/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--fs-base);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -1;
  transition: opacity var(--transition-base);
  opacity: 0;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  border: none;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover, .btn-primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: var(--color-white);
}

.btn-primary::before {
  background: linear-gradient(135deg, #E63946 0%, #B21B27 100%);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover, .btn-secondary:focus-visible {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background: var(--gradient-primary);
  color: var(--color-white);
  border: none;
}

.btn-accent:hover, .btn-accent:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: var(--color-white);
}

/* Cards */
.card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: var(--shadow-xl);
  border-color: rgba(178, 27, 39, 0.1);
}

/* Logo Cards (Partners & References) */
.logo-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 200px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.logo-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.logo-card__img-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.logo-card__img-wrapper img {
  max-height: 90px;
  max-width: 80%;
  object-fit: contain;
  filter: grayscale(100%) opacity(0.7);
  transition: all var(--transition-base);
}

.logo-card:hover .logo-card__img-wrapper img {
  filter: grayscale(0%) opacity(1);
  transform: scale(1.05);
}

.logo-card__title {
  margin-top: var(--spacing-4);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
  position: absolute;
  bottom: var(--spacing-4);
}

.logo-card:hover .logo-card__title {
  opacity: 1;
  transform: translateY(0);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__content {
  padding: var(--spacing-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__title {
  margin-bottom: var(--spacing-2);
}

.card__desc {
  color: var(--color-text-muted);
  flex: 1;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-2);
  color: var(--color-dark);
}

.form-control {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* Header & Topbar */
.topbar {
  background-color: var(--color-dark);
  color: var(--color-white);
  font-size: var(--fs-sm);
  padding-block: var(--spacing-2);
}

.topbar a {
  color: var(--color-white);
}

.topbar a:hover {
  color: var(--color-accent);
}

.site-header {
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: transform var(--transition-base), padding var(--transition-base);
}

/* Navigation */
.nav-list {
  display: flex;
  gap: var(--spacing-6);
  align-items: center;
}

.nav-link {
  color: var(--color-dark);
  font-weight: 600;
  font-family: var(--font-heading);
  padding-block: var(--spacing-4);
  display: block;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link:focus-visible {
  color: var(--color-secondary);
}