/* ===== CSS CUSTOM PROPERTIES ===== */
        :root {
            /* Light Theme Colors */
            --primary-blue: #3B82F6;
            --primary-color: #25D366;
            --primary-dark: #128C7E;
            --accent-color: #FF6B35;
            --text-primary: #1F2937;
            --text-secondary: #6B7280;
            --text-light: #9CA3AF;
            --border-color: #E5E7EB;
            --mint-green: #10B981;

            --light-gray: #F8FAFC;
            --white: #FFFFFF;
            --text-primary: #1F2937;
            --text-secondary: #6B7280;
            --text-muted: #9CA3AF;
            --border-color: #E5E7EB;
            --shadow-light: rgba(0, 0, 0, 0.1);
            --shadow-medium: rgba(0, 0, 0, 0.15);
            --background-primary: #FFFFFF;
            --background-secondary: #F8FAFC;
            --background-accent: #F3F4F6;
            
            /* Typography */
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.25rem;
            --font-size-2xl: 1.5rem;
            --font-size-3xl: 1.875rem;
            --font-size-4xl: 2.25rem;
            --font-size-5xl: 3rem;
            
            /* Spacing */
            --space-1: 0.25rem;
            --space-2: 0.5rem;
            --space-3: 0.75rem;
            --space-4: 1rem;
            --space-5: 1.25rem;
            --space-6: 1.5rem;
            --space-8: 2rem;
            --space-10: 2.5rem;
            --space-12: 3rem;
            --space-16: 4rem;
            --space-20: 5rem;
            --space-24: 6rem;
            
            /* Border Radius */
            --radius-sm: 0.375rem;
            --radius-md: 0.5rem;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
            --radius-full: 9999px;
            
            /* Transitions */
            --transition-fast: 0.15s ease-in-out;
            --transition-normal: 0.3s ease-in-out;
            --transition-slow: 0.5s ease-in-out;
            
            /* Z-index */
            --z-dropdown: 1000;
            --z-sticky: 1020;
            --z-fixed: 1030;
            --z-modal: 1040;
            --z-popover: 1050;
            --z-tooltip: 1060;
        }

        /* Dark Theme Colors */
        [data-theme="dark"] {
            --primary-blue: #60A5FA;
            --mint-green: #34D399;
            --light-gray: #1F2937;
            --white: #111827;
            --text-primary: #F9FAFB;
            --text-secondary: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-color: #374151;
            --shadow-light: rgba(0, 0, 0, 0.3);
            --shadow-medium: rgba(0, 0, 0, 0.4);
            --background-primary: #111827;
            --background-secondary: #1F2937;
            --background-accent: #374151;
        }

        /* ===== RESET & BASE STYLES ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: var(--font-size-base);
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--background-primary);
            transition: background-color var(--transition-normal), color var(--transition-normal);
            overflow-x: hidden;
        }

         .chat-toggle {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 60px;
            height: 60px;
            background: var(--primary-color);
            border: none;
            border-radius: var(--radius-full);
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: var(--shadow-xl);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .chat-toggle:hover {
            transform: scale(1.1);
            background: var(--primary-dark);
            box-shadow: 0 25px 50px -12px rgba(83, 81, 81, 0.25);
        }

        .chat-toggle:focus {
            outline: 2px solid var(--secondary-color);
            outline-offset: 2px;
        }

        .chat-toggle.active {
            background: var(--accent-color);
            transform: rotate(45deg);
        }

        /* Notification badge */
        .chat-toggle::after {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 10px;
            height: 10px;
            background: var(--accent-color);
            border-radius: var(--radius-full);
            border: 2px solid white;
            animation: pulse 2s infinite;
        }

        .chat-toggle.opened::after {
            display: none;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.2); opacity: 0.7; }
        }

        /* ===== CHAT WINDOW ===== */
        .chat-window {
            position: fixed;
            bottom: -0px;
            right: 20px;
            width: 380px;
            height: 500px;
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-xl);
            transform: translateY(100%) scale(0.8);
            opacity: 0;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 999;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .chat-window.active {
            transform: translateY(0) scale(1);
            opacity: 1;
        }

