/* Buttons - Pill shaped */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-normal);
  text-align: center;
  gap: 0.5rem;
  letter-spacing: -0.01em;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #000000; /* Contrast against mint green */
  box-shadow: 0 4px 20px rgba(110, 231, 183, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(110, 231, 183, 0.4);
}

.btn-outline {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background-color: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.btn-icon svg {
  width: 1.1rem;
  height: 1.1rem;
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon svg {
  transform: translateX(4px);
}

/* Header & Navigation (Frosted Glass) */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 100;
  transition: background-color var(--transition-normal), padding var(--transition-normal), border-bottom var(--transition-normal);
  background-color: transparent;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background-color: rgba(11, 15, 25, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

.logo svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

.nav-link.active,
.nav-link:hover {
  color: var(--color-text);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
}

/* Cards (Glassmorphism & Bento) */
.card {
  background-color: var(--color-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  padding: 2.5rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.06), transparent 40%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card > * {
  position: relative;
  z-index: 2;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-small);
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.1);
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

/* Footer */
.site-footer {
  background-color: transparent;
  border-top: 1px solid var(--color-border);
  padding: 6rem 0 2rem;
  margin-top: auto;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand {
  grid-column: span 2;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.form-control {
  width: 100%;
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  padding: 1rem 1.25rem;
  color: var(--color-text);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 2px rgba(110, 231, 183, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 150px;
}