/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + var(--space-12)) 0 var(--space-16);
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

/* Subtle background glow */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero__label {
  margin-bottom: var(--space-6);
}

.hero__content h1 {
  margin-bottom: var(--space-8);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 520px;
  margin-bottom: var(--space-10);
  line-height: var(--leading-relaxed);
}

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

/* ===== HERO VISUAL ===== */
.hero__visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero__canvas {
  width: 100%;
  height: 100%;
  pointer-events: auto;
}

/* ===== SERVICE CARDS ===== */
.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  transition: box-shadow var(--transition-slow), border-color var(--transition-base), transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  flex-direction: column;
  position: relative;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: transparent;
  transform: translateY(-4px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card .card__text {
  flex: 1;
}

.service-card .btn--ghost {
  align-self: flex-start;
  margin-top: var(--space-6);
}

/* ===== ADVANTAGES ===== */
.advantage {
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  transition: background var(--transition-slow), transform var(--transition-base), box-shadow var(--transition-slow);
}

.advantage:hover {
  background: var(--color-bg-alt);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.advantage__number {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.4;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.advantage h3 {
  margin-bottom: var(--space-3);
  font-size: var(--text-lg);
}

.advantage p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  transition: border-color var(--transition-base), box-shadow var(--transition-slow);
}

.faq-item:hover {
  border-color: var(--color-text-light);
}

.faq-item[open] {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.faq-question {
  padding: var(--space-5) var(--space-6);
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  user-select: none;
  transition: color var(--transition-base);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::marker {
  content: '';
}

.faq-question::after {
  content: '';
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-text-light);
  border-bottom: 2px solid var(--color-text-light);
  transform: rotate(45deg);
  flex-shrink: 0;
  transition: transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1), border-color var(--transition-base);
  margin-top: -4px;
}

.faq-item[open] .faq-question::after {
  transform: rotate(-135deg);
  border-color: var(--color-accent);
  margin-top: 4px;
}

.faq-item[open] .faq-question {
  color: var(--color-accent);
}

.faq-answer {
  padding: 0 var(--space-6) var(--space-6);
}

.faq-answer p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  font-size: var(--text-sm);
}

/* ===== CTA SECTION ===== */
.cta-section {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.cta-block {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-block h2 {
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

/* ===== CONTACTS ===== */
.contacts-grid {
  align-items: flex-start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

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

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

.form-input {
  padding: 14px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition-base), box-shadow 350ms ease, background var(--transition-base);
  outline: none;
  min-height: 48px;
  -webkit-appearance: none;
}

.form-input:hover {
  border-color: var(--color-text-light);
  background: var(--color-bg-alt);
}

.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
  background: var(--color-white);
}

.form-input::placeholder {
  color: var(--color-text-light);
}

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

.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  text-align: center;
  margin: 0;
  line-height: var(--leading-normal);
}

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

.form-input--error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===== CONSENT CHECKBOX ===== */
.form-consent {
  margin-top: var(--space-2);
}

.form-consent__label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.form-consent__checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form-consent__checkmark {
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 1.5px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  margin-top: 1px;
  background: var(--color-white);
}

.form-consent__checkbox:checked + .form-consent__checkmark {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.form-consent__checkbox:checked + .form-consent__checkmark::after {
  content: '';
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.form-consent__checkbox:focus-visible + .form-consent__checkmark {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.form-consent--error .form-consent__checkmark {
  border-color: var(--color-error);
}

.form-consent__link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.form-consent__link:hover {
  color: var(--color-accent-hover);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal, 1000);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay--open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-2xl);
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.modal-overlay--open .modal {
  transform: translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
}

.modal__close {
  min-width: 44px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  font-size: 1.5rem;
  color: var(--color-text-light);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.modal__close:hover {
  background: var(--color-bg-alt);
}

.modal__body {
  padding: var(--space-8);
  overflow-y: auto;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.modal__body h4 {
  font-size: var(--text-base);
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.modal__body p {
  margin-bottom: var(--space-3);
}

.modal__body a {
  color: var(--color-accent);
}

@media (max-width: 640px) {
  .modal {
    max-height: 90vh;
  }

  .modal__header {
    padding: var(--space-4) var(--space-5);
  }

  .modal__body {
    padding: var(--space-5);
  }
}

.form-success {
  text-align: center;
  padding: var(--space-16);
}

.form-success__icon {
  width: 64px;
  height: 64px;
  background: #D1FAE5;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  color: var(--color-success);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding-left: var(--space-16);
  border-left: 1px solid var(--color-border);
}

.contact-info__block h3 {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.contact-info__link {
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 4px 0;
}

.contact-info__link:hover {
  color: var(--color-accent);
}

.contact-info__block p {
  font-size: var(--text-lg);
  color: var(--color-text);
}

/* ===== DARK CARD (service detail) ===== */
.card--dark {
  background: var(--color-primary);
  border-color: transparent;
}

.card--dark:hover {
  box-shadow: var(--shadow-2xl);
}

.card--dark h4 {
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.card--dark p {
  color: var(--color-text-light);
  font-size: var(--text-sm);
}

/* Accent-bg card */
.card--accent-bg {
  background: var(--color-accent-subtle);
  border-color: transparent;
}

.card--accent-bg:hover {
  box-shadow: var(--shadow-lg);
}

/* ===== SCROLL ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
  .fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
  }

  .fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* Legacy class support */
  .fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
  }

  .fade-in--visible,
  .fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stagger delays for grid children */
@media (prefers-reduced-motion: no-preference) {
  .stagger > *:nth-child(1) { transition-delay: 0ms; }
  .stagger > *:nth-child(2) { transition-delay: 80ms; }
  .stagger > *:nth-child(3) { transition-delay: 160ms; }
  .stagger > *:nth-child(4) { transition-delay: 240ms; }
  .stagger > *:nth-child(5) { transition-delay: 320ms; }
}

/* ===== RESPONSIVE OVERRIDES (sections) ===== */
@media (max-width: 1024px) {
  .hero {
    min-height: auto;
    padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-16);
  }

  .hero__content h1 {
    max-width: 600px;
  }

  .hero__subtitle {
    max-width: 500px;
  }

  .contacts-grid {
    grid-template-columns: 1fr;
  }

  .contact-info {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-8);
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-8);
  }

  .contact-info__block {
    flex: 1;
    min-width: 180px;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: calc(var(--header-height) + var(--space-10)) 0 var(--space-12);
  }

  .hero__content h1 {
    font-size: var(--text-4xl);
  }

  .hero__content h1 br {
    display: none;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .service-card:hover {
    transform: none;
  }

  .service-card::before {
    opacity: 1;
  }

  .contact-info {
    flex-direction: column;
    gap: var(--space-6);
  }

  .advantage {
    padding: var(--space-4);
  }

  .cta-section .container {
    padding: var(--space-8) var(--space-4);
  }
}