:root {
  --color-bg: #000;
  --color-surface: #111;
  --color-border: rgba(255, 255, 255, 0.25);
  --color-text: #f0f0f0;
  --color-muted: #f0f0f0;
  --max-width: 720px;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Logo — carré blanc, 2 lignes */

.logo-box {
  border: 2px solid #fff;
  padding: 1rem 1.75rem;
  line-height: 1.15;
  color: #fff;
  transition: opacity 0.15s;
}

.logo-box:hover {
  opacity: 0.85;
  color: #fff;
}

.logo-line {
  display: block;
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-align: center;
}

.tagline {
  font-size: clamp(0.85rem, 2.5vw, 0.95rem);
  color: var(--color-muted);
}

.intro {
  max-width: var(--max-width);
}

.intro .lead {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--color-muted);
}

/* Features — hanging icons */

.feature-hanging {
  position: relative;
  padding-top: 2rem;
}

.feature-icon {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
  border: 2px solid #fff;
  border-radius: 50%;
  font-size: 1.35rem;
  color: #fff;
  z-index: 1;
}

.feature-body {
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  padding: 2.5rem 1.5rem 1.5rem;
  background-color: var(--color-surface);
  text-align: center;
  height: 100%;
}

.feature-body h2 {
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
}

.feature-body p {
  font-size: clamp(0.85rem, 2vw, 0.925rem);
  color: var(--color-muted);
  margin-bottom: 0;
  line-height: 1.5;
}

/* Honeypot — invisible aux visiteurs */

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

/* Contact form — dark theme */

.contact {
  max-width: var(--max-width);
}

.contact h2 {
  font-size: clamp(1.1rem, 3vw, 1.25rem);
  font-weight: 600;
  color: #fff;
}

.contact-phone {
  padding: 1.25rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  background-color: var(--color-surface);
}

.contact-phone-number {
  display: inline-block;
  font-size: clamp(1.75rem, 6vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  text-decoration: none;
  line-height: 1.2;
}

.contact-phone-number:hover {
  color: #fff;
  opacity: 0.85;
}

.contact-phone-spell {
  margin: 0.5rem 0 0;
  font-size: clamp(0.85rem, 2.5vw, 0.95rem);
  color: var(--color-muted);
}

.form-label {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.form-control,
.form-select {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

.form-control::placeholder {
  color: #666;
}

.form-control:focus,
.form-select:focus {
  background-color: var(--color-surface);
  border-color: #fff;
  color: var(--color-text);
  box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.1);
}

.form-select {
  --bs-form-select-bg-img: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23999' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
}

.form-select option {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.was-validated .form-control:valid,
.was-validated .form-select:valid {
  border-color: #198754;
}

.was-validated .form-control:invalid,
.was-validated .form-select:invalid {
  border-color: #dc3545;
}

.btn-light:hover,
.btn-light:focus {
  background-color: #ddd;
  border-color: #ddd;
}

/* Footer */

footer {
  border-top: 1px solid var(--color-border);
}

footer a {
  color: #fff;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Responsive spacing */

@media (max-width: 575.98px) {
  .feature-body {
    padding: 2.25rem 1.25rem 1.25rem;
  }

  .logo-box {
    padding: 0.75rem 1.25rem;
  }
}