        /* ===== CHAT HEADER ===== */
        .chat-header {
            background: var(--primary-color);
            color: white;
            padding: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .bot-avatar {
            width: 40px;
            height: 40px;
            background: white;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.25rem;
            font-weight: 600;
        }

        .bot-info h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }

        .bot-status {
            font-size: 0.75rem;
            opacity: 0.9;
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background: #4ADE80;
            border-radius: var(--radius-full);
            animation: blink 2s infinite;
        }

        @keyframes blink {
            0%, 50% { opacity: 1; }
            51%, 100% { opacity: 0.5; }
        }

        .chat-close {
            margin-left: auto;
            background: none;
            border: none;
            color: white;
            font-size: 1.25rem;
            cursor: pointer;
            padding: 0.25rem;
            border-radius: var(--radius-sm);
            transition: background 0.2s;
        }

        .chat-close:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== CHAT MESSAGES ===== */
        .chat-messages {
            flex: 1;
            padding: 1rem;
            overflow-y: auto;
            background: var(--bg-color);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .chat-messages::-webkit-scrollbar {
            width: 4px;
        }

        .chat-messages::-webkit-scrollbar-track {
            background: transparent;
        }

        .chat-messages::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: var(--radius-full);
        }

        /* Message bubbles */
        .message {
            display: flex;
            align-items: flex-end;
            gap: 0.5rem;
            animation: slideIn 0.3s ease-out;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .message.user {
            flex-direction: row-reverse;
        }

        .message-bubble {
            max-width: 80%;
            padding: 0.75rem 1rem;
            border-radius: 1.25rem;
            position: relative;
            word-wrap: break-word;
        }

        .message.bot .message-bubble {
            background: var(--white);
            color: var(--text-primary);
            border-bottom-left-radius: 0.25rem;
            box-shadow: var(--shadow-sm);
        }

        .message.user .message-bubble {
            background: var(--primary-color);
            color: white;
            border-bottom-right-radius: 0.25rem;
        }

        .message-time {
            font-size: 0.625rem;
            color: var(--text-light);
            margin-top: 0.25rem;
        }

        .message.user .message-time {
            color: rgba(255, 255, 255, 0.7);
        }

        /* Message content */
        .message-text {
            line-height: 1.4;
            margin-bottom: 0.25rem;
        }

        .message-image {
            margin: 0.5rem 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            max-width: 200px;
        }

        .message-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .message-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            padding: 0.5rem 0.75rem;
            border-radius: var(--radius-lg);
            text-decoration: none;
            color: inherit;
            margin-top: 0.5rem;
            transition: background 0.2s;
            font-weight: 500;
        }

        .message.bot .message-link {
            background: var(--secondary-color);
            color: white;
        }

        .message-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .message.bot .message-link:hover {
            background: #2563EB;
        }

        /* ===== TYPING INDICATOR ===== */
        .typing-indicator {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1rem;
            background: var(--white);
            border-radius: 1.25rem;
            border-bottom-left-radius: 0.25rem;
            box-shadow: var(--shadow-sm);
            max-width: 80px;
        }

        .typing-dots {
            display: flex;
            gap: 0.25rem;
        }

        .typing-dot {
            width: 6px;
            height: 6px;
            background: var(--text-light);
            border-radius: var(--radius-full);
            animation: typing 1.4s infinite ease-in-out;
        }

        .typing-dot:nth-child(1) { animation-delay: 0s; }
        .typing-dot:nth-child(2) { animation-delay: 0.2s; }
        .typing-dot:nth-child(3) { animation-delay: 0.4s; }

        @keyframes typing {
            0%, 60%, 100% {
                transform: translateY(0);
                opacity: 0.4;
            }
            30% {
                transform: translateY(-10px);
                opacity: 1;
            }
        }

        /* ===== QUICK REPLIES ===== */
        .quick-replies {
            padding: 1rem;
            background: var(--white);
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .quick-reply-btn {
            background: var(--bg-color);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 0.5rem 0.75rem;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 0.25rem;
            font-weight: 500;
        }

        .quick-reply-btn:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-1px);
        }

        .quick-reply-btn:focus {
            outline: 2px solid var(--secondary-color);
            outline-offset: 2px;
        }

