:root {
  --brand-green: #a5be3e;
  --brand-green-600: #7f9430;
  --brand-yellow: #f0cb32;
  --accent-orange: #ff9900;

  --bg-page: #f7faf6;
  --bg-alt: #f1f5ec;
  --card-bg: #ffffff;
  --text: #1f2937;
  --muted: var(--rpds-color-secondary);
  --border-color: #dde5d5;

  --surface-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
  --soft-shadow: 0 2px 10px rgba(15, 23, 42, 0.05);
  --radius: 10px;

  --container-width: 1680px;
  --header-height: 72px;

  --sidebar-w: 276px;
  --sidebar-min: 210px;
  --sidebar-max: 420px;
  --resize-gutter: 10px;
  --top-gap: 0.5rem;

  --transition-fast: 160ms ease;
  --transition-std: 260ms cubic-bezier(0.2, 0.65, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

html {
  scroll-padding-top: calc(var(--workflow-header-height, var(--header-height)) + 0.5rem);
}

body {
  min-height: 100dvh;
  margin: 0;
  background: var(--bg-page);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main.container {
  max-width: min(100%, var(--container-width));
}

main.container-fluid {
  width: 100%;
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: min(100%, var(--container-width));
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(127, 148, 48, 0.25);
  outline-offset: 2px;
}

.card,
.custom-sticky-sidebar,
.main-panel {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--soft-shadow);
}

.card-title {
  font-weight: 700;
}

.text-brand-green {
  color: var(--brand-green-600) !important;
}

.text-brand-yellow {
  color: #d9b01b !important;
}

header.sticky-top {
  position: sticky;
  top: 0;
  z-index: 1040;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.06) !important;
}

.navbar-brand img {
  border-radius: 8px;
}

.navbar .nav-link {
  color: var(--text);
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.42rem 0.75rem !important;
  border-radius: 8px;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: var(--brand-green-600);
  background: rgba(127, 148, 48, 0.1);
}

.dropdown-menu {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: var(--surface-shadow);
  padding: 0.4rem;
}

.dropdown-item {
  border-radius: 8px;
  font-weight: 500;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background: rgba(165, 190, 62, 0.12);
  color: var(--brand-green-600);
}

.btn {
  border-radius: 10px;
  font-weight: 600;
  letter-spacing: 0;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

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

.btn-success {
  background: var(--brand-green-600);
  border-color: var(--brand-green-600);
  box-shadow: 0 4px 12px rgba(127, 148, 48, 0.22);
}

.btn-success:hover {
  filter: brightness(1.02);
  box-shadow: 0 6px 14px rgba(127, 148, 48, 0.28);
}

.btn-outline-success {
  border-color: rgba(127, 148, 48, 0.5);
  color: var(--brand-green-600);
}

.btn-outline-success:hover {
  background: rgba(127, 148, 48, 0.12);
  border-color: var(--brand-green-600);
  color: var(--brand-green-600);
}

.btn-outline-info {
  color: #0e7490;
  border-color: #0e7490;
}

.btn-outline-info:hover {
  background: #0e7490;
  border-color: #0e7490;
  color: #fff;
}

.btn-brand-green {
  background: var(--brand-green-600);
  color: #fff;
  border: 1px solid var(--brand-green-600);
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  box-shadow: none;
}

.btn-brand-green:hover {
  color: #fff;
  filter: brightness(1.03);
}

.form-control,
.form-select {
  border-radius: 8px;
  border: 1px solid #cfd8c3;
  padding: 0.62rem 0.82rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
  border-color: rgba(127, 148, 48, 0.5);
  box-shadow: 0 0 0 0.25rem rgba(127, 148, 48, 0.16);
}

.footer-link {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--brand-green-600);
}

.next-floating-btn {
  position: fixed;
  right: 28px;
  bottom: 22px;
  background: var(--brand-green-600);
  color: #fff;
  font-weight: 600;
  border-radius: 10px;
  padding: 10px 22px;
  text-decoration: none;
  box-shadow: var(--surface-shadow);
  z-index: 2000;
}

.explain-box {
  white-space: pre-line;
}

.hero-slideshow {
  position: relative;
  min-height: calc(130vh - var(--header-height));
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-slideshow .slideshow-layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transform: scale(1.02);
  will-change: opacity, transform;
  z-index: 0;
}

