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

        /* Note: Theme variables are now in themes.css */
        /* These are fallback values for backwards compatibility */
        :root {
            --primary: var(--accent-primary, #6366f1);
            --primary-dark: var(--accent-primary-hover, #4f46e5);
            --secondary: var(--success-color, #10b981);
            --dark-bg: var(--bg-body, #0f172a);
            --dark-card: var(--bg-secondary, #1e293b);
            --dark-border: var(--border-color, #334155);
            --text-primary: var(--text-primary, #f8fafc);
            --text-secondary: var(--text-secondary, #cbd5e1);
            --accent: var(--warning-color, #f59e0b);
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
            --shadow: var(--shadow-md, 0 10px 15px -3px rgba(0, 0, 0, 0.3));
            --shadow-glow: var(--shadow-accent, 0 0 20px rgba(99, 102, 241, 0.5));
        }

        body {
            font-family: 'Poppins', sans-serif;
            background-color: var(--bg-body, var(--dark-bg));
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        
        header {
            padding: 24px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            background-color: var(--bg-secondary, rgba(15, 23, 42, 0.9));
            
            border-bottom: 1px solid var(--border-color, rgba(51, 65, 85, 0.3));
            transition: var(--transition);
        }

        header.scrolled {
            padding: 16px 0;
            box-shadow: var(--shadow);
        }

        .nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
        }

        .logo-icon {
            color: var(--accent-primary, #6366f1);
            font-size: 2.2rem;
        }

        .logo span {
            color: var(--accent-primary, #6366f1);
        }

        .menu {
            display: flex;
            gap: 32px;
            list-style: none;
            margin-bottom: 0;
            left:20;
        }

        .menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

        .menu a:hover {
            color: var(--text-primary);
        }

        .menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }

        .menu a:hover::after {
            width: 100%;
        }

        .header-btns {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn-login {
            color: var(--text-primary);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            padding: 8px 20px;
            border-radius: 6px;
            border: 1px solid var(--dark-border);
        }

        .btn-login:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-primary {
            background-color: var(--primary);
            color: white;
            padding: 16px 16px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

.btn-main {
    background-color: var(--primary);
    color: white;
    padding: 16px 16px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    animation: pulse-shadow 2s infinite;
}

.btn-main:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

        .btn-secondary {
            background-color: transparent;
            color: var(--text-primary);
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            border: 2px solid var(--dark-border);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-menu {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            margin-left: 15px;
            transition: var(--transition);
            transform: scale(1);
        }

        

        .btn-menu.active {
            transform: scale(1.3);
        }

        .nav-menu-wrapper {
            display: flex;
            align-items: center;
            flex: 1;
            justify-content: space-between;
            position: relative;
        }

        .nav-menu-wrapper .menu {
            display: flex;
            gap: 32px;
            list-style: none;
            margin-bottom: 0;
            position: absolute;
            left: 37%;
            transform: translateX(-50%);
        }

        .buttons-header {
            display: flex;
            gap: 15px;
            align-items: center;
            margin-left: auto;
        }

        .nav-menu-wrapper .buttons-header .btn-main, 
        .nav-menu-wrapper .buttons-header .btn-secondary {
            margin-left: 0;
        }

       

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

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

        /* Hero Section */
        .welcome-section {
            padding: 180px 0 120px;
            position: relative;
            overflow: hidden;
        }

        .welcome-content {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        .welcome-intro {
            flex: 1;
        }

        .welcome-title {
            font-size: 3.5rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 24px;
            background: var(--bg-secondary, #1e293b);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .welcome-description {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .welcome-buttons {
            display: flex;
            gap: 20px;
            margin-top: 40px;
        }

        .welcome-preview {
            flex: 1;
            position: relative;
        }

        .schedule-preview {
            background-color: var(--card-bg, var(--dark-card));
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow-md, var(--shadow));
            border: 1px solid var(--border-color, var(--dark-border));
            position: relative;
            overflow: hidden;
        }

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

        .schedule-name {
            font-weight: 600;
            color: var(--text-primary);
        }

        .week-schedule {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 8px;
            margin-bottom: 20px;
        }

        .day-header {
            background-color: rgba(var(--accent-primary-rgb, 99, 102, 241), 0.1);
            color: var(--accent-primary, var(--primary));
            font-weight: 600;
            padding: 8px;
            text-align: center;
            border-radius: 6px;
            font-size: 0.9rem;
        }

