/* ===================================================================
   Responsive Improvements for Chatari Homepage
   Professional and Modern Responsive Design
   =================================================================== */

/* ===== Global Responsive Variables ===== */
:root {
  /* Breakpoints */
  --breakpoint-xs: 375px;
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* Container max-widths */
  --container-xs: 100%;
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  
  /* Responsive spacing */
  --spacing-mobile: 1rem;
  --spacing-tablet: 1.5rem;
  --spacing-desktop: 2rem;
  
  /* Responsive font sizes */
  --text-responsive-xs: clamp(0.75rem, 2vw, 0.875rem);
  --text-responsive-sm: clamp(0.875rem, 2.5vw, 1rem);
  --text-responsive-base: clamp(1rem, 3vw, 1.125rem);
  --text-responsive-lg: clamp(1.125rem, 3.5vw, 1.25rem);
  --text-responsive-xl: clamp(1.25rem, 4vw, 1.5rem);
  --text-responsive-2xl: clamp(1.5rem, 5vw, 2rem);
  --text-responsive-3xl: clamp(1.875rem, 6vw, 2.5rem);
  --text-responsive-4xl: clamp(2.25rem, 7vw, 3rem);
  --text-responsive-5xl: clamp(2.5rem, 8vw, 4rem);
  --text-responsive-6xl: clamp(3rem, 9vw, 5rem);
}

/* ===== Base Responsive Improvements ===== */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  overflow-x: hidden;
}

/* ===== Container System ===== */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-mobile);
  padding-right: var(--spacing-mobile);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
    padding-left: var(--spacing-tablet);
    padding-right: var(--spacing-tablet);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
    padding-left: var(--spacing-desktop);
    padding-right: var(--spacing-desktop);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: var(--container-2xl);
  }
}

/* ===== Navigation Responsive ===== */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary-400);
  margin: 3px 0;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 1024px) {
  .nav-container {
    padding: 0 20px;
  }
  
  .nav-hamburger {
    display: flex;
    margin-left: auto;
    order: 2;
  }
  
  .nav-menu {
    display: flex !important;
    position: fixed;
    top: 68px;
    right: -100%;
    width: 100%;
    max-width: 100vw;
    height: calc(100vh - 68px);
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 40px 20px;
    gap: 24px;
    transition: right 0.3s ease;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 999;
    border-left: 1px solid rgba(168, 85, 247, 0.2);
  }
  
  .nav-menu.active {
    right: 0;
    display: flex !important;
  }
  
  .nav-menu li {
    width: 100%;
    text-align: center;
  }
  
  .nav-menu a {
    display: block;
    padding: 12px 20px;
    font-size: 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
  }
  
  .nav-menu a:hover {
    background: rgba(168, 85, 247, 0.1);
  }
  
  .nav-actions {
    width: 100%;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .nav-container {
    height: 60px;
    padding: 0 16px;
    justify-content: space-between;
  }
  
  .nav-logo {
    font-size: 1.25rem;
    flex-shrink: 0;
  }
  
  .nav-hamburger {
    margin-left: 10px;
  }
  
  .nav-menu {
    display: flex !important;
    top: 60px;
    height: calc(100vh - 60px);
    right: -100%;
    width: 100%;
  }
  
  .nav-menu.active {
    right: 0;
    display: flex !important;
  }
}

/* ===== Hero Section Responsive ===== */
.hero {
  padding: 120px 20px 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  font-size: var(--text-responsive-6xl);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: var(--text-responsive-xl);
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    padding: 100px 16px 60px;
    min-height: auto;
  }
  
  .hero h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  
  .hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.25rem);
    padding: 0 1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
}

/* ===== Grid Layouts Responsive ===== */
.grid {
  display: grid;
  gap: 2rem;
}

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

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

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

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Responsive grid */
@media (max-width: 1280px) {
  .grid-cols-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid {
    gap: 1.5rem;
  }
}

@media (max-width: 640px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .grid {
    gap: 1rem;
  }
}

