:root {
  --bg: #efe5d3;
  --bg-deep: #142033;
  --bg-deeper: #0d1727;
  --surface: rgba(255, 251, 245, 0.92);
  --surface-strong: #fffaf3;
  --surface-soft: rgba(252, 245, 234, 0.82);
  --surface-dark: rgba(18, 28, 44, 0.86);
  --line: rgba(94, 73, 43, 0.16);
  --line-strong: rgba(94, 73, 43, 0.28);
  --text: #1f2430;
  --text-soft: #675f57;
  --navy: #183255;
  --navy-2: #274d79;
  --copper: #bf6f31;
  --copper-soft: #f4dcc2;
  --gold: #d8a55a;
  --green: #2e8a5f;
  --green-soft: #ddf3e8;
  --amber: #b87823;
  --amber-soft: #f8e7c7;
  --red: #b74747;
  --red-soft: #f7dfdc;
  --shadow-xl: 0 32px 80px rgba(31, 20, 6, 0.18);
  --shadow-lg: 0 18px 40px rgba(33, 22, 5, 0.1);
  --shadow-sm: 0 10px 24px rgba(30, 20, 8, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  position: relative;
  overflow-x: hidden;
  color: var(--text);
  font-family: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 233, 188, 0.88), transparent 24%),
    radial-gradient(circle at 88% 15%, rgba(191, 111, 49, 0.14), transparent 22%),
    radial-gradient(circle at 78% 82%, rgba(39, 77, 121, 0.16), transparent 24%),
    linear-gradient(180deg, #f6ecdd 0%, #ece0ca 42%, #efe6da 100%);
}

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

a {
  color: inherit;
}

.ambient {
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: 0;
  filter: blur(6px);
  opacity: 0.7;
  animation: drift 16s ease-in-out infinite;
}

.ambient-a {
  top: -120px;
  right: -100px;
  width: 360px;
  height: 360px;
  border-radius: 42% 58% 63% 37% / 40% 41% 59% 60%;
  background: linear-gradient(135deg, rgba(216, 165, 90, 0.28), rgba(39, 77, 121, 0.18));
}

.ambient-b {
  left: -80px;
  bottom: 120px;
  width: 280px;
  height: 280px;
  border-radius: 58% 42% 37% 63% / 48% 59% 41% 52%;
  background: linear-gradient(135deg, rgba(191, 111, 49, 0.18), rgba(216, 165, 90, 0.22));
  animation-duration: 19s;
}

.eyebrow,
.brand-kicker,
.signal-label,
.rail-card span,
.surface-chip {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow,
.brand-kicker {
  font-size: 12px;
  font-weight: 700;
}

.auth-shell,
.app-shell {
  position: relative;
  z-index: 1;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 42px 28px;
}

.auth-stage {
  width: min(1320px, 100%);
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(420px, 0.88fr);
  gap: 24px;
  align-items: stretch;
}

.auth-visual,
.auth-panel,
.panel,
.metric-card,
.topbar,
.sidebar {
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xl);
}

.auth-visual {
  position: relative;
  overflow: hidden;
  padding: 40px;
  border-radius: 34px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), transparent 34%),
    radial-gradient(circle at 76% 24%, rgba(216, 165, 90, 0.28), transparent 22%),
    linear-gradient(160deg, #122033 0%, #132741 56%, #17335b 100%);
  color: #f4efe6;
  display: grid;
  gap: 28px;
}

.auth-visual::after {
  content: "";
  position: absolute;
  inset: auto -110px -120px auto;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 209, 143, 0.26), transparent 58%);
}

.auth-visual-top {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
}

.auth-visual-top h1 {
  margin: 0;
  max-width: 10.5em;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.auth-visual-top p {
  margin: 0;
  max-width: 640px;
  color: rgba(244, 239, 230, 0.8);
  font-size: 17px;
  line-height: 1.65;
}

.auth-signal-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.signal-card {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(18px);
  display: grid;
  gap: 8px;
}

