/* ==========================================================================
   Components CSS - Header, Buttons, Cards, Forms
   ========================================================================== */

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: var(--space-md) 0;
  background: transparent;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
  background: var(--color-secondary);
  box-shadow: var(--shadow-lg);
}

.header.scrolled .nav__link {
  color: var(--color-text-inverse);
}

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

.header.scrolled .logo img {
  filter: none;
}

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

.logo {
  display: flex;
  align-items: center;
  z-index: var(--z-header);
}

.logo img {
  height: 50px;
  width: auto;
  transition: filter var(--transition-base);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-inverse);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

/* Mobile menu toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  z-index: var(--z-header);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-inverse);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.header.scrolled .nav__toggle span {
  background: var(--color-text);
}

.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

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

.btn--secondary:hover {
  background: var(--color-text-inverse);
  color: var(--color-secondary);
}

.btn--dark {
  background: var(--color-secondary);
  color: var(--color-text-inverse);
}

.btn--dark:hover {
  background: var(--color-secondary-light);
  transform: translateY(-2px);
}

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

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-secondary);
}

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

.btn--sm {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--fs-xs);
}

.btn--icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Cards
   ========================================================================== */

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

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}

.card--service {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
}

.card--service__icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-lg);
}

.card--service__title {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.card--service__text {
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
}

.card--pricing {
  padding: var(--space-2xl);
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 100%);
  border: 2px solid var(--color-primary);
}

.card--pricing__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.card--pricing__title {
  font-size: var(--fs-lg);
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.card--pricing__price {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--color-secondary);
}

.card--pricing__unit {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.card--pricing__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.card--pricing__item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.card--pricing__item:last-child {
  border-bottom: none;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form__label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--space-md);
  font-size: var(--fs-base);
  background: var(--color-white);
  border: 2px solid #e5e5e5;
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-text-light);
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form__message {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-weight: var(--fw-medium);
  text-align: center;
}

.form__message--success {
  background: #dcfce7;
  color: var(--color-success);
}

.form__message--error {
  background: #fee2e2;
  color: var(--color-error);
}

/* ==========================================================================
   Social Links
   ========================================================================== */

.social-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-sm);
  width: 100%;
  max-width: 320px;
}

.social-link {
  display: block;
  width: 100%;
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.social-link:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.social-link img {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Phone Link
   ========================================================================== */

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.phone-link:hover {
  color: var(--color-primary-dark);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-secondary);
  color: var(--color-text-inverse);
  padding: var(--space-2xl) 0;
}

.footer__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer__copyright {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
}

.footer__copyright a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.footer__copyright a:hover {
  color: var(--color-primary-dark);
}

.back-to-top {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-secondary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), background var(--transition-base);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}