/* RESPONSIVE DESIGN FRAMEWORK - Suprabhat Technologies */

/* ====== CSS VARIABLES ===== */
:root {
  /* Breakpoints */
  --mobile-xs: 320px;
  --mobile-sm: 480px;
  --mobile-md: 640px;
  --tablet-sm: 768px;
  --tablet-md: 1024px;
  --desktop-sm: 1200px;
  --desktop-md: 1400px;
  
  /* Mobile-specific spacing */
  --mobile-padding: 15px;
  --mobile-margin: 10px;
  
  /* Touch targets */
  --touch-target: 44px;
}

/* ====== MOBILE FIRST APPROACH ===== */
/* Base styles for mobile devices */

/* ====== MOBILE LANDSCAPE (480px+) ===== */
@media (min-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .stat-row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .service-teasers {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ====== TABLET PORTRAIT (768px+) ===== */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
    gap: 20px;
  }
  
  .mobile-menu-toggle {
    display: none;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .stat-row {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .service-teasers {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .featured-services .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .blog-slider {
    padding: 0 40px;
  }
  
  .blog-slide-content {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

/* ====== TABLET LANDSCAPE & DESKTOP SMALL (1024px+) ===== */
@media (min-width: 1024px) {
  .container {
    padding: 0 20px;
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
  
  .nav-links {
    gap: 30px;
  }
  
  .featured-services .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .blog-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
  
  .pricing-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

/* ====== DESKTOP MEDIUM (1200px+) ===== */
@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
    margin: 0 auto;
  }
  
  .hero-title {
    font-size: 4rem;
  }
}

/* ====== MOBILE SPECIFIC STYLES ===== */
@media (max-width: 767px) {
  /* Mobile Navigation */
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 18, 0.95);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 60px 20px 20px;
    z-index: 1000;
    height: 100vh;
    overflow-y: auto;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
    background: var(--neon-blue);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    color: white;
    font-size: 20px;
    transition: all 0.3s ease;
  }
  
  .mobile-menu-toggle:hover {
    background: var(--neon-green);
    transform: scale(1.1);
  }
  
  /* Hero Section Mobile */
  .hero {
    padding: 40px var(--mobile-padding);
    min-height: 60vh;
  }
  
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 30px;
  }
  
  .hero-title {
    font-size: 2rem;
    line-height: 1.2;
  }
  
  .hero-desc {
    font-size: 1rem;
    margin-bottom: 30px;
  }
  
  .hero-btns {
    flex-direction: column;
    gap: 15px;
    align-items: center;
  }
  
  .btn-primary, .btn-outline {
    width: 200px;
    text-align: center;
    padding: 15px 20px;
  }
  
  /* Stats Mobile */
  .stat-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 20px var(--mobile-padding);
  }
  
  .stat-card {
    padding: 20px 15px;
    min-height: 120px;
  }
  
  .stat-num {
    font-size: 2rem;
  }
  
  .stat-label {
    font-size: 0.8rem;
  }
  
  /* Service Teasers Mobile */
  .service-teasers {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px var(--mobile-padding);
  }
  
  .teaser-card {
    padding: 25px 20px;
    min-height: 200px;
  }
  
  .teaser-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 15px;
  }
  
  .teaser-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
  }
  
  .teaser-desc {
    font-size: 0.9rem;
    line-height: 1.5;
  }
  
  /* Featured Services Mobile */
  .featured-services {
    padding: 40px var(--mobile-padding);
  }
  
  .featured-services .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .service-card {
    padding: 25px 20px;
  }
  
  .service-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
  }
  
  .service-card h3 {
    font-size: 1.3rem;
  }
  
  .service-card p {
    font-size: 0.9rem;
  }
  
  /* Blog Slider Mobile */
  .latest-blogs {
    padding: 40px var(--mobile-padding);
  }
  
  .blog-slider {
    padding: 0 var(--mobile-padding);
  }
  
  .blog-slide-content {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 30px 20px;
  }
  
  .blog-slide-content h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
  }
  
  .slider-controls {
    display: none;
  }
  
  /* Blog List Mobile */
  .blog-list .blog-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .blog-post {
    padding: 25px 20px;
  }
  