.hero-slideshow .slideshow-layer:nth-child(1) {
  animation: hero-fade 18s infinite;
  animation-delay: 0s;
}

.hero-slideshow .slideshow-layer:nth-child(2) {
  animation: hero-fade 18s infinite;
  animation-delay: 6s;
}

.hero-slideshow .slideshow-layer:nth-child(3) {
  animation: hero-fade 18s infinite;
  animation-delay: 12s;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 24, 18, 0.6), rgba(15, 23, 42, 0.45));
  z-index: 1;
}

.hero-content {
  max-width: min(1200px, 92vw);
  padding: 3.5rem 1rem;
  z-index: 2;
}

.hero-title {
  margin: 0;
  font-size: clamp(2rem, 3.6vw, 3.5rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.015em;
  text-shadow: 0 4px 14px rgba(0, 0, 0, 0.28);
}

.hero-title .line {
  display: block;
  animation: fade-up 850ms var(--transition-std) both;
}

.hero-title .line-2 {
  animation-delay: 160ms;
}

.hero-rotator {
  position: relative;
  margin: 1.15rem auto 0;
  width: min(92vw, 720px);
  min-height: 1.9rem;
  font-size: clamp(1rem, 1.35vw, 1.2rem);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
}

.hero-rotator .rotator-item {
  position: absolute;
  inset: 0;
  opacity: 0;
  animation: rotator 16s infinite;
}

.hero-rotator .rotator-item:nth-child(1) {
  animation-delay: 0s;
}

.hero-rotator .rotator-item:nth-child(2) {
  animation-delay: 4s;
}

.hero-rotator .rotator-item:nth-child(3) {
  animation-delay: 8s;
}

.hero-rotator .rotator-item:nth-child(4) {
  animation-delay: 12s;
}

.hero-cta .workflow-btn {
  min-width: 190px;
  border-radius: 10px;
  font-size: var(--rpds-text-body);
  padding: 0.68rem 1.05rem;
  animation: fade-up 700ms var(--transition-std) both;
}

.hero-cta .workflow-btn:nth-child(2) {
  animation-delay: 70ms;
}

.hero-cta .workflow-btn:nth-child(3) {
  animation-delay: 140ms;
}

.hero-cta .workflow-btn:nth-child(4) {
  animation-delay: 210ms;
}

.hero-cta .workflow-btn:nth-child(5) {
  animation-delay: 280ms;
}

.hero-cta .workflow-btn:nth-child(6) {
  animation-delay: 350ms;
}

#features .card,
#about .card,
#contact .card {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

#features .card:hover {
  transform: translateY(-4px);
  box-shadow: var(--surface-shadow);
}

#features .bi,
#about .bi {
  filter: drop-shadow(0 5px 14px rgba(17, 24, 39, 0.12));
}

blockquote {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: none;
}

.carousel-control-next-icon,
.carousel-control-prev-icon {
  filter: invert(36%) sepia(14%) saturate(1278%) hue-rotate(35deg) brightness(87%) contrast(89%);
}

#contact form {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: calc(var(--radius) + 2px);
  padding: clamp(1rem, 3vw, 1.6rem);
  box-shadow: var(--soft-shadow);
}

.full-height-row {
  align-items: flex-start;
  height: calc(100vh - var(--header-height) - 1.5rem);
}

#workflow-shell {
  display: grid !important;
  grid-template-areas: "sidebar gutter main" !important;
  grid-template-columns: var(--sidebar-w) var(--resize-gutter) 1fr !important;
  gap: 0 !important;
  height: calc(100vh - var(--header-height) - 1.5rem);
  width: 100%;
  max-width: 100%;
}

#workflow-shell > [class^="col-"],
#workflow-shell > [class*=" col-"] {
  flex: 0 0 auto !important;
  width: auto !important;
}

#rpds-sidebar {
  grid-area: sidebar !important;
  margin-top: var(--top-gap);
  background: #f6f9f3;
  border-right: 1px solid var(--border-color);
  border-radius: 10px;
}

