/* تنظیمات کلی */
* {
    box-sizing: border-box;
    font-family: 'Tahoma', sans-serif;
    transition: all 0.3s ease;
}

body {
    background: linear-gradient(135deg, #f0f4f8, #d9e2ec);
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    direction: rtl;
    color: #333;
}

/* کانتینر اصلی */
.container {
    background-color: white;
    padding: 40px 60px;
    border-radius: 15px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.12);
    text-align: center;
    width: 350px;
}

/* عنوان */
.title {
    font-size: 1.8rem;
    margin-bottom: 35px;
    font-weight: 700;
    color: #0b3954;
    letter-spacing: 1.2px;
}

/* دکمه‌ها */
.buttons {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* استایل دکمه‌ها */
.btn {
    padding: 14px 0;
    font-size: 1.1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
    font-weight: 600;
    user-select: none;
    outline-offset: 3px;
}

.btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 8px 15px rgba(0,0,0,0.15);
}

/* دکمه ورود معلم */
.btn-teacher {
    background: #0b3954;
    color: white;
    border: 2px solid #0b3954;
}

.btn-teacher:hover {
    background: white;
    color: #0b3954;
    border-color: #0b3954;
}

/* دکمه ورود دانش آموز */
.btn-student {
    background: #f28a30;
    color: white;
    border: 2px solid #f28a30;
}

.btn-student:hover {
    background: white;
    color: #f28a30;
    border-color: #f28a30;
}