weight: 700; letter-spacing: 0.4px; padding: 1px 7px; border-radius: 5px; }
.vtag.ac { background: var(--green-soft); color: var(--green); }
.vtag.wa { background: var(--red-soft); color: var(--red); }
.vtag.tle { background: var(--amber-soft); color: var(--amber); }
.vtag.ce { background: var(--amber-soft); color: var(--amber); }
.vtag.re { background: var(--red-soft); color: var(--red); }
.vtag.busy { background: var(--red-soft); color: var(--red); }

.rank-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 13px;
}
.rank-row:last-child { border-bottom: none; }
.rank-no { width: 26px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.rank-no.top { color: var(--amber); font-weight: 700; }
.rank-name { flex: 1 1 auto; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rank-stat { color: var(--text-3); font-size: 12px; white-space: nowrap; }
.rank-stat b { color: var(--accent); font-weight: 600; }

.empty-line { padding: 26px 4px; text-align: center; color: var(--text-3); font-size: 13px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 60;
  max-width: min(520px, calc(100vw - 32px));
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  box-shadow: var(--shadow);
  text-align: center;
}

/* 滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }
::-webkit-scrollbar-track { background: transparent; }