/* ==========================================================================
   RESPONSIVE LAYOUT & MOBILE ADAPTATIONS
   ========================================================================== */

/* 1. Screens narrower than 900px (Tablets & Mobile) */
@media (max-width: 899px) {
  /* Hero Single Column Flex Layout */
  .hero-grid {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    align-items: center;
  }

  /* Reserved block ABOVE name & intro text, centered with ample reserved height */
  .hero-hanging-stage {
    order: -1;
    position: relative;
    width: 100%;
    max-width: 100%;
    min-height: 480px;
    height: 490px;
    margin: 0 auto 1.5rem auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow: visible;
  }

  /* Hanging card scaled with clamp() */
  .hanging-card {
    position: absolute;
    top: 0;
    left: 50%;
    width: clamp(200px, 56vw, 260px);
    max-width: 100%;
    transform-origin: top center;
  }

  .hero-content {
    width: 100%;
    position: relative;
    z-index: 2;
    margin-top: 0;
  }

  /* Fast, responsive scroll-reveal animations on mobile (no 400ms delay) */
  .reveal-on-scroll {
    transition: opacity 0.32s ease-out, transform 0.32s ease-out;
  }

  .stagger-1, .stagger-2, .stagger-3, .stagger-4 {
    transition-delay: 0s;
  }

  /* Stacked Project Cards with small peek offsets (72px, 86px, 100px, 114px) */
  .projects-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
  }

  .project-card {
    position: sticky;
    top: calc(72px + var(--card-index, 0) * 14px);
    max-width: 100%;
    margin-bottom: 2rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  .project-card-body {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .project-img-box {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }

  .project-content {
    padding: clamp(1.25rem, 4vw, 1.75rem);
  }

  .skills-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* 2. Mobile Devices (max-width: 768px) */
@media (max-width: 768px) {
  .site-header {
    width: 100%;
  }

  .nav-wrap {
    height: 64px;
  }

  .mobile-nav-toggle {
    display: inline-flex;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem clamp(1.25rem, 5vw, 2.5rem);
    gap: 0.75rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-smooth), opacity var(--transition-smooth), visibility var(--transition-smooth);
    z-index: 99;
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
  }

  .nav-resume-item {
    width: 100%;
    margin-left: 0;
    padding-top: 0.5rem;
  }

  .nav-resume-btn {
    width: 100%;
    min-height: 44px;
    justify-content: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 44px;
  }

  .about-resume-box {
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
  }

  .about-resume-actions {
    width: 100%;
    flex-direction: column;
    gap: 0.65rem;
  }

  .about-resume-actions .btn {
    width: 100%;
    min-height: 44px;
  }

  .contact-buttons {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }

  .contact-buttons .btn {
    width: 100%;
    min-height: 44px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
  }
}

/* 3. Small Mobile Screens (max-width: 480px) */
@media (max-width: 480px) {
  .hero-name {
    font-size: clamp(2.2rem, 9.5vw, 2.75rem);
    word-break: break-word;
  }

  .hero-headline {
    font-size: 1.15rem;
  }

  .hero-subtitle {
    font-size: 0.98rem;
  }

  /* Reserved block for phones with ~360px card height */
  .hero-hanging-stage {
    min-height: 410px;
    height: 420px;
    margin-bottom: 1.25rem;
  }

  .hanging-card {
    width: clamp(200px, 64vw, 240px);
    padding: 0.65rem;
  }

  .hanging-card-name {
    font-size: 1.15rem;
  }

  .hanging-card-title {
    font-size: 0.82rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .skills-card {
    padding: 1.35rem;
  }

  .about-card {
    padding: 1.5rem;
  }

  .about-bio-flow p {
    font-size: 1.05rem;
  }

  .contact-card {
    padding: 1.75rem 1.25rem;
  }

  .contact-title {
    font-size: 1.75rem;
  }

  .contact-text {
    font-size: 1.05rem;
  }

  .browser-url {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    max-width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

/* 4. Extra Small Screens (max-width: 359px) */
@media (max-width: 359px) {
  .container {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .hero-name {
    font-size: 1.95rem;
  }

  /* Reserved block for ultra-small screens */
  .hero-hanging-stage {
    min-height: 390px;
    height: 400px;
    margin-bottom: 1rem;
  }

  .hanging-card {
    width: 200px;
    padding: 0.55rem;
  }

  .hanging-card-name {
    font-size: 1.05rem;
  }

  .hanging-card-title {
    font-size: 0.78rem;
  }

  .browser-url {
    max-width: 130px;
  }

  .browser-chrome {
    padding: 0.5rem 0.75rem;
    gap: 0.5rem;
  }

  .skills-tags {
    gap: 0.45rem;
  }

  .skill-tag {
    font-size: 0.82rem;
    padding: 0.35rem 0.65rem;
  }
}