/* ===================================
   RESPONSIVE DESIGN - MOBILE & TABLET
   =================================== */

/* Prevent horizontal scroll */
* {
  box-sizing: border-box;
}

html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

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

/* Tablet Styles (768px - 1024px) */
@media (max-width: 1024px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
    max-width: 100%;
  }
  
  /* Hero Section */
  .hero {
    padding-top: 6rem;
    padding-bottom: 4rem;
  }
  
  .hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    line-height: 1.1;
  }
  
  .hero .lead {
    font-size: 1.1rem;
    max-width: 90%;
  }
  
  /* Grid Layouts */
  .grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
  }
  
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
  }
}

/* Mobile Styles (max-width: 768px) */
@media (max-width: 768px) {
  /* Container & Spacing */
  .container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    max-width: 100%;
    overflow-x: hidden;
  }
  
  .section {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
  
  /* Header Mobile */
  .site-header {
    padding: 0.8rem 0;
    position: sticky;
    top: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    width: 100%;
  }
  
  .nav {
    position: relative;
    justify-content: space-between;
    align-items: center;
    display: flex;
    width: 100%;
  }
  
  .brand-name {
    font-size: 1rem;
    color: var(--text);
  }
  
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    position: relative;
  }
  
  /* Hide nav toggle on desktop */
  @media (min-width: 769px) {
    .nav-toggle {
      display: none;
    }
  }
  
  .nav-toggle-bar {
    width: 24px;
    height: 2px;
    background: var(--text);
    margin: 2px 0;
    transition: all 0.3s ease;
    border-radius: 1px;
  }
  
  /* Ensure nav toggle bars use theme colors */
  [data-theme="light"] .nav-toggle-bar {
    background: var(--text);
  }
  
  [data-theme="dark"] .nav-toggle-bar {
    background: var(--text);
  }
  
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .site-nav {
    position: fixed;
    top: 70px;
    left: 1rem;
    right: 1rem;
    background: var(--bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: var(--shadow);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    max-width: calc(100vw - 2rem);
  }
  
  .site-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    padding: 0.8rem 1rem;
    border-radius: 8px;
    text-align: center;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    display: block;
    text-decoration: none;
    color: var(--text);
  }
  
  .nav-link:hover,
  .nav-link:focus {
    background: var(--bg-elev);
    border-color: var(--border);
  }
  
  /* Hero Section Mobile */
  .hero {
    padding-top: 4rem;
    padding-bottom: 3rem;
    text-align: center;
  }
  
  .hero h1 {
    font-size: clamp(2rem, 8vw, 2.8rem);
    line-height: 1.2;
    margin-bottom: 1rem;
  }
  
  .hero .lead {
    font-size: 1rem;
    line-height: 1.6;
    max-width: 100%;
    margin-bottom: 2rem;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }
  
  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  /* About Section Mobile - Remove photo */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .about-photo {
    display: none; /* Hide photo in mobile to avoid narrow columns */
  }
  
  .about-text {
    max-width: 100%;
  }
  
  /* Skills Section Mobile */
  .skills-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .skill-card {
    padding: 1.5rem;
  }
  
  .skill-card h3 {
    font-size: 1.1rem;
  }
  
  /* Experience Section Mobile - Reorganize layout */
  #experience .card {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
  }
  
  #experience .card-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
  }
  
  #experience .meta-left h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
  }
  
  #experience .meta-right {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    width: 100%;
  }
  
  #experience .org-badge {
    font-size: 0.85rem;
  }
  
  #experience .meta-date {
    font-size: 0.85rem;
  }
  
  #experience .meta-left .meta-line {
    font-size: 0.9rem;
    margin-top: 0.5rem;
  }
  
  /* Education Section Mobile - Reorganize layout */
  #education .card {
    padding: 1.5rem;
  }
  
  #education .card-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
  }
  
  #education .meta-left h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
  }
  
  #education .meta-right {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    width: 100%;
  }
  
  #education .org-badge {
    font-size: 0.85rem;
  }
  
  #education .meta-date {
    font-size: 0.85rem;
  }
  
  #education .meta-left .meta-line {
    font-size: 0.9rem;
    margin-top: 0.5rem;
  }
  
  /* Projects Section Mobile - Enable swipe instead of buttons */
  .proj-carousel {
    position: relative;
    overflow: hidden;
  }
  
  .proj-arrow {
    display: none; /* Hide navigation arrows on mobile */
  }
  
  .proj-viewport {
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x mandatory;
  }
  
  .proj-viewport::-webkit-scrollbar {
    display: none;
  }
  
  .proj-track {
    display: flex;
    gap: 1rem;
    padding: 0 0.5rem;
    transform: none !important; /* Override JS transform */
  }
  
