/* ============================================================
   PORTFOLIO RESPONSIVE — Mobile-First Breakpoints
   ============================================================ */

/* ── MOBILE BASE (≤ 480px) ──────────────────────────────── */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .site-nav {
    padding: 12px 16px;
    gap: 16px;
    width: calc(100% - 32px);
  }

  .site-nav-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: rgba(238, 243, 247, 0.96);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-color: var(--color-border);
    padding-left: var(--space-md);
    padding-right: var(--space-md);
    padding-top: 0;
    padding-bottom: 0;
    z-index: 199;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-slightly-elevated);
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition:
      max-height var(--transition-slow),
      opacity var(--transition-base),
      transform var(--transition-base),
      padding var(--transition-slow);
  }

  .site-nav-links.open {
    max-height: 320px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
  }

  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .resume-button {
    display: none;
  }

  .hero {
    height: 100vh;
    padding: 60px 0 var(--space-2xl) 0;
  }

  .hero-title {
    font-size: clamp(40px, 12vw, 56px);
    letter-spacing: 2px;
  }

  .hero-subtitle {
    font-size: 9px;
    letter-spacing: 3px;
  }

  .hero-summary {
    font-size: var(--text-base);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .section-title {
    font-size: clamp(28px, 8vw, 36px);
  }

  .two-col,
  .two-col-wide {
    grid-template-columns: 1fr;
  }

  .project-card-featured {
    grid-template-columns: 1fr;
  }

  .project-card-featured .project-card-thumb {
    min-height: 200px;
    height: 200px;
  }

  .project-card-featured .project-card-body {
    padding: var(--space-lg);
  }

  .project-card-featured .project-card-title {
    font-size: 24px;
  }

  .profile-hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: var(--space-lg);
  }

  .profile-avatar {
    margin: 0 auto;
  }

  .profile-links {
    justify-content: center;
  }

  .metric-row {
    gap: var(--space-lg);
  }

  .metric-num {
    font-size: 32px;
  }

  .contact-cards {
    grid-template-columns: 1fr;
  }

  .project-detail-header {
    padding: var(--space-lg);
  }

  .project-detail-title {
    font-size: var(--text-2xl);
  }

  .project-detail-section {
    padding: var(--space-lg);
  }

  .resume-name {
    font-size: var(--text-3xl);
  }

  .resume-contact {
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
  }

  .filter-bar {
    justify-content: center;
  }

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

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

  .cta-section {
    padding: var(--space-xl);
  }

  .cta-title {
    font-size: var(--text-2xl);
  }

  .timeline {
    padding-left: 28px;
  }

  .timeline::before {
    left: 10px;
  }

  .timeline-item::before {
    left: -24px;
    width: 8px;
    height: 8px;
  }

  .footer-links {
    gap: 16px;
  }

  .section-nav {
    width: 100%;
  }

  .section-nav-item {
    flex: 1;
    text-align: center;
    padding: 7px 10px;
  }
}

/* ── TABLET (481px – 900px) ─────────────────────────────── */
@media (min-width: 481px) and (max-width: 900px) {
  .container {
    padding: 0 var(--space-md);
  }

  .site-nav {
    padding: 12px 16px;
  }

  .site-nav-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: rgba(238, 243, 247, 0.96);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-color: var(--color-border);
    padding-left: var(--space-md);
    padding-right: var(--space-md);
    padding-top: 0;
    padding-bottom: 0;
    z-index: 199;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-slightly-elevated);
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition:
      max-height var(--transition-slow),
      opacity var(--transition-base),
      transform var(--transition-base),
      padding var(--transition-slow);
  }

  .site-nav-links.open {
    max-height: 320px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
  }

  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .resume-button {
    display: none;
  }

  .theme-toggle {
    margin-left: 0;
  }

  .two-col,
  .two-col-wide {
    grid-template-columns: 1fr;
  }

  .project-card-featured {
    grid-template-columns: 1fr;
  }

  .project-card-featured .project-card-thumb {
    min-height: 220px;
  }

  .profile-hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: var(--space-lg);
  }

  .profile-avatar {
    margin: 0 auto;
  }

  .profile-links {
    justify-content: center;
  }

  .contact-cards {
    grid-template-columns: 1fr;
  }

  .skill-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .hero {
    height: 100vh;
  }
}

/* ── DESKTOP (901px – 1200px) ───────────────────────────── */
@media (min-width: 901px) and (max-width: 1200px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .site-nav {
    padding: 14px 24px;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .skill-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── LARGE DESKTOP (> 1200px) ───────────────────────────── */
@media (min-width: 1201px) {
  .container {
    padding: 0 var(--space-xl);
  }

  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .skill-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ── MOBILE NAV DARK THEME OVERRIDE ─────────────────────── */
@media (max-width: 900px) {
  [data-theme="dark"] .site-nav-links {
    background: rgba(10, 19, 26, 0.96);
  }
}

/* ── NAV VISIBILITY HELPERS ──────────────────────────────── */
@media (min-width: 901px) {
  .mobile-menu-toggle {
    display: none !important;
  }

  .site-nav-links {
    display: flex !important;
  }
}

/* ── PRINT STYLES ───────────────────────────────────────── */
@media print {
  .site-nav,
  .site-footer,
  .theme-toggle,
  .mobile-menu-toggle,
  .hero-terminal-canvas,
  .hero-bg,
  .no-print {
    display: none !important;
  }

  body {
    background: #fff !important;
    color: #111 !important;
  }

  body::before {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 40px 0;
  }

  .container {
    max-width: 100%;
    padding: 0 20px;
  }

  .project-card,
  .rec-card,
  .skill-card,
  .profile-hero,
  .project-detail-header,
  .project-detail-section,
  .cta-section,
  .timeline-item {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .section {
    padding: 30px 0;
  }

  a {
    text-decoration: none;
    color: #111 !important;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 10px;
    color: #666;
  }
}