body {
    font-family: 'Vazir', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #020617 100%); /* slate-900 به slate-950 */
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #e2e8f0; /* متن روشن */
    margin: 0;
}

.login-card {
    background: #1e293b;           /* slate-800 */
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    padding: 2rem 1.8rem;
    margin: 1.5rem;
    max-width: 460px;
    width: 100%;
    text-align: center;
    transition: all 0.35s ease;
    border: 1px solid #334155;     /* slate-700 */
}

.login-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.logo {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 1.8rem;
    color: #60a5fa;                /* blue-400 */
    letter-spacing: -1px;
}

.form-control {
    background: #0f172a;           /* slate-900 */
    border: 1px solid #334155;     /* slate-700 */
    color: #e2e8f0;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    transition: all 0.25s ease;
}

.form-control:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.25);
    outline: none;
}

.form-control::placeholder {
    color: #64748b;                /* slate-500 */
    opacity: 1;
}

input[type="email"]::placeholder,
input[type="password"]::placeholder {
    text-align: right;
}

.btn-info {
    background: #60a5fa;           /* blue-400 */
    border: none;
    color: #0f172a;
    border-radius: 12px;
    font-weight: 700;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: 1rem;
}

.btn-info:hover {
    background: #3b82f6;           /* blue-500 */
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(96, 165, 250, 0.35);
}

.btn-info:active {
    transform: translateY(0);
}

.footer-text {
    margin-top: 1.8rem;
    font-size: 0.92rem;
    color: #94a3b8;                /* slate-400 */
}

.footer-text a {
    color: #60a5fa;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-text a:hover {
    color: #93c5fd;                /* blue-300 */
    text-decoration: underline;
}

/* جهت متن فارسی */
.tlpr {
    direction: ltr;
    text-align: right;
}

.tlpr::placeholder {
    text-align: right;
}

/* برای بهتر دیده شدن در حالت تیره */
small, .text-muted {
    color: #94a3b8 !important;
}