:root {
  --bg-dark: #10192d;
  --bg-dark-soft: #1a2741;
  --bg-panel: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #eef3fb;
  --surface-strong: #1b2740;
  --line: rgba(124, 148, 188, 0.2);
  --line-strong: rgba(124, 148, 188, 0.34);
  --text: #172033;
  --muted: #7b88a1;
  --muted-strong: #5f6c84;
  --accent: #1f5eff;
  --accent-soft: rgba(31, 94, 255, 0.12);
  --success: #1f9d67;
  --warning: #efb849;
  --danger: #d45353;
  --white: #ffffff;
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-soft: 0 20px 50px rgba(13, 23, 45, 0.08);
  --shadow-strong: 0 28px 80px rgba(8, 16, 33, 0.36);
  --font-display: "Franklin Gothic Demi", "Bahnschrift", "Trebuchet MS", sans-serif;
  --font-body: "Bahnschrift", "Aptos", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(54, 88, 151, 0.18), transparent 38%),
    linear-gradient(180deg, #edf2f8 0%, #f7f9fc 100%);
}

body.is-login-view {
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

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

button:disabled {
  cursor: wait;
  opacity: 0.7;
  transform: none;
}

.login-screen {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(10, 18, 34, 0.52), rgba(16, 25, 45, 0.84)),
    radial-gradient(circle at 20% 20%, rgba(85, 119, 180, 0.2), transparent 30%),
    linear-gradient(125deg, #0f1728 0%, #16233c 45%, #1b2740 100%);
}

.login-screen__backdrop,
.login-screen__grid {
  position: absolute;
  inset: 0;
}

.login-screen__backdrop::before,
.login-screen__backdrop::after {
  content: "";
  position: absolute;
  border-radius: 40px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.login-screen__backdrop::before {
  top: 8%;
  left: -5%;
  width: 44vw;
  height: 72vh;
  transform: skew(-8deg);
}

.login-screen__backdrop::after {
  right: -10%;
  bottom: -8%;
  width: 38vw;
  height: 64vh;
  transform: skew(6deg);
}

.login-screen__grid {
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 0.8px, transparent 0.8px);
  background-size: 22px 22px;
  opacity: 0.22;
}

.login-card-wrap {
  position: relative;
  z-index: 1;
  width: min(100%, 460px);
  padding: 1.5rem;
}

.login-card {
  padding: 2rem;
  border: 1px solid rgba(182, 198, 228, 0.16);
  border-radius: 28px;
  color: var(--white);
  background: rgba(22, 33, 56, 0.84);
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(12px);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.login-brand__mark,
.sidebar__logo {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 14px;
  font-family: var(--font-display);
  font-weight: 700;
}

.login-brand__mark {
  color: #16233c;
  background: var(--white);
}

.login-brand h1,
.topbar h2,
.panel h2,
.overview-card h3 {
  margin: 0;
  font-family: var(--font-display);
}

.login-brand h1 {
  font-size: 1.65rem;
  letter-spacing: -0.04em;
}

.login-brand p {
  margin: 0.3rem 0 0;
  color: rgba(237, 242, 252, 0.72);
  line-height: 1.5;
}

.login-form {
  display: grid;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

.field span {
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.login-form .field span {
  color: rgba(240, 245, 255, 0.8);
}

input,
select,
textarea {
  width: 100%;
  min-height: 3.35rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--text);
  background: var(--surface);
  transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.login-form input {
  color: var(--white);
  background: rgba(12, 20, 37, 0.44);
  border-color: rgba(181, 199, 230, 0.14);
}

input::placeholder,
textarea::placeholder {
  color: #9aa7bf;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(31, 94, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.14);
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0.9rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button--primary {
  color: var(--white);
  background: linear-gradient(135deg, #1f5eff 0%, #1948c5 100%);
}

.button--secondary {
  color: var(--text);
  background: #eaf0fb;
  border-color: #d6e0f1;
}

.button--ghost {
  color: var(--text);
  background: var(--white);
  border-color: #d3dde9;
}

.button--light {
  color: #16233c;
  background: var(--white);
}

.button--full {
  width: 100%;
}

.feedback {
  min-height: 1.4rem;
  margin: 0.1rem 0 0;
  font-weight: 600;
}

.feedback.is-success {
  color: var(--success);
}

.feedback.is-error {
  color: var(--danger);
}

.feedback--login {
  color: rgba(240, 245, 255, 0.78);
}

.feedback--login.is-success {
  color: #8de3bb;
}

.feedback--login.is-error {
  color: #ffb1b1;
}

.workspace-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1.5rem 1rem;
  border-right: 1px solid rgba(124, 148, 188, 0.18);
  background: linear-gradient(180deg, #ffffff 0%, #f5f8fc 100%);
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.25rem 0.35rem;
}

