:root {
  color-scheme: light;
  --surface-canvas: #f7f6f2;
  --surface-primary: #ffffff;
  --surface-secondary: #f1f0eb;
  --surface-elevated: #ffffff;
  --text-primary: #242321;
  --text-secondary: #66625d;
  --text-tertiary: #918c85;
  --border-default: #dedbd4;
  --border-subtle: #eceae5;
  --accent-primary: #1769aa;
  --accent-hover: #0f568f;
  --status-success: #24724a;
  --status-success-bg: #e9f5ee;
  --status-warning: #945f14;
  --status-warning-bg: #fff4df;
  --status-error: #a43a3a;
  --status-error-bg: #fbeaea;
  --focus-ring: #2f80c3;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --radius-control: 0.375rem;
  --radius-panel: 0.625rem;
  --radius-elevated: 0.875rem;
  --shadow-soft:
    0 0.25rem 1.125rem rgb(36 35 33 / 4%),
    0 0.125rem 0.5rem rgb(36 35 33 / 3%),
    0 0.05rem 0.2rem rgb(36 35 33 / 2%);
  --font-ui:
    "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-block-size: 100%;
  background: var(--surface-canvas);
  scroll-behavior: smooth;
}

body {
  min-block-size: 100%;
  margin: 0;
  background: var(--surface-canvas);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent-primary);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--accent-hover);
}

:focus-visible {
  outline: 0.1875rem solid var(--focus-ring);
  outline-offset: 0.125rem;
}

.skip-link {
  position: fixed;
  inset-block-start: var(--space-3);
  inset-inline-start: var(--space-3);
  z-index: 10;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-control);
  background: var(--text-primary);
  color: var(--surface-primary);
  opacity: 0;
  transform: translateY(-150%);
}

.skip-link:focus {
  opacity: 1;
  transform: translateY(0);
}

.app-shell {
  display: grid;
  grid-template-columns: 15.5rem minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  max-block-size: 100dvh;
  min-block-size: 100dvh;
}

.sidebar {
  display: flex;
  min-block-size: 0;
  flex-direction: column;
  padding: var(--space-6) var(--space-4);
  border-inline-end: 0.0625rem solid var(--border-default);
  background: var(--surface-secondary);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-2) var(--space-6);
  color: var(--text-primary);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  inline-size: 2.25rem;
  block-size: 2.25rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: var(--radius-control);
  background: var(--text-primary);
  color: var(--surface-primary);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-copy {
  display: grid;
  line-height: 1.25;
}

.brand-copy strong {
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.brand-copy span {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.primary-nav {
  display: grid;
  gap: var(--space-1);
}

.nav-link {
  display: flex;
  min-block-size: 2.75rem;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-control);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    background-color 180ms ease-in-out,
    color 180ms ease-in-out,
    transform 120ms ease-out;
}

.nav-link:hover {
  background: var(--surface-primary);
  color: var(--text-primary);
}

.nav-link:active {
  transform: translateY(0.0625rem);
}

.nav-link[aria-current="page"] {
  background: var(--surface-primary);
  color: var(--text-primary);
  box-shadow: inset 0.1875rem 0 var(--accent-primary);
}

.nav-icon {
  inline-size: 1.125rem;
  block-size: 1.125rem;
  flex: 0 0 auto;
  stroke: currentColor;
  stroke-width: 1.8;
}

.sidebar-footer {
  display: grid;
  gap: var(--space-3);
  margin-block-start: auto;
  padding-block-start: var(--space-6);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.main-content {
  min-block-size: 0;
  overflow: auto;
}

.page-wrap {
  inline-size: min(100%, 76rem);
  min-block-size: 100%;
  margin-inline: auto;
  padding: clamp(1.25rem, 3vw, 2.5rem);
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-6);
  margin-block-end: var(--space-8);
}

.page-heading {
  min-inline-size: 0;
}

.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-title {
  margin: 0;
  font-size: clamp(1.75rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.25;
  text-wrap: balance;
}

.page-lead {
  max-inline-size: 65ch;
  margin: var(--space-2) 0 0;
  color: var(--text-secondary);
  text-wrap: pretty;
}