/* ===== Cards Responsive ===== */
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .card {
    padding: 1.5rem;
    border-radius: 12px;
  }
}

@media (max-width: 480px) {
  .card {
    padding: 1.25rem;
  }
}

/* ===== Feature Cards Responsive ===== */
.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}

.feature-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(147, 51, 234, 0.2));
  border-radius: 16px;
  font-size: 28px;
}

.feature-title {
  font-size: var(--text-responsive-xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-description {
  font-size: var(--text-responsive-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 640px) {
  .feature-icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
  }
}

/* ===== Pricing Cards Responsive ===== */
.pricing-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  position: relative;
  padding: 2rem;
  background: var(--glass-bg);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.pricing-card.featured {
  border-color: var(--primary-500);
  transform: scale(1.05);
}

@media (max-width: 1024px) {
  .pricing-container {
    grid-template-columns: 1fr;
    max-width: 500px;
  }
  
  .pricing-card.featured {
    transform: scale(1);
  }
}

@media (max-width: 640px) {
  .pricing-container {
    gap: 1.5rem;
    padding: 0 1rem;
  }
  
  .pricing-card {
    padding: 1.5rem;
  }
}

/* ===== Stats Section Responsive ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-number {
  font-size: var(--text-responsive-4xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-400), var(--accent-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: var(--text-responsive-sm);
  color: var(--text-secondary);
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .stat-number {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }
}

/* ===== Comparison Table Responsive ===== */
.comparison-table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 -20px;
  padding: 0 20px;
}

.comparison-table {
  min-width: 700px;
  width: 100%;
}

@media (max-width: 768px) {
  .comparison-table-wrapper {
    margin: 0 -16px;
    padding: 0 16px;
  }
  
  .comparison-table {
    font-size: 14px;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: 12px 8px;
  }
  
  /* Add scroll indicator */
  .comparison-table-wrapper::after {
    content: '→ Scroll';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(168, 85, 247, 0.9);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    pointer-events: none;
    opacity: 1;
    transition: opacity 0.3s ease;
  }
  
  .comparison-table-wrapper:hover::after {
    opacity: 0;
  }
}

/* ===== Footer Responsive ===== */
.footer {
  padding: 4rem 2rem 2rem;
  background: rgba(10, 10, 10, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links h4 {
  font-size: var(--text-responsive-base);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-responsive-sm);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--primary-400);
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 1024px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .footer {
    padding: 3rem 1rem 1.5rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== Section Spacing Responsive ===== */
.section {
  padding: 100px 24px;
  position: relative;
}

@media (max-width: 1024px) {
  .section {
    padding: 80px 20px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 16px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 48px 16px;
  }
}

/* ===== Typography Responsive ===== */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

h1 {
  font-size: var(--text-responsive-6xl);
}

h2 {
  font-size: var(--text-responsive-4xl);
}

h3 {
  font-size: var(--text-responsive-2xl);
}

h4 {
  font-size: var(--text-responsive-xl);
}

p {
  line-height: 1.6;
  font-size: var(--text-responsive-base);
}

/* ===== Button Responsive ===== */
.btn {
  font-size: var(--text-responsive-sm);
  padding: 12px 24px;
  white-space: nowrap;
  min-height: 44px; /* Touch target size */
}

.btn-lg {
  font-size: var(--text-responsive-base);
  padding: 16px 32px;
  min-height: 52px;
}

.btn-sm {
  font-size: var(--text-responsive-xs);
  padding: 8px 16px;
  min-height: 36px;
}

@media (max-width: 640px) {
  .btn {
    padding: 12px 20px;
  }
  
  .btn-lg {
    padding: 14px 24px;
  }
}

/* ===== Forms Responsive ===== */
input,
textarea,
select {
  width: 100%;
  font-size: 16px; /* Prevents zoom on iOS */
  min-height: 44px;
}

@media (max-width: 640px) {
  input,
  textarea,
  select {
    font-size: 16px !important; /* Force 16px to prevent zoom */
  }
}

