@import url("https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&display=swap");

:root {
  --bg: #f4f7f9;
  --paper: #ffffff;
  --paper-soft: #f8fbfc;
  --ink: #16232e;
  --muted: #60717f;
  --line: #d9e3ea;
  --brand: #0f766e;
  --brand-dark: #164e63;
  --blue: #2563eb;
  --green: #15945f;
  --amber: #b7791f;
  --rose: #be3455;
  --violet: #6d5bd0;
  --shadow: 0 18px 45px rgba(22, 35, 46, .09);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(15, 118, 110, .10), transparent 30%),
    linear-gradient(180deg, #fbfdfe 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: "Cairo", "Segoe UI", Tahoma, Arial, sans-serif;
  line-height: 1.8;
}

a { color: inherit; text-decoration: none; }

.shell {
  display: grid;
  grid-template-columns: 304px minmax(0, 1fr);
  min-height: 100vh;
}

.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px;
  overflow-y: auto;
  background: #ffffffd9;
  backdrop-filter: blur(18px);
  border-left: 1px solid var(--line);
}

.rail-brand {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.logo {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  font-weight: 900;
  letter-spacing: 0;
}

.rail-brand strong { display: block; font-size: 18px; color: var(--brand-dark); }
.rail-brand span { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; }

.search-box { margin: 18px 0; }
.search-box input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  outline: none;
}

.nav-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: #334756;
  font-weight: 700;
}

.nav-list a:hover,
.nav-list a.active {
  background: #eaf6f4;
  border-color: #bfe4df;
  color: var(--brand-dark);
}

.rail-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

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

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(330px, .95fr);
  gap: 28px;
  align-items: center;
  min-height: 520px;
  padding: 42px;
  border-radius: var(--radius);
  overflow: hidden;
  color: #fff;
  box-shadow: var(--shadow);
  background:
    linear-gradient(135deg, rgba(15, 76, 95, .98), rgba(15, 118, 110, .94)),
    linear-gradient(90deg, rgba(255,255,255,.10) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,.10) 1px, transparent 1px);
  background-size: auto, 52px 52px, 52px 52px;
}

.hero.compact {
  min-height: 390px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  background: rgba(255,255,255,.12);
  color: #e4fffb;
  font-weight: 800;
  font-size: 13px;
}

h1 {
  margin: 18px 0 0;
  max-width: 860px;
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1.15;
  font-weight: 900;
}

.hero p {
  max-width: 760px;
  margin: 18px 0 0;
  color: #e7f7f6;
  font-size: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
}

.hero .btn {
  border-color: rgba(255,255,255,.32);
}

.btn.primary {
  background: #fff;
  color: var(--brand-dark);
  border-color: #fff;
}

.btn.dark {
  background: var(--brand-dark);
  color: #fff;
  border-color: var(--brand-dark);
}

.hero-board {
  display: grid;
  gap: 12px;
}

.kpi-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.kpi {
  min-height: 92px;
  padding: 14px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius);
  background: rgba(255,255,255,.13);
}

.kpi span { display: block; color: #d6efed; font-size: 12px; }
.kpi strong { display: block; margin-top: 6px; font-size: 24px; direction: ltr; }

.mini-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mini-node {
  min-height: 78px;
  padding: 13px;
  border: 1px solid rgba(255,255,255,.20);
  border-radius: var(--radius);
  background: rgba(255,255,255,.11);
}

.mini-node b { display: block; }
.mini-node span { color: #d6efed; font-size: 12px; }

.section {
  margin-top: 26px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.86);
  box-shadow: 0 12px 30px rgba(22, 35, 46, .05);
}

.manual-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
  align-items: start;
}

.toc-card {
  position: sticky;
  top: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 30px rgba(22, 35, 46, .06);
}

.toc-card h3 {
  font-size: 16px;
  margin-bottom: 12px;
}

.toc-card a {
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid #edf3f5;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.toc-card a:last-child { border-bottom: 0; }

.manual-section {
  margin-top: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.92);
}

.manual-section:first-child { margin-top: 0; }

.manual-section h2 {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.manual-section h3 {
  margin-top: 18px;
}

.scenario {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}

.scenario-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: #ecf6f4;
  border-bottom: 1px solid var(--line);
}

.scenario-head b {
  color: var(--brand-dark);
  font-size: 17px;
}

.scenario-body {
  padding: 16px;
}

.steps {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: manualStep;
}

.steps li {
  position: relative;
  padding: 12px 52px 12px 14px;
  border: 1px solid #e2ebef;
  border-radius: var(--radius);
  background: var(--paper-soft);
}

.steps li::before {
  counter-increment: manualStep;
  content: counter(manualStep);
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 900;
  direction: ltr;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.role-card {
  min-height: 150px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.role-card b {
  display: block;
  color: var(--brand-dark);
  font-size: 16px;
  margin-bottom: 8px;
}

.role-card ul,
.checklist {
  margin: 0;
  padding: 0;
  list-style: none;
}

.role-card li,
.checklist li {
  position: relative;
  padding-right: 18px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.role-card li::before,
.checklist li::before {
  content: "";
  position: absolute;
  right: 0;
  top: .75em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
}

