/* =========================================================
   VagaBici Lumiar — Product Documentation Shell Stylesheet
   Calm, precise, developer/docs adjacent layout. Image-free.
   ========================================================= */

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', SFMono-Regular, Consolas, Monaco, monospace;

  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-sidebar: #f1f5f9;
  --bg-subtle: #f8fafc;
  --bg-code: #f1f5f9;

  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-dark: #94a3b8;

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;

  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-light: #e0f2fe;
  --accent-border: #bae6fd;

  --sidebar-width: 270px;
  --topbar-height: 52px;
  --content-max: 920px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--topbar-height) + 1.5rem);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-surface);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Top Bar */
.docs-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--topbar-height);
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
}

.topbar-inner {
  max-width: 1360px;
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand-logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: var(--text-main);
  color: #fff;
  border-radius: 4px;
}

.brand-title {
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  color: var(--text-main);
  text-decoration: none;
}

.badge-docs {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.15rem 0.5rem;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-medium);
  color: var(--text-muted);
  border-radius: 3px;
  letter-spacing: 0.02em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.topbar-location {
  font-size: 0.82rem;
  color: var(--text-dim);
  display: none;
}

@media (min-width: 640px) {
  .topbar-location {
    display: inline-block;
  }
}

.topbar-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--accent-border);
  background-color: var(--accent-light);
  border-radius: 4px;
  transition: all 0.15s ease;
}

.topbar-phone:hover {
  background-color: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* Mobile TOC Dropdown */
.mobile-toc-wrapper {
  display: block;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-light);
}

@media (min-width: 900px) {
  .mobile-toc-wrapper {
    display: none;
  }
}

.mobile-toc-details summary {
  list-style: none;
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.mobile-toc-details summary::-webkit-details-marker {
  display: none;
}

.summary-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.summary-indicator::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
}

.mobile-toc-details[open] .summary-indicator::after {
  content: "−";
}

.mobile-toc-links {
  padding: 0.5rem 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-top: 1px solid var(--border-light);
}

.m-toc-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  border-radius: 3px;
}

.m-toc-link:hover,
.m-toc-link.active {
  background-color: #fff;
  color: var(--accent);
}

/* Layout Shell */
.docs-container {
  max-width: 1360px;
  margin: 0 auto;
  display: flex;
}

/* Left Sticky TOC Sidebar */
.docs-sidebar {
  display: none;
  width: var(--sidebar-width);
  flex-shrink: 0;
  border-right: 1px solid var(--border-light);
  background-color: var(--bg-sidebar);
}

@media (min-width: 900px) {
  .docs-sidebar {
    display: block;
  }
}

.sidebar-inner {
  position: sticky;
  top: var(--topbar-height);
  height: calc(100vh - var(--topbar-height));
  overflow-y: auto;
  padding: 1.75rem 1.25rem 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sidebar-section-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.85rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.toc-link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  border-left: 2px solid transparent;
  transition: all 0.12s ease;
}

.toc-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.toc-text {
  font-weight: 500;
}

.toc-link:hover {
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.6);
}

.toc-link.active {
  color: var(--accent);
  background-color: #fff;
  border-left-color: var(--accent);
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}

.toc-link.active .toc-num {
  color: var(--accent);
}

.toc-sublist {
  list-style: none;
  margin-left: 1.6rem;
  padding-left: 0.6rem;
  border-left: 1px solid var(--border-medium);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin-top: 0.2rem;
  margin-bottom: 0.4rem;
}

.toc-sublink {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: 0.2rem 0.4rem;
  display: block;
  border-radius: 3px;
}

.toc-sublink:hover {
  color: var(--text-main);
}

.sidebar-quickinfo {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-medium);
}

.info-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 0.65rem;
}

.info-key {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.info-val {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-main);
}

.info-val a {
  color: var(--accent);
  text-decoration: none;
}

.info-val a:hover {
  text-decoration: underline;
}

/* Right Content Area */
.docs-content {
  flex: 1;
  min-width: 0;
  max-width: var(--content-max);
  padding: 2.25rem 1.5rem 4rem;
  margin: 0 auto;
}

@media (min-width: 900px) {
  .docs-content {
    padding: 2.75rem 3rem 5rem;
    margin: 0;
  }
}

/* Breadcrumbs */
.docs-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
}

.breadcrumb-separator {
  color: var(--border-dark);
}

.breadcrumb-current {
  color: var(--text-muted);
}

/* Headings and Typography */
.section-header-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--accent);
  background-color: var(--accent-light);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  margin-bottom: 0.75rem;
}

.doc-h1 {
  font-size: 1.85rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .doc-h1 {
    font-size: 2.25rem;
  }
}