        /* ===== RESPONSIVE DESIGN ===== */
        @media (max-width: 480px) {
            .chat-window {
                bottom: 90px;
                right: 10px;
                left: 10px;
                width: auto;
                height: 70vh;
                max-height: 500px;
            }

            .chat-toggle {
                bottom: 15px;
                right: 15px;
                width: 55px;
                height: 55px;
                font-size: 1.25rem;
            }

            .demo-content h1 {
                font-size: 2rem;
            }

            .demo-content p {
                font-size: 1rem;
                padding: 0 1rem;
            }

            .message-bubble {
                max-width: 85%;
            }

            .quick-reply-btn {
                font-size: 0.8rem;
                padding: 0.4rem 0.6rem;
            }
        }

        /* ===== ACCESSIBILITY ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Focus styles for keyboard navigation */
        *:focus {
            outline: 2px solid var(--secondary-color);
            outline-offset: 2px;
        }

        /* ===== ANIMATIONS ===== */
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes bounceIn {
            0% {
                opacity: 0;
                transform: scale(0.3);
            }
            50% {
                opacity: 1;
                transform: scale(1.05);
            }
            70% {
                transform: scale(0.9);
            }
            100% {
                opacity: 1;
                transform: scale(1);
            }
        }

        .bounce-in {
            animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        }

        /* ===== ACCESSIBILITY ===== */
        .skip-link {
            position: absolute;
            top: -40px;
            left: 6px;
            background: var(--primary-blue);
            color: white;
            padding: 8px;
            text-decoration: none;
            border-radius: var(--radius-sm);
            z-index: var(--z-tooltip);
            transition: top var(--transition-fast);
        }

        .skip-link:focus {
            top: 6px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        *:focus {
            outline: 2px solid var(--primary-blue);
            outline-offset: 2px;
        }

        /* ===== UTILITY CLASSES ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-4);
        }

        .section {
            padding: var(--space-20) 0;
        }

        .section-title {
            font-size: var(--font-size-4xl);
            font-weight: 800;
            text-align: center;
            margin-bottom: var(--space-4);
            color: var(--text-primary);
        }

        .section-subtitle {
            font-size: var(--font-size-lg);
            color: var(--text-secondary);
            text-align: center;
            max-width: 600px;
            margin: 0 auto var(--space-16);
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: var(--space-2);
            padding: var(--space-3) var(--space-6);
            border: none;
            border-radius: var(--radius-lg);
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-normal);
            font-size: var(--font-size-base);
            line-height: 1;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: white;
        }

        .btn-primary:hover, .btn-primary:focus {
            background: #2563EB;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px var(--shadow-medium);
        }

        .btn-secondary {
            background: var(--mint-green);
            color: white;
        }

        .btn-secondary:hover, .btn-secondary:focus {
            background: #059669;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px var(--shadow-medium);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-color);
        }

        .btn-outline:hover, .btn-outline:focus {
            background: var(--primary-blue);
            color: white;
            border-color: var(--primary-blue);
        }

        /* ===== ANIMATIONS ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInLeft {
            from {
                opacity: 0;
                transform: translateX(-30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes fadeInRight {
            from {
                opacity: 0;
                transform: translateX(30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .animate-on-scroll {
            opacity: 0;
            transition: all 0.6s ease-out;
        }

        .animate-on-scroll.animate {
            opacity: 1;
            animation: fadeInUp 0.6s ease-out forwards;
        }

        .animate-left.animate {
            animation: fadeInLeft 0.6s ease-out forwards;
        }

        .animate-right.animate {
            animation: fadeInRight 0.6s ease-out forwards;
        }

        /* ===== HEADER & NAVIGATION ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: var(--z-fixed);
            transition: all var(--transition-normal);
        }

        [data-theme="dark"] .header {
            background: rgba(17, 24, 39, 0.95);
        }

        .header.scrolled {
            background: var(--background-primary);
            box-shadow: 0 4px 20px var(--shadow-light);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-4) 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            font-size: var(--font-size-2xl);
            font-weight: 700;
            color: var(--primary-blue);
            text-transform: uppercase;
            font-family: 'Poppins', sans-serif;
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
            transition: color var(--transition-normal);
            text-decoration: none;
        }

