@font-face {
            font-family: 'CustomFont';
            src: url('../font/my.ttf') format('truetype');
            font-weight: normal;
            font-style: normal;
        }

        @font-face {
            font-family: 'CustomFontBold';
            src: url('../font/my.ttf') format('truetype');
            font-weight: bold;
            font-style: normal;
        }

        @import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap');

        :root {
            --accent-color: var(--color1);
            --second-color: var(--color2);
            --error-color: #ff6b6b;
            --success-color: #51cf66;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            user-select: none;
        }

        html, body {
            font-family: 'CustomFont', "Montserrat", sans-serif;
            color: white;
            overflow-x: hidden;
            height: 100vh;
        }

        .main-container {
            position: relative;
            width: 100%;
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }

.video-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    background: 
        linear-gradient(135deg, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.6) 100%),
        url('../images/back.png') center/cover no-repeat;
    animation: backgroundMove 30s ease-in-out infinite;
}



        .video-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: -1;
        }

        .auth-container {
            max-width: 490px;
            width: 90%;
            animation: slideUp 0.8s ease-out;
            position: relative;
        }

        .back-button {
            position: absolute;
            top: 30px;
            left: 30px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 12px 20px;
            color: white;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 1000;
        }

        .back-button:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .auth-container::before {
            display: none;
        }

        .logo {
            text-align: center;
            font-size: 2.2rem;
            font-weight: 700;
            font-family: 'CustomFontBold', "Montserrat", sans-serif;
            background: linear-gradient(45deg, var(--accent-color), var(--second-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 25px;
        }

        .auth-subtitle {
            text-align: center;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 50px;
            font-size: 0.95rem;
        }

        .auth-tabs {
            display: none;
        }

        .register-form {
            display: none;
        }

        .form-group {
            margin-bottom: 20px;
            position: relative;
        }

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 1500;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.9rem;
        }

        .form-input {
            width: 100%;
            padding: 18px 25px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            color: white;
            font-size: 1rem;
            font-family: 'CustomFont', "Montserrat", sans-serif;
            transition: all 0.3s ease;
            backdrop-filter: blur(20px);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--accent-color);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(161, 140, 255, 0.1);
        }

        .form-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .password-toggle {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.3s ease;
        }

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

        .form-options {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
            margin-bottom: 30px;
        }

        .forgot-password {
            color: var(--accent-color);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s ease;
        }

        .forgot-password:hover {
            color: var(--second-color);
        }

        .auth-button {
            width: 100%;
            padding: 15px;
            background: linear-gradient(45deg, var(--accent-color), var(--second-color));
            border: none;
            border-radius: 12px;
            color: white;
            font-size: 1rem;
            font-weight: 600;
            font-family: 'CustomFontBold', "Montserrat", sans-serif;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            overflow: hidden;
        }

        .auth-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(161, 140, 255, 0.3);
        }

        .auth-button:active {
            transform: translateY(0);
        }

        .auth-button.loading {
            pointer-events: none;
        }

        .auth-button.loading::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 20px;
            height: 20px;
            margin: -10px 0 0 -10px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-top: 2px solid white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .social-divider {
            text-align: center;
            margin: 30px 0;
            position: relative;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
        }

        .social-divider::before,
        .social-divider::after {
            content: '';
            position: absolute;
            top: 50%;
            width: 40%;
            height: 1px;
            background: rgba(255, 255, 255, 0.2);
        }

        .social-divider::before {
            left: 0;
        }

        .social-divider::after {
            right: 0;
        }

        .social-buttons {
            display: flex;
            gap: 15px;
        }

        .social-button {
            flex: 1;
            padding: 15px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            color: white;
            text-decoration: none;
            text-align: center;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }

        .social-button:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        .error-message,
        .success-message {
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            text-align: center;
            opacity: 0;
            transform: translateY(-10px);
            transition: all 0.3s ease;
        }

        .error-message {
            background: rgba(255, 107, 107, 0.1);
            border: 1px solid rgba(255, 107, 107, 0.3);
            color: var(--error-color);
        }

        .success-message {
            background: rgba(81, 207, 102, 0.1);
            border: 1px solid rgba(81, 207, 102, 0.3);
            color: var(--success-color);
        }

        .error-message.show,
        .success-message.show {
            opacity: 1;
            transform: translateY(0);
        }

        .register-form {
            display: none;
        }

        .register-form.active {
            display: block;
        }

        @media (max-width: 768px) {
            .auth-container {
                padding: 30px 25px;
                margin: 20px;
                max-width: none;
            }

            .back-button {
                top: 20px;
                left: 20px;
                padding: 10px 15px;
            }

            .logo {
                font-size: 1.8rem;
            }
        }

        .video-background video::-webkit-media-controls {
            display: none !important;
        }
        
        .video-background video::-webkit-media-controls-panel {
            display: none !important;
        }