/* ==========================================================================
   TITANIUM EVENTS DUBAI — RESPONSIVE STYLESHEET
   Mobile-first breakpoints
   ========================================================================== */

/* --------------------------------------------------------------------------
   BREAKPOINTS
   sm:  640px  (large phones)
   md:  768px  (tablets portrait)
   lg:  1024px (tablets landscape / small laptops)
   xl:  1280px (desktops)
   2xl: 1440px (large desktops)
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   XL DESKTOP (≤ 1280px)
   -------------------------------------------------------------------------- */
@media (max-width: 1280px) {
  :root { --nav-height: 72px; }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: var(--space-8);
  }

  .mega-menu {
    width: 700px;
  }

  .stats-grid,
  .stats-bar__grid {
    gap: var(--space-6);
  }

  .hero__title {
    font-size: clamp(2.2rem, 4.5vw, 5rem);
  }
}

/* --------------------------------------------------------------------------
   LARGE TABLET / SMALL LAPTOP (≤ 1024px)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --nav-height: 68px;
  }

  /* Navigation — switch to hamburger */
  .primary-nav,
  .header-cta .btn--lg {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: block;
  }

  /* Hero */
  .hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
  }

  .hero__subtitle {
    font-size: var(--fs-base);
  }

  /* Feature block */
  .feature-block,
  .feature-block__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .feature-block--reverse {
    direction: ltr;
  }

  /* Process steps */
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .process-steps::before {
    display: none;
  }

  /* Stats */
  .stats-grid,
  .stats-bar__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6) var(--space-8);
  }

  .stat-item:not(:last-child)::after {
    display: none;
  }

  /* Benefits grid */
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Proposal step indicator labels */
  .step-indicator__label {
    display: none;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10) var(--space-8);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  /* Section title */
  .section-title {
    font-size: var(--fs-3xl);
  }

  /* Service cards */
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Related services */
  .related-services {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Contact grid */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  /* Portfolio */
  .portfolio-card--featured {
    grid-column: span 1;
  }

  /* Form grid */
  .form-grid {
    grid-template-columns: 1fr;
  }

  /* CTA banner */
  .cta-banner__title {
    font-size: var(--fs-3xl);
  }

  /* Proposal form */
  .proposal-form {
    padding: var(--space-8);
  }
}

/* --------------------------------------------------------------------------
   TABLET PORTRAIT (≤ 768px)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  /* Typography */
  .section-title {
    font-size: var(--fs-2xl);
  }

  .section-subtitle {
    font-size: var(--fs-base);
  }

  .hero__title {
    font-size: clamp(1.8rem, 6vw, 2.8rem);
  }

  /* Grid overrides */
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  /* Stats */
  .stats-grid,
  .stats-bar__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  /* Benefits grid */
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hero actions */
  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Section padding */
  .section {
    padding: var(--space-16) 0;
  }

  .section--lg {
    padding: var(--space-20) 0;
  }

  /* Feature block */
  .feature-block,
  .feature-block__grid {
    gap: var(--space-8);
  }

  .feature-block__image {
    aspect-ratio: 16/9;
  }

  /* Process steps */
  .process-steps {
    grid-template-columns: 1fr;
  }

  /* CTA */
  .cta-banner {
    padding: var(--space-16) 0;
  }

  .cta-banner__title {
    font-size: var(--fs-2xl);
  }

  .cta-banner__actions {
    flex-direction: column;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-top {
    padding: var(--space-16) 0 var(--space-12);
  }

  .footer-bottom__inner {
    flex-direction: column;
    text-align: center;
  }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  /* Related services */
  .related-services {
    grid-template-columns: 1fr;
  }

  /* Exec summary */
  .exec-summary {
    padding: var(--space-6) var(--space-6);
  }

  .exec-summary__text {
    font-size: var(--fs-md);
  }

  /* Blog */
  .blog-card { }

  /* Proposal form */
  .proposal-form {
    padding: var(--space-6);
  }

  /* Map */
  .map-embed {
    height: 280px;
  }

  /* Clients */
  .clients-logos {
    gap: var(--space-8);
  }

  /* Header CTA */
  .header-cta {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   MOBILE (≤ 640px)
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  :root {
    --nav-height: 60px;
  }

  /* Container */
  .container,
  .container--wide {
    width: 94%;
  }

  /* Hero */
  .hero {
    min-height: 90vh;
  }

  .hero--page {
    min-height: 50vh;
  }

  .hero__title {
    font-size: clamp(1.6rem, 7vw, 2.4rem);
  }

  .hero__inner {
    padding: 0 var(--space-4);
  }

  /* Typography */
  .section-title {
    font-size: var(--fs-xl);
  }

  /* Stats */
  .stats-grid,
  .stats-bar__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .stat-number {
    font-size: var(--fs-4xl);
  }

  /* Benefits grid — single column on mobile */
  .benefits-grid {
    grid-template-columns: 1fr;
  }

  /* Form grid — single column on mobile */
  .form-grid {
    grid-template-columns: 1fr;
  }

  /* Buttons */
  .btn--lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--fs-sm);
  }

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

  /* Hero actions */
  .hero__actions .btn {
    width: auto;
  }

  /* Process steps */
  .process-step__number {
    width: 44px;
    height: 44px;
    font-size: var(--fs-lg);
  }

  /* FAQ */
  .faq-question {
    font-size: var(--fs-base);
    padding: var(--space-4) var(--space-5);
  }

  /* Navigation */
  .site-header__inner {
    padding: 0 var(--space-4);
  }

  /* Footer */
  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
  }

  /* Form */
  .form-grid {
    grid-template-columns: 1fr;
  }

  /* Section */
  .section {
    padding: var(--space-12) 0;
  }

  /* CTA banner */
  .cta-banner {
    padding: var(--space-12) 0;
  }

  /* Testimonial */
  .testimonial-card {
    padding: var(--space-5);
  }

  /* Blog */
  .blog-card__title {
    font-size: var(--fs-lg);
  }

  /* Exec summary */
  .exec-summary {
    padding: var(--space-5);
    margin: var(--space-10) auto;
  }

  /* Proposal */
  .proposal-form {
    padding: var(--space-5);
    border-radius: var(--border-radius-md);
  }

  /* Mobile nav */
  .mobile-nav {
    padding: var(--space-5);
  }

  .mobile-nav-link {
    font-size: var(--fs-xl);
  }
}

/* --------------------------------------------------------------------------
   REDUCED MOTION
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html { scroll-behavior: auto; }

  .reveal,
  .reveal--left,
  .reveal--right {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   DARK MODE (optional — currently commented out)
   -------------------------------------------------------------------------- */
/*
@media (prefers-color-scheme: dark) {
  // Dark mode overrides would go here
}
*/

/* --------------------------------------------------------------------------
   HIGH CONTRAST
   -------------------------------------------------------------------------- */
@media (forced-colors: active) {
  .btn--primary {
    border: 2px solid ButtonText;
  }
}

/* --------------------------------------------------------------------------
   LARGE SCREENS (≥ 1440px) — fine-tuning
   -------------------------------------------------------------------------- */
@media (min-width: 1440px) {
  .hero__title {
    font-size: 5.5rem;
  }

  .section {
    padding: var(--space-32) 0;
  }

  .stats-grid,
  .stats-bar__grid {
    gap: var(--space-12);
  }
}