/* Caelian AI Consultancy - basisstylesheet
   Conform caelian-house-style skill, references/website_spec.md */

:root {
  --caelian-nacht:        #0D0F1A;
  --caelian-teal:         #1D9E75;
  --caelian-teal-light:   #E1F5EE;
  --caelian-purple:       #7F77DD;
  --caelian-purple-deep:  #3C3489;
  --caelian-purple-light: #EEEDFE;
  --caelian-amber:        #BA7517;
  --caelian-amber-light:  #FAEEDA;
  --caelian-red:          #C0392B;
  --caelian-red-light:    #FDECEA;
  --caelian-border:       #D3D1C7;
  --caelian-text-dark:    #1A1A1A;
  --caelian-text-mid:     #444441;
  --caelian-text-light:   #888780;

  --font-display: 'Cinzel', Helvetica, Arial, serif;
  --font-body: 'Raleway', Helvetica, Arial, sans-serif;
}

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--caelian-text-dark);
  background-color: #FFFFFF;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--caelian-teal);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 0;
}

h1 {
  font-size: 2.6rem;
  color: var(--caelian-purple-deep);
}

h2 {
  font-size: 1.9rem;
  color: var(--caelian-purple-deep);
}

h3 {
  font-size: 1.3rem;
  color: var(--caelian-purple);
}

p {
  margin-top: 0;
  color: var(--caelian-text-mid);
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Navigatie
   ========================================================================== */

.site-header {
  background-color: var(--caelian-nacht);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1120px;
  margin: 0 auto;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar__logo img {
  height: 40px;
  width: auto;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #FFFFFF;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__menu a {
  color: #FFFFFF;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.navbar__menu a:hover {
  text-decoration: none;
  color: var(--caelian-teal);
}

.navbar__menu a.is-active {
  color: var(--caelian-teal);
  border-bottom-color: var(--caelian-teal);
}

@media (max-width: 860px) {
  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: var(--caelian-nacht);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .navbar__menu.is-open {
    display: flex;
  }

  .navbar__menu li {
    width: 100%;
  }

  .navbar__menu a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .navbar__menu a.is-active {
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  background-color: var(--caelian-nacht);
  color: #FFFFFF;
  padding: 80px 0 72px;
}

.hero h1 {
  color: #FFFFFF;
  max-width: 820px;
}

.hero__subtext {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.1rem;
  max-width: 640px;
  margin-bottom: 32px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Secties
   ========================================================================== */

.section {
  padding: 64px 0;
}

.section--light {
  background-color: var(--caelian-purple-light);
}

.section--teal-light {
  background-color: var(--caelian-teal-light);
}

.section--dark {
  background-color: var(--caelian-nacht);
  color: #FFFFFF;
}

.section--dark h2,
.section--dark h3 {
  color: #FFFFFF;
}

.section--dark p {
  color: rgba(255, 255, 255, 0.8);
}

.section__intro {
  max-width: 720px;
  margin-bottom: 40px;
}

/* ==========================================================================
   Kaarten
   ========================================================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card-grid--2col {
  grid-template-columns: repeat(2, 1fr);
}

.card-grid--1col {
  grid-template-columns: 1fr;
  max-width: 420px;
}

@media (max-width: 860px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background-color: #FFFFFF;
  border: 1px solid var(--caelian-border);
  border-top: 3px solid var(--caelian-teal);
  border-radius: 4px;
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  flex-grow: 1;
}

.card .btn {
  margin-top: 20px;
  align-self: flex-start;
}

/* ==========================================================================
   Knoppen
   ========================================================================== */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  padding: 13px 28px;
  border-radius: 3px;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background-color: var(--caelian-teal);
  color: #FFFFFF;
}

.btn--primary:hover {
  background-color: #17825F;
}

.btn--outline {
  background-color: transparent;
  color: #FFFFFF;
  border-color: var(--caelian-teal);
}

.btn--outline:hover {
  background-color: rgba(29, 158, 117, 0.12);
}

.btn--outline-dark {
  background-color: transparent;
  color: var(--caelian-teal);
  border-color: var(--caelian-teal);
}

.btn--outline-dark:hover {
  background-color: var(--caelian-teal-light);
}

/* ==========================================================================
   Callouts
   ========================================================================== */

.callout {
  border: 1px solid;
  border-left-width: 4px;
  border-radius: 3px;
  padding: 20px 24px;
  margin: 24px 0;
}

.callout p {
  margin: 0;
  color: var(--caelian-text-dark);
}

.callout--purple {
  border-color: var(--caelian-purple);
  background-color: var(--caelian-purple-light);
}

.callout--teal {
  border-color: var(--caelian-teal);
  background-color: var(--caelian-teal-light);
}

.callout--amber {
  border-color: var(--caelian-amber);
  background-color: var(--caelian-amber-light);
}

/* ==========================================================================
   Tabellen
   ========================================================================== */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

th, td {
  text-align: left;
  padding: 12px 16px;
  border: 1px solid var(--caelian-border);
}

th {
  background-color: var(--caelian-purple-deep);
  color: #FFFFFF;
  font-family: var(--font-body);
  font-weight: 600;
}

tr:nth-child(even) td {
  background-color: #F1EFE8;
}

code, .hash {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  word-break: break-all;
}

pre {
  background-color: var(--caelian-nacht);
  color: #FFFFFF;
  padding: 20px 24px;
  border-radius: 3px;
  overflow-x: auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ==========================================================================
   Formulieren
   ========================================================================== */

.form {
  max-width: 640px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--caelian-text-mid);
  margin-bottom: 6px;
}

.form-group .form-hint {
  font-size: 0.85rem;
  color: var(--caelian-text-light);
  margin-top: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--caelian-text-dark);
  border: 1px solid var(--caelian-border);
  border-radius: 3px;
  padding: 11px 14px;
  background-color: #FFFFFF;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--caelian-teal);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.form-checkbox input[type="checkbox"] {
  margin-top: 4px;
}

.form-checkbox label {
  margin-bottom: 0;
  font-weight: 400;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-confirmation {
  padding: 24px;
}

.form-error {
  border: 1px solid var(--caelian-red);
  background-color: var(--caelian-red-light);
  border-radius: 3px;
  padding: 16px 20px;
  margin-bottom: 20px;
}

.form-error p {
  margin: 0;
  color: var(--caelian-text-dark);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: var(--caelian-nacht);
  color: rgba(255, 255, 255, 0.75);
  padding: 48px 0 28px;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.75);
}

.footer-col a:hover {
  color: var(--caelian-teal);
}

.footer-tagline {
  color: var(--caelian-teal);
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  margin-bottom: 8px;
}

.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
}

/* ==========================================================================
   Utility
   ========================================================================== */

.legal-content {
  max-width: 820px;
}

.legal-content h2 {
  margin-top: 40px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-meta td:first-child {
  width: 220px;
  font-weight: 500;
}

.legal-footer-note {
  color: var(--caelian-text-light);
  font-size: 0.9rem;
  margin-top: 40px;
}

.text-center {
  text-align: center;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }