/* ================================================= */
        /* 1. Global Styles & Variables */
        /* ================================================= */
        :root {
            --primary-green: #10B981; 
            --secondary-green: #34D399; 
            --dark-green: #047857;
            --white: #FFFFFF;
            --light-bg: #F8FAFC;
            --light-grey: #E2E8F0;
            --dark-bg: #0F172A; 
            --card-dark: #1E293B;
            --text-color: #334155;
            --text-light: #64748B;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --error-red: #EF4444;
            --warning: #F59E0B;
            --success: #10B981;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body { 
            font-family: 'Poppins', sans-serif; 
            background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 50%, #bbf7d0 100%);
          
           /* background-color: var(--light-bg); */
            color: var(--text-color); 
            transition: var(--transition);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ================================================= */
        /* 2. Header Styles */
        /* ================================================= */
        .header {
            background: var(--white);
            box-shadow: var(--shadow);
            padding: 0 20px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 2px solid #10B981;
        }

        .logo {
            display: flex;
            align-items: center;
            font-size: 25px;
            font-weight: 700;
            color: var(--primary-green);
            text-decoration: none;
        }

        .logo-image {
            width: 36px;
            height: 36px;
            margin-right: 12px;
            border-radius: 8px;
            background-color: var(--primary-green);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .menu-toggle {
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text-color);
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: var(--light-grey);
            color: var(--primary-green);
        }

        .theme-toggle {
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text-color);
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .theme-toggle:hover {
            background: var(--light-grey);
            color: var(--primary-green);
        }

        /* ================================================= */
        /* 3. Sidebar Styles */
        /* ================================================= */
        .sidebar {
            width: 280px;
            background: var(--white);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: fixed;
            height: 100vh;
            z-index: 200;
            overflow-y: auto;
            transform: translateX(-100%);
            left: 0;
            top: 0;
        }

        .sidebar.open {
            transform: translateX(0);
        }

        .sidebar-header {
            padding: 24px 20px;
            border-bottom: 1px solid var(--light-grey);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .close-sidebar {
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
        }

        .close-sidebar:hover {
            color: var(--primary-green);
        }

        .sidebar-menu {
            padding: 20px 0;
        }

        .menu-item {
            padding: 12px 20px;
            display: flex;
            align-items: center;
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
        }

        .menu-item:hover {
            background-color: rgba(16, 185, 129, 0.05);
            color: var(--primary-green);
            padding-left: 25px;
        }

        .menu-item i {
            margin-right: 12px;
            font-size: 18px;
            width: 24px;
            text-align: center;
        }

        .menu-dropdown {
            position: relative;
        }

        .dropdown-toggle {
            width: 55%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .dropdown-toggle::after {
            content: '\f107';
            font-family: 'Font Awesome 5 Free';
            font-weight: 900;
            transition: var(--transition);
        }

        .menu-dropdown.active .dropdown-toggle::after {
            transform: rotate(180deg);
        }

        .dropdown-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background: rgba(16, 185, 129, 0.03);
        }

        .menu-dropdown.active .dropdown-menu {
            max-height: 500px;
        }

        .dropdown-item {
            padding: 10px 20px 10px 56px;
            display: flex;
            align-items: center;
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
            font-size: 14px;
        }

        .dropdown-item:hover {
            background-color: rgba(16, 185, 129, 0.05);
            color: var(--primary-green);
        }

        .dropdown-item i {
            font-size: 14px;
            margin-right: 10px;
        }

        .sidebar-auth {
            padding: 20px;
            border-top: 1px solid var(--light-grey);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-btn {
            padding: 12px 16px;
            border-radius: 8px;
            text-decoration: none;
            text-align: center;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .sidebar-btn-primary:hover {
            background: var(--dark-green);
        }

        .sidebar-btn-outline {
            background: transparent;
            border: 1px solid var(--light-grey);
            color: var(--text-color);
        }

        .sidebar-btn-outline:hover {
            background: var(--light-grey);
        }

        /* ================================================= */
        /* 4. Main Content Area */
        /* ================================================= */
        .main-content {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px 20px;
        }

        .signin-container {
            width: 100%;
            max-width: 450px;
        }

        .signin-card {
           /* background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 50%, #bbf7d0 100%);*/
          
            background: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            animation: fadeInUp 0.6s ease-out;
     border-top: 5px solid #10B981;
border-bottom: 5px solid #10B981;        }

        .signin-card:hover {
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }

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

        .signin-header {
            text-align: center;
            margin-bottom: 30px;
        }

        .signin-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-green);
            margin-bottom: 8px;
        }

        .signin-subtitle {
            color: var(--text-light);
            font-size: 16px;
        }

        /* ================================================= */
        /* 5. Form Styles with Icons and Animated Labels */
        /* ================================================= */
        .form-group {
            margin-bottom: 20px;
            position: relative;
        }

