/* ==========================================================================
   Mobile-Specific Styles and Responsive Design
   ========================================================================== */

/* ==========================================================================
   Safe Area Insets for Notched Devices (iPhone X and later)
   ========================================================================== */

/* Apply safe area insets to body */
body {
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Header safe area (top notch) */
header {
  padding-top: max(1rem, env(safe-area-inset-top));
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
}

/* Mobile bottom navigation safe area (bottom home indicator) */
.mobile-bottom-nav {
  padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Ensure main content respects safe areas */
main {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Footer safe area */
footer {
  padding-bottom: max(2rem, env(safe-area-inset-bottom));
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* ==========================================================================
   Mobile Bottom Navigation
   ========================================================================== */

.mobile-bottom-nav {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-lg);
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0;
}

/* Hide mobile nav on desktop */
@media (min-width: 1024px) {
  .mobile-bottom-nav {
    display: none !important;
  }
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  min-height: 60px;
}

.mobile-nav-item.active {
  color: var(--accent-color);
  transform: translateY(-4px);
  font-weight: 600;
}

.mobile-nav-item.active .material-icons-outlined {
  color: var(--accent-color);
  transform: scale(1.2);
}

/* Home link in mobile nav for subpages */
body:not(.home-page) .mobile-nav-item[href*="index.html"] {
  color: var(--accent-color);
}

body:not(.home-page) .mobile-nav-item[href*="index.html"] .material-icons-outlined {
  color: var(--accent-color);
}

/* Ensure consistent mobile nav text color for active states */
.mobile-nav-item.active span:last-child {
  color: var(--accent-color);
  font-weight: 600;
}

.mobile-nav-item span:last-child {
  margin-top: 4px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Mobile navigation hover effects */
.mobile-nav-item:hover {
  background: rgba(217, 119, 6, 0.1);
  transform: translateY(-2px);
}

.mobile-nav-item:active {
  transform: translateY(0) scale(0.95);
}

/* Mobile navigation grid layout */
.mobile-nav-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  width: 100%;
  position: relative;
}

/* Dark mode support for mobile navigation */
:root.dark .mobile-bottom-nav {
  background: rgba(20, 20, 20, 0.95);
  border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   Mobile-Specific Layout Adjustments
   ========================================================================== */

@media (max-width: 768px) {
  /* Header adjustments */
  header {
    padding: 1rem 1.5rem;
    min-height: 80px;
    /* Allow wrapping for logo text on small screens */
    white-space: normal;
  }
  
  /* Logo container adjustments for small screens */
  header .flex.items-center.gap-2.sm\\:gap-3.flex-shrink-0 {
    align-items: center;
    gap: 0.5rem;
  }
  
  /* Logo text responsive styling */
  .logo-text,
  .header-logo-text {
    font-size: 1.25rem;
    line-height: 1.2;
    /* Allow line breaks - override whitespace-nowrap */
    white-space: normal !important;
    /* Make text stack vertically */
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  
  /* Individual logo line styling */
  .logo-first-line,
  .logo-second-line {
    display: block;
    line-height: 1.1;
  }
  
  .logo-first-line {
    margin-bottom: 0.125rem;
  }
  
  /* Hero section mobile optimization */
  .hero-background {
    min-height: 400px;
    padding: 2rem 1rem;
  }
  
  .hero-background::after {
    animation-duration: 6s;
  }
  
  /* Floating elements mobile adjustments */
  .floating-element {
    animation-duration: 8s;
    opacity: 0.3;
  }
  
  /* Card grid mobile layout */
  .card-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .card,
  .project-card {
    transform: translateZ(0);
    padding: 1.5rem;
  }
  
  /* Typography scaling for mobile */
  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
    line-height: 1.1;
  }
  
  .hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.25rem);
  }
  
  .hero-description {
    font-size: clamp(0.875rem, 3vw, 1rem);
  }
  
  /* Button adjustments for mobile */
  .btn-primary {
    padding: 0.875rem 1.5rem;
    font-size: 0.95rem;
    /* Removed min-width to allow contact buttons to shrink on very small screens */
  }
  
