/* ============================================
   NISTERN — Components
   Navbar, Footer, Buttons, Cards, Forms, Tags
   ============================================ */

/* --- NAVBAR --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--color-black);
  z-index: var(--z-navbar);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-black);
  color: var(--color-green);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
  z-index: var(--z-modal);
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.navbar__link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  letter-spacing: var(--tracking-normal);
  transition: color var(--transition-fast);
}

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

.navbar__cta {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-black);
  background: var(--color-green);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.navbar__cta:hover {
  opacity: 0.88;
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: var(--z-modal);
  cursor: pointer;
  background: none;
  border: none;
}

.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  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 Drawer */
.navbar__drawer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-black);
  z-index: var(--z-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.navbar__drawer.open {
  opacity: 1;
  pointer-events: all;
}

.navbar__drawer-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}

.navbar__drawer-link {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--weight-black);
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: var(--tracking-tight);
  transition: color var(--transition-fast);
}

.navbar__drawer-link:hover {
  color: var(--color-green);
}

.navbar__drawer-cta {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-black);
  background: var(--color-green);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
  margin-top: var(--space-3);
}

@media (max-width: 767px) {
  .navbar__nav,
  .navbar__cta {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }

  .navbar {
    padding: 0 20px;
    height: var(--navbar-height-mobile, 60px);
  }

  .navbar__logo {
    font-size: 14px;
  }

  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .btn--lg {
    padding: 14px 24px;
    font-size: 11px;
  }

  .btn {
    font-size: 11px;
  }
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.btn:hover {
  opacity: 0.88;
}

.btn:active {
  transform: scale(0.98);
}

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

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

.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 10px;
}

.btn--lg {
  padding: 18px 40px;
  font-size: var(--text-sm);
}

/* --- SERVICE CARDS --- */
.service-card {
  background: var(--color-white);
  border: 0.5px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.service-card--dark {
  background: var(--color-charcoal);
  border-color: var(--color-border);
}

.service-card__num {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-green);
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-3);
}

.service-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-black);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-2);
}

.service-card--dark .service-card__name {
  color: var(--color-white);
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-stone);
  line-height: var(--leading-loose);
  flex: 1;
}

.service-card__arrow {
  font-size: var(--text-lg);
  color: var(--color-green);
  margin-top: var(--space-4);
}

/* --- STAT BLOCKS --- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 0.5px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat-block {
  background: var(--color-charcoal);
  padding: var(--space-6) var(--space-5);
  border-right: 0.5px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.stat-block:last-child {
  border-right: none;
}

.stat-block__num {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: var(--weight-black);
  color: var(--color-green);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-block__label {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.45);
  line-height: var(--leading-normal);
}

@media (max-width: 1023px) {
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-block {
    border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
  }

  .stat-block:nth-child(2) {
    border-right: none;
  }

  .stat-block:nth-child(3),
  .stat-block:nth-child(4) {
    border-bottom: none;
  }
}

@media (max-width: 767px) {
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-block {
    border-right: none;
    border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
  }

  .stat-block:last-child {
    border-bottom: none;
  }

  .stat-block__num {
    font-size: var(--text-4xl);
  }
}

@media (max-width: 480px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

/* --- TESTIMONIAL --- */
.testimonial {
  background: var(--color-charcoal);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
}

.testimonial__quote-mark {
  font-family: var(--font-display);
  font-size: 80px;
  color: var(--color-green);
  line-height: 0.8;
  margin-bottom: var(--space-3);
  display: block;
}

.testimonial__text {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: var(--weight-regular);
  color: var(--color-white);
  line-height: var(--leading-loose);
  font-style: italic;
  margin-bottom: var(--space-5);
  max-width: var(--container-text);
}

.testimonial__author {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-green);
}

.testimonial__company {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  margin-top: 4px;
}

/* --- FORM --- */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-stone);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 16px;
  border: 0.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-black);
  background: var(--color-white);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-green);
  border-width: 1.5px;
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: var(--leading-loose);
}

/* --- TAGS --- */
.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.tag--green {
  background: rgba(198, 241, 53, 0.12);
  color: #7aad00;
  border: 0.5px solid rgba(198, 241, 53, 0.3);
}

.tag--outline {
  background: transparent;
  color: var(--color-stone);
  border: 0.5px solid var(--color-border-light);
}

.tag--dark {
  background: var(--color-charcoal);
  color: rgba(255, 255, 255, 0.6);
  border: 0.5px solid var(--color-border);
}

/* --- FOOTER --- */
.footer {
  background: var(--color-black);
  padding-top: var(--space-9);
  padding-bottom: var(--space-5);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-6);
}

.footer__logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-black);
  color: var(--color-green);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
  display: block;
  margin-bottom: var(--space-3);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.4);
  line-height: var(--leading-loose);
}

.footer__col-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-stone);
  margin-bottom: var(--space-3);
}

.footer__link {
  display: block;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  margin-bottom: var(--space-2);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 0.5px solid rgba(255, 255, 255, 0.08);
}

.footer__copy {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.3);
}

.footer__legal {
  display: flex;
  gap: var(--space-4);
}

.footer__legal-link {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.3);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

@media (max-width: 767px) {
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
  }

  .footer__brand {
    grid-column: span 2;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}