/* ===================== */
/*  HEADER / NAVIGATION  */
/* ===================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo__icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: white;
  font-weight: var(--fw-bold);
}

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

.nav__links {
  display: none;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  padding: 0.5rem 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-accent);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-text-primary);
}

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

/* Language toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.lang-toggle__btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  padding: 0.35rem 0.6rem;
  border-radius: 3px;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  text-transform: uppercase;
}

.lang-toggle__btn--active {
  background: var(--color-accent);
  color: white;
}

.lang-toggle__btn:hover:not(.lang-toggle__btn--active) {
  color: var(--color-text-primary);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

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

.hamburger__line {
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger--active .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger--active .hamburger__line:nth-child(2) {
  opacity: 0;
}
.hamburger--active .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 15, 0.98);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all var(--transition-base);
}

.nav-overlay--active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-overlay__links {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.nav-overlay__link {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
  opacity: 0;
  transform: translateY(20px);
}

.nav-overlay--active .nav-overlay__link {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay--active .nav-overlay__link:nth-child(1) { transition-delay: 50ms; }
.nav-overlay--active .nav-overlay__link:nth-child(2) { transition-delay: 100ms; }
.nav-overlay--active .nav-overlay__link:nth-child(3) { transition-delay: 150ms; }
.nav-overlay--active .nav-overlay__link:nth-child(4) { transition-delay: 200ms; }
.nav-overlay--active .nav-overlay__link:nth-child(5) { transition-delay: 250ms; }

.nav-overlay__link:hover {
  color: var(--color-accent);
  transform: scale(1.05);
}

/* ========== */
/*  BUTTONS   */
/* ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

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

.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px var(--color-accent-glow);
}

.btn--ghost {
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}

.btn--ghost::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
  z-index: -1;
}

.btn--ghost:hover {
  color: white;
  transform: translateY(-2px);
}

.btn--ghost:hover::before {
  transform: scaleX(1);
}

.btn--outline {
  border: 1px solid var(--color-border-hover);
  color: var(--color-text-secondary);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn__arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ======== */
/*  CARDS   */
/* ======== */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-border-hover);
}

.card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(244, 117, 33, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
}

.card__icon svg {
  width: 28px;
  height: 28px;
}

.card__title {
  font-size: var(--fs-h4);
  margin-bottom: var(--space-xs);
}

.card__text {
  font-size: var(--fs-body);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.card:hover .card__icon {
  background: rgba(244, 117, 33, 0.2);
}

/* Service image card */
.card-service {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  cursor: pointer;
}

.card-service__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform var(--transition-slow);
}

.card-service::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10,10,15,0.95) 0%,
    rgba(10,10,15,0.4) 50%,
    rgba(10,10,15,0.2) 100%
  );
  z-index: 1;
}

.card-service__content {
  position: relative;
  z-index: 2;
  padding: var(--space-lg);
  width: 100%;
}

.card-service__title {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-xs);
}

.card-service__text {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  margin-bottom: var(--space-sm);
}

.card-service__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  transition: gap var(--transition-fast);
}

.card-service:hover .card-service__bg {
  transform: scale(1.08);
}

.card-service:hover .card-service__link {
  gap: 1rem;
}

/* ========= */
/*  FOOTER   */
/* ========= */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-lg);
}

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

@media (min-width: 576px) {
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}

.footer__title {
  font-size: var(--fs-h4);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.footer__text {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  line-height: 1.8;
}

.footer__link {
  display: block;
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  padding: 0.3rem 0;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
  padding-left: 0.5rem;
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
}

.footer__contact-icon {
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

/* ========= */
/*  FORMS    */
/* ========= */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--fs-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

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

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-error {
  font-size: var(--fs-small);
  color: var(--color-error);
  margin-top: 0.25rem;
  display: none;
}

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

.form-group--error .form-error {
  display: block;
}

.form-success {
  background: rgba(46, 204, 113, 0.1);
  border: 1px solid var(--color-success);
  color: var(--color-success);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin-top: var(--space-md);
  display: none;
}

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

/* ============ */
/*  MISC        */
/* ============ */
.divider {
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: var(--space-sm) auto;
}

.accent-text {
  color: var(--color-accent);
}

.mono-text {
  font-family: var(--font-mono);
}