  /* Hide desktop-only elements */
  .desktop-only {
    display: none !important;
  }
  
  /* Mobile-specific spacing */
  .section-padding {
    padding: 3rem 1rem;
  }
  
  /* Enhanced touch targets */
  .mobile-nav-item,
  .btn-primary,
  .card {
    min-height: 44px;
  }
}

@media (max-width: 480px) {
  /* Extra small mobile adjustments */
  header {
    padding: 0.75rem 1rem;
  }
  
  /* Compact logo text for very small screens */
  .logo-text,
  .header-logo-text {
    font-size: 1rem;
    line-height: 1.1;
  }
  
  .logo-first-line {
    margin-bottom: 0.0625rem;
    font-size: 0.95rem;
  }
  
  .logo-second-line {
    font-size: 0.9rem;
  }
  
  .hero-background {
    min-height: 350px;
    padding: 1.5rem 0.75rem;
  }
  
  .card,
  .project-card {
    padding: 1.25rem;
    margin: 0 0.5rem;
  }
  
  .btn-primary {
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
    /* Removed min-width to allow contact buttons to shrink on very small screens */
  }
  
  .mobile-bottom-nav {
    padding: 0.25rem 0;
  }
  
  .mobile-nav-item {
    padding: 6px 8px;
    min-height: 55px;
  }
  
  .mobile-nav-item span:last-child {
    font-size: 10px;
  }
}

/* ==========================================================================
   Tablet-Specific Adjustments
   ========================================================================== */

@media (min-width: 769px) and (max-width: 1023px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  
  .hero-background {
    min-height: 500px;
  }
  
  .mobile-bottom-nav {
    display: none;
  }
}

/* ==========================================================================
   Mobile Performance Optimizations
   ========================================================================== */

@media (max-width: 768px) {
  /* Reduce blur effects on mobile for better performance */
  .card,
  .project-card {
    backdrop-filter: blur(10px) saturate(150%);
  }
  
  header {
    backdrop-filter: blur(15px) saturate(160%);
  }
  
  /* Simplify animations on mobile */
  .floating-element {
    will-change: transform;
    transform: translateZ(0);
  }
  
  /* Optimize shadow rendering */
  .card:hover,
  .project-card:hover {
    box-shadow: var(--shadow-lg);
  }
  
  /* Reduce motion for better battery life */
  .hero-background::after {
    animation-duration: 8s;
  }
}

/* ==========================================================================
   Touch Device Optimizations
   ========================================================================== */

@media (hover: none) and (pointer: coarse) {
  /* Remove hover effects on touch devices */
  .card:hover,
  .project-card:hover,
  .service-card:hover,
  .btn-primary:hover {
    transform: none;
    box-shadow: inherit;
  }
  
  /* Enhanced touch targets */
  .mobile-nav-item {
    min-height: 48px;
    min-width: 48px;
  }
  
  .btn-primary {
    min-height: 48px;
    padding: 0.875rem 1.5rem;
  }
  
  /* Remove complex animations on touch devices */
  .floating-element {
    animation: none;
    opacity: 0.2;
  }
  
  /* Simplify transitions */
  * {
    transition-duration: 0.2s;
  }
}

/* ==========================================================================
   Landscape Mobile Adjustments
   ========================================================================== */

@media (max-width: 768px) and (orientation: landscape) {
  .hero-background {
    min-height: 300px;
    padding: 1.5rem 1rem;
  }
  
  .mobile-bottom-nav {
    padding: 0.25rem 0;
  }
  
  .mobile-nav-item {
    min-height: 50px;
    padding: 4px 8px;
  }
  
  .mobile-nav-item span:last-child {
    font-size: 9px;
  }
}

/* ==========================================================================
   Portfolio Mobile Responsiveness
   ========================================================================== */

@media (max-width: 768px) {
  /* Portfolio grid mobile adjustments */
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
  }
  
