/* ============================================================
   作战日历 — 与 design.css 同一套视觉语言
   · 排版：Inter / Noto Sans SC，等宽字体退场
   · 强调色：系统蓝承担交互，品牌黄只作点缀
   · 边框：1px 发丝线，取代原来的 3px 左侧粗条
   · 语义色：学科与状态用低饱和染色 + 圆点标识
   ============================================================ */

/* ---------- 顶部：倒计时 + 进度 ---------- */
.opc-board {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 16px;
  margin-bottom: 40px;
}
.opc-cd, .opc-progress {
  background: var(--surface) !important;
  border: 1px solid var(--ln-hair) !important;
  border-radius: var(--r-lg) !important;
  padding: 26px 28px !important;
  box-shadow: none !important;
}
.opc-cd { display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; }

.opc-cd-label {
  flex: 0 0 100%;
  font-family: var(--font-sans) !important;
  font-size: var(--fs-eyebrow) !important;
  font-weight: var(--fw-semi) !important;
  letter-spacing: var(--ls-eyebrow) !important;
  color: var(--accent) !important;
  text-transform: none !important;
  margin-bottom: 8px;
}
.opc-cd-num {
  font-family: var(--font-display) !important;
  font-size: clamp(48px, 5.4vw, 68px) !important;
  font-weight: var(--fw-semi) !important;
  line-height: 0.94 !important;
  letter-spacing: -0.038em !important;
  color: var(--fg) !important;
  font-variant-numeric: tabular-nums;
}
.opc-cd-unit {
  font-size: var(--fs-body) !important;
  font-weight: var(--fw-medium);
  color: var(--muted) !important;
  padding-bottom: 8px;
}
.opc-cd-target {
  margin-left: auto;
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  color: var(--muted) !important;
  padding-bottom: 8px;
  letter-spacing: 0;
}
.opc-progress { display: flex; flex-direction: column; justify-content: center; gap: 12px; }
.opc-progress-head {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  font-weight: var(--fw-medium);
  color: var(--muted) !important;
  letter-spacing: 0;
}
.opc-progress-track {
  height: 6px !important;
  border-radius: var(--r-pill) !important;
  background: var(--ln-hair) !important;
  overflow: hidden;
}
.opc-progress-track i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-press), var(--accent)) !important;
  border-radius: var(--r-pill);
  transition: width var(--t-reveal) var(--ease);
}
.opc-progress-hint {
  margin: 0 !important;
  font-size: var(--fs-xs) !important;
  color: var(--muted-2) !important;
  letter-spacing: 0;
}

/* ---------- 月份切换：Apple 分段控件 ---------- */
.opc-tabs {
  display: inline-flex !important;
  gap: 2px !important;
  padding: 2px;
  margin-bottom: 22px !important;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--ln-hair);
  flex-wrap: wrap;
}
.opc-tab {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  font-weight: var(--fw-medium) !important;
  letter-spacing: 0 !important;
  padding: 8px 16px !important;
  border-radius: var(--r-pill) !important;
  background: none !important;
  border: none !important;
  color: var(--muted) !important;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.opc-tab:hover { color: var(--fg) !important; }
.opc-tab.is-on {
  background: var(--bg) !important;
  color: var(--fg) !important;
  font-weight: var(--fw-semi) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
}

/* ---------- 图例 ---------- */
.opc-legend {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
  margin: 0 0 22px !important;
  font-size: var(--fs-xs) !important;
  color: var(--muted) !important;
  letter-spacing: 0;
}
.opc-lg { display: inline-flex; align-items: center; gap: 7px; }
.opc-lg i {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
  background: var(--ln-strong);
}
.opc-lg:nth-child(1) i { background: var(--brand); }
.opc-lg:nth-child(2) i { background: var(--ok); }
.opc-lg:nth-child(3) i { background: var(--muted-2); }

/* ---------- 月份标题 ---------- */
.opc-mt {
  font-family: var(--font-display) !important;
  font-size: var(--fs-h3) !important;
  font-weight: var(--fw-semi) !important;
  letter-spacing: -0.018em !important;
  color: var(--fg) !important;
  margin: 44px 0 18px !important;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.opc-mt small {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  color: var(--muted) !important;
  letter-spacing: 0 !important;
  font-weight: var(--fw-regular);
}