.signal-card strong {
  font-size: 20px;
  line-height: 1.2;
}

.signal-card p {
  margin: 0;
  color: rgba(244, 239, 230, 0.74);
  font-size: 14px;
  line-height: 1.55;
}

.signal-label {
  color: rgba(255, 214, 162, 0.88);
  font-size: 11px;
}

.auth-rail {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
}

.rail-card {
  padding: 14px 18px;
  border-left: 3px solid rgba(255, 215, 169, 0.8);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 0 18px 18px 0;
  display: grid;
  gap: 4px;
}

.rail-card span {
  color: rgba(255, 214, 162, 0.88);
  font-size: 11px;
}

.rail-card strong {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.auth-panel {
  padding: 34px;
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(255, 251, 245, 0.96), rgba(250, 244, 235, 0.94)),
    linear-gradient(145deg, rgba(255, 255, 255, 0.36), transparent 60%);
  backdrop-filter: blur(16px);
  display: grid;
  align-content: start;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  flex: 0 0 auto;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(216, 165, 90, 0.95), rgba(39, 77, 121, 0.95)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.35), transparent);
  color: white;
  font-family: "Space Grotesk", sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.42);
}

.brand h1,
.brand h2,
.brand p,
.auth-copy h3,
.auth-copy p,
.panel-head h3,
.topbar h2 {
  margin: 0;
}

.brand h2,
.topbar h2 {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.04em;
}

.brand h1 {
  font-size: 22px;
}

.brand h2 {
  font-size: 30px;
}

.brand p,
.sidebar-note p,
.auth-copy p,
.topbar p,
.help-head span {
  color: var(--text-soft);
}

.auth-copy {
  display: grid;
  gap: 10px;
}

.auth-copy h3 {
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.auth-copy p {
  font-size: 15px;
  line-height: 1.65;
}

.auth-form {
  margin-top: 2px;
}

.auth-help {
  padding: 18px;
  border-radius: 24px;
  background: rgba(252, 246, 238, 0.78);
  border: 1px solid rgba(140, 104, 58, 0.14);
  display: grid;
  gap: 16px;
}

.help-head {
  display: grid;
  gap: 6px;
}

.help-head strong {
  font-size: 17px;
}

.demo-login-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.demo-login-btn {
  min-height: 48px;
  font-weight: 600;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 308px minmax(0, 1fr);
  gap: 22px;
  padding: 22px;
}

.sidebar {
  position: sticky;
  top: 22px;
  align-self: start;
  min-height: calc(100vh - 44px);
  padding: 28px 22px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(15, 25, 40, 0.96), rgba(18, 31, 51, 0.96)),
    radial-gradient(circle at top right, rgba(216, 165, 90, 0.22), transparent 34%);
  color: #f5f1e7;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.sidebar .brand p,
.sidebar-note p {
  color: rgba(245, 241, 231, 0.7);
}

.nav-list {
  display: grid;
  gap: 10px;
}

.nav-item {
  padding: 15px 16px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.nav-item:hover {
  transform: translateX(4px);
  background: rgba(255, 255, 255, 0.07);
}

.nav-item.is-active {
  border-color: rgba(255, 210, 145, 0.38);
  background:
    linear-gradient(135deg, rgba(216, 165, 90, 0.18), rgba(39, 77, 121, 0.18)),
    rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.sidebar-note {
  margin-top: auto;
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 8px;
}

.sidebar-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
}

.sidebar-note #current-user-role {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
}

.sidebar-logout {
  width: 100%;
  margin-top: 8px;
}

.main-panel {
  padding: 8px 4px 36px 0;
  display: grid;
  align-content: start;
  gap: 18px;
}

.topbar {
  padding: 24px 28px;
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(255, 252, 247, 0.96), rgba(248, 241, 229, 0.92)),
    radial-gradient(circle at top right, rgba(216, 165, 90, 0.14), transparent 32%);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.topbar-copy {
  display: grid;
  gap: 10px;
}