.callout {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid #bfe4df;
  background: #edf9f7;
  color: #1b5653;
}

.callout.warning {
  border-color: #efd6a5;
  background: #fff8e8;
  color: #715014;
}

.swimlane {
  display: grid;
  grid-template-columns: 170px repeat(4, minmax(160px, 1fr));
  gap: 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  margin-top: 16px;
}

.swimlane div {
  min-height: 76px;
  padding: 12px;
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.swimlane div:nth-child(5n) { border-left: 0; }
.swimlane .lane-head {
  background: #ecf6f4;
  color: var(--brand-dark);
  font-weight: 900;
}

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

.screen {
  min-height: 118px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff, #f9fcfd);
}

.screen b { color: var(--brand-dark); }
.screen p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
}

h2 {
  margin: 0;
  color: var(--brand-dark);
  font-size: 30px;
  line-height: 1.25;
  font-weight: 900;
}

.section-head p,
.lead {
  margin: 8px 0 0;
  color: var(--muted);
  max-width: 850px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: #e7f6f3;
  color: var(--brand);
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

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

.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.feature-card,
.doc-card {
  position: relative;
  min-height: 188px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.feature-card:hover,
.doc-card:hover {
  transform: translateY(-3px);
  border-color: #b8d4d0;
  box-shadow: var(--shadow);
}

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

.pill-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: var(--radius);
  background: var(--brand);
  color: #fff;
  font-weight: 900;
  direction: ltr;
}

.pill-icon.blue { background: var(--blue); }
.pill-icon.green { background: var(--green); }
.pill-icon.amber { background: var(--amber); }
.pill-icon.rose { background: var(--rose); }
.pill-icon.violet { background: var(--violet); }
.pill-icon.dark { background: var(--brand-dark); }

h3 {
  margin: 0;
  color: var(--brand-dark);
  font-size: 20px;
  line-height: 1.35;
  font-weight: 900;
}

.feature-card p,
.doc-card p {
  margin: 8px 0 14px;
  color: var(--muted);
  font-size: 14px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 999px;
  background: #edf5f5;
  color: #3a5662;
  font-size: 12px;
  font-weight: 800;
}

.infographic {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  counter-reset: flow;
}

.flow-step {
  min-height: 164px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfc 100%);
}

.flow-step::before {
  counter-increment: flow;
  content: counter(flow);
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--brand-dark);
  color: #fff;
  direction: ltr;
  font-weight: 900;
}

.flow-step b { display: block; color: var(--brand-dark); }
.flow-step span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; }

.process-line {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.process-line .point {
  padding: 16px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  min-height: 128px;
}

.point .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--brand);
  margin-bottom: 10px;
}

.point b { color: var(--brand-dark); }
.point p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

th, td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  text-align: right;
  vertical-align: top;
  font-size: 14px;
}

th {
  background: #ecf6f4;
  color: var(--brand-dark);
  font-weight: 900;
}

tr:last-child td { border-bottom: 0; }

code {
  direction: ltr;
  display: inline-block;
  padding: 1px 6px;
  border-radius: 6px;
  background: #edf5f5;
  color: #16515a;
  font-family: Consolas, "Courier New", monospace;
  font-size: .92em;
}

.calc {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 18px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 18px;
}

label {
  display: block;
  margin-bottom: 12px;
  color: var(--brand-dark);
  font-weight: 800;
  font-size: 13px;
}

select,
input[type="number"] {
  width: 100%;
  height: 42px;
  margin-top: 5px;
  border: 1px solid #cbd8de;
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  padding: 0 10px;
  font: inherit;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.metric {
  min-height: 112px;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--brand-dark);
  color: #fff;
}

.metric span { display: block; color: #cde6e3; font-size: 12px; }
.metric strong { display: block; margin-top: 8px; font-size: 24px; direction: ltr; text-align: right; }

.empty {
  display: none;
  margin-top: 18px;
  padding: 18px;
  border: 1px dashed #a9c7c2;
  border-radius: var(--radius);
  color: var(--muted);
  background: #fff;
}

.footer {
  margin-top: 28px;
  padding: 18px 0 6px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 1120px) {
  .shell { grid-template-columns: 1fr; }
  .rail { position: relative; height: auto; }
  .nav-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero,
  .calc { grid-template-columns: 1fr; }
  .manual-layout,
  .grid,
  .grid.two,
  .grid.four,
  .infographic,
  .process-line,
  .role-grid,
  .screen-map { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .toc-card { position: relative; top: auto; }
}

@media (max-width: 680px) {
  .content { padding: 14px; }
  .hero,
  .section { padding: 20px; }
  .grid,
  .grid.two,
  .grid.four,
  .infographic,
  .process-line,
  .metrics,
  .mini-map,
  .kpi-strip,
  .nav-list,
  .role-grid,
  .screen-map { grid-template-columns: 1fr; }
  .section-head { display: block; }
  h1 { font-size: 36px; }
}