/* ---------- 日历网格 ---------- */
.opc-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.opc-dow {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  font-weight: var(--fw-medium);
  color: var(--muted-2) !important;
  text-align: center;
  padding-bottom: 6px;
  letter-spacing: 0 !important;
}
.opc-cell {
  position: relative;
  background: var(--surface) !important;
  border: 1px solid var(--ln-hair) !important;
  border-radius: var(--r-md) !important;
  min-height: 108px;
  padding: 10px 11px !important;
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  overflow: hidden;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}
/* 状态标识改为顶部细条，取代原来的 3px 左粗边 */
.opc-cell::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: transparent;
  transition: background var(--t-fast) var(--ease);
}
.opc-cell:hover {
  border-color: var(--ln-strong) !important;
  transform: translateY(-2px);
}
.opc-cell.is-empty {
  background: transparent !important;
  border-color: transparent !important;
  cursor: default;
  min-height: 0;
}
.opc-cell.is-empty::before { display: none; }
.opc-cell.is-empty:hover { transform: none; }

.opc-cell.has-ms::before { background: var(--brand); }
.opc-cell.is-cp::before { background: var(--ok); }
.opc-cell.is-exam::before { background: var(--danger); }
.opc-cell.has-ms { background: color-mix(in srgb, var(--brand) 7%, var(--surface)) !important; }
.opc-cell.is-cp { background: color-mix(in srgb, var(--ok) 7%, var(--surface)) !important; }
.opc-cell.is-exam { background: color-mix(in srgb, var(--danger) 8%, var(--surface)) !important; }

.opc-cell.is-today { border-color: var(--accent) !important; }
.opc-cell.is-sel {
  border-color: var(--accent) !important;
  background: var(--surface-2) !important;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.opc-num {
  font-family: var(--font-display) !important;
  font-size: var(--fs-sm) !important;
  font-weight: var(--fw-semi) !important;
  color: var(--muted) !important;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.opc-cell.has-ms .opc-num,
.opc-cell.is-sel .opc-num,
.opc-cell.is-today .opc-num { color: var(--fg) !important; }

.opc-ms {
  font-family: var(--font-sans) !important;
  font-size: 10.5px !important;
  font-weight: var(--fw-semi);
  letter-spacing: 0.005em !important;
  color: var(--fg) !important;
  background: var(--ln-hair) !important;
  border-radius: var(--r-pill) !important;
  padding: 2px 8px !important;
  align-self: flex-start;
  white-space: nowrap;
}
.opc-cell.has-ms .opc-ms { background: color-mix(in srgb, var(--brand) 24%, transparent) !important; }
.opc-cell.is-cp .opc-ms { background: color-mix(in srgb, var(--ok) 22%, transparent) !important; }
.opc-cell.is-exam .opc-ms { background: color-mix(in srgb, var(--danger) 24%, transparent) !important; }

.opc-line {
  font-size: 11.5px !important;
  line-height: 1.5 !important;
  color: var(--muted) !important;
  word-break: break-word;
  letter-spacing: 0;
}
.opc-line b { color: var(--fg-2) !important; font-weight: var(--fw-medium); }
.opc-line .k {
  font-family: var(--font-sans) !important;
  font-weight: var(--fw-semi);
  color: var(--muted-2) !important;
  margin-right: 5px;
  font-size: 10px;
}
/* 学科色：低饱和、可辨识、不刺眼 */
.opc-line.k-m .k { color: #6aa9ff !important; }
.opc-line.k-z .k { color: #e0a066 !important; }
.opc-line.k-e .k { color: #9d8cff !important; }
.opc-line.k-p .k { color: #6cbf94 !important; }
html[data-theme="light"] .opc-line.k-m .k { color: #0071e3 !important; }
html[data-theme="light"] .opc-line.k-z .k { color: #a05a00 !important; }
html[data-theme="light"] .opc-line.k-e .k { color: #5e46c8 !important; }
html[data-theme="light"] .opc-line.k-p .k { color: #1f7a4d !important; }

.opc-more { font-size: 10px !important; color: var(--muted-2) !important; margin-top: auto; }