.topbar h2 {
  font-size: clamp(30px, 3vw, 48px);
  line-height: 0.96;
}

.topbar p {
  max-width: 620px;
  font-size: 15px;
}

.topbar-side {
  display: grid;
  justify-items: end;
  gap: 10px;
}

.surface-chip,
.status-pill,
.meta-chip,
.risk-badge {
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.surface-chip {
  padding: 10px 14px;
  border: 1px solid rgba(24, 50, 85, 0.12);
  background: rgba(24, 50, 85, 0.04);
  color: var(--navy);
  font-size: 11px;
  font-weight: 700;
}

.status-pill {
  min-height: 40px;
  padding: 10px 14px;
  background: var(--surface-soft);
  color: var(--navy);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(24, 50, 85, 0.08);
}

.content {
  display: grid;
  gap: 18px;
}

.is-hidden {
  display: none !important;
}

.grid.metrics,
.grid.two-up,
.split-grid {
  display: grid;
  gap: 18px;
}

.grid.metrics {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid.metrics.compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid.two-up,
.split-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-card,
.panel {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.96), rgba(248, 241, 230, 0.92));
}

.metric-card::before,
.panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.72), transparent 70%);
}

.metric-card {
  padding: 22px 22px 24px;
}

.metric-card .label {
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.metric-card .value {
  margin-top: 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(32px, 2.8vw, 46px);
  font-weight: 700;
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.metric-card .sub {
  margin-top: 10px;
  min-height: 20px;
  color: var(--text-soft);
  font-size: 13px;
}

.metric-card.red .value {
  color: var(--red);
}

.metric-card.amber .value {
  color: var(--amber);
}

.metric-card.green .value {
  color: var(--green);
}

.panel {
  padding: 24px;
  box-shadow: var(--shadow-lg);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.panel-head h3 {
  font-size: 20px;
  letter-spacing: -0.03em;
}

.table-wrap {
  overflow: auto;
  border-radius: 20px;
  border: 1px solid rgba(94, 73, 43, 0.1);
  background: rgba(255, 255, 255, 0.44);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 14px;
  border-bottom: 1px solid rgba(94, 73, 43, 0.09);
  text-align: left;
  font-size: 14px;
  white-space: nowrap;
}

th {
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(20, 32, 51, 0.03);
}

tbody tr:hover {
  background: rgba(24, 50, 85, 0.04);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 4px;
}

.toolbar label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
}

.toolbar select {
  min-width: 220px;
}

.compact-top {
  margin-top: 18px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-field,
.form-check {
  display: grid;
  gap: 8px;
}

.form-field label,
.form-check label {
  color: var(--text-soft);
  font-size: 13px;
  font-weight: 600;
}

.form-field input,
.form-field select,
.form-field textarea,
.toolbar select,
.auth-form input {
  width: 100%;
  padding: 13px 14px;
  border-radius: 16px;
  border: 1px solid rgba(94, 73, 43, 0.14);
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  outline: none;
  transition:
    border-color 140ms ease,
    box-shadow 140ms ease,
    transform 140ms ease;
}

.form-field textarea {
  min-height: 110px;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus,
.toolbar select:focus,
.auth-form input:focus {
  border-color: rgba(24, 50, 85, 0.36);
  box-shadow: 0 0 0 4px rgba(24, 50, 85, 0.08);
}

.form-check {
  grid-template-columns: auto 1fr;
  align-items: center;
}

.span-2 {
  grid-column: span 2;
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.primary-btn,
.secondary-btn,
.mini-btn {
  border: 0;
  cursor: pointer;
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    background 140ms ease;
}

.primary-btn {
  padding: 13px 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, #17335b, #28588c);
  color: #fff;
  box-shadow: 0 12px 20px rgba(24, 50, 85, 0.22);
}

.secondary-btn,
.mini-btn {
  color: var(--text);
  background: linear-gradient(180deg, #f2e7d5, #eadbc3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.secondary-btn {
  padding: 13px 18px;
  border-radius: 16px;
}

.mini-btn {
  padding: 8px 12px;
  border-radius: 12px;
}

.primary-btn:hover,
.secondary-btn:hover,
.mini-btn:hover {
  transform: translateY(-1px);
}