/* ===== Utility Classes ===== */
.hide-mobile {
  display: block;
}

.show-mobile {
  display: none;
}

@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
  
  .show-mobile {
    display: block !important;
  }
}

/* ===== Horizontal Scroll Fix ===== */
* {
  max-width: 100%;
}

img,
video,
iframe {
  max-width: 100%;
  height: auto;
}

pre,
code {
  overflow-x: auto;
  word-wrap: break-word;
}

/* ===== Floating Elements Responsive ===== */
.gradient-orb {
  width: clamp(200px, 40vw, 600px);
  height: clamp(200px, 40vw, 600px);
}

@media (max-width: 768px) {
  .gradient-orb {
    width: clamp(150px, 35vw, 300px);
    height: clamp(150px, 35vw, 300px);
  }
}

/* ===== Touch Targets ===== */
a,
button,
[role="button"],
input,
textarea,
select {
  min-height: 44px;
  min-width: 44px;
}

/* ===== Animations Performance ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== Model Cards and Access Cards Mobile Fixes ===== */
@media (max-width: 768px) {
  .models-showcase {
    gap: 12px;
    padding: 0 16px;
    margin-top: 30px !important;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 100%;
  }
  
  .model-card {
    flex: 0 1 calc(50% - 6px);
    min-width: 150px;
    max-width: 200px;
    padding: 12px 16px !important;
    margin: 0;
  }
  
  .model-icon {
    width: 36px !important;
    height: 36px !important;
    margin-bottom: 8px;
    flex-shrink: 0;
  }
  
  .model-info {
    flex: 1;
    min-width: 0;
  }
  
  .model-name {
    font-size: 14px !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .model-version {
    font-size: 11px !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .access-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px !important;
    padding: 0 16px;
    max-width: 100%;
  }
  
  .access-card {
    padding: 20px 16px !important;
    width: 100%;
    box-sizing: border-box;
  }
  
  .access-icon {
    font-size: 24px !important;
    margin-bottom: 12px !important;
  }
  
  .access-title {
    font-size: 16px !important;
  }
  
  .access-description {
    font-size: 12px !important;
  }
  
  .unique-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
    padding: 0 16px;
  }
  
  .unique-card {
    width: 100%;
    max-width: none !important;
  }
  
  .comparison-card {
    width: 100% !important;
    max-width: 100% !important;
    padding: 20px 16px !important;
    margin: 0 !important;
    box-sizing: border-box;
  }
  
  .step-card {
    width: 100% !important;
    padding: 24px 20px !important;
  }
}

@media (max-width: 480px) {
  .models-showcase {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  
  .model-card {
    flex: 1 1 100%;
    width: 100%;
    max-width: 280px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  
  .access-grid {
    grid-template-columns: 1fr !important;
  }
  
  .access-card {
    max-width: 280px;
    margin: 0 auto;
  }
}

/* ===== Navigation Actions Mobile Fix ===== */
@media (max-width: 768px) {
  .nav-actions {
    display: none;
  }
  
  .nav-menu .nav-actions {
    display: flex;
    width: 100%;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav-menu .nav-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== Pricing Cards Mobile Fix ===== */
@media (max-width: 768px) {
  .pricing-cards {
    padding: 0 16px !important;
  }
  
  .pricing-card {
    width: 100% !important;
    max-width: 320px !important;
    margin: 0 auto !important;
  }
}

/* ===== General Container Width Fix ===== */
@media (max-width: 768px) {
  * {
    max-width: 100vw !important;
  }
  
  .section {
    overflow-x: hidden;
  }
  
  .container {
    overflow-x: hidden;
  }
  
  body {
    overflow-x: hidden;
    position: relative;
  }
}

/* ===== Print Styles ===== */
@media print {
  .nav,
  .footer,
  .gradient-orb,
  .btn,
  video,
  iframe {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .section {
    page-break-inside: avoid;
  }
}