/* ---------- 当日详情 ---------- */
.opc-detail {
  margin-top: 22px !important;
  background: var(--surface) !important;
  border: 1px solid var(--ln-hair) !important;
  border-radius: var(--r-lg) !important;
  padding: 24px 28px !important;
  box-shadow: none !important;
}
.opc-detail:empty { display: none; }
.opc-detail-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.opc-detail-date {
  font-family: var(--font-display) !important;
  font-size: var(--fs-h4) !important;
  font-weight: var(--fw-semi) !important;
  color: var(--fg) !important;
  letter-spacing: -0.014em;
}
.opc-detail-wd {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  color: var(--muted) !important;
}
.opc-detail-ms {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  font-weight: var(--fw-semi);
  color: var(--accent) !important;
  background: var(--accent-soft) !important;
  border-radius: var(--r-pill) !important;
  padding: 3px 11px !important;
  margin-left: auto;
}
.opc-detail-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  padding: 11px 0 !important;
  border-top: 1px solid var(--ln-hair) !important;
}
.opc-detail-row:first-of-type { border-top: none !important; }
.opc-detail-k {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  font-weight: var(--fw-medium);
  color: var(--muted) !important;
}
.opc-detail-v { font-size: var(--fs-sm) !important; color: var(--fg-2) !important; line-height: 1.66; }
.opc-empty {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-sm) !important;
  color: var(--muted) !important;
  padding: 34px 0 !important;
  text-align: center;
}

/* ---------- 关键节点 / 注意事项 ---------- */
.opc-sec { margin-top: 72px !important; }
.opc-h2 {
  font-family: var(--font-display) !important;
  font-size: var(--fs-h3) !important;
  font-weight: var(--fw-semi) !important;
  letter-spacing: -0.02em !important;
  color: var(--fg) !important;
  margin: 0 0 22px !important;
  padding-bottom: 16px !important;
  border-bottom: 1px solid var(--ln-hair) !important;
}
.opc-keys { display: grid; grid-template-columns: repeat(auto-fit, minmax(272px, 1fr)); gap: 16px; }
.opc-key {
  background: var(--surface) !important;
  border: 1px solid var(--ln-hair) !important;
  border-radius: var(--r-md) !important;
  padding: 20px 22px !important;
  display: flex;
  flex-direction: column;
  gap: 7px;
  box-shadow: none !important;
}
.opc-key-final {
  background: color-mix(in srgb, var(--danger) 7%, var(--surface)) !important;
  border-color: color-mix(in srgb, var(--danger) 26%, var(--ln-hair)) !important;
}
.opc-key-date {
  font-family: var(--font-sans) !important;
  font-size: var(--fs-xs) !important;
  font-weight: var(--fw-semi);
  color: var(--accent) !important;
  letter-spacing: 0.01em !important;
}
.opc-key-final .opc-key-date { color: var(--danger) !important; }
.opc-key-name {
  font-size: var(--fs-body) !important;
  font-weight: var(--fw-semi) !important;
  color: var(--fg) !important;
  letter-spacing: -0.012em;
}
.opc-key-desc { font-size: var(--fs-xs) !important; line-height: 1.66 !important; color: var(--muted) !important; }
.opc-key-desc b { color: var(--fg-2) !important; }

.opc-rule {
  background: var(--surface) !important;
  border: 1px solid var(--ln-hair) !important;
  border-radius: var(--r-md) !important;
  padding: 20px 24px !important;
  margin-bottom: 14px !important;
  box-shadow: none !important;
}
.opc-rule h3 {
  margin: 0 0 9px !important;
  font-size: var(--fs-body) !important;
  font-weight: var(--fw-semi) !important;
  color: var(--fg) !important;
  letter-spacing: -0.012em;
}
.opc-rule p { margin: 0 !important; font-size: var(--fs-sm) !important; line-height: 1.72 !important; color: var(--muted) !important; }
.opc-rule b { color: var(--fg-2) !important; }
.opc-rule-warn {
  background: color-mix(in srgb, var(--danger) 6%, var(--surface)) !important;
  border-color: color-mix(in srgb, var(--danger) 22%, var(--ln-hair)) !important;
}
.opc-rule-warn h3 { color: var(--danger) !important; }
.opc-rule-ok {
  background: color-mix(in srgb, var(--ok) 6%, var(--surface)) !important;
  border-color: color-mix(in srgb, var(--ok) 22%, var(--ln-hair)) !important;
}
.opc-rule-ok h3 { color: var(--ok) !important; }
.opc-rule-note { border-color: var(--ln-hair) !important; }

@media (max-width: 900px) {
  .opc-board { grid-template-columns: 1fr; }
  .opc-cell { min-height: 98px; }
}
@media (max-width: 720px) {
  .opc-grid { grid-template-columns: 1fr; gap: 8px; }
  .opc-dow { display: none; }
  .opc-cell.is-empty { display: none; }
  .opc-cell { min-height: 0; padding: 13px 15px !important; }
  .opc-detail-row { grid-template-columns: 1fr; gap: 4px; }
  .opc-detail-k { color: var(--muted-2) !important; }
}