/* =============================================================
   SureTest Group — Components
   Reusable UI components: nav, buttons, cards, form, badges.
   ============================================================= */

/* --- Navigation --------------------------------------------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: var(--color-navy);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: box-shadow var(--transition-base),
              background-color var(--transition-base);
}

.nav.is-scrolled {
  background-color: var(--color-navy);
  box-shadow: 0 2px 20px rgba(0,0,0,0.25);
}

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

.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav__logo img,
.nav__logo-img {
  height: 38px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255,255,255,0.80);
  letter-spacing: var(--tracking-wide);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-brand-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
  border-radius: var(--radius-full);
}

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

.nav__link:hover::after {
  transform: scaleX(1);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-inverse);
}

.nav__phone-link {
  color: var(--color-text-inverse);
  transition: color var(--transition-fast);
}

.nav__phone-link:hover {
  color: var(--color-brand-orange);
}

.nav__phone-sep {
  opacity: 0.4;
}

.nav__phone-icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.nav__social-link {
  display: flex;
  align-items: center;
  color: var(--color-text-inverse);
  transition: color var(--transition-fast);
}

.nav__social-link:hover {
  color: var(--color-brand-orange);
}

.nav__social-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.nav__nata-link {
  display: flex;
  align-items: center;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.nav__nata-link:hover {
  opacity: 1;
}

.nav__nata-logo {
  height: 28px;
  width: auto;
}

/* Mobile menu toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.nav__toggle:hover {
  background: rgba(255,255,255,0.08);
}

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

.nav__toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu drawer */
.nav__mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-navy);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: var(--space-4) 0 var(--space-6);
  z-index: 99;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav__mobile-link {
  display: block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-md);
  font-weight: var(--weight-medium);
  color: rgba(255,255,255,0.85);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav__mobile-link:hover {
  color: var(--color-text-inverse);
  background: rgba(255,255,255,0.04);
}

.nav__mobile-cta {
  margin: var(--space-4) var(--space-6) 0;
}

@media (max-width: 768px) {
  .nav__links,
  .nav__phone {
    display: none;
  }
  .nav__toggle {
    display: flex;
  }
  .nav__mobile-menu {
    display: block;
  }
}

/* --- Buttons ------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: background var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--color-brand-orange);
  color: var(--color-text-inverse);
  border-color: var(--color-brand-orange);
}

.btn--primary:hover {
  background: var(--color-brand-orange-dark);
  border-color: var(--color-brand-orange-dark);
  box-shadow: 0 4px 14px rgba(255,69,0,0.35);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255,255,255,0.35);
}

.btn--secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.60);
}

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

.btn--outline:hover {
  background: var(--color-brand-orange);
  color: var(--color-text-inverse);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-md);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--full {
  width: 100%;
}

/* --- Badges / Pills ----------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.badge--orange {
  background: var(--color-brand-orange-light);
  color: var(--color-brand-orange);
  border: 1px solid rgba(255,69,0,0.25);
}

.badge--inverse {
  background: rgba(255,255,255,0.10);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-border-dark);
}

/* --- NATA Accreditation Block ------------------------------- */

.nata-block {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
}

.nata-block__logo {
  height: 44px;
  width: auto;
  flex-shrink: 0;
}

.nata-block__text {
  line-height: var(--leading-snug);
}

.nata-block__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-inverse-muted);
}

.nata-block__value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-text-inverse);
  letter-spacing: var(--tracking-tight);
}

/* --- Service Cards ------------------------------------------ */

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-brand-orange);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-brand-orange-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  transition: background var(--transition-base);
}

.card:hover .card__icon {
  background: var(--color-brand-orange);
}

.card__icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-brand-orange);
  transition: stroke var(--transition-base);
}

.card:hover .card__icon svg {
  stroke: var(--color-text-inverse);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: var(--tracking-tight);
}

.card__body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
}

/* --- Project Photo Cards ------------------------------------ */

.project-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  background: var(--color-steel);
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card__img {
  transform: scale(1.04);
}

.project-card__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-steel) 0%, var(--color-navy) 100%);
  color: var(--color-text-inverse-muted);
  font-size: var(--text-sm);
  gap: var(--space-2);
}

.project-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-5) var(--space-5) var(--space-5);
  background: linear-gradient(to top, rgba(26,43,60,0.96) 0%, rgba(26,43,60,0.65) 60%, transparent 100%);
}

.project-card__tag {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-inverse);
}

.project-card__label {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-1);
}

.project-card__desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.68);
  line-height: var(--leading-snug);
}

/* --- Stat / Trust Items ------------------------------------- */

.stat-item {
  text-align: center;
  padding: var(--space-4);
}

.stat-item__value {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--weight-black);
  color: var(--color-brand-orange);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
}

.stat-item__label {
  font-size: var(--text-sm);
  color: var(--color-text-inverse-muted);
  margin-top: var(--space-1);
  letter-spacing: var(--tracking-wide);
}

/* --- Contact Form ------------------------------------------- */

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

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-wide);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  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-brand-orange);
  box-shadow: 0 0 0 3px rgba(255,69,0,0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-input.is-error,
.form-textarea.is-error {
  border-color: #E53E3E;
}

.form-error-msg {
  font-size: var(--text-xs);
  color: #E53E3E;
  display: none;
}

.form-error-msg.is-visible {
  display: block;
}

.form-success {
  display: none;
  padding: var(--space-5) var(--space-6);
  background: rgba(34, 197, 94, 0.10);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: var(--radius-lg);
  color: #166534;
  font-weight: var(--weight-medium);
  text-align: center;
}

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

/* --- Footer ------------------------------------------------- */

.footer {
  background: var(--color-navy);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-block: var(--space-12) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: var(--space-8);
}

.footer__logo {
  height: 64px;
  width: auto;
  margin-bottom: var(--space-4);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-inverse-muted);
  line-height: var(--leading-loose);
  max-width: 300px;
}

.footer__heading {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-inverse-muted);
  margin-bottom: var(--space-4);
}

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

.footer__list-item {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  line-height: var(--leading-normal);
  transition: color var(--transition-fast);
}

a.footer__list-item:hover {
  color: var(--color-text-inverse);
}

.footer__heading-link {
  color: inherit;
  text-decoration: none;
}

.footer__heading-link:hover {
  color: var(--color-text-inverse);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  transition: color var(--transition-fast);
}

a.footer__contact-item:hover {
  color: var(--color-brand-orange);
}

.footer__contact-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
  stroke: currentColor;
}

.footer__acknowledgement {
  position: relative;
  padding-top: var(--space-6);
  margin-bottom: var(--space-6);
}

.footer__acknowledgement-text {
  font-size: var(--text-sm);
  color: rgba(220, 180, 130, 0.55);
  line-height: var(--leading-loose);
  font-style: italic;
  max-width: 720px;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer__copy {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
}

.footer__accreditation {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}