.student-cards,
.report-list,
.history-list {
  display: grid;
  gap: 12px;
}

.student-card,
.report-card,
.history-card,
.profile-panel {
  border-radius: 22px;
  padding: 18px;
  border: 1px solid rgba(94, 73, 43, 0.12);
  background: linear-gradient(180deg, rgba(255, 254, 250, 0.92), rgba(247, 241, 231, 0.88));
}

.student-card.red {
  background: linear-gradient(180deg, rgba(255, 248, 246, 0.96), rgba(249, 232, 228, 0.92));
  border-color: rgba(183, 71, 71, 0.18);
}

.student-card.amber {
  background: linear-gradient(180deg, rgba(255, 251, 243, 0.96), rgba(248, 235, 208, 0.92));
  border-color: rgba(184, 120, 35, 0.2);
}

.student-card.green {
  background: linear-gradient(180deg, rgba(247, 255, 250, 0.96), rgba(228, 243, 234, 0.92));
  border-color: rgba(46, 138, 95, 0.18);
}

.student-card p,
.report-card p,
.profile-panel p {
  margin: 12px 0 0;
  line-height: 1.6;
  color: var(--text-soft);
}

.student-head,
.profile-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.student-name,
.profile-name {
  margin: 0;
  font-size: 24px;
  letter-spacing: -0.04em;
}

.risk-badge {
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 700;
}

.risk-badge.red {
  background: var(--red-soft);
  color: var(--red);
}

.risk-badge.amber {
  background: var(--amber-soft);
  color: var(--amber);
}

.risk-badge.green {
  background: var(--green-soft);
  color: var(--green);
}

.student-meta,
.profile-meta {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.meta-chip {
  padding: 7px 10px;
  background: rgba(24, 50, 85, 0.06);
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 600;
}

.student-stats,
.profile-stats {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.stat-box {
  padding: 14px;
  border-radius: 16px;
  background: rgba(20, 32, 51, 0.045);
}

.stat-box .label {
  color: var(--text-soft);
  font-size: 12px;
}

.stat-box .value {
  margin-top: 8px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.empty {
  padding: 8px 0;
  color: var(--text-soft);
  font-size: 14px;
}

.bar-chart {
  display: grid;
  gap: 12px;
}

.bar-row {
  display: grid;
  grid-template-columns: 130px 1fr 52px;
  gap: 12px;
  align-items: center;
}

.bar-label,
.bar-value {
  font-size: 13px;
  font-weight: 600;
}

.bar-track {
  height: 14px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(20, 32, 51, 0.08);
}

.bar-fill {
  height: 100%;
  border-radius: 999px;
}

.bar-fill.red {
  background: linear-gradient(90deg, #d35d5d, #b74747);
}

.bar-fill.amber {
  background: linear-gradient(90deg, #efb75b, #b87823);
}

.bar-fill.green {
  background: linear-gradient(90deg, #58c085, #2e8a5f);
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(12px, -16px, 0) rotate(5deg);
  }
}

@media (max-width: 1200px) {
  .auth-stage {
    grid-template-columns: 1fr;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    min-height: auto;
  }

  .grid.metrics,
  .grid.metrics.compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .auth-shell,
  .app-shell {
    padding: 16px;
  }

  .auth-visual,
  .auth-panel,
  .sidebar,
  .topbar,
  .panel,
  .metric-card {
    border-radius: 24px;
  }

  .auth-visual,
  .auth-panel,
  .sidebar,
  .topbar,
  .panel {
    padding: 20px;
  }

  .auth-signal-grid,
  .demo-login-actions,
  .grid.two-up,
  .split-grid,
  .student-stats,
  .profile-stats {
    grid-template-columns: 1fr;
  }

  .grid.metrics,
  .grid.metrics.compact {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-side {
    justify-items: start;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: span 1;
  }

  .student-head,
  .profile-head,
  .toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .bar-row {
    grid-template-columns: 88px 1fr 42px;
  }

  th,
  td {
    padding: 12px 10px;
  }
}