/*
  Component Styles
  Navigation, Buttons, Cards, Forms, Footer
*/

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  gap: var(--space-lg);
}

.nav__brand {
  flex-shrink: 0;
}

.nav__logo {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  white-space: nowrap;
}

.nav__logo:hover {
  color: var(--color-primary-hover);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-fixed);
}

.nav__toggle-bar {
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.nav__menu {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav__item {
  white-space: nowrap;
}

.nav__link {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-base);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link--active {
  color: var(--color-primary);
  font-weight: var(--font-semibold);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

.nav__cta {
  flex-shrink: 0;
}

/* Mobile navigation */
@media (max-width: 1024px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3xl) var(--space-lg);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-slow);
    gap: var(--space-md);
  }

  .nav__menu.is-open {
    right: 0;
  }

  .nav__cta {
    display: none;
  }

  .nav__link--active::after {
    width: 30px;
  }
}

/* ============================================
   BUTTONS
   ============================================ */

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.button--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

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

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

.button--secondary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.button--secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-gray-300);
}

.button--outline:hover {
  border-color: var(--color-primary);
  background-color: var(--color-gray-50);
}

.button--large {
  padding: 1rem 2rem;
  font-size: var(--text-lg);
}

.button--full {
  width: 100%;
  display: block;
}

.button:focus {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-md);
  color: var(--color-primary);
}

.icon {
  width: 100%;
  height: 100%;
}

.card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

/* Feature cards */
.feature {
  padding: var(--space-md);
}

.feature__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.feature__text {
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
}

/* ============================================
   STATS
   ============================================ */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  text-align: center;
}

.stat {
  padding: var(--space-md);
}

.stat__value {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.stat__label {
  font-size: var(--text-base);
  color: var(--color-gray-600);
  font-weight: var(--font-medium);
}

/* ============================================
   FORMS
   ============================================ */

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

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--text-base);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font-sans);
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236B7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
  appearance: none;
}

/* Checkbox */
.form-group--checkbox {
  display: flex;
  align-items: flex-start;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-right: var(--space-xs);
  margin-top: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

.form-checkbox__label {
  font-size: var(--text-sm);
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
}

/* Form errors */
.form-error {
  display: block;
  color: var(--color-error);
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
}

.form-input.has-error,
.form-select.has-error,
.form-textarea.has-error {
  border-color: var(--color-error);
}

.form-input.has-error:focus,
.form-select.has-error:focus,
.form-textarea.has-error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Form note */
.form-note {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-top: var(--space-sm);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.alert--success {
  background-color: #d1fae5;
  border-left: 4px solid var(--color-success);
  color: #065f46;
}

.alert--error {
  background-color: #fee2e2;
  border-left: 4px solid var(--color-error);
  color: #991b1b;
}

.alert--info {
  background-color: #dbeafe;
  border-left: 4px solid var(--color-info);
  color: #1e40af;
}

.alert__title {
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-xs);
}

.alert__text {
  margin: 0;
}

/* ============================================
   CTA (Call to Action)
   ============================================ */

.cta {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta__title {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  font-size: var(--text-3xl);
}

.cta__text {
  font-size: var(--text-lg);
  color: var(--color-gray-100);
  margin-bottom: var(--space-lg);
}

/* Compliance statement */
.compliance {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.compliance__title {
  margin-bottom: var(--space-md);
  color: var(--color-primary-dark);
}

.compliance__text {
  font-size: var(--text-base);
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-sm);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-2xl) 0 var(--space-lg) 0;
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
  .footer__content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__content {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__section {
  margin-bottom: var(--space-md);
}

.footer__title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.footer__heading {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.footer__text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-xs);
  color: var(--color-gray-400);
}

.footer__link {
  color: var(--color-gray-400);
  transition: color var(--transition-base);
  font-size: var(--text-sm);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__links li {
  margin-bottom: var(--space-xs);
}

.footer__bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--space-md);
  text-align: center;
}

.footer__copyright {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-xs);
}

.footer__disclaimer {
  font-size: var(--text-xs);
  color: var(--color-gray-600);
}