  .blog-post h3 {
    font-size: 1.3rem;
  }
  
  .blog-post p {
    font-size: 0.9rem;
  }
  
  /* Pricing Mobile */
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .pricing-card {
    padding: 30px 25px;
  }
  
  .pricing-card h3 {
    font-size: 1.5rem;
  }
  
  .pricing-card .price {
    font-size: 2rem;
  }
  
  /* Testimonials Mobile */
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .testimonial-card {
    padding: 25px 20px;
  }
  
  .testimonial-content {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .client-name {
    font-size: 1.1rem;
  }
  
  /* ISP Page Mobile */
  .isp-content {
    padding: 20px var(--mobile-padding);
  }
  
  .technology-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .tech-card {
    padding: 20px 15px;
  }
  
  .topology-container {
    padding: 20px var(--mobile-padding);
  }
  
  .topology-canvas {
    height: 300px;
  }
  
  .monitoring-dashboard {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  /* Contact Form Mobile */
  .contact-form {
    padding: 30px var(--mobile-padding);
  }
  
  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 15px;
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  /* Footer Mobile */
  .footer-content {
    padding: 30px var(--mobile-padding);
    text-align: center;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }
}

/* ====== TABLET SPECIFIC STYLES ===== */
@media (min-width: 768px) and (max-width: 1023px) {
  .hero {
    padding: 60px 40px;
  }
  
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  
  .stat-row {
    padding: 30px 40px;
  }
  
  .service-teasers {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    padding: 40px;
  }
  
  .featured-services .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .blog-slider {
    padding: 0 40px;
  }
  
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ====== ADMIN PANEL RESPONSIVE ===== */
@media (max-width: 767px) {
  .admin-header {
    flex-direction: column;
    gap: 15px;
    padding: 20px var(--mobile-padding);
  }
  
  .admin-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
  }
  
  .admin-container {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(0, 212, 255, 0.3);
    padding: 20px var(--mobile-padding);
  }
  
  .sidebar-menu {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
  }
  
  .sidebar-menu li {
    margin-bottom: 0;
  }
  
  .sidebar-menu a {
    padding: 10px 15px;
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
  }
  
  .main-content {
    padding: 20px var(--mobile-padding);
  }
  
  .page-header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  
  .form-container {
    padding: 20px var(--mobile-padding);
  }
  
  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 15px;
    font-size: 16px;
  }
  
  .form-actions {
    flex-direction: column;
    gap: 15px;
  }
  
  .form-actions button,
  .form-actions a {
    width: 100%;
    text-align: center;
  }
  
  .blogs-grid {
    grid-template-columns: 1fr;
  }
  
  .blog-card {
    padding: 20px var(--mobile-padding);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .stat-card {
    padding: 20px 15px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .admin-container {
    flex-direction: row;
  }
  
  .sidebar {
    width: 200px;
  }
  
  .sidebar-menu {
    flex-direction: column;
  }
  
  .sidebar-menu a {
    text-align: left;
    border: none;
  }
  
  .blogs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ====== ACCESSIBILITY & TOUCH ===== */
@media (hover: none) and (pointer: coarse) {
  .btn-primary,
  .btn-outline,
  .nav-link,
  .teaser-link {
    min-height: var(--touch-target);
    min-width: var(--touch-target);
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* ====== HIGH DPI DISPLAYS ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .hero-visual svg {
    width: 100%;
    height: auto;
  }
}

/* ====== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #e0e0f0;
    --text-secondary: #a0a0c0;
    --neon-blue: #00d4ff;
    --neon-green: #00ff9d;
  }
}

/* ====== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .globe-ring {
    animation: none;
  }
  
  .fade-in,
  .fade-in-2,
  .fade-in-3 {
    opacity: 1;
    transform: none;
  }
}

/* ====== PRINT STYLES ===== */
@media print {
  .nav-header,
  .hero-visual,
  .slider-controls,
  .btn-primary,
  .btn-outline,
  .sidebar {
    display: none !important;
  }
  
  .hero-inner {
    grid-template-columns: 1fr;
  }
  
  .service-card,
  .blog-post,
  .testimonial-card {
    break-inside: avoid;
    page-break-inside: avoid;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
}