        .time-slot {
            background-color: rgba(30, 41, 59, 0.5);
            height: 40px;
            border-radius: 6px;
            transition: var(--transition);
        }

        .time-slot:hover {
            background-color: var(--accent-primary, var(--primary));
            transform: scale(1.05);
        }

        .schedule-footer {
            display: flex;
            justify-content: center;
            padding-top: 16px;
            border-top: 1px solid var(--border-color, var(--dark-border));
        }

        
        .features {
            padding: 100px 0;
        }

        .section-heading {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            opacity: 0;
            transform: translateY(30px);
        }

        .section-text {
            text-align: center;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 60px;
            opacity: 0;
            transform: translateY(30px);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

.feature {
    background-color: var(--card-bg, var(--dark-card));
    border-radius: 12px;
    padding: 32px;
    border: 1px solid var(--border-color, var(--dark-border));
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
}


.feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-secondary, #1e293b);
    transform: translateX(-100%);
}

.feature:hover::before {
    animation: shine 1.5s;
    
}

@keyframes shine {
    100% {
        transform: translateX(100%);
    }
}


@keyframes glow-border {
    
    0% {
        border-color: var(--dark-border);
        box-shadow: none;
    }
    100% {
        border-color: var(--primary);
        box-shadow: var(--shadow-glow);
    }
}

        .feature:hover {
           animation: glow-border 0.3s forwards;
        }

        

        .feature-icon {
            width: 60px;
            height: 60px;
            background: rgba(var(--accent-primary-rgb, 99, 102, 241), 0.25);
            border: 1px solid var(--accent-primary, rgba(139, 92, 246, 0.5));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-size: 1.8rem;
            color: var(--text-primary, white);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
        }

        .feature-title {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .feature-desc {
            color: var(--text-secondary);
        }

        
 

        .start-heading {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .start-text {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 40px;
            font-size: 1.1rem;
        }

        
        footer {
            background-color: var(--card-bg, var(--dark-card));
            padding: 60px 0 30px;
            border-top: 1px solid var(--border-color, var(--dark-border));
            scroll-behavior: smooth;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 80px;
            margin-bottom: 40px;
        }

        .footer-col {
            display: flex;
            flex-direction: column;
            padding: 20px;
            text-align: center;
            padding-top: 10px;
        }

        .footer-col h3 {
            font-size: 1.5rem;
            margin-bottom: 28px;
            color: var(--text-primary);
            
        }

        .footer-links {
            list-style: none;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 14px;
        }

        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
        }

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

        #footer-contact {
            display: flex;
            flex-direction: column;
            padding: 20px;
            border-radius: 12px;
            border: 2px solid transparent;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            text-align: center;
        }
        
        #footer-contact h3 {
            font-size: 1.5rem;
            margin-bottom: 28px;
            color: var(--text-primary);
        }

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

        #footer-contact .footer-links li {
            margin-bottom: 14px;
        }

        #contact:target #footer-contact {
            position: relative;
            border: 2px solid rgba(var(--accent-primary-rgb, 99, 102, 241), 0.6);
            border-radius: 12px;
            padding: 20px;
            box-shadow: var(--shadow-glow);
            animation: glow 1.5s ease-out forwards;
        }

        @keyframes glow {
            0% {
                border-color: rgba(var(--accent-primary-rgb, 99, 102, 241), 0.6);
                box-shadow: 0 0 20px rgba(var(--accent-primary-rgb, 99, 102, 241), 0.3);
            }
            50% {
                border-color: rgba(var(--accent-primary-rgb, 99, 102, 241), 0.6);
                box-shadow: 0 0 30px rgba(var(--accent-primary-rgb, 99, 102, 241), 0.4);
            }
            100% {
                border-color: rgba(var(--accent-primary-rgb, 99, 102, 241), 0.6);
                box-shadow: var(--shadow-glow);
            }
        }

        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-icons a {
            color: var(--text-secondary);
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .social-icons a:hover {
            color: var(--accent-primary, var(--primary));
            transform: translateY(-2px);
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color, var(--dark-border));
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        
        .fade {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .fade.show {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1100px) {
            .nav {
                position: relative;
                height: 60px;
            }

            .logo {
                position: absolute;
                left: 45%;
                transform: translateX(-50%);
                margin: 0;
            }