.header-actions,
.action-row,
.button-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.flash {
  margin: 0 0 var(--space-6);
  padding: var(--space-3) var(--space-4);
  border: 0.0625rem solid var(--status-warning);
  border-radius: var(--radius-control);
  background: var(--status-warning-bg);
  color: var(--status-warning);
  font-weight: 500;
}

.button {
  display: inline-flex;
  min-block-size: 2.75rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 0.0625rem solid transparent;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.25;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color 180ms ease-in-out,
    border-color 180ms ease-in-out,
    color 180ms ease-in-out,
    transform 120ms ease-out;
}

.button:hover {
  color: var(--text-primary);
}

.button:active {
  transform: translateY(0.0625rem);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.button-primary {
  background: var(--accent-primary);
  color: var(--surface-primary);
}

.button-primary:hover {
  background: var(--accent-hover);
  color: var(--surface-primary);
}

.button-secondary {
  border-color: var(--border-default);
  background: var(--surface-primary);
}

.button-secondary:hover {
  background: var(--surface-secondary);
}

.button-quiet {
  color: var(--text-secondary);
}

.button-quiet:hover {
  background: var(--surface-secondary);
  color: var(--text-primary);
}

.button-danger {
  border-color: var(--status-error);
  color: var(--status-error);
}

.button-danger:hover {
  background: var(--status-error-bg);
}

.status-badge {
  display: inline-flex;
  min-block-size: 1.75rem;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: 999rem;
  background: var(--surface-secondary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.35;
  white-space: nowrap;
}

.status-success {
  background: var(--status-success-bg);
  color: var(--status-success);
}

.status-warning {
  background: var(--status-warning-bg);
  color: var(--status-warning);
}

.status-error {
  background: var(--status-error-bg);
  color: var(--status-error);
}

.metric-grid,
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(17rem, 100%), 1fr));
  gap: var(--space-4);
}

.metric-grid {
  margin-block-end: var(--space-8);
}

.metric-card,
.panel,
.account-card,
.compose-card,
.empty-state,
.login-card {
  border: 0.0625rem solid var(--border-default);
  border-radius: var(--radius-panel);
  background: var(--surface-primary);
}

.metric-card {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-4);
}

.metric-label {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 600;
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.metric-help {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.panel,
.account-card,
.compose-card {
  padding: var(--space-6);
}

.panel-elevated,
.login-card {
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.section-stack {
  display: grid;
  gap: var(--space-8);
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-block-end: var(--space-5);
}

.panel-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  text-wrap: balance;
}

.panel-description {
  max-inline-size: 65ch;
  margin: var(--space-1) 0 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-wrap: pretty;
}

.list-clean,
.activity-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.list-row,
.activity-item {
  display: flex;
  min-inline-size: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-block-start: 0.0625rem solid var(--border-subtle);
}

.list-row:first-child,
.activity-item:first-child {
  border-block-start: 0;
}

.row-main {
  min-inline-size: 0;
}

.row-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.row-meta {
  margin: var(--space-1) 0 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  overflow-wrap: anywhere;
}

.account-list {
  display: grid;
  gap: var(--space-4);
}

.account-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-6);
}

.account-summary {
  display: grid;
  align-content: start;
  gap: var(--space-3);
  min-inline-size: 0;
}

.account-name {
  margin: 0;
  font-size: 1rem;
  font-weight: 650;
}

.account-handle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  overflow-wrap: anywhere;
}

.account-statuses {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.advanced-settings {
  grid-column: 1 / -1;
  border-block-start: 0.0625rem solid var(--border-subtle);
  padding-block-start: var(--space-4);
}

.advanced-settings summary {
  display: inline-flex;
  min-block-size: 2.75rem;
  align-items: center;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
}

.token-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  padding-block-start: var(--space-4);
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field > label,
.field-label {
  color: var(--text-primary);
  font-size: 0.8125rem;
  font-weight: 600;
}

.field-help {
  margin: calc(var(--space-1) * -1) 0 0;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.control,
input,
textarea,
select {
  inline-size: 100%;
  min-block-size: 2.75rem;
  padding: var(--space-2) var(--space-3);
  border: 0.0625rem solid var(--border-default);
  border-radius: var(--radius-control);
  background: var(--surface-primary);
}

textarea {
  min-block-size: 12rem;
  resize: vertical;
  line-height: 1.6;
}

input::placeholder,
textarea::placeholder {
  color: var(--text-tertiary);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--text-tertiary);
}

fieldset {
  min-inline-size: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  margin-block-end: var(--space-3);
  font-size: 0.8125rem;
  font-weight: 600;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(15rem, 100%), 1fr));
  gap: var(--space-3);
}