        .form-label {
            position: absolute;
            left: 50px;
            top: 16px;
            color: var(--text-light);
            font-size: 15px;
            pointer-events: none;
            transition: var(--transition);
            background: var(--white);
            padding: 0 4px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 14px 16px 14px 50px;
            border: 1px solid var(--light-grey);
            border-radius: 8px;
            font-family: 'Poppins', sans-serif;
            transition: var(--transition);
            font-size: 15px;
            background: var(--white);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-green);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
        }

        .form-control:focus + .form-label,
        .form-control:not(:placeholder-shown) + .form-label {
            top: -8px;
            left: 46px;
            font-size: 13px;
            color: var(--primary-green);
            font-weight: 600;
        }

        .form-icon {
            position: absolute;
            left: 16px;
            top: 16px;
            color: var(--text-light);
            font-size: 18px;
            transition: var(--transition);
        }

        .form-control:focus ~ .form-icon {
            color: var(--primary-green);
        }

        .form-control.error {
            border-color: var(--error-red);
        }

        .form-control.success {
            border-color: var(--success);
        }

        .password-toggle {
            position: absolute;
            right: 16px;
            top: 16px;
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
        }

        .password-toggle:hover {
            color: var(--primary-green);
        }

        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .remember-me {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .remember-me input {
            width: 16px;
            height: 16px;
        }

        .remember-me label {
            font-size: 14px;
            color: var(--text-light);
            cursor: pointer;
        }

        .forgot-password {
            color: var(--primary-green);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

        .forgot-password:hover {
            text-decoration: underline;
        }

        .form-hint {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 6px;
            margin-left: 50px;
        }

        .form-error {
            font-size: 12px;
            color: var(--error-red);
            margin-top: 6px;
            margin-left: 50px;
            display: none;
            animation: shake 0.5s ease-in-out;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        .form-error.show {
            display: block;
        }

        /* ================================================= */
        /* 6. Button Styles */
        /* ================================================= */
        .btn {
            padding: 14px 24px;
            border: none;
            border-radius: 8px;
            font-family: 'Poppins', sans-serif;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
            width: 100%;
        }

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

        .btn-primary:hover {
            background: var(--dark-green);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(16, 185, 129, 0.3);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--light-grey);
            color: var(--text-color);
        }

        .btn-secondary:hover {
            background: var(--light-grey);
        }

        /* ================================================= */
        /* 7. Footer Styles with Icons */
        /* ================================================= */
        .footer {
            background: var(--white);
            padding: 40px 20px 20px;
            border-top: 1px solid var(--light-grey);
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-section h3 {
            font-size: 18px;
            margin-bottom: 16px;
            color: var(--primary-green);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-section h3 i {
            font-size: 20px;
        }

        .footer-section p {
            color: var(--text-light);
            margin-bottom: 16px;
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }

        .footer-links a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: var(--primary-green);
            padding-left: 5px;
        }

        .footer-links i {
            width: 16px;
            text-align: center;
        }

        .contact-info {
            list-style: none;
        }

        .contact-info li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-light);
            font-size: 14px;
        }

        .contact-info i {
            width: 16px;
            color: var(--primary-green);
        }

        .social-links {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .social-link {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--light-grey);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
        }

        .social-link:hover {
            background: var(--primary-green);
            color: white;
            transform: translateY(-3px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            margin-top: 30px;
            border-top: 1px solid var(--light-grey);
            color: var(--text-light);
            font-size: 14px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        .footer-bottom-links a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 13px;
            transition: var(--transition);
        }

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

        /* ================================================= */
        /* 8. Signup Prompt */
        /* ================================================= */
        .signup-prompt {
            text-align: center;
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px solid var(--light-grey);
        }

        .signup-prompt a {
            color: var(--primary-green);
            text-decoration: none;
            font-weight: 500;
        }

        .signup-prompt a:hover {
            text-decoration: underline;
        }

        /* ================================================= */
        /* 9. Dark Mode Styles */
        /* ================================================= */
        .dark-mode {
            background: var(--dark-bg);
            color: #E2E8F0;
        }

        .dark-mode .header,
        .dark-mode .signin-card,
        .dark-mode .footer,
        .dark-mode .sidebar {
            background: var(--card-dark);
            color: #E2E8F0;
        }

        .dark-mode .form-control {
            background: #334155;
            border-color: #475569;
            color: #E2E8F0;
        }

        .dark-mode .form-control:focus {
            border-color: var(--primary-green);
        }

        .dark-mode .form-label {
            background: var(--card-dark);
        }

        .dark-mode .menu-item {
            color: #CBD5E1;
        }

        .dark-mode .menu-item:hover {
            background: rgba(16, 185, 129, 0.1);
            color: var(--secondary-green);
        }

        .dark-mode .btn-secondary {
            border-color: #475569;
            color: #CBD5E1;
        }

