/* =========================================
   BRIGHTSMILE DENTAL — RESPONSIVE OVERRIDES
   Mobile-first cascade: lg → md → sm → xs
   Breakpoints:
     lg:  1024px
     md:   768px
     sm:   640px
     xs:   480px
   ========================================= */

/* ─────────────────────────────────────────
   GLOBAL / LAYOUT
───────────────────────────────────────── */

/* Prevent any element from overflowing the viewport */
html, body { overflow-x: hidden; }

/* Section vertical rhythm */
@media (max-width: 640px) {
  .section {
    padding-block: 48px;
  }
}

@media (max-width: 480px) {
  .section {
    padding-block: 40px;
  }
}

/* Container horizontal padding */
@media (max-width: 640px) {
  .container,
  .container--wide,
  .container--narrow {
    padding-inline: 20px;
  }
}

/* Page hero */
@media (max-width: 640px) {
  .page-hero {
    padding-block: 36px 32px;
  }

  .page-hero__title {
    font-size: clamp(1.6rem, 7vw, 2.2rem);
  }

  .page-hero__sub {
    font-size: 15px;
    line-height: 1.6;
  }
}

/* Section headers */
@media (max-width: 640px) {
  .section-header__title {
    font-size: clamp(1.45rem, 6vw, 2rem);
  }

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

/* ─────────────────────────────────────────
   CTA STRIP
───────────────────────────────────────── */

@media (max-width: 768px) {
  .cta-strip {
    padding-block: 72px;
  }

  .cta-strip__inner {
    padding: 48px 32px;
  }
}

@media (max-width: 480px) {
  .cta-strip {
    padding-block: 56px;
  }

  .cta-strip__inner {
    padding: 36px 20px;
    border-radius: 18px;
  }

  .cta-strip__title {
    font-size: clamp(1.4rem, 6vw, 1.8rem);
  }

  .cta-strip__subtitle,
  .cta-strip__sub {
    font-size: 14.5px;
    margin-bottom: var(--space-5);
  }

  .cta-strip__actions {
    flex-direction: column;
    align-items: stretch;
  }

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

/* ─────────────────────────────────────────
   NAVIGATION
───────────────────────────────────────── */

@media (max-width: 640px) {
  .emergency-banner__text {
    font-size: 13px;
  }
}

/* ─────────────────────────────────────────
   HOMEPAGE
───────────────────────────────────────── */

@media (max-width: 640px) {
  .hero {
    padding-block: var(--space-8) var(--space-6);
  }

  .hero h1 {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
    line-height: 1.15;
  }

  .hero__subtitle {
    font-size: 15px;
    max-width: 100%;
  }

  .hero__badge {
    font-size: 11px;
    padding: 6px 12px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

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

  .hero__stat-card {
    display: none;
  }
}

@media (max-width: 640px) {
  .trust-bar {
    padding-block: var(--space-4);
  }

  .trust-bar__item {
    font-size: var(--text-xs);
    gap: 6px;
  }
}

/* Stats section */
@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .stat-block__number {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }

  .stat-block__label {
    font-size: var(--text-xs);
  }
}

/* Testimonials */
@media (max-width: 640px) {
  .testimonial-card {
    padding: var(--space-4) var(--space-3);
  }

  .testimonial-card__quote {
    font-size: var(--text-base);
    padding-left: var(--space-2);
  }
}

/* ─────────────────────────────────────────
   BOOKING FORM
───────────────────────────────────────── */

/* Stepper */
@media (max-width: 640px) {
  .form-progress {
    padding: 16px 16px 14px;
    margin-bottom: 24px;
    border-radius: 12px;
  }

  .form-progress__num {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }

  .form-progress__step:not(:last-child)::after {
    top: 18px;
    left: calc(50% + 22px);
    right: calc(-50% + 22px);
  }
}

@media (max-width: 480px) {
  .form-progress__label {
    font-size: 10px;
    letter-spacing: 0;
  }

  .form-progress__num {
    width: 32px;
    height: 32px;
    font-size: 11px;
  }

  .form-progress__step:not(:last-child)::after {
    top: 16px;
    left: calc(50% + 20px);
    right: calc(-50% + 20px);
  }
}

/* Service tiles — 2-col on small mobile */
@media (max-width: 480px) {
  .service-tiles {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
}