  .proj-track .tile {
    flex: 0 0 85%;
    max-width: 85%;
    scroll-snap-align: start;
  }
  
  /* Contact Section Mobile - Icons on same line as first text */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .contact-card {
    text-align: left;
  }
  
  .contact-list li {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
  }
  
  .contact-list li .contact-main {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .contact-list li i {
    flex-shrink: 0;
  }
  
  .contact-list li .kw-badge {
    margin-top: 0.25rem;
    align-self: flex-start;
  }
  
  /* Specific styling for time and WhatsApp badges */
  .time-badge,
  .pref-badge {
    font-size: 0.8rem;
    margin-top: 0.25rem;
  }
  
  /* Form Elements Mobile */
  .form-group {
    margin-bottom: 1.5rem;
  }
  
  .form-control {
    padding: 1rem;
    font-size: 16px; /* Prevents zoom on iOS */
    border-radius: 8px;
  }
  
  textarea.form-control {
    min-height: 120px;
    resize: vertical;
  }
  
  /* Footer Mobile */
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }
  
  .footer-social {
    justify-content: center;
  }
  
  /* Buttons Mobile */
  .btn {
    padding: 0.8rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .btn-small {
    padding: 0.6rem 1rem;
    font-size: 0.8rem;
  }
}

/* Small Mobile Styles (max-width: 480px) */
@media (max-width: 480px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
    max-width: 100%;
  }
  
  .hero h1 {
    font-size: clamp(1.8rem, 10vw, 2.2rem);
  }
  
  .hero .lead {
    font-size: 0.95rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .skill-card,
  #experience .card,
  #education .card,
  .project-card {
    padding: 1.2rem;
  }
  
  .nav-toggle {
    padding: 0.5rem;
  }
  
  .site-nav {
    gap: 0.3rem;
    left: 0.5rem;
    right: 0.5rem;
    max-width: calc(100vw - 1rem);
  }
  
  .nav-link {
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
  }
  
  /* Ensure projects carousel doesn't cause horizontal scroll */
  .proj-track .tile {
    flex: 0 0 90%;
    max-width: 90%;
  }
}

/* Landscape Mobile Styles */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    padding-top: 2rem;
    padding-bottom: 2rem;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .section {
    padding-top: 2rem;
    padding-bottom: 2rem;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  .btn:hover,
  .nav-link:hover,
  .skill-card:hover,
  .project-card:hover {
    transform: none;
  }
  
  .btn:active,
  .nav-link:active {
    transform: scale(0.98);
  }
  
  /* Increase touch targets */
  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  
  .btn {
    min-height: 44px;
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Optimize for retina displays */
  .hero h1,
  .section-title {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* Desktop fixes - Restore project arrows */
@media (min-width: 769px) {
  .proj-arrow {
    display: block !important;
  }
  
  .proj-track {
    transform: translateX(0) !important; /* Allow JS to control transform */
  }
  
  .proj-viewport {
    overflow: hidden !important;
    scroll-behavior: auto !important;
  }
  
  /* Restore desktop contact layout */
  .contact-list li {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 0.5rem !important;
  }
  
  .contact-list li .contact-main {
    display: contents !important;
  }
}

/* Language selector inline layout for mobile */
@media (max-width: 768px) {
  .site-nav {
    gap: 0.5rem;
  }
  
  .site-nav #lang-select,
  .site-nav #theme-toggle {
    display: inline-block;
    margin: 0.25rem;
  }

  /* Keep lang-menu hidden - we only use the select dropdown */
  .site-nav #lang-menu {
    display: none !important;
  }
  
  /* Create a flex container for language elements */
  .site-nav .lang-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 0.5rem 0;
  }
}

/* Additional mobile fixes */
@media (max-width: 768px) {
  /* Ensure all elements respect container width */
  * {
    max-width: 100%;
    word-wrap: break-word;
  }
  
  /* Fix any potential overflow issues */
  .kw-list {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .kw-badge {
    font-size: 0.8rem;
    padding: 0.3rem 0.6rem;
    white-space: nowrap;
  }
  
  /* Ensure cards don't overflow */
  .card,
  .tile {
    max-width: 100%;
    overflow: hidden;
  }
  
  /* Fix navigation menu positioning */
  .site-nav {
    max-height: calc(100vh - 100px);
    overflow-y: auto;
  }
  
  /* Ensure buttons and form elements are touch-friendly */
  .btn,
  .nav-link,
  button {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Fix any text overflow */
  h1, h2, h3, h4, h5, h6 {
    word-break: break-word;
    hyphens: auto;
  }
  
  /* Ensure images don't cause overflow */
  img {
    max-width: 100%;
    height: auto;
  }
}