/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.nav--scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 1.5rem;
  font-weight: var(--weight-bold);
  color: var(--color-text);
  letter-spacing: -0.03em;
}

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

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav__links a {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  transition: color var(--transition-fast);
}

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

.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

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

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

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

/* Mobile menu overlay */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-8) var(--space-6);
  flex-direction: column;
  gap: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.nav__mobile.open {
  display: flex;
}

.nav__mobile a {
  color: var(--color-text);
  font-size: 1.125rem;
  font-weight: var(--weight-medium);
}

@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__hamburger { display: none; }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: var(--weight-semibold);
  font-size: var(--text-small);
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  min-height: 44px;
}

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

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

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

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

.btn--white {
  background: #ffffff;
  color: var(--color-text);
}

.btn--white:hover {
  background: #f0f0f0;
  color: var(--color-text);
  transform: translateY(-1px);
}

.btn--sm {
  font-size: var(--text-caption);
  padding: 8px 16px;
  min-height: 36px;
}

.btn--lg {
  font-size: var(--text-body);
  padding: 16px 32px;
}

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

.card {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  box-shadow: 0 14px 40px rgba(23, 33, 29, 0.06);
}

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

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card__title {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-2);
}

.card__desc {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: var(--leading-relaxed);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-4);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  color: var(--color-primary);
}

.card__link:hover {
  gap: var(--space-2);
}

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

.pricing-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card--featured {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

.pricing-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #ffffff;
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-card__name {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-2);
}

.pricing-card__price {
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.pricing-card__price span {
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
}

.pricing-card__features {
  margin: var(--space-8) 0;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

.pricing-card__features li::before {
  content: "";
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
  /* checkmark via mask */
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

/* ============================================
   CTA Banner
   ============================================ */

.cta-banner {
  background: linear-gradient(135deg, #2f5d50, #183229);
  padding: var(--space-20) 0;
  text-align: center;
}

.cta-banner h2 {
  color: #ffffff;
  margin-bottom: var(--space-6);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-8);
}

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

.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.footer__col h4 {
  color: #ffffff;
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.footer__col a {
  display: block;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-small);
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: #ffffff;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-caption);
}

@media (min-width: 640px) {
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__bottom { flex-direction: row; justify-content: space-between; }
}

@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 2fr repeat(3, 1fr); }
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

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

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-body);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

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

.form-group .error-msg {
  color: var(--color-danger);
  font-size: var(--text-caption);
}

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

/* ============================================
   Feature Row (alternating image + text)
   ============================================ */

.feature-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

.feature-row--reverse .feature-row__text {
  order: 1;
}

.feature-row--reverse .feature-row__image {
  order: 2;
}

.feature-row__text h3 {
  font-size: var(--text-h2);
  margin-bottom: var(--space-4);
}

.feature-row__text p {
  margin-bottom: var(--space-4);
}

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

.feature-row__text li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

.feature-row__text li::before {
  content: "";
  width: 8px;
  height: 8px;
  min-width: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  margin-top: 6px;
}

.feature-row__image img {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
  .feature-row {
    grid-template-columns: 1fr 1fr;
  }

  .feature-row--reverse .feature-row__text { order: 2; }
  .feature-row--reverse .feature-row__image { order: 1; }
}

/* ============================================
   FAQ Accordion
   ============================================ */

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--space-6) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  text-align: left;
}

.faq-item__question::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-item__question::after {
  content: "\2212";
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-item.open .faq-item__answer {
  max-height: 500px;
}

.faq-item__answer p {
  padding-bottom: var(--space-6);
  font-size: var(--text-small);
  line-height: var(--leading-relaxed);
}

/* ============================================
   Metrics Strip
   ============================================ */

.metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  text-align: center;
}

.metrics__item strong {
  display: block;
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.metrics__item span {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

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

@media (min-width: 768px) {
  .metrics { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================
   Steps (How it works)
   ============================================ */

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  counter-reset: step;
}

.step {
  text-align: center;
  counter-increment: step;
}

.step__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  color: var(--color-primary);
  font-weight: var(--weight-bold);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.step h3 {
  margin-bottom: var(--space-2);
}

.step p {
  font-size: var(--text-small);
  max-width: 320px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   Testimonials
   ============================================ */

.testimonial {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.testimonial__quote {
  font-size: var(--text-body);
  color: var(--color-text);
  font-style: italic;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  font-size: var(--text-small);
}

.testimonial__name {
  font-weight: var(--weight-semibold);
  font-size: var(--text-small);
  color: var(--color-text);
}

.testimonial__role {
  font-size: var(--text-caption);
  color: var(--color-text-tertiary);
}

/* ============================================
   Hero Screenshot
   ============================================ */

.hero-screenshot {
  max-width: 900px;
  margin: var(--space-12) auto 0;
}

.hero-screenshot img {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   App Gallery
   ============================================ */

.app-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.app-gallery__item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.app-gallery__item img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--color-bg-secondary);
}

.app-gallery__item figcaption {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .app-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .app-gallery__item--wide {
    grid-column: span 2;
  }
}

/* ============================================
   Integration Grid
   ============================================ */

.integration-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
}

.integration-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

.integration-card h4 {
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-1);
}

.integration-card p {
  font-size: var(--text-caption);
}