:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 0.5rem;
    --transition: 0.2s ease;
}

/* حذف کامل حاشیه و فاصله از html و body */
html, body {
    margin: 0 !important;
    padding: 0 !important;
    height: 100%;
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Vazir', Tahoma, sans-serif;
    direction: rtl;
}

/* 🔹 Container — تنظیم فاصله از بالا */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 0 1rem;
    padding-top: 2rem;
    background: transparent;
}

/* 🔹 Card */
.auth-card {
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    width: 100%;
    max-width: 360px;
    padding: 1.5rem;
    transition: var(--transition);
}

/* 🔹 Header */
.auth-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-title {
    color: var(--dark-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 1.25rem;
}

.auth-subtitle {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* 🔹 Floating Label Group */
.form-group {
    position: relative;
    margin-bottom: 1rem;
}

.form-control {
    width: 100%;
    border: 1px solid #ccc;
    border-radius: var(--border-radius);
    padding: 0.65rem 0.75rem 0.35rem;
    font-size: 0.93rem;
    background: transparent;
    transition: var(--transition);
}

    .form-control:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
        outline: none;
        padding-left: 45px !important;
    }

.form-label {
    position: absolute;
    top: 52%;
    left: 0.75rem;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: #999;
    pointer-events: none;
    transition: var(--transition);
    background: #fff;
    padding: 0 0.25rem;
}

/* 🔹 Floating effect */
.form-control:focus + .form-label,
.form-control:not(:placeholder-shown) + .form-label {
    top: -0.15rem;
    font-size: 0.7rem;
    color: var(--primary-color);
}

/* 🔹 Button */
.btn {
    width: 100%;
    padding: 0.65rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

    .btn-primary:hover {
        background: #0056b3;
    }

/* 🔹 Footer */
.auth-footer {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.9rem;
}

.auth-link {
    color: var(--primary-color);
    text-decoration: none;
}

    .auth-link:hover {
        text-decoration: underline;
    }

/* 🔹 Invalid feedback */
.invalid-feedback {
    color: var(--danger-color);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: none;
}

.form-control:invalid ~ .invalid-feedback {
    display: block;
}

/* 🔹 استایل‌های مربوط به نمایش/مخفی کردن پسورد */
.password-toggle {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: transparent;
    color: #6b7280;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: var(--transition);
    z-index: 5;
}

    .password-toggle:hover {
        background-color: #f1f1f1;
        color: #374151;
    }

    .password-toggle:focus {
        outline: none;
        box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
    }

/* تنظیم padding برای فیلد پسورد */
.form-group input[type="password"],
.form-group input[type="text"] {
    padding-left: 45px !important;
}

/* استایل برای حالت invalid */
.form-control.is-invalid {
    border-color: var(--danger-color);
    padding-left: 45px !important;
}

/* 🔹 Mobile tweaks */
@media (max-width: 480px) {
    .auth-container {
        padding-top: 1.5rem;
    }

    .auth-card {
        padding: 1.25rem;
    }

    .form-control {
        font-size: 0.9rem;
        padding: 0.6rem 0.6rem 0.3rem;
    }

    .auth-title {
        font-size: 1.1rem;
    }
}