.lead-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.75rem;
}

.content-section {
  padding-top: 2.5rem;
  margin-bottom: 3.5rem;
  border-top: 1px solid var(--border-light);
}

.content-section:first-of-type {
  padding-top: 0;
  border-top: none;
}

.doc-h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.section-intro {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

/* Callout Boxes */
.callout-box {
  display: flex;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  border-radius: 5px;
  margin-bottom: 2rem;
  font-size: 0.9rem;
  line-height: 1.55;
}

.callout-info {
  background-color: #f0f9ff;
  border-left: 3px solid var(--accent);
  color: #0c4a6e;
}

.callout-icon {
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 0.1rem;
}

/* Technical Summary Grid */
.technical-summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (min-width: 600px) {
  .technical-summary-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.summary-stat {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.stat-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Services / Definition blocks */
.definition-block-group {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.definition-card {
  border: 1px solid var(--border-light);
  background-color: #fff;
  border-radius: 6px;
  padding: 1.25rem 1.4rem;
  transition: border-color 0.15s ease;
}

.definition-card:hover {
  border-color: var(--border-medium);
}

.def-term {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

@media (min-width: 600px) {
  .def-term {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
  }
}

.def-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background-color: var(--bg-code);
  border: 1px solid var(--border-medium);
  color: var(--text-main);
  border-radius: 3px;
  align-self: flex-start;
}

.def-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.def-body p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.def-specs-table {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
}

.spec-row {
  display: grid;
  grid-template-columns: 1fr;
  padding: 0.35rem 0;
  border-bottom: 1px dashed var(--border-light);
  font-size: 0.8rem;
}

@media (min-width: 640px) {
  .spec-row {
    grid-template-columns: 160px 1fr;
  }
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-field {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.spec-data {
  color: var(--text-main);
  font-weight: 500;
}

/* Process Steps */
.process-steps-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.step-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.15rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 6px;
}

.step-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  background-color: #fff;
  border: 1px solid var(--accent-border);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  height: fit-content;
  flex-shrink: 0;
}

.step-title {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.step-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Table */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  margin: 1.5rem 0;
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.docs-table th {
  background-color: var(--bg-sidebar);
  padding: 0.75rem 1rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border-medium);
  color: var(--text-main);
}

.docs-table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-muted);
  vertical-align: top;
}

.docs-table tr:last-child td {
  border-bottom: none;
}

.docs-table td strong {
  color: var(--text-main);
}

/* Pricing Panels */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1rem;
}

@media (min-width: 680px) {
  .pricing-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.pricing-panel {
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 1.5rem;
  background-color: #fff;
  display: flex;
  flex-direction: column;
}

.panel-featured {
  border-color: var(--accent);
  background-color: #fbfdff;
}

.panel-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.panel-price-desc {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.panel-detail {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.panel-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.panel-features li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 1.2rem;
  position: relative;
}

.panel-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

.panel-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border-light);
  color: var(--text-main);
}

/* FAQ */
.faq-item {
  margin-bottom: 1.4rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border-light);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.faq-answer {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Contact Section & Form */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 1.25rem;
}

@media (min-width: 820px) {
  .contact-layout {
    grid-template-columns: 1.25fr 0.9fr;
  }
}

.form-container {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 1.5rem;
}

.docs-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 550px) {
  .form-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
}

.required {
  color: #dc2626;
}

.form-input,
.form-select,
.form-textarea {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-medium);
  border-radius: 4px;
  background-color: #fff;
  color: var(--text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  background-color: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s ease;
  margin-top: 0.5rem;
}

.btn-submit:hover {
  background-color: var(--accent-hover);
}

.form-feedback {
  padding: 0.75rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.form-feedback.success {
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.form-feedback.hidden {
  display: none;
}

/* Contact details side card */
.contact-details-box {
  background-color: #fff;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 1.5rem;
}

.details-card-header {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.details-intro {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.contact-unit {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.contact-unit:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.unit-title {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.unit-val {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  line-height: 1.45;
}

.contact-link-active {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

.contact-link-active:hover {
  text-decoration: underline;
}

.unit-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.social-links-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.social-link-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-decoration: none;
  color: var(--text-muted);
  padding: 0.25rem 0.55rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-medium);
  border-radius: 4px;
  transition: all 0.12s ease;
}

.social-link-badge:hover {
  color: var(--accent);
  border-color: var(--accent);
  background-color: var(--accent-light);
}

/* Privacy Prose */
.privacy-prose {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  line-height: 1.6;
}

.privacy-prose strong {
  color: var(--text-main);
}

/* Footer */
.docs-footer {
  margin-top: 4rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-light);
}

.footer-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .footer-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer-meta-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer-meta-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-meta-links a:hover {
  color: var(--accent);
}

.footer-addr {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}