/* Booking info panel moves below form on mobile */
@media (max-width: 640px) {
  .booking-info-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }

  .info-panel-card--emergency {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .booking-info-panel {
    grid-template-columns: 1fr;
  }
}

/* Time slots */
@media (max-width: 480px) {
  .time-slots {
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
    gap: 6px;
  }

  .time-slot-label {
    font-size: 12px;
    padding: 8px 4px;
  }
}

/* Form inputs — 16px prevents iOS zoom-on-focus */
@media (max-width: 640px) {
  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px;
  }

  .form-step {
    padding: var(--space-4) var(--space-3);
    border-radius: 12px;
  }

  .form-step__title {
    font-size: 18px;
  }

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

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

  /* Summary rows narrower label */
  .booking-summary__row {
    grid-template-columns: 90px 1fr;
    gap: var(--space-1);
  }
}

/* ─────────────────────────────────────────
   GALLERY
   (All gallery mobile styles now live in
   css/pages/gallery.css for maintainability)
───────────────────────────────────────── */

/* ─────────────────────────────────────────
   PRICING
───────────────────────────────────────── */

@media (max-width: 640px) {
  /* Pricing tabs scroll horizontally */
  .pricing-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
    margin-inline: -20px;
    padding-inline: 20px;
  }

  .pricing-tabs::-webkit-scrollbar { display: none; }

  .pricing-tab-btn {
    padding: 8px 14px;
    font-size: 13px;
    white-space: nowrap;
  }

  /* Pricing table horizontal scroll */
  .pricing-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-inline: -20px;
    padding-inline: 20px;
  }

  .pricing-table {
    min-width: 500px;
  }

  /* Plan cards */
  .plan-cards {
    gap: var(--space-4);
  }

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

  .plan-card__amount {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }
}

/* insurance-logos-grid mobile handled in @media (max-width: 640px) above */

/* ─────────────────────────────────────────
   PATIENT RESOURCES
───────────────────────────────────────── */

/* Resource tabs */
@media (max-width: 640px) {
  .resources-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
    gap: 4px;
    margin-inline: -20px;
    padding-inline: 20px;
  }

  .resources-tabs::-webkit-scrollbar { display: none; }

  .resources-tab-btn {
    padding: 8px 14px;
    font-size: 13px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* Aftercare grid — single column */
  .aftercare-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .aftercare-card__steps {
    padding: 16px 20px 4px;
    padding-left: 36px;
  }

  .aftercare-card__steps li {
    font-size: 13px;
    line-height: 1.6;
  }

  /* FAQ categories */
  .faq-category {
    padding: var(--space-4);
  }

  /* Education grid — already auto-fit but tighten */
  .education-grid {
    gap: var(--space-3);
  }
}

@media (max-width: 480px) {
  .form-download-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3);
  }

  .form-download-card__actions {
    width: 100%;
  }
}

/* ─────────────────────────────────────────
   CONTACT
───────────────────────────────────────── */

@media (max-width: 640px) {
  .contact-location-card {
    padding: var(--space-4);
  }

  .contact-phone {
    font-size: var(--text-xl);
  }

  .contact-side-card {
    padding: var(--space-4);
  }

  .social-strip {
    gap: var(--space-2);
    flex-wrap: wrap;
  }

  .social-card {
    min-width: auto;
    flex: 1 1 calc(50% - var(--space-2));
  }
}

@media (max-width: 480px) {
  .social-card {
    flex: 1 1 100%;
  }

  .response-time-item {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }
}

/* ─────────────────────────────────────────
   SERVICES
───────────────────────────────────────── */

@media (max-width: 640px) {
  /* Services tabs — horizontal scroll */
  .services-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
    margin-inline: -20px;
    padding-inline: 20px;
  }

  .services-tabs::-webkit-scrollbar { display: none; }

  .services-tabs__btn {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 13px;
  }

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

  .service-panel__header h2 {
    font-size: clamp(1.4rem, 6vw, 1.8rem);
  }

  .service-detail__body {
    padding: var(--space-4) var(--space-3);
  }
}

/* ─────────────────────────────────────────
   ABOUT
───────────────────────────────────────── */

@media (max-width: 640px) {
  /* Timeline scrolls horizontally */
  .timeline--horizontal {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin-inline: -20px;
    padding-inline: 20px;
    padding-bottom: 8px;
  }