#sidebar-resizer {
  grid-area: gutter !important;
  align-self: stretch;
  position: relative;
  height: 100%;
  width: var(--resize-gutter);
  cursor: col-resize;
  touch-action: none;
  background: transparent;
  box-shadow: inset -1px 0 0 rgba(15, 23, 42, 0.12);
  transition: width var(--transition-fast), background var(--transition-fast);
}

#sidebar-resizer:hover {
  width: calc(var(--resize-gutter) + 2px);
  background: rgba(127, 148, 48, 0.06);
}

header.sticky-top .workflow-sidebar-toggle {
  flex: none;
  width: 44px;
  height: 44px;
  margin-right: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: #ffffff;
  color: var(--brand-green-600);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.14);
}

header.sticky-top .workflow-sidebar-toggle i {
  font-size: 17px;
  line-height: 1;
}

header.sticky-top .workflow-sidebar-toggle:focus-visible {
  outline: 3px solid var(--brand-green-600);
  outline-offset: 2px;
}

body.workflow-body #rpds-sidebar {
  height: auto;
  max-height: calc(100dvh - var(--header-height) - 1rem);
  overflow-y: auto;
}

.left-col-wrap {
  position: sticky;
  top: calc(var(--header-height) + 0.5rem);
  height: 100%;
  max-height: 100%;
  overflow: auto;
}

.left-col-wrap::-webkit-scrollbar,
.main-col-wrap::-webkit-scrollbar {
  display: none;
}

.main-col-wrap {
  grid-area: main !important;
  min-width: 0 !important;
  margin-top: var(--top-gap);
  height: 100%;
  max-height: 100%;
  overflow: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.custom-sticky-sidebar {
  padding: 0.35rem 0;
}

.list-group-item {
  border: 0;
  background: transparent;
  color: var(--text);
  border-radius: 8px !important;
  padding: 0.52rem 0.72rem;
  transition: background var(--transition-fast), color var(--transition-fast);
  font-size: var(--rpds-text-body);
  line-height: 1.35;
}

.list-group-item:hover {
  background: rgba(127, 148, 48, 0.08);
}

.list-group-item.active {
  background: rgba(127, 148, 48, 0.12);
  color: var(--brand-green-600);
  font-weight: 700;
  border-left: 3px solid var(--brand-green-600);
}

#rpds-sidebar .list-group-item i {
  width: 16px;
  text-align: center;
}

#rpds-sidebar .card {
  border-radius: 8px;
}

#rpds-sidebar .small {
  font-size: var(--rpds-text-small);
}

#rpds-sidebar .fw-semibold {
  font-size: var(--rpds-text-label);
}

#rpds-sidebar .d-flex.flex-column.gap-3 {
  gap: 0.65rem !important;
}

#regression-content {
  min-height: 520px;
}

#regression-content img,
#regression-content canvas,
#regression-content iframe,
#regression-content .plotly-graph-div {
  max-width: 100%;
  height: auto;
}

.progress {
  background: #e8eee0;
  border-radius: 999px;
}

.progress .progress-bar.bg-brand-green {
  background: var(--brand-green-600) !important;
  font-weight: 700;
}

.sidebar-collapsed #workflow-shell {
  grid-template-areas: "main" !important;
  grid-template-columns: 1fr !important;
}

.sidebar-collapsed #rpds-sidebar,
.sidebar-collapsed #sidebar-resizer {
  display: none !important;
}

.sidebar-collapsed .main-col-wrap {
  display: block !important;
}

.rpds-anim-card {
  transform-origin: center;
  will-change: transform, opacity;
}

@keyframes rpds-expand {
  from {
    transform: scale(0.985) translateY(8px);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

@keyframes rpds-collapse {
  from {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
  to {
    transform: scale(0.985) translateY(8px);
    opacity: 0;
  }
}

.rpds-is-expanding .rpds-anim-card {
  animation: rpds-expand 320ms cubic-bezier(0.2, 0.9, 0.2, 1) both;
}

.rpds-is-collapsing .rpds-anim-card {
  animation: rpds-collapse 260ms cubic-bezier(0.3, 0, 0.25, 1) both;
}

.eda-page .plot-card {
  padding: 0.4rem;
}

.eda-page .plot-frame {
  width: 100% !important;
  height: clamp(420px, 58vh, 820px) !important;
  border: 0;
  display: block;
}

