/* ==========================================================================
   components.css — Reusable UI component styles
   Buttons, cards, form elements, navbar, footer, and shared patterns
   used across all pages of the MN Solar website.
   ========================================================================== */

/* ==========================================================================
   NAVBAR
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: var(--space-8);
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar__logo-img {
  height: 52px;
  width: auto;
  display: block;
}

.navbar__logo-text {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  line-height: 1;
}

.navbar__logo-text span {
  color: var(--color-primary);
}

/* Navigation links */
.navbar__nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.navbar__nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

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

/* Actions */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Hamburger */
.navbar__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  padding: var(--space-1);
}

.navbar__hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-secondary);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
}

.navbar__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.navbar__hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.navbar__mobile-menu {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-border);
}

.navbar__mobile-menu.open {
  display: flex;
}

.navbar__mobile-link {
  padding: var(--space-3) var(--container-padding);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
  border-radius: var(--radius-md);
}

.navbar__mobile-link:hover {
  color: var(--color-primary);
  background-color: rgba(61, 190, 90, 0.06);
}

/* Hide WhatsApp CTA button on mobile — only show on desktop */
.navbar__actions .btn-whatsapp {
  display: none;
}

@media (min-width: 900px) {
  .navbar__nav {
    display: flex;
  }

  .navbar__hamburger {
    display: none;
  }

  .navbar__mobile-menu {
    display: none !important;
  }

  .navbar__actions .btn-whatsapp {
    display: inline-flex;
  }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(61, 190, 90, 0.35);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(240, 112, 32, 0.35);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-outline-white {
  background-color: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
}

.btn-whatsapp {
  background-color: #25d366;
  color: #ffffff;
  border-color: #25d366;
}

.btn-whatsapp:hover {
  background-color: #1ebe5a;
  border-color: #1ebe5a;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.35);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-base);
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: var(--font-size-xs);
}

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

.service-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.service-card__image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.service-card__image-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(
    135deg,
    var(--color-primary-light) 0%,
    var(--color-primary) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-card__body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-card__icon {
  width: 48px;
  height: 48px;
  background-color: rgba(61, 190, 90, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  flex-shrink: 0;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  margin-bottom: var(--space-2);
}

.service-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  flex: 1;
  margin-bottom: var(--space-4);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  transition: gap var(--transition-fast);
  margin-top: auto;
}

.service-card__link:hover {
  gap: var(--space-3);
}

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

.stats-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .stats-bar {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.stat-item__value {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-item__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-normal);
}

/* ==========================================================================
   CONTACT FORM
   ========================================================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.form-label .required {
  color: var(--color-accent);
  margin-left: 2px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-base);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(61, 190, 90, 0.15);
}

.form-input.error,
.form-textarea.error {
  border-color: #e53e3e;
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

.form-error-message {
  font-size: var(--font-size-xs);
  color: #e53e3e;
  display: none;
}

.form-error-message.visible {
  display: block;
}

.form-success {
  padding: var(--space-4);
  background-color: rgba(61, 190, 90, 0.1);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  color: var(--color-primary-dark);
  font-weight: var(--font-weight-medium);
  display: none;
}

.form-success.visible {
  display: block;
}

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

.footer {
  background-color: var(--color-secondary);
  color: rgba(255, 255, 255, 0.75);
  padding-block: var(--space-12);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

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

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

.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  text-decoration: none;
}

.footer__brand-img {
  height: 52px;
  width: auto;
  display: block;
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: #ffffff;
}

.footer__brand-name span {
  color: var(--color-primary);
}

.footer__description {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-5);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  width: 38px;
  height: 38px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.75);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.footer__heading {
  font-family: var(--font-display);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
  text-decoration: none;
}

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

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-3);
}

.footer__contact-icon {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer__bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   CTA BANNER
   ========================================================================== */

.cta-banner {
  background: linear-gradient(135deg, var(--color-secondary) 0%, #2d2d2d 100%);
  padding-block: var(--space-16);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.cta-banner__inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-banner__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: var(--font-weight-bold);
  color: #ffffff;
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

.cta-banner__title span {
  color: var(--color-primary);
}

.cta-banner__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-8);
  max-width: 52ch;
  margin-inline: auto;
  line-height: var(--line-height-relaxed);
}

.cta-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  align-items: center;
}

/* ==========================================================================
   WHATSAPP FLOATING BUTTON
   ========================================================================== */

.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-overlay);
  width: 56px;
  height: 56px;
  background-color: #25d366;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.45);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
  text-decoration: none;
  color: #ffffff;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.55);
}

/* Pulsing ring animation */
.whatsapp-float::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-full);
  border: 3px solid #25d366;
  animation: waPulse 2s ease-out infinite;
}

@keyframes waPulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}