:root {
  --primary: #397ccf;
  --primary-deep: #236bb9;
  --primary-soft: #eef6ff;
  --accent: #ea6762;
  --accent-deep: #d65350;
  --accent-soft: #fff0ef;
  --ink-button: #0a1317;
  --on-ink-button: #ffffff;
  --canvas: #ffffff;
  --surface-soft: #f3f8fe;
  --ink-deep: #0a1317;
  --ink: #1c1e21;
  --steel: #5d6c7b;
  --stone: #8595a4;
  --hairline: #ced0d4;
  --hairline-soft: #dee3e9;
  --critical: #ea6762;
  --critical-strong: #d65350;
  --success: #397ccf;
  --font: "Optimistic VF", Montserrat, Helvetica, Arial, sans-serif;
  --radius-lg: 8px;
  --radius-xl: 16px;
  --radius-xxl: 24px;
  --radius-xxxl: 32px;
  --radius-full: 100px;
  --shadow-panel: rgba(57, 124, 207, 0.16) 0 1px 4px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
  background: var(--canvas);
  overscroll-behavior-y: none;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink-deep);
  background:
    linear-gradient(180deg, rgba(57, 124, 207, 0.05) 0%, rgba(234, 103, 98, 0.04) 100%),
    var(--canvas);
  font-family: var(--font);
  line-height: 1.5;
  letter-spacing: 0;
  overflow-x: hidden;
}

button,
input,
textarea {
  font: inherit;
  letter-spacing: 0;
}

button {
  -webkit-tap-highlight-color: transparent;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  clip-path: inset(50%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  color: var(--steel);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.33;
  text-transform: uppercase;
}

.login-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
  background: var(--canvas);
}

.login-card {
  display: grid;
  width: min(640px, 100%);
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-xxxl);
  background: var(--canvas);
  box-shadow: var(--shadow-panel);
}

.login-content {
  display: grid;
  align-content: center;
  gap: 24px;
  padding: 44px;
}

.login-brand {
  display: grid;
  gap: 14px;
  text-align: left;
}

.login-brand-main {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
}

.login-logo {
  display: block;
  width: 86px;
  height: 86px;
  border-radius: 24px;
  object-fit: cover;
  box-shadow: rgba(57, 124, 207, 0.18) 0 10px 22px;
}

.login-brand h1 {
  display: grid;
  gap: 2px;
  margin: 0;
  color: var(--ink-deep);
  font-size: 48px;
  font-weight: 500;
  line-height: 1.17;
}

.login-brand h1 span {
  display: block;
}

.title-blue {
  color: var(--primary);
}

.title-red {
  color: var(--accent);
}

.login-brand p,
.study-panel-header p,
.form-note {
  margin: 0;
  color: var(--steel);
  font-size: 16px;
}

.entry-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.entry-main-button {
  width: 100%;
}

.login-form {
  display: grid;
  gap: 16px;
}

.admin-login-form {
  padding-top: 4px;
}

.form-field {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.form-field input,
.form-field textarea {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 10px 12px;
  color: var(--ink);
  background: var(--canvas);
  outline: 0;
}

.form-field textarea {
  min-height: 104px;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus,
.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.primary-button,
.ghost-button,
.danger-button,
.nav-button,
.clear-search {
  min-height: 44px;
  border-radius: var(--radius-full);
  font-weight: 700;
  cursor: pointer;
  transition: transform 150ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.primary-button {
  border: 2px solid var(--ink-button);
  padding: 0 30px;
  color: var(--on-ink-button);
  background: var(--ink-button);
}

.primary-button:active,
.ghost-button:active,
.danger-button:active,
.nav-button:active,
.clear-search:active {
  transform: scale(0.98);
}

.ghost-button {
  border: 2px solid rgba(10, 19, 23, 0.12);
  padding: 0 24px;
  color: var(--ink-deep);
  background: transparent;
}

.compact-button {
  min-height: 38px;
  padding: 0 16px;
  font-size: 13px;
}

.danger-button {
  border: 2px solid rgba(234, 103, 98, 0.28);
  padding: 0 22px;
  color: var(--critical);
  background: var(--accent-soft);
}

.link-button {
  border: 0;
  padding: 0;
  color: var(--ink-deep);
  background: transparent;
  font-weight: 700;
  cursor: pointer;
}

.login-status,
.admin-status {
  min-height: 22px;
  margin: 0;
  color: var(--steel);
  font-size: 14px;
  line-height: 1.43;
}

.login-status.is-error,
.admin-status.is-error {
  color: var(--critical-strong);
}

.login-status.is-success,
.admin-status.is-success {
  color: var(--primary-deep);
}

.app-shell {
  min-height: 100vh;
  background: var(--surface-soft);
}

.admin-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 32px;
  border-bottom: 1px solid var(--hairline-soft);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
}

.topbar-title {
  display: grid;
  gap: 2px;
}

.topbar-title strong {
  color: var(--ink-deep);
  font-size: 16px;
  font-weight: 700;
}

.topbar-title span {
  color: var(--steel);
  font-size: 12px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.session-chip,
.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: var(--radius-full);
  padding: 0 24px;
  color: var(--primary-deep);
  background: var(--primary-soft);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.status-badge.is-critical {
  color: var(--canvas);
  background: var(--critical);
}

.admin-layout {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  align-items: start;
  min-height: calc(100vh - 72px);
}

.admin-layout > * {
  min-width: 0;
}

.admin-sidebar {
  position: sticky;
  top: 72px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: calc(100vh - 72px);
  min-height: 0;
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 24px 16px;
  border-right: 1px solid var(--hairline-soft);
  background: var(--canvas);
}