        .logo i {
            font-size: var(--font-size-2xl);
            color: var(--primary-blue);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            flex-wrap: wrap;
            gap: var(--space-6);
            margin: 0;
        }

        .nav-link {
            color: var(--text-primary);
            text-decoration: none;
            font-weight: 500;
            padding: var(--space-2) var(--space-3);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-link:hover, .nav-link:focus {
            color: var(--primary-blue);
            background: var(--background-accent);
        }

        .nav-link.active {
            color: var(--primary-blue);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary-blue);
            border-radius: var(--radius-full);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--space-4);
        }

        .theme-toggle {
            background: var(--background-accent);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-full);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: var(--font-size-lg);
            box-shadow: 0 2px 4px var(--shadow-light);
            transition: all var(--transition-normal);
            color: var(--text-primary);
        }

        .theme-toggle:hover, .theme-toggle:focus {
            box-shadow: 0 4px 8px var(--shadow-medium);
            background: var(--primary-blue);
            color: white;
            transform: scale(1.1);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: var(--font-size-xl);
            color: var(--text-primary);
            cursor: pointer;
            padding: var(--space-2);
        }

        /* ===== HERO SECTION ===== */
        .hero {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--mint-green) 100%);
            color: white;
            padding: calc(80px + var(--space-24)) 0 var(--space-24);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.1)" points="0,1000 1000,800 1000,1000"/><circle fill="rgba(255,255,255,0.05)" cx="200" cy="200" r="100"/><circle fill="rgba(255,255,255,0.05)" cx="800" cy="300" r="150"/></svg>');
            background-size: cover;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-title {
            font-size: var(--font-size-5xl);
            font-weight: 800;
            margin-bottom: var(--space-6);
            line-height: 1.1;
        }

        .hero-subtitle {
            font-size: var(--font-size-xl);
            margin-bottom: var(--space-8);
            opacity: 0.95;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            gap: var(--space-4);
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--space-8);
            margin-top: var(--space-16);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-size: var(--font-size-3xl);
            font-weight: 800;
            display: block;
            margin-bottom: var(--space-2);
        }

        .stat-label {
            font-size: var(--font-size-sm);
            opacity: 0.9;
        }

        /* ===== ABOUT SECTION ===== */
        .about {
            background: var(--background-secondary);
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-16);
            align-items: center;
        }

        .about-text {
            font-size: var(--font-size-lg);
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .about-text p {
            margin-bottom: var(--space-6);
        }

        .about-image {
            position: relative;
        }

        .about-image img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-xl);
            box-shadow: 0 20px 40px var(--shadow-medium);
        }

        /* ===== VISION MISSION SECTION ===== */
        .vision-mission-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-12);
        }

        .vision-card, .mission-card {
            background: var(--background-primary);
            padding: var(--space-12);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: transform var(--transition-normal);
        }

        .vision-card:hover, .mission-card:hover {
            transform: translateY(-10px);
        }

        .vision-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary-blue);
        }

        .mission-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--mint-green);
        }

        .card-icon {
            font-size: var(--font-size-4xl);
            margin-bottom: var(--space-6);
            display: block;
        }

        .vision-card .card-icon {
            color: var(--primary-blue);
        }

        .mission-card .card-icon {
            color: var(--mint-green);
        }

        .card-title {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            margin-bottom: var(--space-4);
            color: var(--text-primary);
        }

        .card-text {
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== WHY US SECTION ===== */
        .why-us {
            background: var(--background-secondary);
        }

        .why-us-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--space-8);
        }

        .why-item {
            background: var(--background-primary);
            padding: var(--space-8);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            text-align: center;
            transition: transform var(--transition-normal);
        }

        .why-item:hover {
            transform: translateY(-5px);
        }

        .why-emoji {
            font-size: var(--font-size-4xl);
            margin-bottom: var(--space-4);
            display: block;
        }

        .why-text {
            font-size: var(--font-size-lg);
            font-weight: 600;
            color: var(--text-primary);
        }

        /* ===== SERVICES SECTION ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--space-8);
        }

        .service-card {
            background: var(--background-primary);
            padding: var(--space-8);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px var(--shadow-medium);
        }