.checkbox-card {
  display: flex;
  min-block-size: 3.5rem;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 0.0625rem solid var(--border-default);
  border-radius: var(--radius-control);
  background: var(--surface-primary);
  cursor: pointer;
}

.checkbox-card:hover {
  border-color: var(--accent-primary);
}

.checkbox-card:has(input:checked) {
  border-color: var(--accent-primary);
  background: var(--status-success-bg);
}

.checkbox-card input {
  inline-size: 1.125rem;
  min-block-size: 1.125rem;
  margin: 0;
  padding: 0;
  accent-color: var(--accent-primary);
}

.compose-card {
  display: grid;
  gap: var(--space-6);
}

.form-section {
  display: grid;
  gap: var(--space-4);
  padding-block-end: var(--space-6);
  border-block-end: 0.0625rem solid var(--border-subtle);
}

.form-section:last-of-type {
  padding-block-end: 0;
  border-block-end: 0;
}

.step-heading {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.step-heading h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.step-number {
  display: grid;
  inline-size: 1.75rem;
  block-size: 1.75rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 999rem;
  background: var(--text-primary);
  color: var(--surface-primary);
  font-size: 0.75rem;
  font-weight: 700;
}

.inline-note {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-control);
  background: var(--status-warning-bg);
  color: var(--status-warning);
  font-size: 0.875rem;
  text-wrap: pretty;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block-start: var(--space-4);
  border-block-start: 0.0625rem solid var(--border-subtle);
}

.table-wrap {
  overflow-x: auto;
  border: 0.0625rem solid var(--border-default);
  border-radius: var(--radius-panel);
  background: var(--surface-primary);
}

.data-table {
  inline-size: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.col-status { inline-size: 10%; }
.col-post { inline-size: 27%; }
.col-accounts { inline-size: 14%; }
.col-schedule { inline-size: 14%; }
.col-result { inline-size: 24%; }
.col-action { inline-size: 11%; }

.data-table th,
.data-table td {
  padding: var(--space-3) var(--space-4);
  border-block-end: 0.0625rem solid var(--border-subtle);
  text-align: start;
  vertical-align: top;
  overflow-wrap: anywhere;
}

.data-table th {
  background: var(--surface-secondary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
}

.data-table tbody tr:last-child td {
  border-block-end: 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: var(--space-2);
}

.calendar-day {
  min-block-size: 8.5rem;
  padding: var(--space-3);
  border: 0.0625rem solid var(--border-default);
  border-radius: var(--radius-control);
  background: var(--surface-primary);
}

.calendar-date {
  margin: 0 0 var(--space-3);
  font-size: 0.875rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.calendar-item {
  margin: var(--space-2) 0 0;
  padding: var(--space-2);
  border-radius: var(--radius-control);
  background: var(--surface-secondary);
  font-size: 0.75rem;
  overflow-wrap: anywhere;
}

.empty-state {
  display: grid;
  min-block-size: 12rem;
  place-items: center;
  padding: var(--space-8);
  text-align: center;
}

.empty-inner {
  max-inline-size: 28rem;
}

.empty-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.empty-copy {
  margin: var(--space-2) 0 var(--space-5);
  color: var(--text-secondary);
  text-wrap: pretty;
}

.help-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(19rem, 100%), 1fr));
  gap: var(--space-4);
}

.help-card {
  padding: var(--space-5);
  border: 0.0625rem solid var(--border-default);
  border-radius: var(--radius-panel);
  background: var(--surface-primary);
}

.help-card h2 {
  margin: 0 0 var(--space-3);
  font-size: 1.25rem;
}

.help-card ol,
.help-card ul {
  margin: 0;
  padding-inline-start: var(--space-5);
}

.help-card li + li {
  margin-block-start: var(--space-2);
}

code {
  padding: 0 var(--space-1);
  border-radius: var(--radius-control);
  background: var(--surface-secondary);
  color: var(--text-primary);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.875em;
  white-space: nowrap;
}

