/* =========================================
   HR NextGen Solutions v2 - Responsive
   ========================================= */

/* ---- Tablet: 1024px ---- */
@media (max-width: 1024px) {
  .services-grid       { grid-template-columns: repeat(2, 1fr); }
  .services-showcase .services-experience-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .services-full-grid  { grid-template-columns: repeat(2, 1fr); }
  .ai-products-grid    { grid-template-columns: repeat(2, 1fr); }
  .industries-grid     { grid-template-columns: repeat(2, 1fr); }
  .case-studies-grid   { grid-template-columns: repeat(2, 1fr); }
  .features-grid       { grid-template-columns: repeat(2, 1fr); }
  .why-us .why-us-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid         { grid-template-columns: 1fr 1fr; }
  .about-intro-grid    { grid-template-columns: 1fr; gap: var(--space-10); }
  .team-grid           { grid-template-columns: repeat(2, 1fr); }
  .contact-grid        { gap: var(--space-10); }
  .nav-mega            { min-width: 380px; }
  .process-steps       { grid-template-columns: repeat(3, 1fr); }
  .process-steps::before { display: none; }
  .process-line-fill   { display: none; }
  .hero-stats          { gap: 0; }
  .service-intelligence {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    padding: var(--space-6);
  }
  .service-intelligence-nav {
    flex-direction: row;
    overflow-x: auto;
    padding: var(--space-2);
    scroll-snap-type: x mandatory;
  }
  .service-intelligence-tab {
    min-width: 240px;
    scroll-snap-align: start;
  }
  .service-intelligence-tab:hover,
  .service-intelligence-tab:focus-visible,
  .service-intelligence-tab.is-active {
    transform: translateY(-2px);
  }
  .service-panel-body {
    grid-template-columns: 220px minmax(0, 1fr);
    min-height: 460px;
    padding: var(--space-6);
  }
}

/* ---- Large Mobile: 768px ---- */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
    --header-height-scrolled: 52px;
  }
  .section    { padding: var(--space-16) 0; }
  .container  { padding: 0 var(--space-5); }

  .header-nav   { display: none; }
  .header-cta .btn-primary { display: none; }
  .hamburger    { display: flex; }

  .services-grid      { grid-template-columns: 1fr; gap: var(--space-4); }
  .services-showcase { padding: var(--space-12) 0; }
  .services-showcase .services-experience-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .service-experience-card { min-height: 0; animation: none; }
  .service-card-surface { min-height: 360px; transform: none; }
  .service-experience-card:hover .service-card-surface { transform: translateY(-4px); }
  .ai-products-grid   { grid-template-columns: repeat(2, 1fr); }
  .industries-grid    { grid-template-columns: repeat(2, 1fr); }
  .features-grid      { grid-template-columns: 1fr; }
  .why-us { padding: var(--space-12) 0; }
  .why-us .why-us-card-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .why-us-card { min-height: 0; animation: none; }
  .why-us-card-surface { min-height: 300px; transform: none; }
  .why-us-card:hover .why-us-card-surface { transform: translateY(-4px); }
  .case-studies-grid  { grid-template-columns: 1fr; }
  .process-desktop    { display: none; }
  .process-mobile     { display: block; }
  .testimonial-slide  { padding: 0 var(--space-4); }
  .testimonial-card   { padding: var(--space-7) var(--space-6); }
  .testimonial-quote  { font-size: var(--text-base); }
  .testimonial-author { flex-direction: column; }
  .author-info        { text-align: center; }
  .contact-grid       { grid-template-columns: 1fr; gap: var(--space-10); }
  .form-row           { grid-template-columns: 1fr; }
  .footer-grid        { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom      { flex-direction: column; text-align: center; }
  .hero-stats         { flex-wrap: wrap; }
  .hero-stat          { min-width: 45%; }
  .hero-stat:not(:last-child)::after { display: none; }
  .about-stats-grid   { grid-template-columns: 1fr 1fr; }
  .team-grid          { grid-template-columns: 1fr 1fr; }
  .section-header     { margin-bottom: var(--space-10); }
  .section-header p   { font-size: var(--text-base); }
  .marquee-wrapper::before,
  .marquee-wrapper::after { width: 60px; }
  .page-hero { padding-top: calc(var(--header-height) + var(--space-10)); }
  .page-hero h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); }
  .page-hero p  { font-size: var(--text-base); }
  .service-intelligence {
    min-height: 0;
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }
  .service-intelligence-nav {
    display: none;
  }
  .service-intelligence-stage {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }
  .service-intelligence-panel,
  .service-intelligence-panel.is-active {
    display: block;
    height: auto;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.78);
  }
  .service-panel-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    width: 100%;
    padding: var(--space-4) var(--space-5);
    border: 0;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    text-align: left;
  }
  .service-panel-toggle svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
    flex-shrink: 0;
    transition: transform var(--transition-base);
  }
  .service-intelligence-panel.is-active .service-panel-toggle svg {
    transform: rotate(180deg);
  }
  .service-panel-body {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
    min-height: 0;
    max-height: 0;
    overflow: hidden;
    padding: 0 var(--space-5);
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 0;
    transition: max-height var(--transition-slow), padding var(--transition-slow), opacity var(--transition-base);
  }
  .service-intelligence-panel.is-active .service-panel-body {
    max-height: 980px;
    padding: 0 var(--space-5) var(--space-5);
    opacity: 1;
  }
  .service-panel-visual {
    width: 180px;
    order: -1;
  }
  .service-panel-copy h2 {
    font-size: var(--text-2xl);
  }
  .service-intelligence-list {
    grid-template-columns: 1fr;
  }
}