        .service-icon {
            font-size: var(--font-size-4xl);
            margin-bottom: var(--space-6);
            color: var(--primary-blue);
        }

        .service-title {
            font-size: var(--font-size-xl);
            font-weight: 700;
            margin-bottom: var(--space-4);
            color: var(--text-primary);
        }

        .service-description {
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== GALLERY SECTION ===== */
        .gallery {
            background: var(--background-secondary);
        }
       
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--space-8);
        }
       
        .gallery-item {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            transition: transform var(--transition-normal);
        }

        .gallery-item:hover {
            transform: scale(1.05);
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-xl);
        }

        .gallery-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.3);
            border-radius: var(--radius-xl);
            transition: opacity var(--transition-normal);
        }

        .gallery-item:hover::before {
            opacity: 0.5;
        }

        .gallery-item h3 {
            position: absolute;
            bottom: 10px;
            left: 10px;
            color: white;
            font-size: var(--font-size-lg);
            font-weight: 600;
            z-index: 1;
        }

        .gallery-item a {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            font-size: var(--font-size-lg);
            font-weight: 600;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .gallery-item:hover a {
            opacity: 1;
        }

        
        /* ===== LEARNING SECTION (CHATBOT) ===== */
        .learning {
            background: var(--background-secondary);
        }

        .chatbot-container {
            max-width: 600px;
            margin: 0 auto;
            background: var(--background-primary);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            overflow: hidden;
        }

        .chatbot-header {
            background: var(--primary-blue);
            color: white;
            padding: var(--space-4);
            text-align: center;
            font-weight: 600;
        }

        .chatbot-messages {
            height: 300px;
            overflow-y: auto;
            padding: var(--space-4);
            display: flex;
            flex-direction: column;
            gap: var(--space-3);
        }

        .message {
            max-width: 80%;
            padding: var(--space-3) var(--space-4);
            border-radius: var(--radius-lg);
            line-height: 1.5;
        }

        .message.user {
            align-self: flex-end;
            background: var(--primary-blue);
            color: white;
            border-bottom-right-radius: var(--radius-sm);
        }

        .message.bot {
            align-self: flex-start;
            background: var(--background-accent);
            color: var(--text-primary);
            border-bottom-left-radius: var(--radius-sm);
        }

        .chatbot-input {
            display: flex;
            padding: var(--space-4);
            border-top: 1px solid var(--border-color);
            gap: var(--space-3);
        }

        .chatbot-input input {
            flex: 1;
            padding: var(--space-3);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            font-family: inherit;
            font-size: var(--font-size-base);
        }

        .chatbot-input button {
            padding: var(--space-3) var(--space-4);
            background: var(--primary-blue);
            color: white;
            border: none;
            border-radius: var(--radius-lg);
            cursor: pointer;
            transition: background var(--transition-fast);
        }

        .chatbot-input button:hover {
            background: #2563EB;
        }

        /* ===== TEAM SECTION ===== */
        .team {
            background: var(--background-secondary);
        }

        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--space-8);
        }

        .team-card {
            background: var(--background-primary);
            padding: var(--space-8);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px var(--shadow-medium);
        }

        .team-photo {
            width: 100%;
            max-width: 200px;
            height: 250px;
            margin: 0 auto var(--space-6);
            background: linear-gradient(135deg, var(--primary-blue), var(--mint-green));
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: var(--font-size-4xl);
            color: white;
            position: relative;
            overflow: hidden;
        }

        .team-photo img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .team-name {
            font-size: var(--font-size-xl);
            font-weight: 700;
            margin-bottom: var(--space-2);
            color: var(--text-primary);
        }

        .team-role {
            color: var(--text-secondary);
            font-style: italic;
            margin-bottom: var(--space-4);
        }

        .team-bio {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== ACTIVITIES SECTION ===== */
        .activities-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: var(--space-8);
        }

        .activity-card {
            background: var(--background-primary);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .activity-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px var(--shadow-medium);
        }

        .activity-image {
            height: 200px;
            background: linear-gradient(135deg, var(--primary-blue), var(--mint-green));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: var(--font-size-4xl);
            color: white;
            position: relative;
        }