  .timeline--horizontal::-webkit-scrollbar { display: none; }

  .timeline--horizontal .timeline__item {
    min-width: 130px;
    font-size: var(--text-xs);
  }

  .doctor-profile-card {
    gap: var(--space-3);
    padding: var(--space-4);
  }
}

/* ─────────────────────────────────────────
   ACCORDION (global)
───────────────────────────────────────── */

@media (max-width: 640px) {
  .accordion {
    gap: 6px;
  }

  .accordion-trigger {
    padding: 16px 16px;
    font-size: 14px;
    line-height: 1.5;
  }

  .accordion-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
  }

  .accordion-panel__inner {
    padding: 4px 16px 18px;
    font-size: 13.5px;
  }
}

/* ─────────────────────────────────────────
   BUTTONS (global)
───────────────────────────────────────── */

@media (max-width: 480px) {
  .btn--lg {
    padding: 14px 24px;
    font-size: 15px;
  }
}

/* ─────────────────────────────────────────
   FLOATING BOOK BUTTON
───────────────────────────────────────── */

@media (max-width: 640px) {
  /* Convert to full-width sticky bottom bar — no content overlap */
  .floating-book-btn {
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 0;
    justify-content: center;
    padding: 14px 20px;
    padding-bottom: max(14px, env(safe-area-inset-bottom));
    font-size: 15px;
    font-weight: 600;
    gap: 8px;
    box-shadow: 0 -2px 16px rgba(27, 58, 107, 0.18);
  }

  .floating-book-btn svg {
    width: 18px;
    height: 18px;
  }

  /* Push all page content above the sticky bar */
  body {
    padding-bottom: calc(56px + env(safe-area-inset-bottom));
  }
}

/* ─────────────────────────────────────────
   CARDS & GRIDS (global)
───────────────────────────────────────── */

@media (max-width: 640px) {
  /* Insurance logos — compact 2-col grid */
  .insurance-logos-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .insurance-logo-card {
    padding: 16px 12px 14px;
    gap: 10px;
    border-radius: 14px;
  }

  .insurance-logo-card__visual {
    height: 48px;
    border-radius: 10px;
    font-size: 12.5px;
    letter-spacing: -0.02em;
  }

  .insurance-logo-card__name {
    font-size: 12px;
    font-weight: 700;
    line-height: 1.2;
  }

  .insurance-logo-card .badge--teal {
    font-size: 9px;
    padding: 3px 9px;
    letter-spacing: 0.06em;
  }

  /* Plan cards */
  .financing-options {
    gap: var(--space-3);
  }

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

/* ─────────────────────────────────────────
   MODAL
───────────────────────────────────────── */

@media (max-width: 640px) {
  /* Overlay: align top so tall modals aren't clipped above the fold */
  .modal-overlay {
    align-items: flex-start;
    padding: 16px;
    padding-top: max(16px, env(safe-area-inset-top));
  }

  /* Modal: flex column so header is always pinned, body scrolls */
  .modal {
    margin: 0 auto;
    width: 100%;
    max-height: calc(100dvh - 32px);
    border-radius: 16px;
    /* Flex column: header shrinks to its own height, body fills rest */
    display: flex;
    flex-direction: column;
    /* Don't let the modal itself scroll — body will scroll instead */
    overflow: hidden;
  }

  /* Header: always visible, never scrolls away */
  .modal__header {
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 16px 20px 14px;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
  }

  /* Body: takes remaining height, scrolls independently */
  .modal__body {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch; /* smooth momentum scroll on iOS */
    overscroll-behavior: contain;      /* prevent background scroll bleed */
    padding: 20px 20px 40px;           /* extra bottom pad so CTA isn't hidden */
    padding-bottom: max(40px, env(safe-area-inset-bottom));
  }

  /* Footer: pinned at bottom if present */
  .modal__footer {
    flex-shrink: 0;
    padding: 12px 20px max(16px, env(safe-area-inset-bottom));
    border-top: 1px solid var(--color-border);
    background: var(--color-white);
  }
}

/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */

@media (max-width: 640px) {
  .footer__grid {
    gap: var(--space-6);
  }
}