/* ---- Small Mobile: 480px ---- */
@media (max-width: 480px) {
  .hero-inner        { padding: calc(var(--header-height) + var(--space-12)) var(--space-5) var(--space-12); }
  .hero p            { font-size: var(--text-base); }
  .btn-group         { flex-direction: column; align-items: stretch; }
  .btn-group .btn    { justify-content: center; }
  .hero-stat-value   { font-size: var(--text-3xl); }
  .hero-stat         { min-width: 100%; }
  .ai-products-grid  { grid-template-columns: 1fr; }
  .industries-grid   { grid-template-columns: 1fr; }
  .contact-form-card { padding: var(--space-6); }
  .footer-legal-links{ flex-direction: column; align-items: center; gap: var(--space-3); }
  .section           { padding: var(--space-12) 0; }
  .section-header    { margin-bottom: var(--space-8); }
  .team-grid         { grid-template-columns: 1fr; }
  .about-stats-grid  { grid-template-columns: 1fr; }
  .case-study-results{ grid-template-columns: 1fr; text-align: center; }
  .services-full-grid{ grid-template-columns: 1fr; }
  .service-intelligence {
    padding: var(--space-3);
  }
  .service-panel-toggle {
    padding: var(--space-4);
  }
  .service-intelligence-panel.is-active .service-panel-body {
    padding: 0 var(--space-4) var(--space-4);
  }
  .service-panel-visual {
    width: 150px;
  }
  .service-visual-core {
    width: 76px;
    height: 76px;
    border-radius: 22px;
  }
  .service-visual-core svg {
    width: 30px;
    height: 30px;
  }
  .why-us-card-surface { min-height: 0; padding: var(--space-5); border-radius: var(--radius-lg); }
  .why-us-icon-wrap { width: 72px; height: 72px; margin-bottom: var(--space-4); }
  .why-us-icon-core svg { width: 28px; height: 28px; }
  .service-card-surface { min-height: 0; padding: var(--space-5); border-radius: var(--radius-lg); }
  .service-card-kicker { white-space: normal; }
  .service-icon-stage { width: 88px; height: 88px; margin-bottom: var(--space-5); }
  .service-icon-core svg { width: 30px; height: 30px; }
  .testimonial-slide { padding: 0 var(--space-2); }
  .testimonial-card  { padding: var(--space-5); }
  .back-to-top       { bottom: var(--space-4); right: var(--space-4); }
  .btn-xl            { padding: 14px 28px; font-size: var(--text-base); }
}

/* ---- Tablet: 1024px — page templates ---- */
@media (max-width: 1024px) {
  .about-stats-grid        { grid-template-columns: repeat(2, 1fr); }
  .service-full-card       { grid-template-columns: 80px 1fr; }
  .case-study-full-body    { grid-template-columns: 1fr; }
  .case-study-results      { justify-content: flex-start; }
}

/* ---- Large Mobile: 768px — page templates ---- */
@media (max-width: 768px) {
  .about-intro-grid          { grid-template-columns: 1fr; gap: var(--space-10); }
  .about-stats-grid          { grid-template-columns: repeat(2, 1fr); }
  .about-badges              { grid-template-columns: 1fr 1fr; }
  .service-full-card         { grid-template-columns: 1fr; }
  .service-full-card__icon   { padding-top: 0; }
  .service-sub-list          { grid-template-columns: 1fr; }
  .industry-detail-row       { grid-template-columns: 1fr; gap: var(--space-4); }
  .industry-feature-list     { grid-template-columns: 1fr; }
  .case-study-full-body      { gap: var(--space-6); }
  .case-study-results        { flex-wrap: wrap; gap: var(--space-4); }
}

/* ---- Small Mobile: 480px — page templates ---- */
@media (max-width: 480px) {
  .about-stats-grid   { grid-template-columns: 1fr 1fr; }
  .about-badges       { grid-template-columns: 1fr; }
  .case-study-results { flex-direction: column; align-items: flex-start; }
}

/* ---- Wide Desktop ---- */
@media (min-width: 1280px) {
  .hero h1 { font-size: 4.2rem; }
}