* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html, body {
            overflow-x: hidden;
            width: 100%;
        }
        body {
            font-family: 'Inter', sans-serif;
            background: radial-gradient(circle at 10% 20%, #fef9f2, #fdf3e6);
            color: #211c18;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px 24px;
        }
        /* کارت فرم شیشه‌ای طلایی */
        .glass-card {
            background: rgba(255, 252, 247, 0.8);
            backdrop-filter: blur(12px);
            border-radius: 56px;
            border: 1px solid rgba(201, 164, 107, 0.4);
            box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.15);
            width: 100%;
            max-width: 480px;
            padding: 48px 40px 56px;
            transition: all 0.3s ease;
        }
        .form-header {
            text-align: center;
            margin-bottom: 32px;
        }
        .form-header h1 {
            font-family: 'Playfair Display', serif;
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(125deg, #2b241f, #8f633c);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 8px;
        }
        .form-header p {
            color: #6e5a44;
            font-size: 0.95rem;
        }
        .input-group {
            margin-bottom: 24px;
            position: relative;
        }
        .input-group input {
            width: 100%;
            padding: 16px 20px;
            background: rgba(255, 255, 245, 0.9);
            border: 1px solid rgba(201, 164, 107, 0.4);
            border-radius: 48px;
            font-size: 1rem;
            font-family: 'Inter', sans-serif;
            color: #211c18;
            outline: none;
            transition: all 0.2s;
        }
        .input-group input:focus {
            border-color: #c9a46b;
            box-shadow: 0 0 0 3px rgba(201, 164, 107, 0.2);
        }
        .input-group label {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: #8f7357;
            pointer-events: none;
            transition: 0.2s;
            background: transparent;
            padding: 0 5px;
            font-size: 0.95rem;
        }
        .input-group input:focus ~ label,
        .input-group input:not(:placeholder-shown) ~ label {
            top: 0;
            right: 18px;
            font-size: 0.7rem;
            background: #fffcf7;
            padding: 0 6px;
            color: #b57a42;
        }
        input::placeholder {
            color: transparent;
        }
        .btn-submit {
            width: 100%;
            background: linear-gradient(135deg, #1e1a16, #2b241f);
            border: none;
            padding: 14px 20px;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 600;
            color: white;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 8px;
            font-family: 'Inter', sans-serif;
            letter-spacing: 0.5px;
        }
        .btn-submit:hover {
            background: linear-gradient(135deg, #8f633c, #c9a46b);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(201, 164, 107, 0.3);
        }
        .message {
            margin-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            padding: 10px;
            border-radius: 40px;
            background: rgba(201, 164, 107, 0.1);
            color: #4f3e30;
            transition: 0.2s;
            display: none;
        }
        .message.show {
            display: block;
        }
        .message.error {
            background: rgba(185, 55, 55, 0.1);
            color: #b53b3b;
        }
        .message.success {
            background: rgba(65, 135, 85, 0.1);
            color: #2f6b47;
        }
        hr {
            margin: 28px 0 20px;
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, #d4af7a, transparent);
        }
        .demo-note {
            text-align: center;
            font-size: 0.7rem;
            color: #b59a7e;
            margin-top: 20px;
        }
        footer {
            text-align: center;
            font-size: 0.7rem;
            color: #b59a7e;
            margin-top: 24px;
        }
        @media (max-width: 560px) {
            .glass-card {
                padding: 32px 24px 40px;
            }
            .form-header h1 {
                font-size: 2rem;
            }
        }