        .activity-date {
            position: absolute;
            top: var(--space-4);
            right: var(--space-4);
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
            padding: var(--space-2) var(--space-3);
            border-radius: var(--radius-md);
            font-size: var(--font-size-sm);
            font-weight: 600;
        }

        .activity-content {
            padding: var(--space-6);
        }

        .activity-title {
            font-size: var(--font-size-xl);
            font-weight: 700;
            margin-bottom: var(--space-3);
            color: var(--text-primary);
        }

        .activity-description {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: var(--space-4);
        }

        .activity-participants {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            color: var(--text-muted);
            font-size: var(--font-size-sm);
        }

        /* ===== SUPPORT SECTION ===== */
        .support {
            background: var(--background-secondary);
        }

        .support-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-12);
        }

        .donation-card, .volunteer-card {
            background: var(--background-primary);
            padding: var(--space-12);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
        }

        .support-card-title {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            margin-bottom: var(--space-6);
            color: var(--text-primary);
            text-align: center;
        }

        .qr-code {
            position: relative;

            width: 200px;
            height: 200px;
            background: var(--background-accent);
            margin: 0 auto var(--space-6);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: var(--font-size-4xl);
            color: var(--text-muted);
            border: 2px dashed var(--border-color);
        }

        .qr-code img {
            max-width: 100%;
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .donation-button {
            display: inline-block;
            background: var(--primary-blue);
            color: white;
            padding: var(--space-3) var(--space-6);
            border-radius: var(--radius-lg);
            text-decoration: none;
            font-weight: 600;
            transition: background var(--transition-fast);
        }

        .donation-button:hover, .donation-button:focus {
            background: #2563EB;
        }

        .donation-button:active {
            background: #1D4ED8;
            transform: translateY(2px);
        }

        .volunteer-button {
            display: inline-block;
            background: var(--mint-green);
            color: white;
            padding: var(--space-3) var(--space-6);
            border-radius: var(--radius-lg);
            text-decoration: none;
            font-weight: 600;
            transition: background var(--transition-fast);
        }

        .donation-info {
            text-align: center;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .form-group {
            margin-bottom: var(--space-6);
        }

        .form-label {
            display: block;
            margin-bottom: var(--space-2);
            font-weight: 600;
            color: var(--text-primary);
        }

        .form-input, .form-textarea {
            width: 100%;
            padding: var(--space-4);
            border: 2px solid var(--border-color);
            border-radius: var(--radius-lg);
            font-family: inherit;
            font-size: var(--font-size-base);
            background: var(--background-primary);
            color: var(--text-primary);
            transition: all var(--transition-fast);
        }

        .form-input:focus, .form-textarea:focus {
            border-color: var(--primary-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        .form-textarea {
            resize: vertical;
            min-height: 120px;
        }

        .form-error {
            color: #EF4444;
            font-size: var(--font-size-sm);
            margin-top: var(--space-1);
            display: none;
        }

        .form-input.error, .form-textarea.error {
            border-color: #EF4444;
        }

        .form-input.error + .form-error, .form-textarea.error + .form-error {
            display: block;
        }

        /* ===== FAQ SECTION ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--background-primary);
            border-radius: var(--radius-lg);
            margin-bottom: var(--space-4);
            box-shadow: 0 4px 15px var(--shadow-light);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            padding: var(--space-6);
            background: none;
            border: none;
            text-align: left;
            font-size: var(--font-size-lg);
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--background-accent);
        }

        .faq-icon {
            transition: transform var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal);
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
        }

        .faq-answer-content {
            padding: 0 var(--space-6) var(--space-6);
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== TESTIMONIALS SECTION ===== */
        .testimonials {
            background: var(--background-secondary);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: var(--space-8);
        }

        .testimonial {
            background: var(--background-primary);
            padding: var(--space-8);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            position: relative;
            margin: 0;
        }

        .testimonial::before {
            content: '"';
            position: absolute;
            top: var(--space-4);
            left: var(--space-6);
            font-size: var(--font-size-4xl);
            color: var(--primary-blue);
            font-weight: 700;
            line-height: 1;
        }

        .testimonial-text {
            font-style: italic;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--space-6);
            padding-top: var(--space-4);
        }