  /* Portfolio filter buttons mobile layout */
  .portfolio-filter-btn {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    min-width: auto;
  }
  
  /* Portfolio card mobile optimizations */
  .portfolio-card {
    margin-bottom: 1rem;
  }
  
  .portfolio-content {
    padding: 1.25rem;
  }
  
  .portfolio-title {
    font-size: 1.25rem;
    line-height: 1.3;
  }
  
  .portfolio-description {
    font-size: 0.9rem;
    line-height: 1.5;
  }
  
  .portfolio-links {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .portfolio-link {
    justify-content: center;
    padding: 0.75rem 1rem;
  }
  
  .meta-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
  }
  
  .meta-value {
    max-width: 100%;
    text-align: left;
  }
  
  /* Filter buttons mobile scroll */
  .flex.flex-wrap.justify-center.gap-2.sm\\:gap-4.mt-12 {
    overflow-x: auto;
    justify-content: flex-start;
    padding: 0 1rem;
    gap: 1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .flex.flex-wrap.justify-center.gap-2.sm\\:gap-4.mt-12::-webkit-scrollbar {
    display: none;
  }
  
  .portfolio-filter-btn {
    flex-shrink: 0;
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  /* Extra small screens */
  .portfolio-content {
    padding: 1rem;
  }
  
  .portfolio-title {
    font-size: 1.1rem;
  }
  
  .portfolio-subtitle {
    font-size: 0.8rem;
  }
  
  .portfolio-description {
    font-size: 0.85rem;
  }
  
  .portfolio-tags .tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
  }
}

/* ==========================================================================
   End Portfolio Mobile Responsiveness
   ========================================================================== */

/* ==========================================================================
   Contact Page Mobile Optimizations
   ========================================================================== */

@media (max-width: 768px) {
  .consultation-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .consultation-card {
    padding: 1rem;
    transform: none !important;
  }
  
  .consultation-card:hover {
    transform: translateY(-4px) !important;
  }
  
  .contact-form {
    padding: 1.5rem;
    transform: none !important;
  }
  
  .contact-form:hover {
    transform: none !important;
  }
  
  .contact-info-card {
    padding: 0.75rem;
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .contact-info-card > div:first-child {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
  }

  .contact-info-card .material-icons {
    font-size: 2rem;
  }
  
  .hero-section {
    padding: 2rem 1rem;
  }
  
  .hero-section h1 {
    font-size: 2rem;
    line-height: 1.2;
  }
  
  .hero-section p {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .consultation-card h3 {
    font-size: 1rem;
  }
  
  .consultation-card p {
    font-size: 0.875rem;
  }
  
  .consultation-card ul {
    font-size: 0.8rem;
  }
  
  .contact-form h2 {
    font-size: 1.25rem;
  }
  
  .contact-form .grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info-highlight {
    padding: 1rem;
  }
  
  .hero-section .flex {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero-section .material-icons {
    font-size: 1.25rem;
  }
}

/* Enhanced touch targets for mobile */
@media (hover: none) and (pointer: coarse) {
  .contact-form input,
  .contact-form textarea,
  .contact-form select,
  .contact-form button {
    min-height: 48px;
    font-size: 16px; /* Prevents zoom on iOS */
  }

  .consultation-card {
    padding: 1.5rem;
  }

  .contact-info-card {
    padding: 1rem;
    min-height: 48px;
  }

  .mobile-nav-item {
    min-height: 60px;
    min-width: 60px;
  }
}

/* ==========================================================================
   iOS-Specific Form Input Fixes
   ========================================================================== */

/* Prevent iOS zoom on input focus and fix appearance issues */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="number"],
input[type="password"],
textarea,
select {
  /* Prevent iOS zoom on focus */
  font-size: 16px !important;

  /* Remove iOS default styling */
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;

  /* Fix border-radius rendering on iOS */
  -webkit-border-radius: 0.5rem;
  border-radius: 0.5rem;

  /* Improve tap highlight */
  -webkit-tap-highlight-color: transparent;