.sidebar__logo {
  color: var(--white);
  background: #18243a;
}

.sidebar__brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.sidebar__brand span {
  color: var(--muted);
  font-size: 0.92rem;
}

.sidebar__nav {
  display: grid;
  gap: 1.6rem;
}

.sidebar__group {
  display: grid;
  gap: 0.45rem;
}

.sidebar__label {
  padding: 0 0.65rem;
  color: #97a4ba;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sidebar__link {
  display: block;
  padding: 0.9rem 0.95rem;
  border-radius: 14px;
  color: var(--muted-strong);
  text-decoration: none;
  font-weight: 700;
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.sidebar__link:hover,
.sidebar__link:focus-visible {
  color: var(--accent);
  background: #edf3ff;
  transform: translateX(2px);
}

.sidebar__link.is-active {
  color: var(--accent);
  background: #e7efff;
}

.workspace-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.4rem 2rem;
  border-bottom: 1px solid rgba(124, 148, 188, 0.16);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px);
}

.topbar__eyebrow,
.panel__eyebrow,
.overview-card__eyebrow {
  margin: 0 0 0.3rem;
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.topbar h2 {
  font-size: clamp(1.7rem, 2.2vw, 2.2rem);
  letter-spacing: -0.04em;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar__pill,
.topbar__button {
  min-height: 2.8rem;
  padding: 0.75rem 1rem;
  border: 1px solid #d5dfec;
  border-radius: 999px;
  background: var(--white);
  font-weight: 700;
}

.topbar__pill {
  color: var(--muted-strong);
}

.topbar__button {
  cursor: pointer;
  color: var(--text);
}

.content-area {
  padding: 1.6rem 2rem 2rem;
}

.overview {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.overview-card {
  padding: 1.3rem 1.35rem;
  border: 1px solid rgba(124, 148, 188, 0.18);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow-soft);
}

.overview-card--highlight {
  grid-column: span 2;
  background: linear-gradient(135deg, #192741 0%, #243555 100%);
  color: var(--white);
}

.overview-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.overview-card__value {
  display: inline-flex;
  align-items: center;
  min-height: 2.1rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 700;
}

.overview-card--highlight .overview-card__eyebrow,
.overview-card--highlight .overview-card__text {
  color: rgba(236, 243, 255, 0.72);
}

.overview-card h3 {
  font-size: 1.12rem;
  letter-spacing: -0.03em;
}

.overview-card__metric {
  margin: 1rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 2.35rem;
  font-weight: 700;
  letter-spacing: -0.06em;
}

.overview-card__text {
  margin: 0.4rem 0 0;
  color: var(--muted-strong);
  line-height: 1.58;
}

.hero-card__status-line {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 1.1rem 0 0;
}

.status-dot {
  width: 0.8rem;
  height: 0.8rem;
  flex: 0 0 auto;
  border-radius: 50%;
  color: var(--warning);
  background: currentColor;
  box-shadow: 0 0 0 0 currentColor;
  animation: pulse 2s infinite;
}

.status-dot.is-success {
  color: var(--success);
}

.status-dot.is-error {
  color: var(--danger);
}

.dashboard {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(380px, 0.94fr);
  gap: 1.5rem;
}

.panel {
  overflow: hidden;
  border: 1px solid rgba(124, 148, 188, 0.18);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-soft);
}

.panel__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.35rem 1.45rem;
  color: var(--white);
  background: linear-gradient(135deg, #18253c 0%, #223453 100%);
}

.panel__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.6rem 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
}

.panel__badge--accent {
  background: rgba(255, 255, 255, 0.14);
}

.panel__body {
  padding: 1.4rem;
}

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

.field-grid .field span {
  color: var(--text);
}

.form-note {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid #d9e3f0;
  border-radius: var(--radius-md);
  color: var(--muted-strong);
  background: #f4f8fd;
  line-height: 1.62;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.form-actions--compact {
  margin-top: 1rem;
}

.upload-box {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1rem;
  padding: 1rem;
  border: 1px solid #d9e3f0;
  border-radius: var(--radius-lg);
  background: #f7faff;
}

.upload-box__label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.upload-box__title {
  font-weight: 700;
}

.upload-box__hint {
  color: var(--muted);
  line-height: 1.52;
}

.formula-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.9rem;
  margin: 1.2rem 0;
}

.summary-card {
  padding: 1rem;
  border: 1px solid #dbe4f1;
  border-radius: 18px;
  background: #f8fbff;
}

.summary-card__label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.formula-table-wrap {
  overflow: auto;
  border: 1px solid #dbe4f1;
  border-radius: var(--radius-lg);
  background: var(--white);
}

.formula-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
}

.formula-table th,
.formula-table td {
  padding: 0.95rem 0.85rem;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid #e7edf6;
}

.formula-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #eff4fb;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.formula-table tbody tr:hover {
  background: #f9fbff;
}

