@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css");
@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=Syne:wght@700;800&display=swap");

:root {
  --carbon: #080807;
  --surface: #10100e;
  --surface-deep: #060605;
  --fg: #f4f1ea;
  --text-secondary: #b8b3a8;
  --text-muted: #7c786f;
  --text-light: #66625a;
  --signal: #ff3d1f;
  --cyan: #ff3d1f;
  --ok: #2ee59d;
  --warn: #ffb020;
  --border: rgba(244, 241, 234, 0.14);
  --border-strong: rgba(244, 241, 234, 0.32);
  --font-kr: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-disp: "Syne", "Pretendard Variable", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--carbon);
  color: var(--fg);
  font-family: var(--font-kr);
  line-height: 1.55;
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

code {
  font-family: var(--font-mono);
  font-size: 0.84em;
  background: rgba(244, 241, 234, 0.07);
  padding: 2px 6px;
  border: 1px solid var(--border);
}

.hidden {
  display: none !important;
}

/* ── 로그인 게이트 ── */
.login-shell {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 61, 31, 0.12), transparent 52%),
    var(--carbon);
}

.login-card {
  width: 100%;
  max-width: 460px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  padding: 36px 34px;
}

.brand-cube {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--signal);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

/* ── 스튜디오 상단 헤더 & 탭 바 ── */
.admin-header {
  min-height: 60px;
  padding: 12px clamp(18px, 3vw, 40px);
  background: #050504;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.admin-header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 0.96rem;
  letter-spacing: -0.02em;
}

.admin-header-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.header-link {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  transition: color 0.16s ease;
}

.header-link:hover {
  color: var(--signal);
}

.tabs-bar {
  display: flex;
  overflow-x: auto;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 clamp(18px, 3vw, 40px);
}

.tab-btn {
  border: none;
  border-right: 1px solid var(--border);
  background: transparent;
  padding: 15px 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  transition: color 0.16s ease, background 0.16s ease;
}

.tab-btn:first-child {
  border-left: 1px solid var(--border);
}

.tab-btn:hover {
  color: var(--fg);
  background: rgba(244, 241, 234, 0.03);
}

.tab-btn.active {
  color: #fff;
  background: rgba(255, 61, 31, 0.12);
  box-shadow: inset 0 -2px 0 var(--signal);
}

.tab-badge {
  background: var(--signal);
  color: #fff;
  padding: 1px 7px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
}

/* ── 메인 레이아웃 & 카드 ── */
.admin-main {
  max-width: 1460px;
  margin: 0 auto;
  padding: 28px clamp(18px, 3vw, 40px) 72px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  background: var(--surface);
  margin-bottom: 24px;
}

.stat-card {
  padding: 22px 24px;
  border-right: 1px solid var(--border);
}

.stat-card:last-child {
  border-right: none;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-num {
  font-family: var(--font-disp);
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-top: 8px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 26px 28px;
  margin-bottom: 22px;
}

.card-accent {
  border-top: 2px solid var(--signal);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 14px;
  padding-bottom: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* ── 기수 슬롯 그리드 ── */
.cohort-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.cohort-box {
  border: 1px solid var(--border-strong);
  background: var(--surface-deep);
  padding: 20px;
}

.gauge-bg {
  height: 6px;
  background: rgba(244, 241, 234, 0.1);
  margin-top: 12px;
}

.gauge-fill {
  height: 100%;
  background: var(--signal);
  transition: width 0.3s ease;
}

/* ── 버튼 & 배지 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--fg);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background: #fff;
  border-color: #fff;
  color: #080807;
}

.btn-outline {
  background: rgba(244, 241, 234, 0.03);
  border-color: var(--border-strong);
  color: var(--fg);
}

.btn-outline:hover:not(:disabled) {
  background: var(--fg);
  border-color: var(--fg);
  color: #080807;
}

.btn-success {
  background: var(--ok);
  border-color: var(--ok);
  color: #050504;
}

.btn-success:hover:not(:disabled) {
  background: #fff;
  border-color: #fff;
}

.btn-danger {
  background: rgba(255, 61, 31, 0.14);
  border-color: var(--signal);
  color: #ffb4a8;
}

.btn-danger:hover:not(:disabled) {
  background: var(--signal);
  color: #fff;
}

.btn-sm {
  min-height: 32px;
  padding: 0 12px;
  font-size: 0.78rem;
}

.pill {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  border: 1px solid var(--border-strong);
}

.pill-pending {
  color: var(--text-secondary);
  background: rgba(244, 241, 234, 0.05);
}

.pill-paid {
  color: var(--warn);
  border-color: rgba(255, 176, 32, 0.45);
  background: rgba(255, 176, 32, 0.1);
}

.pill-invited,
.pill-ready {
  color: var(--ok);
  border-color: rgba(46, 229, 157, 0.45);
  background: rgba(46, 229, 157, 0.1);
}

.pill-cancelled,
.pill-missing {
  color: var(--signal);
  border-color: rgba(255, 61, 31, 0.5);
  background: rgba(255, 61, 31, 0.12);
}

/* ── 폼 & AI 스튜디오 ── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-secondary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
select,
textarea {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  background: var(--surface-deep);
  color: var(--fg);
  font-size: 0.9rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--signal);
}

.studio-grid-2 {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.studio-box {
  border: 1px solid var(--border);
  background: var(--surface-deep);
  padding: 16px;
}

.studio-box-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 0.88rem;
}

.prompt-box {
  min-height: 190px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  background: #040403;
}

/* ── 툴바 · 테이블 · 기수 탭 ── */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th,
td {
  text-align: left;
  padding: 13px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background: #080807;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: rgba(244, 241, 234, 0.025);
}

.cohort-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.cohort-pill-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface-deep);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
}

.cohort-pill-btn.active {
  background: var(--fg);
  border-color: var(--fg);
  color: #080807;
  font-weight: 700;
}

/* ── 배너 · 모달 · 토스트 ── */
.banner {
  padding: 14px 18px;
  border: 1px solid var(--border-strong);
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.88rem;
}

.banner-warn {
  background: rgba(255, 176, 32, 0.09);
  border-color: var(--warn);
}

.banner-danger {
  background: rgba(255, 61, 31, 0.12);
  border-color: var(--signal);
}

.banner-info {
  background: rgba(46, 229, 157, 0.09);
  border-color: var(--ok);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 800;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-box {
  width: 100%;
  max-width: 680px;
  max-height: 90svh;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  padding: 26px 28px;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 950;
  background: var(--fg);
  color: #080807;
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.65);
}

@media (max-width: 960px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-card:nth-child(2) {
    border-right: none;
  }
  .stat-card:nth-child(1),
  .stat-card:nth-child(2) {
    border-bottom: 1px solid var(--border);
  }
  .studio-grid-2,
  .form-grid {
    grid-template-columns: 1fr;
  }
}