            .btn-menu {
                display: block;
                position: absolute;
                left: 60%;
                transform: translateX(-50%) scale(1);
            }

            .btn-menu.active {
                transform: translateX(-50%) scale(1.3);
            }

            .nav-menu-wrapper {
                display: none;
                position: fixed;
                top: 80px;
                left: 25%;
                right: auto;
                transform: translateX(-50%);
                width: 50%;
                max-width: 600px;
                background-color: var(--card-bg, var(--dark-card));
                border: 1px solid var(--border-color, var(--dark-border));
                border-radius: 12px;
                box-shadow: var(--shadow-md, var(--shadow));
                z-index: 1000;
                flex-direction: column;
                overflow: hidden;
                margin: 0;

            }

            .nav-menu-wrapper .menu {
                flex-direction: column;
                gap: 0;
                width: 100%;
                padding: 20px;
                position: relative;
                left: 0;
                transform: none;
            }

            .buttons-header {
                display: flex;
                flex-direction: column;
                gap: 8px;
                padding: 15px 20px;
                border-top: 1px solid var(--dark-border);
                align-items: center;
                margin-left: 0;
            }

            .nav-menu-wrapper.active {
                display: flex;
                animation: slideDown 0.3s ease-out forwards;
            }

            .nav-menu-wrapper.closing {
                animation: slideUp 0.3s ease-out forwards;
            }

            .nav-menu-wrapper .menu {
                flex-direction: column;
                gap: 0;
                width: 100%;
                padding: 20px;
            }

            .nav-menu-wrapper .menu li {
                padding: 12px 0;
                border-bottom: 1px solid var(--dark-border);
                display: flex;
                justify-content: center;
            }

            .nav-menu-wrapper .menu li:last-child {
                border-bottom: none;
            }

            .nav-menu-wrapper .menu li a {
                display: block;
                width: 100%;
                padding: 8px 0;
                text-align: center;
            }

            .nav-menu-wrapper .menu li a::after {
                display: none;
            }

            .nav-menu-wrapper .menu li a:hover::after {
                display: none;
            }

            .nav-menu-wrapper .buttons-header .btn-secondary,
            .nav-menu-wrapper .buttons-header .btn-main {
                
                width: auto;
                padding: 8px 16px !important;
                font-size: 0.95rem !important;
                text-align: center;
                white-space: nowrap;
                display: inline-block;
                margin-bottom:10px;
                margin-left:0;
            }
        }

        @media (max-width: 992px) {
            .welcome-content {
                flex-direction: column;
                text-align: center;
            }
            
            .menu {
                display: none;
            }
            
            .welcome-buttons {
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .welcome-title {
                font-size: 2.2rem;
            }
            
            .section-heading {
                font-size: 2rem;
            }
            
            .welcome-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Modal Styles */
        .modal-content {
            background-color: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: 12px;
        }

        .modal-header {
            background-color: var(--dark-card);
            border-color: var(--dark-border);
        }

        .modal-header .btn-close {
            filter: brightness(1.5);
        }

        .modal-body {
            background-color: var(--dark-card);
        }

        .modal-footer {
            background-color: var(--dark-card);
            border-color: var(--dark-border);
        }

        .modal-title {
            color: var(--text-primary);
            font-weight: 600;
        }

        .modal .form-label {
            color: var(--text-primary);
            font-weight: 500;
        }

        .modal .form-control {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--dark-border);
            color: var(--text-primary);
        }

        .modal .form-control:focus {
            background-color: rgba(255, 255, 255, 0.08);
            border-color: var(--accent-primary, var(--primary));
            color: var(--text-primary);
            box-shadow: 0 0 0 2px rgba(var(--accent-primary-rgb, 99, 102, 241), 0.5);
        }

        /* removed .modal .form-check-label styles */

        .modal .btn-primary {
            background-color: var(--primary);
            border-color: var(--primary);
        }

        .modal .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .modal-footer small a {
            color: var(--primary);
            text-decoration: none;
        }

        .modal-footer small a:hover {
            text-decoration: underline;
        }

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes pulse-shadow {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--accent-primary-rgb, 99, 102, 241), 0.7);
    }
    50% {
        box-shadow: 0 0 0 12px rgba(var(--accent-primary-rgb, 99, 102, 241), 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(var(--accent-primary-rgb, 99, 102, 241), 0);
    }
}

.pulse {
    animation: pulse-animation 2s infinite;
}