:root {
            --color-dark-blue: #2d4a66;
            --color-teal: #49b5c3;
            --bg-light: #f4f7f6;
        }

        body {
            font-family: 'Vazirmatn', sans-serif;
            background-color: var(--bg-light);
            color: #333;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* --- Header --- */
        .auth-header {
            text-align: center;
            padding: 40px 0 20px;
        }
        .auth-logo {
            max-width: 150px;
            margin-bottom: 20px;
        }
        .auth-title {
            color: var(--color-dark-blue);
            font-weight: 800;
            font-size: 1.6rem;
            margin-bottom: 20px;
        }

        /* --- Auth Box --- */
        .auth-container {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding-bottom: 60px;
            padding-left: 15px;
            padding-right: 15px;
        }
        .auth-wrapper {
            background: #fff;
            padding: 40px;
            width: 100%;
            max-width: 550px; /* کمی عریض‌تر برای فرم ثبت‌نام */
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border-radius: 12px;
        }

        /* Form Area */
        .form-label {
            font-weight: 600;
            font-size: 0.95rem;
            color: #444;
            margin-bottom: 8px;
        }
        .form-control {
            border-radius: 8px;
            padding: 12px 15px;
            border: 1px solid #ddd;
            background-color: #fcfcfc;
        }
        .form-control:focus {
            box-shadow: 0 0 0 0.25rem rgba(73, 181, 195, 0.25);
            border-color: var(--color-teal);
            background-color: #fff;
        }
        .password-field { position: relative; }
        .toggle-password {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #aaa;
            font-size: 1.1rem;
        }
        
        .btn-submit {
            background-color: var(--color-teal);
            color: white;
            font-weight: 700;
            padding: 12px;
            border-radius: 8px;
            font-size: 1.1rem;
            transition: all 0.3s;
            margin-top: 15px;
        }
        .btn-submit:hover { 
            background-color: #3aa1ae; 
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(73, 181, 195, 0.3);
        }

        .form-check-label {
            font-size: 0.9rem;
            color: #666;
        }
        .form-check-label a {
            color: var(--color-teal);
            text-decoration: none;
            font-weight: bold;
        }
        .form-check-label a:hover {
            text-decoration: underline;
        }

        .login-link {
            text-align: center;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            color: #666;
            font-size: 0.95rem;
        }
        .login-link a {
            color: var(--color-dark-blue);
            font-weight: 800;
            text-decoration: none;
            margin-right: 5px;
        }
        .login-link a:hover {
            text-decoration: underline;
        }

        /* --- Footer --- */
        .site-footer {
            background-color: var(--color-dark-blue);
            color: #d1d9e0;
            padding: 60px 0 20px;
            margin-top: auto;
        }
        .footer-title {
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            right: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background-color: var(--color-teal);
            border-radius: 2px;
        }
        .footer-text {
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a {
            color: #d1d9e0;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }
        .footer-links a:hover {
            color: var(--color-teal);
            transform: translateX(-5px);
        }
        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.05);
            color: #fff;
            border-radius: 50%;
            transition: all 0.3s;
            text-decoration: none;
        }
        .social-icons a:hover {
            background-color: var(--color-teal);
            transform: translateY(-3px);
        }
        .newsletter-form .form-control {
            border-radius: 8px 0 0 8px;
            border: none;
        }
        .newsletter-form .btn {
            border-radius: 0 8px 8px 0;
            background-color: var(--color-teal);
            color: white;
            font-weight: bold;
        }
        .footer-bottom {
            margin-top: 50px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 0.9rem;
        }