        .testimonial cite {
            font-style: normal;
            font-weight: 600;
            color: var(--text-primary);
            display: block;
            text-align: right;
        }

        .testimonial cite::before {
            content: '— ';
        }

        /* ===== CONTACT SECTION ===== */
        .contact {
            background: var(--background-secondary);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--space-8);
            margin-bottom: var(--space-16);
        }

        .contact-item {
            background: var(--background-primary);
            padding: var(--space-8);
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 30px var(--shadow-light);
            text-align: center;
            transition: transform var(--transition-normal);
        }

        .contact-item:hover {
            transform: translateY(-5px);
        }

        .contact-icon {
            font-size: var(--font-size-3xl);
            color: var(--primary-blue);
            margin-bottom: var(--space-4);
        }

        .contact-title {
            font-size: var(--font-size-xl);
            font-weight: 700;
            margin-bottom: var(--space-3);
            color: var(--text-primary);
        }

        .contact-info {
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: var(--space-4);
            margin-top: var(--space-12);
        }

        .social-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            background: var(--primary-blue);
            color: white;
            border-radius: var(--radius-full);
            text-decoration: none;
            font-size: var(--font-size-xl);
            transition: all var(--transition-normal);
        }

        .social-link:hover, .social-link:focus {
            background: var(--warm-orange);
            transform: translateY(-5px) scale(1.1);
        }

        /* ===== FOOTER ===== */
        .footer {
            background: var(--text-primary);
            color: var(--background-primary);
            text-align: center;
            padding: var(--space-12) 0;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--space-8);
            margin-bottom: var(--space-8);
        }

        .footer-section h3 {
            font-size: var(--font-size-lg);
            font-weight: 700;
            margin-bottom: var(--space-4);
            color: var(--primary-blue);
        }

        .footer-section p, .footer-section a {
            color: var(--text-secondary);
            text-decoration: none;
            line-height: 1.6;
        }

        .footer-section a:hover {
            color: var(--primary-blue);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: var(--space-6);
            color: var(--text-muted);
        }

        .back-to-top {
            display: inline-flex;
            align-items: center;
            gap: var(--space-2);
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 600;
            margin-bottom: var(--space-4);
            transition: all var(--transition-normal);
        }

        .back-to-top:hover {
            color: var(--warm-orange);
            transform: translateY(-2px);
        }

        /* ===== RESPONSIVE DESIGN ===== */
        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                gap: var(--space-6);
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--background-primary);
                flex-direction: column;
                box-shadow: 0 10px 30px var(--shadow-medium);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }

            .nav-menu.active {
                display: flex;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .hero-title {
                font-size: var(--font-size-4xl);
            }

            .about-content,
            .vision-mission-grid,
            .support-grid
            {
                grid-template-columns: 1fr;
                gap: var(--space-8);

            }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 var(--space-3);
            }

            .section {
                padding: var(--space-16) 0;
            }

            .hero {
                padding: calc(80px + var(--space-16)) 0 var(--space-16);
            }

            .hero-title {
                font-size: var(--font-size-3xl);
            }

            .section-title {
                font-size: var(--font-size-3xl);
            }

            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-6);
            }

            .team-grid,
            .activities-grid {
                grid-template-columns: 1fr;
            }

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

            .social-links {
                flex-wrap: wrap;
            }

            .nav-menu {
                gap: var(--space-4);
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: var(--font-size-2xl);
            }

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

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

            .hero-stats {
                grid-template-columns: 1fr;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .chatbot-messages {
                height: 250px;
            }
        }

        /* ===== LOADING STATES ===== */
        .loading {
            opacity: 0.6;
            pointer-events: none;
        }

        .loading::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 20px;
            height: 20px;
            margin: -10px 0 0 -10px;
            border: 2px solid var(--primary-blue);
            border-radius: 50%;
            border-top-color: transparent;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        /* ===== PRINT STYLES ===== */
        @media print {
            .header, .footer, .theme-toggle, .mobile-menu-toggle, .chatbot-container {
                display: none !important;
            }
            
            .section {
                page-break-inside: avoid;
            }
            
            body {
                font-size: 12pt;
                line-height: 1.4;
            }
        }