  /* Prevent iOS from adding shadow */
  -webkit-box-shadow: none;
  box-shadow: none;
}

/* Fix select dropdown arrow on iOS */
select {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

/* Fix iOS button appearance */
button,
input[type="submit"],
input[type="button"],
.btn-primary,
.btn-secondary {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  -webkit-border-radius: 0.5rem;
  border-radius: 0.5rem;
  -webkit-tap-highlight-color: transparent;
}

/* iOS-specific textarea fixes */
textarea {
  /* Fix resize handle on iOS */
  resize: vertical;
  -webkit-overflow-scrolling: touch;
}

/* Fix iOS input placeholder */
input::placeholder,
textarea::placeholder {
  opacity: 0.6;
  -webkit-text-fill-color: currentColor;
}

/* Prevent iOS from adding blue highlight on tap */
* {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

/* Allow text selection where needed */
input,
textarea,
[contenteditable="true"] {
  -webkit-touch-callout: default;
  -webkit-user-select: text;
  user-select: text;
}

/* Improve readability on small screens */
@media (max-width: 375px) {
  .hero-section h1 {
    font-size: 1.75rem;
  }
  
  .contact-form {
    padding: 1rem;
  }
  
  .consultation-card {
    padding: 0.75rem;
  }
  
  .contact-info-card {
    padding: 0.5rem;
  }
}

/* ==========================================================================
   Featured AI Solutions & About Section Mobile Adjustments
   ========================================================================== */

/* Hide illustrations in Featured AI Solutions cards on smaller than desktop screens */
@media (max-width: 1023px) {
  /* Target the illustration containers in Featured AI Solutions section */
  .section-projects .project-card .aspect-video {
    display: none;
  }
  
  /* Adjust project card layout when illustration is hidden */
  .section-projects .project-card {
    padding-top: 1.5rem;
  }
  
  /* Ensure proper spacing for the content when illustration is hidden */
  .section-projects .project-card .space-y-4 {
    margin-top: 0;
  }
  
  /* Remove the margin-bottom that was added for the illustration */
  .section-projects .project-card .relative.z-10.p-6 {
    padding-top: 1.5rem;
  }
}

/* Fix text alignment in project card tags with material icons */
.section-projects .project-card .space-y-4 .flex.items-center.gap-2 span {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  gap: 0.25rem;
}

.section-projects .project-card .space-y-4 .flex.items-center.gap-2 span .material-icons-outlined {
  vertical-align: middle;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  font-size: 1rem;
  height: 1rem;
  width: 1rem;
}

/* Enhanced fix for material icons in gradient tags */
.section-projects .project-card .space-y-4 .flex.items-center.gap-2 span.bg-gradient-to-r {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  line-height: 1.2;
}

.section-projects .project-card .space-y-4 .flex.items-center.gap-2 span.bg-gradient-to-r .material-icons-outlined {
  vertical-align: middle;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  height: 1rem;
  width: 1rem;
  margin-right: 0.25rem;
}

/* Additional responsive improvements for Featured AI Solutions section */
@media (max-width: 1023px) {
  /* Ensure proper spacing and alignment on smaller screens */
  .section-projects .project-card {
    padding: 1rem;
  }
  
  .section-projects .project-card .space-y-4 > * + * {
    margin-top: 0.75rem;
  }
  
  .section-projects .project-card .space-y-4 .flex.items-center.gap-2 {
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  
  .section-projects .project-card .space-y-4 .flex.items-center.gap-2 span {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
  }
}

/* Position the "More About Dr. Wernsdorfer" button underneath the image */
.section-about a[href="en/about.html"] {
  /* Button is now positioned in HTML under the image - just ensure proper styling */
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Responsive adjustments for button under image */
@media (max-width: 1023px) {
  .section-about a[href="en/about.html"] {
    /* Maintain centering on smaller screens */
    width: fit-content;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .section-about a[href="en/about.html"] {
    /* Slightly smaller on mobile */
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
}