.formula-table__empty td {
  color: var(--muted);
  text-align: center;
}

.table-action {
  min-height: 2.7rem;
  padding: 0.65rem 0.95rem;
  border: 1px solid #d4deec;
  border-radius: var(--radius-sm);
  color: var(--text);
  background: #edf3ff;
  font-weight: 700;
  cursor: pointer;
}

.table-action:hover {
  background: #e4edff;
}

.formula-results {
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid #dbe4f1;
}

.formula-results__header {
  margin-bottom: 0.9rem;
}

.formula-results__eyebrow {
  margin-bottom: 0.2rem;
}

.formula-results__header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.formula-results__list {
  display: grid;
  gap: 0.85rem;
}

.formula-results__empty {
  margin: 0;
  padding: 1rem 1.1rem;
  border: 1px dashed #cfdae9;
  border-radius: 18px;
  color: var(--muted);
  background: #f9fbff;
}

.formula-result {
  overflow: hidden;
  border: 1px solid #dbe4f1;
  border-radius: 20px;
  background: #fbfdff;
}

.formula-result[open] {
  background: var(--white);
  box-shadow: 0 12px 28px rgba(18, 30, 52, 0.06);
}

.formula-result__summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

.formula-result__summary::-webkit-details-marker {
  display: none;
}

.formula-result__title {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.formula-result__title strong {
  font-size: 1rem;
}

.formula-result__meta {
  color: var(--muted);
  font-size: 0.88rem;
}

.formula-result__summary-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.formula-result__pill {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.formula-result__count {
  color: var(--muted-strong);
  font-size: 0.85rem;
  font-weight: 700;
}

.formula-result__body {
  padding: 0 1.1rem 1.1rem;
}

.formula-result__toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.formula-result__toolbar p {
  margin: 0;
  color: var(--muted-strong);
}

.formula-result__table-wrap {
  overflow: auto;
  border: 1px solid #e3eaf4;
  border-radius: 16px;
}

.formula-result__table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--white);
}

.formula-result__table th,
.formula-result__table td {
  padding: 0.8rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid #ebf0f7;
}

.formula-result__table th {
  background: #f1f5fb;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.app-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.app-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 18, 34, 0.5);
  backdrop-filter: blur(6px);
}

.app-modal__card {
  position: relative;
  z-index: 1;
  width: min(100%, 430px);
  padding: 1.8rem 1.5rem 1.4rem;
  border: 1px solid #d8e2ef;
  border-radius: var(--radius-xl);
  background: var(--white);
  box-shadow: 0 28px 60px rgba(12, 20, 36, 0.18);
  text-align: center;
  animation: modal-enter 180ms ease;
}

.app-modal__card--success {
  box-shadow: 0 28px 60px rgba(31, 157, 103, 0.12);
}

.app-modal__card--error {
  box-shadow: 0 28px 60px rgba(212, 83, 83, 0.12);
}

.app-modal__close {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  border: 1px solid #d6dfec;
  border-radius: 50%;
  color: var(--text);
  background: #f4f8fd;
  font-size: 1.2rem;
  cursor: pointer;
}

.app-modal__icon {
  display: grid;
  place-items: center;
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  color: var(--white);
  font-weight: 800;
}

.app-modal__card--success .app-modal__icon {
  background: var(--success);
}

.app-modal__card--error .app-modal__icon {
  background: var(--danger);
}

.app-modal__title {
  margin: 0 0 0.55rem;
  font-size: 1.55rem;
  font-weight: 700;
}

.app-modal__message {
  margin: 0 0 1.25rem;
  color: var(--muted);
  line-height: 1.62;
}

.app-modal__button {
  min-width: 10rem;
}

@keyframes modal-enter {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 currentColor;
  }
  70% {
    box-shadow: 0 0 0 10px transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

@media (max-width: 1280px) {
  .overview {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .overview-card--highlight {
    grid-column: span 2;
  }
}

@media (max-width: 1120px) {
  .workspace-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid rgba(124, 148, 188, 0.18);
  }

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

@media (max-width: 720px) {
  body.is-login-view {
    overflow: auto;
  }

  .login-card-wrap {
    padding: 1rem;
  }

  .login-card {
    padding: 1.5rem;
  }

  .login-brand {
    align-items: flex-start;
  }

  .topbar,
  .content-area {
    padding-left: 1rem;
    padding-right: 1rem;
  }

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

  .topbar__actions,
  .form-actions {
    flex-direction: column;
  }

  .topbar__pill,
  .topbar__button,
  .button,
  .table-action {
    width: 100%;
  }

  .overview,
  .field-grid,
  .formula-summary {
    grid-template-columns: 1fr;
  }

  .formula-result__summary,
  .formula-result__toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .formula-result__summary-right {
    justify-content: flex-start;
  }

  .overview-card--highlight {
    grid-column: auto;
  }

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