        .dark-mode .btn-secondary:hover {
            background: #334155;
        }

        .dark-mode .signup-prompt {
            border-top-color: #334155;
        }

        .dark-mode .footer-section p,
        .dark-mode .footer-links a,
        .dark-mode .contact-info li {
            color: #94A3B8;
        }

        .dark-mode .footer-links a:hover {
            color: var(--secondary-green);
        }

        .dark-mode .social-link {
            background: #334155;
            color: #94A3B8;
        }

        .dark-mode .social-link:hover {
            background: var(--primary-green);
            color: white;
        }

        .dark-mode .remember-me label {
            color: #94A3B8;
        }

        /* ================================================= */
        /* 10. Success Modal */
        /* ================================================= */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .modal.active {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: var(--white);
            border-radius: 12px;
            padding: 30px;
            width: 90%;
            max-width: 400px;
            box-shadow: var(--shadow-lg);
            transform: translateY(-20px) scale(0.9);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .modal.active .modal-content {
            transform: translateY(0) scale(1);
            animation: modalPop 0.5s ease-out;
        }

        @keyframes modalPop {
            0% {
                transform: translateY(-20px) scale(0.9);
                opacity: 0;
            }
            70% {
                transform: translateY(10px) scale(1.02);
            }
            100% {
                transform: translateY(0) scale(1);
                opacity: 1;
            }
        }

        .modal-icon {
            font-size: 60px;
            color: var(--success);
            margin-bottom: 20px;
            animation: bounce 1s ease-in-out;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-10px);
            }
            60% {
                transform: translateY(-5px);
            }
        }

        .modal-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-green);
            margin-bottom: 10px;
        }

        .modal-message {
            color: var(--text-light);
            margin-bottom: 25px;
        }

        .modal-actions {
            display: flex;
            gap: 12px;
        }

        .modal-actions .btn {
            flex: 1;
        }

         /* 10. Success/Error Modal (An kara gyaran Error Modal) */
        /* ================================================= */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .modal.active {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: var(--white);
            border-radius: 12px;
            padding: 30px;
            width: 90%;
            max-width: 400px;
            box-shadow: var(--shadow-lg);
            transform: translateY(-20px) scale(0.9);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .modal.active .modal-content {
            transform: translateY(0) scale(1);
            animation: modalPop 0.5s ease-out;
        }

        @keyframes modalPop {
            0% {
                transform: translateY(-20px) scale(0.9);
                opacity: 0;
            }
            70% {
                transform: translateY(10px) scale(1.02);
            }
            100% {
                transform: translateY(0) scale(1);
                opacity: 1;
            }
        }

        .modal-icon {
            font-size: 60px;
            margin-bottom: 20px;
            animation: bounce 1s ease-in-out;
        }

        .modal-success .modal-icon {
            color: var(--success);
        }

        .modal-error .modal-icon {
            color: var(--error-red); /* Launi na Error */
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-10px);
            }
            60% {
                transform: translateY(-5px);
            }
        }

        .modal-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .modal-success .modal-title {
            color: var(--primary-green);
        }

        .modal-error .modal-title {
            color: var(--error-red); /* Launi na Error */
        }

        .modal-message {
            color: var(--text-light);
            margin-bottom: 25px;
        }

        .modal-actions {
            display: flex;
            gap: 12px;
        }

        .modal-actions .btn {
            flex: 1;
        }
        
        /* Sabon Salo na Red Button na Error Modal */
        .btn-error {
            background: var(--error-red);
            color: var(--white);
        }
        
        .btn-error:hover {
            background: #CC0000;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(239, 68, 68, 0.3);
        }
        
        
        /* 11. Responsive Styles */
        @media (max-width: 640px) {
            .signin-card {
                padding: 24px;
            }
            
            /* ... Sauran Media Queries ... */
        }

        /* Dark Mode adjustments for modal */
        .dark-mode .modal-content {
            background: var(--card-dark);
        }

        /* ================================================= */
        /* 11. Responsive Styles */
        /* ================================================= */
        @media (max-width: 640px) {
            .signin-card {
                padding: 24px;
            }
            
            .header {
                padding: 0 16px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .modal-actions {
                flex-direction: column;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .footer-bottom-links {
                justify-content: center;
            }
            
            .form-options {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        @media (max-width: 480px) {
            .signin-title {
                font-size: 24px;
            }
            
            .main-content {
                padding: 20px 16px;
            }
            
            .form-label {
                font-size: 14px;
            }
            
            .form-control:focus + .form-label,
            .form-control:not(:placeholder-shown) + .form-label {
                font-size: 12px;
            }
        }

        /* ================================================= */
        /* 12. Mobile Overlay */
        /* ================================================= */
        .mobile-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 150;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .mobile-overlay.active {
            opacity: 1;
            visibility: visible;
        }