:root {
    --primary-color: #1a2a3a;
    --secondary-color: #0f1923;
    --highlight-color: #4f6d8a;
    --button-hover-color: #5d809e;
    --button-active-color: #3a5065;
    --input-border-color: #4a5568;
    --accent-color: #e6eaef;
}

* {
    box-sizing: border-box;
    text-rendering: optimizeLegibility; /* بهبود نمایش متن */
}

.body {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    direction: rtl;
}

.login-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 24rem;
    min-height: 23rem;
    background: rgba(15, 25, 35, 0.8);
    padding: 2rem;
    border-radius: 0.7rem;
    box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(74, 85, 104, 0.4);
    backdrop-filter: blur(8px);
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    height: 5px;
    background: var(--highlight-color);
    border-radius: 0.7rem 0.7rem 0 0;
}

.login-container__title {
    text-align: center;
    color: var(--accent-color);
    margin: 0 0 1.5rem 0;
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 1px;
}

.login-container__input {
    height: 2.65rem;
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 3rem;
    font-size: 1rem;
    border: none;
    border-bottom: 0.125rem solid var(--input-border-color);
    outline: none;
    background-color: transparent;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.login-container__input:focus {
    border-color: var(--highlight-color);
}

.login-container__input::placeholder {
    color: rgba(230, 234, 239);
    opacity: 0.5;
    text-align: right;
}

/* فقط برای فیلد شماره موبایل: placeholder چپ‌به‌راست و سمت چپ */
#id_phone_number::placeholder {
    text-align: left;
    direction: ltr;
}

.login-container__input:-webkit-autofill {
    box-shadow: 0 0 0 30px transparent inset !important;
    -webkit-text-fill-color: var(--text-color) !important;
    transition: background-color 5000s ease-in-out 0s !important;
}

.login-container__submit {
    height: 3rem;
    width: 100%;
    border: none;
    border-radius: 0.35rem;
    background-color: var(--highlight-color);
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 300ms ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    font-weight: 400;
    position: relative;
    overflow: hidden;
}

.login-container__submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.login-container__submit:hover {
    background-color: var(--button-hover-color);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}

.login-container__submit:hover::before {
    transform: translateX(100%);
}

.login-container__submit:active {
    background-color: var(--button-active-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    transform: scale(0.98);
    border: 1px solid #5d809e;
}

.login-container__action {
    margin-top: 1.25rem;
    display: flex;
    justify-content: space-around;
}

.login-container__action--login,
.login-container__action--register,
.login-container__action--cancel,
.login-container__action--forgot {
    color: var(--highlight-color);
}