/* ==========================================================================
   NOVERA PUBLICATION — RESPONSIVE STYLESHEET
   Version 2.5 Design System
   Breakpoints: 1140px, 1024px, 768px, 480px, 360px
   Robust, zero-distortion responsive architecture for Namecheap cPanel & modern browsers
   ========================================================================== */

/* Universal Layout Safeguards */
html, body {
  overflow-x: hidden !important;
  width: 100% !important;
  max-width: 100vw !important;
}

*, *::before, *::after {
  box-sizing: border-box;
}

/* Accessible Mobile Hamburger Menu Toggle */
.mobile-nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 8px;
  color: var(--color-charcoal);
  cursor: pointer;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.mobile-nav-toggle:hover {
  background-color: var(--color-soft-cream);
  border-color: var(--color-border);
}

.mobile-nav-toggle:focus-visible {
  outline: 2px solid var(--color-copper);
}

.mobile-drawer {
  display: none;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 24px;
  width: 100%;
}

.mobile-drawer.is-open {
  display: block;
}

.mobile-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 20px;
}

.mobile-links a {
  padding-block: 8px;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-charcoal);
  transition: color var(--transition-fast);
}

.mobile-links a:hover {
  color: var(--color-forest);
}

/* ==========================================================================
   1. LAPTOP / MEDIUM DESKTOP (Max 1140px)
   Prevents desktop header wrapping, overlap, or overflow
   ========================================================================== */
@media (max-width: 1140px) {
  .desktop-nav {
    display: none !important;
  }

  .mobile-nav-toggle {
    display: flex !important;
  }

  .header-whatsapp-btn span {
    display: none;
  }

  .header-whatsapp-btn {
    padding: 8px 12px;
  }

  .header-inner {
    padding-inline: 16px;
  }
}

/* ==========================================================================
   2. TABLET & SMALLER LAPTOPS (Max 1024px)
   ========================================================================== */
@media (max-width: 1024px) {
  .container {
    width: min(var(--container-max), calc(100% - 36px));
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-title {
    font-size: clamp(34px, 4.5vw, 44px);
  }

  .hero-composition {
    max-width: 680px;
    margin-inline: auto;
    width: 100%;
  }

  .experience-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .dark-feature-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .services-subgrid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .editorial-timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .why-grid-6 {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .process-timeline-horizontal {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .ethics-card-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Testimonials Tablet Layout */
  .testimonials-metrics-ribbon {
    grid-template-columns: repeat(2, 1fr);
  }

  .metric-ribbon-item:nth-child(2) {
    border-right: none;
  }

  .metric-ribbon-item:nth-child(1),
  .metric-ribbon-item:nth-child(2) {
    border-bottom: 1px solid var(--color-border-subtle);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .bookshelf-carousel-container {
    max-width: 100%;
    overflow: hidden;
  }
}

/* ==========================================================================
   3. MOBILE DEVICES (Max 768px)
   ========================================================================== */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .container {
    width: min(var(--container-max), calc(100% - 28px));
  }

  /* Header Optimization */
  .site-header {
    height: 64px;
  }

  .header-inner {
    height: 64px;
    min-height: 64px;
    padding-inline: 16px;
    gap: 10px;
  }

  .logo-main {
    font-size: 21px;
  }

  .logo-sub {
    font-size: 8.5px;
    letter-spacing: 0.2em;
  }

  .header-actions {
    gap: 8px;
  }

  .header-whatsapp-btn {
    width: 38px;
    height: 38px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xs);
  }

  .header-whatsapp-btn svg {
    width: 18px;
    height: 18px;
  }

  .header-whatsapp-btn span {
    display: none;
  }

  .header-cta-btn {
    padding: 8px 14px;
    font-size: 12.5px;
  }

  .mobile-nav-toggle {
    width: 38px;
    height: 38px;
    padding: 7px;
  }

  .mobile-nav-toggle svg {
    width: 22px;
    height: 22px;
  }

  /* Section Spacing & Typography */
  .section-spacing {
    padding-block: 54px;
  }

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

  .hero-title {
    font-size: clamp(28px, 6.5vw, 36px);
    line-height: 1.18;
  }

  .hero-lead {
    font-size: 15.5px;
    line-height: 1.6;
    margin-bottom: 24px;
  }

  .section-title {
    font-size: clamp(24px, 5.5vw, 30px);
  }

  .section-lead {
    font-size: 15px;
  }

  .experience-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .experience-item {
    padding-left: 16px;
  }

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

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

  .service-editorial-row {
    padding: 22px 18px;
  }

  .editorial-row-header {
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
  }

  .editorial-timeline {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .why-grid-6 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .process-timeline-horizontal {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  /* Testimonials Mobile Layout */
  .testimonials-section {
    padding-block: 60px;
  }

  .testimonials-metrics-ribbon {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 24px;
  }

  .metric-ribbon-item {
    padding: 18px 14px;
  }

  .metric-ribbon-value {
    font-size: 26px;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 28px;
  }

  .testimonial-card {
    padding: 24px 20px;
  }

  .testimonial-text {
    font-size: 14.5px;
    line-height: 1.6;
  }

  /* Consultation Form Mobile */
  .form-grid-2 {
    grid-template-columns: 1fr !important;
    gap: 14px;
  }

  .service-checkbox-grid {
    grid-template-columns: 1fr !important;
    gap: 8px;
  }

  .intake-card {
    padding: 24px 18px;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
    padding-top: 18px;
  }

  .bookshelf-carousel-container {
    max-width: 100%;
    overflow: hidden;
  }

  .book-card {
    width: 210px;
  }

  .book-cover {
    height: 290px;
    padding: 20px;
  }

  .modal-metadata-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .whatsapp-float {
    bottom: 18px;
    right: 18px;
    width: 50px;
    height: 50px;
  }

  .whatsapp-float svg {
    width: 26px;
    height: 26px;
  }

  .whatsapp-tooltip {
    display: none !important;
  }
}

/* ==========================================================================
   4. SMALL PHONES (Max 480px)
   ========================================================================== */
@media (max-width: 480px) {
  .container {
    width: min(var(--container-max), calc(100% - 20px));
  }

  .header-inner {
    padding-inline: 10px;
    gap: 6px;
  }

  .logo-main {
    font-size: 19px;
  }

  .logo-sub {
    font-size: 7.5px;
    letter-spacing: 0.18em;
  }

  .header-actions {
    gap: 6px;
  }

  .header-cta-btn {
    padding: 7px 11px;
    font-size: 11.5px;
  }

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

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

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

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

  .hero-composition {
    padding: 18px 14px;
  }

  .manuscript-preview-card {
    padding: 14px;
  }

  /* Single Column Metrics on very small phones */
  .testimonials-metrics-ribbon {
    grid-template-columns: 1fr;
  }

  .metric-ribbon-item {
    border-right: none !important;
    border-bottom: 1px solid var(--color-border-subtle);
    padding: 16px 12px;
  }

  .metric-ribbon-item:last-child {
    border-bottom: none;
  }
}

/* ==========================================================================
   5. EXTRA SMALL PHONES (Max 360px)
   ========================================================================== */
@media (max-width: 360px) {
  .logo-main {
    font-size: 17px;
  }

  .header-cta-btn {
    padding: 6px 8px;
    font-size: 11px;
  }

  .header-whatsapp-btn {
    width: 34px;
    height: 34px;
  }
}