.nav-button {
  display: flex;
  align-items: center;
  width: 100%;
  border: 1px solid var(--hairline-soft);
  padding: 0 18px;
  color: var(--ink);
  background: var(--canvas);
  text-align: left;
}

.nav-button.is-active {
  border-color: var(--primary);
  color: var(--canvas);
  background: var(--primary);
}

.nav-button--practice {
  border-color: rgba(234, 103, 98, 0.34);
  color: var(--accent-deep);
}

.nav-button--practice:hover {
  border-color: var(--accent);
}

.page {
  min-width: 0;
  padding: 28px;
}

.study-panel {
  display: grid;
  gap: 22px;
  width: min(1120px, 100%);
  margin: 0 auto;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-xxl);
  padding: 28px;
  background: var(--canvas);
  box-shadow: var(--shadow-panel);
}

.study-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.form-header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.study-panel-header h2 {
  margin: 2px 0 6px;
  color: var(--ink-deep);
  font-size: 32px;
  font-weight: 500;
  line-height: 1.18;
}

.visa-form {
  display: grid;
  gap: 22px;
}

.question-sections {
  display: grid;
  gap: 20px;
}

.form-section {
  display: grid;
  gap: 16px;
  scroll-margin-top: 96px;
  padding: 20px;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-xl);
  background: var(--canvas);
}

.form-section-header {
  display: grid;
  gap: 4px;
}

.form-section-header h3 {
  margin: 0;
  color: var(--ink-deep);
  font-size: 22px;
  font-weight: 700;
}

.form-section-header p {
  margin: 0;
  color: var(--steel);
  font-size: 14px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field-grid .is-wide {
  grid-column: 1 / -1;
}

.required-mark {
  color: var(--critical);
  margin-left: 4px;
}

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.radio-choice {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-full);
  padding: 0 16px;
  color: var(--ink);
  background: var(--canvas);
  cursor: pointer;
}

.radio-choice input {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}

.field-error {
  min-height: 18px;
  margin: 0;
  color: var(--critical-strong);
  font-size: 12px;
}

.submit-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: 4px;
}

.form-note {
  display: grid;
  gap: 4px;
}

.draft-status {
  color: var(--primary-deep);
  font-size: 13px;
}

.submit-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.admin-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.summary-item {
  display: grid;
  gap: 6px;
  min-width: 0;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-xl);
  padding: 16px;
  background: linear-gradient(180deg, rgba(57, 124, 207, 0.08), rgba(255, 255, 255, 0.92));
}

.summary-item span {
  color: var(--steel);
  font-size: 13px;
  font-weight: 700;
}

.summary-item strong {
  min-width: 0;
  color: var(--ink-deep);
  font-size: 24px;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.search-area {
  display: grid;
}

.search-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-full);
  padding: 0 8px 0 16px;
  background: var(--canvas);
}

.search-symbol {
  color: var(--steel);
  font-size: 22px;
  line-height: 1;
}

.search-input {
  width: 100%;
  min-height: 48px;
  border: 0;
  color: var(--ink);
  background: transparent;
  outline: 0;
}

.clear-search {
  min-height: 34px;
  border: 0;
  padding: 0 16px;
  color: var(--primary-deep);
  background: var(--primary-soft);
}

.submissions-list {
  display: grid;
  gap: 14px;
}

.submission-item {
  display: grid;
  gap: 14px;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-xl);
  padding: 18px;
  background: var(--canvas);
}

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

.submission-title {
  display: grid;
  gap: 4px;
}

.submission-title strong {
  color: var(--ink-deep);
  font-size: 18px;
}

.submission-title span,
.submission-meta {
  color: var(--steel);
  font-size: 13px;
}

.answer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.answer-cell {
  display: grid;
  gap: 4px;
  min-width: 0;
  border-top: 1px solid var(--hairline-soft);
  padding-top: 10px;
}

.answer-cell dt {
  color: var(--steel);
  font-size: 12px;
  font-weight: 700;
}

.answer-cell dd {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.empty-state {
  margin: 0;
  border: 1px dashed var(--hairline);
  border-radius: var(--radius-xl);
  padding: 26px;
  color: var(--steel);
  text-align: center;
}

@media (max-width: 920px) {
  .admin-topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding: 18px;
  }

  .admin-layout {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: static;
    height: auto;
    min-height: auto;
    max-height: none;
    overflow-y: visible;
    border-right: 0;
    border-bottom: 1px solid var(--hairline-soft);
    padding: 14px;
  }

  .page {
    padding: 16px;
  }

  .field-grid,
  .admin-summary,
  .answer-grid {
    grid-template-columns: 1fr;
  }

  .study-panel-header,
  .submit-bar,
  .submission-head {
    flex-direction: column;
    align-items: stretch;
  }

  .form-header-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 680px) {
  .login-shell {
    padding: 16px;
  }

  .login-content {
    padding: 24px;
  }

  .login-brand-main {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 14px;
  }

  .login-logo {
    width: 64px;
    height: 64px;
    border-radius: 18px;
  }

  .login-brand h1 {
    font-size: 32px;
  }

  .entry-actions {
    grid-template-columns: 1fr;
  }

  .study-panel {
    padding: 18px;
    border-radius: var(--radius-xl);
  }

  .study-panel-header h2 {
    font-size: 26px;
  }

  .form-section {
    padding: 16px;
  }

  .submit-actions,
  .primary-button,
  .ghost-button,
  .danger-button {
    width: 100%;
  }

  .form-header-actions,
  .form-header-actions .status-badge,
  .form-header-actions .compact-button {
    width: 100%;
  }
}