:root {
  --bg: #edf6f2;
  --bg-strong: #d9eee4;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --ink: #173133;
  --muted: #5c7474;
  --line: rgba(23, 49, 51, 0.1);
  --accent: #0f766e;
  --accent-strong: #0b5a54;
  --accent-soft: #d7f2ea;
  --success: #15803d;
  --success-soft: #dcfce7;
  --warning: #b45309;
  --warning-soft: #fef3c7;
  --danger: #c2410c;
  --danger-soft: #ffedd5;
  --shadow: 0 24px 60px rgba(23, 49, 51, 0.12);
  --shadow-soft: 0 16px 32px rgba(23, 49, 51, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.12), transparent 22%),
    linear-gradient(180deg, #f6fbf9 0%, var(--bg) 55%, #e7f2ed 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.25) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.38), transparent 75%);
}

.page-shell {
  position: relative;
  z-index: 1;
}

.hero,
.layout,
.footer {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.hero {
  padding: 28px 0 22px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid rgba(15, 118, 110, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-soft);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 360px);
  gap: 22px;
  margin-top: 18px;
}

.hero__content,
.hero__panel,
.panel,
.metric-card,
.result-card,
.plan-card {
  border: 1px solid rgba(255, 255, 255, 0.75);
  background: var(--surface);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.hero__content {
  padding: 34px;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.hero__content::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  right: -60px;
  top: -60px;
  background: radial-gradient(circle, rgba(15, 118, 110, 0.16), transparent 70%);
}

.hero__panel {
  padding: 28px;
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Sora", sans-serif;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 14ch;
  font-size: clamp(2.2rem, 4vw, 4rem);
  line-height: 1.02;
}

h2 {
  font-size: clamp(1.35rem, 1.8vw, 1.8rem);
}

h3 {
  font-size: 1.05rem;
}

.hero__lead,
.section-header p,
.input-group span,
.result-card p,
.plan-step p,
.status-message p,
.footer p {
  color: var(--muted);
}

.hero__lead {
  max-width: 60ch;
  margin: 16px 0 0;
  font-size: 1.04rem;
  line-height: 1.7;
}

.hero__highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.highlight,
.metric-card__badge,
.tag,
.timeline-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
}

.highlight {
  background: rgba(15, 118, 110, 0.12);
  color: var(--accent-strong);
}

.panel-label {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero__target {
  display: grid;
  gap: 6px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.14), rgba(34, 197, 94, 0.16)),
    var(--surface-strong);
  border: 1px solid rgba(15, 118, 110, 0.14);
}

.target__value {
  font-family: "Sora", sans-serif;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--accent-strong);
}

.target__copy {
  font-size: 0.98rem;
  line-height: 1.5;
  color: var(--muted);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.hero__stat {
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(23, 49, 51, 0.08);
}

.hero__stat strong {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
}

.hero__stat span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.82rem;
}

.layout {
  display: grid;
  gap: 20px;
  padding-bottom: 36px;
}

.panel {
  padding: 26px;
  border-radius: var(--radius-xl);
}

.panel--form {
  position: relative;
  overflow: hidden;
}

.panel--form::before {
  content: "";
  position: absolute;
  inset: auto -60px -90px auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.14), transparent 68%);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 22px;
}

.section-header--compact {
  margin-bottom: 18px;
}

.section-header p {
  max-width: 52ch;
  margin: 0;
  line-height: 1.6;
}

.calculator-form {
  position: relative;
  z-index: 1;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.input-group {
  display: grid;
  gap: 8px;
}

.input-group span {
  font-size: 0.92rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  padding: 14px 14px;
  border: 1px solid rgba(23, 49, 51, 0.14);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  font: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

input:focus,
select:focus {
  border-color: rgba(15, 118, 110, 0.5);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
  transform: translateY(-1px);
}

.month-selector {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid rgba(23, 49, 51, 0.08);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(240, 249, 244, 0.88));
}

.month-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 10px;
}

.month-pill {
  position: relative;
  display: block;
}

.month-pill input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.month-pill span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px;
  border-radius: 999px;
  border: 1px solid rgba(23, 49, 51, 0.12);
  background: rgba(255, 255, 255, 0.86);
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.month-pill input:checked + span {
  border-color: rgba(15, 118, 110, 0.26);
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.16), rgba(34, 197, 94, 0.14));
  color: var(--accent-strong);
  transform: translateY(-2px);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  padding: 14px 18px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 14px 24px rgba(15, 118, 110, 0.22);
}

.btn--secondary {
  color: #fff;
  background: linear-gradient(135deg, #166534, var(--success));
  box-shadow: 0 14px 24px rgba(21, 128, 61, 0.18);
}