.advanced-settings code {
  white-space: normal;
  word-break: break-all;
}

.login-shell {
  display: grid;
  min-block-size: 100dvh;
  grid-template-columns: minmax(0, 1fr) minmax(22rem, 32rem);
  background:
    radial-gradient(circle at 18% 20%, var(--surface-primary), transparent 38%),
    var(--surface-canvas);
}

.login-intro {
  display: grid;
  align-content: center;
  padding: clamp(2rem, 7vw, 6rem);
}

.login-intro-inner {
  max-inline-size: 36rem;
}

.login-intro h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.045em;
  line-height: 1.15;
  text-wrap: balance;
}

.login-intro p {
  max-inline-size: 55ch;
  margin: var(--space-4) 0 0;
  color: var(--text-secondary);
  text-wrap: pretty;
}

.login-panel {
  display: grid;
  align-items: center;
  padding: clamp(1rem, 4vw, 3rem);
  border-inline-start: 0.0625rem solid var(--border-default);
  background: var(--surface-secondary);
}

.login-card {
  padding: var(--space-8);
}

.login-card h2 {
  margin: 0;
  font-size: 1.25rem;
}

.login-card form {
  display: grid;
  gap: var(--space-4);
  margin-block-start: var(--space-6);
}

.login-card .button {
  inline-size: 100%;
}

.showcase {
  display: grid;
  gap: var(--space-8);
  inline-size: min(100% - 2rem, 72rem);
  margin-inline: auto;
  padding-block: var(--space-10);
}

.showcase-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

@media (max-width: 62rem) {
  .calendar-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 50rem) {
  .app-shell {
    display: block;
    max-block-size: none;
    min-block-size: 100dvh;
  }

  .sidebar {
    position: static;
    padding: var(--space-3);
    border-inline-end: 0;
    border-block-end: 0.0625rem solid var(--border-default);
  }

  .brand {
    padding-block-end: var(--space-3);
  }

  .primary-nav {
    display: flex;
    overflow-x: auto;
    gap: var(--space-1);
    padding-block-end: var(--space-1);
    scrollbar-width: thin;
  }

  .nav-link {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .nav-link[aria-current="page"] {
    box-shadow: inset 0 -0.1875rem var(--accent-primary);
  }

  .sidebar-footer {
    display: none;
  }

  .main-content {
    overflow: visible;
  }

  .page-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .account-card {
    grid-template-columns: minmax(0, 1fr);
  }

  .account-card > .button-cluster {
    justify-content: flex-start;
  }

  .token-form {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .login-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .login-intro {
    align-content: end;
    min-block-size: 16rem;
  }

  .login-panel {
    border-block-start: 0.0625rem solid var(--border-default);
    border-inline-start: 0;
  }
}

@media (max-width: 37.5rem) {
  .page-wrap {
    padding: var(--space-5) var(--space-4) var(--space-10);
  }

  .metric-grid,
  .card-grid,
  .checkbox-grid,
  .help-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .panel,
  .account-card,
  .compose-card {
    padding: var(--space-4);
  }

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

  .form-actions .button-cluster,
  .form-actions .button {
    inline-size: 100%;
  }

  .data-table thead {
    position: absolute;
    inline-size: 0.0625rem;
    block-size: 0.0625rem;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td {
    display: block;
    inline-size: 100%;
  }

  .data-table tr {
    padding: var(--space-3);
    border-block-end: 0.0625rem solid var(--border-default);
  }

  .data-table td {
    display: grid;
    grid-template-columns: minmax(6rem, 35%) minmax(0, 1fr);
    gap: var(--space-3);
    padding: var(--space-2) 0;
    border: 0;
  }

  .data-table td::before {
    color: var(--text-secondary);
    content: attr(data-label);
    font-size: 0.75rem;
    font-weight: 600;
  }

  .data-table td[data-label="글"],
  .data-table td[data-label="결과"] {
    display: block;
  }

  .data-table td[data-label="글"]::before,
  .data-table td[data-label="결과"]::before {
    display: block;
    margin-block-end: var(--space-2);
  }

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

  .calendar-day {
    min-block-size: auto;
  }

  .login-intro {
    min-block-size: 13rem;
    padding: var(--space-8) var(--space-5);
  }

  .login-card {
    padding: var(--space-5);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}