.eda-page .plot-caption {
  margin-top: 0.5rem;
  min-height: 48px;
  font-size: var(--rpds-text-body);
  color: var(--text);
  padding: 0.6rem 0.7rem;
  border: 1px solid #e7eadf;
  border-radius: 8px;
  background: var(--card-bg);
  box-shadow: none;
}

.eda-page .explain-result {
  margin-top: 0.3rem;
  font-size: var(--rpds-text-label);
  color: var(--brand-green-600);
  white-space: pre-wrap;
}

.eda-page .plot-actions {
  margin-top: 0.5rem;
  gap: 0.35rem;
}

.eda-page .small-btn {
  padding: 0.3rem 0.6rem;
  font-size: var(--rpds-text-label);
}

.fade-in {
  animation: fade-up 700ms ease both;
}

@keyframes hero-fade {
  0% {
    opacity: 0;
    transform: scale(1.02);
  }
  5% {
    opacity: 1;
    transform: scale(1);
  }
  33% {
    opacity: 1;
    transform: scale(1.01);
  }
  38% {
    opacity: 0;
    transform: scale(1.02);
  }
  100% {
    opacity: 0;
    transform: scale(1.02);
  }
}

@keyframes rotator {
  0%,
  19% {
    opacity: 0;
    transform: translateY(8px);
  }
  24%,
  44% {
    opacity: 1;
    transform: translateY(0);
  }
  50%,
  100% {
    opacity: 0;
    transform: translateY(-8px);
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body.modal-open #workflow-shell,
body.modal-open .left-col-wrap,
body.modal-open .main-col-wrap,
body.modal-open #rpds-sidebar,
body.modal-open #sidebar-resizer,
body.modal-open #sidebar-arrow {
  pointer-events: none !important;
}

body.modal-open .modal,
body.modal-open .modal *,
body.modal-open #editDatasetModal,
body.modal-open #editDatasetModal * {
  pointer-events: auto !important;
  z-index: 5000 !important;
}

@media (max-width: 991px) {
  .full-height-row,
  #workflow-shell {
    height: auto;
  }

  #workflow-shell {
    grid-template-areas: "sidebar" "main" !important;
    grid-template-columns: 1fr !important;
  }

  #sidebar-resizer {
    display: none !important;
  }

  body.workflow-body #rpds-sidebar {
    position: fixed;
    top: var(--workflow-header-height, var(--header-height));
    left: 0;
    z-index: 1035;
    width: min(320px, calc(100vw - 3rem));
    height: calc(100dvh - var(--workflow-header-height, var(--header-height)));
    max-height: none;
    margin-top: 0;
    padding: 12px;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    box-shadow: var(--surface-shadow);
    overflow-y: auto;
    overscroll-behavior: contain;
    visibility: hidden;
    transform: translateX(-100%);
    transition: transform var(--transition-fast), visibility var(--transition-fast);
  }

  body.workflow-body.mobile-sidebar-open #rpds-sidebar {
    visibility: visible;
    transform: translateX(0);
  }

  #workflow-sidebar-backdrop {
    position: fixed;
    inset: var(--workflow-header-height, var(--header-height)) 0 0;
    z-index: 1030;
    background: rgba(15, 23, 42, 0.4);
  }

  #workflow-sidebar-backdrop[hidden] {
    display: none;
  }

  .left-col-wrap,
  .main-col-wrap {
    position: static;
    height: auto;
    max-height: none;
    overflow: visible;
  }

  .hero-slideshow {
    min-height: calc(115vh - var(--header-height));
    padding: 2rem 1rem;
  }

  .hero-cta .workflow-btn {
    min-width: 170px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.workflow-body #rpds-sidebar {
    transition: none;
  }
}

@media (min-width: 1600px) {
  .container {
    max-width: 92vw;
  }

  .hero-content {
    max-width: min(1320px, 90vw);
  }
}

@media (max-width: 767px) {
  .hero-title {
    font-size: clamp(1.75rem, 8vw, 2.35rem);
  }

  .hero-rotator {
    min-height: 2.2rem;
  }

  .eda-page .row.g-3 > [class*="col-"] {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .hero-slideshow .slideshow-layer {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}