body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  padding-block: var(--space-5xl);
}

.section__header {
  margin-bottom: var(--space-3xl);
}

.section__header--center {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-3xl);
}

.section__header--light .section__label,
.section__header--light .section__title,
.section__header--light .section__desc {
  color: var(--color-overlay-text);
}

.section__header--light .section__desc {
  opacity: 0.85;
}

.section__label {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(var(--fs-2xl), 4vw, var(--fs-4xl));
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.section__desc {
  margin-top: var(--space-lg);
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
  border-color: var(--color-accent);
  position: relative;
  overflow: hidden;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 0.9rem 2rem;
  font-size: var(--fs-base);
}

.btn--full {
  width: 100%;
}

/* Scroll Animations */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate="fade-left"] {
  transform: translateX(30px);
}

[data-animate="fade-up"].is-visible,
[data-animate="fade-left"].is-visible {
  opacity: 1;
  transform: translate(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Form Elements */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-theme);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
  opacity: 1;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group input.is-error,
.form-group textarea.is-error,
.form-group select.is-error {
  border-color: #c0392b;
}

.form-error {
  margin-top: 0.45rem;
  font-size: var(--fs-sm);
  color: #c0392b;
  line-height: 1.35;
}

.field-required {
  color: var(--color-secondary);
  font-weight: 700;
}