/* ==========================================================================
   BIRMINGHAM SOCIAL AND CULTURAL ORGANISATION (BSCO) - UK
   Comprehensive Responsive Stylesheet (320px to 1440px+)
   ========================================================================== */

/* Prevent horizontal overflow on all screen sizes */
html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* ==========================================================================
   Large Desktop (1440px and below)
   ========================================================================== */
@media (max-width: 1440px) {
  .hero-title {
    font-size: 46px;
  }
}

/* ==========================================================================
   Medium Desktop & Laptops (1199px and below)
   ========================================================================== */
@media (max-width: 1199px) {
  .container {
    max-width: 960px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav-menu {
    gap: 18px;
  }

  .nav-link {
    font-size: 14px;
    padding: 6px 2px;
  }

  .hero-title {
    font-size: 42px;
  }

  .values-grid {
    gap: 16px;
  }

  .value-card {
    padding: 24px 16px 20px 16px;
  }

  .about-title {
    font-size: 30px;
  }

  .footer-grid {
    grid-template-columns: 1.3fr 0.9fr 0.9fr 1fr;
    gap: 28px;
  }
}

/* ==========================================================================
   Tablets & Landscape Mobile (991px and below)
   ========================================================================== */
@media (max-width: 991px) {
  .container {
    max-width: 720px;
    padding-left: 18px;
    padding-right: 18px;
  }

  /* Navigation Drawer Switch */
  .nav-menu {
    display: none;
  }

  .hamburger-btn {
    display: flex;
  }

  .top-bar-left {
    gap: 16px;
  }

  /* Logo adjustment for tablets */
  .brand-logo img {
    height: 40px;
    max-width: 200px;
  }

  /* Hero Section */
  .hero-section {
    padding: 48px 0 68px 0;
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }

  .hero-eyebrow {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-title {
    font-size: 38px;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
    max-width: 600px;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-artwork {
    max-width: 360px;
    margin: 0 auto;
  }

  /* Values Section */
  .values-section {
    margin-top: -24px;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  /* About Section */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .about-content-col {
    padding-left: 0;
  }

  /* Statistics */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  /* Activities */
  .activities-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* Events */
  .events-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* Membership Grid */
  .membership-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  /* Sponsors Grid */
  .sponsors-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  /* Bank Details */
  .bank-details-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* Newsletter */
  .newsletter-card {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px 24px;
    text-align: center;
  }

  .newsletter-form {
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }
}

/* ==========================================================================
   Small Tablets & Large Mobile Devices (768px and below)
   ========================================================================== */
@media (max-width: 768px) {
  .container {
    max-width: 100%;
    padding-left: 16px;
    padding-right: 16px;
  }

  .top-bar {
    display: none; /* Hide top utility bar on mobile to maximise viewport space */
  }

  .main-nav-wrapper {
    height: 64px;
  }

  .brand-logo img {
    height: 38px;
    max-width: 180px;
  }

  .nav-cta-btn {
    display: none; /* Accessible inside mobile drawer menu */
  }

  .nav-actions {
    gap: 8px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-description {
    font-size: 14px;
  }

  .values-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .values-section {
    margin-top: 20px;
  }

  .about-title {
    font-size: 26px;
  }

  .about-features-list {
    grid-template-columns: 1fr;
  }

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

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

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

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

  .sponsors-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 40px;
  }

  .footer-bottom-bar .container {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }

  .floating-actions {
    right: 14px;
    bottom: 16px;
    gap: 8px;
  }

  .float-btn {
    width: 42px;
    height: 42px;
    font-size: 17px;
  }

  .lightbox-prev-btn {
    left: 8px;
  }

  .lightbox-next-btn {
    right: 8px;
  }

  /* Table responsiveness for activities & membership pages */
  .table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 16px;
  }
}

/* ==========================================================================
   Standard Mobile Phones (480px and below)
   ========================================================================== */
@media (max-width: 480px) {
  .container {
    padding-left: 14px;
    padding-right: 14px;
  }

  .main-nav-wrapper {
    height: 60px;
  }

  .brand-logo img {
    height: 34px;
    max-width: 160px;
  }

  .hero-section {
    padding: 36px 0 48px 0;
  }

  .hero-title {
    font-size: 28px;
    line-height: 1.25;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .btn-hero-primary,
  .btn-hero-secondary {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .stat-card {
    padding: 20px 16px;
  }

  .stat-number {
    font-size: 28px;
  }

  .section-main-heading {
    font-size: 26px;
  }

  .bank-details-card {
    padding: 22px 16px;
  }

  .bank-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .bank-details-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .bank-value.font-mono {
    font-size: 15px;
  }

  .newsletter-card {
    padding: 22px 16px;
  }

  .newsletter-form {
    flex-direction: column;
    border: none;
    background: transparent;
    gap: 8px;
  }

  .newsletter-input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
  }

  .newsletter-btn {
    width: 100%;
    border-radius: var(--radius-sm);
    padding: 12px 14px;
  }

  .mobile-nav-drawer {
    width: 88vw;
    max-width: 320px;
  }

  .mobile-nav-header img {
    height: 36px;
    max-width: 160px;
  }
}

/* ==========================================================================
   Ultra-Compact Mobile Phones (375px and 320px)
   ========================================================================== */
@media (max-width: 375px) {
  .container {
    padding-left: 12px;
    padding-right: 12px;
  }

  .main-nav-wrapper {
    height: 56px;
  }

  .brand-logo img {
    height: 30px;
    max-width: 135px;
  }

  .nav-actions {
    gap: 5px;
  }

  .hamburger-btn,
  .search-toggle-btn {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .hero-title {
    font-size: 24px;
  }

  .hero-description {
    font-size: 13px;
  }

  .section-main-heading {
    font-size: 23px;
  }

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

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .value-card {
    padding: 18px 14px;
  }

  .footer-col-brand .footer-logo {
    height: 40px;
    max-width: 190px;
  }

  .mobile-nav-drawer {
    width: 92vw;
  }

  .mobile-nav-header img {
    height: 32px;
    max-width: 140px;
  }

  .mobile-nav-links {
    padding: 16px;
    gap: 8px;
  }

  .mobile-nav-link {
    font-size: 15px;
    padding: 8px 10px;
  }
}