.btn--ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(23, 49, 51, 0.1);
}

.kpi-grid,
.results-grid,
.plan-grid,
.visual-grid,
.insight-grid {
  display: grid;
  gap: 16px;
}

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

.metric-card {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.metric-card__label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.metric-card__label span {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.metric-card__value {
  font-family: "Sora", sans-serif;
  font-size: clamp(1.55rem, 2.2vw, 2.1rem);
  line-height: 1.05;
}

.metric-card__detail {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.metric-card__badge {
  background: rgba(15, 118, 110, 0.1);
  color: var(--accent-strong);
}

.metric-card__badge--success {
  background: var(--success-soft);
  color: var(--success);
}

.metric-card__badge--warning {
  background: var(--warning-soft);
  color: var(--warning);
}

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

.result-card {
  padding: 20px;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.result-card::after {
  content: "";
  position: absolute;
  inset: auto -30px -40px auto;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15, 118, 110, 0.08), transparent 70%);
}

.result-card__top {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: start;
  margin-bottom: 14px;
}

.result-card__eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-card h3 {
  margin-top: 6px;
  max-width: 20ch;
}

.tag {
  white-space: nowrap;
}

.tag--danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.tag--warning {
  background: var(--warning-soft);
  color: var(--warning);
}

.tag--success {
  background: var(--success-soft);
  color: var(--success);
}

.value-stack {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 8px;
}

.value-stack strong {
  font-family: "Sora", sans-serif;
  font-size: 1.55rem;
  line-height: 1.15;
}

.value-stack small {
  color: var(--muted);
  font-size: 0.85rem;
}

.comparison-note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(23, 49, 51, 0.08);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.comparison-note strong {
  color: var(--success);
}

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

.chart-panel canvas {
  width: 100% !important;
  height: 320px !important;
}

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

.plan-card {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.plan-card__header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 14px;
}

.timeline-badge {
  background: rgba(15, 118, 110, 0.1);
  color: var(--accent-strong);
}

.plan-card > p {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.6;
}

.plan-steps {
  display: grid;
  gap: 12px;
}

.plan-step {
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(248, 252, 250, 0.92);
  border: 1px solid rgba(23, 49, 51, 0.08);
}

.plan-step__top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.plan-step__top strong {
  font-size: 0.96rem;
}

.plan-step__top span {
  color: var(--success);
  font-size: 0.86rem;
  font-weight: 800;
}

.plan-step p {
  margin: 8px 0 0;
  font-size: 0.9rem;
  line-height: 1.55;
}

.insight-grid {
  grid-template-columns: 1.05fr 0.95fr;
}

.status-message {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.14), rgba(255, 255, 255, 0.96));
  border: 1px solid rgba(15, 118, 110, 0.14);
  font-size: 1rem;
  line-height: 1.7;
}

.status-message--success {
  background: linear-gradient(135deg, rgba(21, 128, 61, 0.14), rgba(255, 255, 255, 0.96));
  border-color: rgba(21, 128, 61, 0.14);
}

.status-message--warning {
  background: linear-gradient(135deg, rgba(180, 83, 9, 0.14), rgba(255, 255, 255, 0.96));
  border-color: rgba(180, 83, 9, 0.14);
}

.status-message--danger {
  background: linear-gradient(135deg, rgba(194, 65, 12, 0.12), rgba(255, 255, 255, 0.96));
  border-color: rgba(194, 65, 12, 0.16);
}

.savings-breakdown {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.phase-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(23, 49, 51, 0.08);
}

.phase-card strong {
  display: block;
  font-family: "Sora", sans-serif;
  font-size: 1.15rem;
}

.phase-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.5;
}

.tips-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.tips-list li {
  margin-bottom: 12px;
  line-height: 1.65;
}

.footer {
  padding: 8px 0 28px;
  text-align: center;
}

.footer p {
  margin: 0;
  font-size: 0.9rem;
}

.fade-rise {
  animation: fadeRise 0.55s ease both;
}

@keyframes fadeRise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .hero__grid,
  .visual-grid,
  .insight-grid,
  .plan-grid,
  .results-grid,
  .kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .month-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .hero,
  .layout,
  .footer {
    width: min(calc(100% - 20px), var(--container));
  }

  .hero__grid,
  .visual-grid,
  .insight-grid,
  .plan-grid,
  .results-grid,
  .kpi-grid,
  .field-grid,
  .hero__stats,
  .savings-breakdown {
    grid-template-columns: 1fr;
  }

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

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

  .panel,
  .hero__content,
  .hero__panel {
    padding: 20px;
  }

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

  .btn {
    width: 100%;
  }

  .chart-panel canvas {
    height: 280px !important;
  }
}